CN101605916B - Method for manufacturing aluminum alloy thick plate, and aluminum alloy thick plate - Google Patents
Method for manufacturing aluminum alloy thick plate, and aluminum alloy thick plate Download PDFInfo
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- CN101605916B CN101605916B CN2008800046652A CN200880004665A CN101605916B CN 101605916 B CN101605916 B CN 101605916B CN 2008800046652 A CN2008800046652 A CN 2008800046652A CN 200880004665 A CN200880004665 A CN 200880004665A CN 101605916 B CN101605916 B CN 101605916B
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- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
Disclosed is a method for producing an aluminum alloy thick plate, which is characterized by sequentially performing, in the following order, a melting step (S1) wherein an aluminum alloy consisting of a predetermined amount of Mg, at least one of Si, Fe, Cu, Mn, Cr, Zn, Ti and Zr, and the balance of Al and unavoidable impurities; a hydrogen gas removing step (S2) wherein a hydrogen gas is removed from the melted aluminum alloy; a filtering step (S3) wherein inclusions are removed from the aluminum alloy from which a hydrogen gas is removed; a casting step (S4) wherein an ingot is produced bycasting the aluminum alloy from which inclusions are removed; a slicing step (S5) wherein an aluminum alloy thick plate having a predetermined thickness is produced by slicing the ingot; and a heat treatment step (S6) wherein the aluminum alloy thick plate having a predetermined thickness is heat-treated by being maintained at a temperature not less than 400 DEG C but less than the melting point for 1 or more hours.
Description
Technical field
The present invention relates to the manufacture method and the aluminium alloy thick plate of aluminium alloy thick plate.
Background technology
Generally, aluminium alloy material such as aluminium alloy thick plate is used in various uses.For example, bed-plate (baseplate), carrying device, vacuum unit are with the semi-conductor connection device of chamber etc.; Motor electronic parts and manufacturing installation thereof; Daily necessities; Mechanical part etc.
Such aluminium alloy material is generally made as follows.That is, will make ingot casting as the fusion of the aluminium alloy of raw material, casting, the thermal treatment that homogenizes as required, rolling thereafter this ingot casting reaches the specific thickness paragraph 0037～0045 of patent documentation 1 (for example, with reference to).
In addition, as the former material of metal die that is used to push with metal die, the material below using.That is, produce with using iron and steel, cast steel etc.,, then use Zinc alloy casting material, aluminum alloy casting material etc. as trial-production usefulness as volume production.The few quantized tendency of many kinds is arranged in addition in recent years, so produced in small quantities usefulness in the conduct, the rolled stock of aluminium alloy, forging material etc. extends material and popularizes.
Patent documentation 1: the spy opens the 2005-344173 communique
Yet, have problem shown below by the manufacture method of the aforesaid rolling aluminium alloy material that carries out.
(1) in the method that after casting, is rolled, because only be rolled the control of the condition of surface and the Flatness (the particularly Flatness of lengthwise direction) of plate by roll, in addition because hot rolling causes the milled sheet surface to form thick oxide scale film, so the control difficulty of condition of surface and Flatness.
(2), have difficulties so realize the raising of thickness of slab precision because be difficult to control thickness of slab with roll.In addition, become big in the size of the central part intermetallic compound of thickness of slab direction, therefore carrying out aluminum anodeization (alumite) when handling, the cross section of thickness of slab direction and surface take place uneven easily.During this external rolling ingot casting, because the increase of rolling number of times causes flow chart to increase, so cost increases.
Summary of the invention
The present invention does in view of aforementioned problems, its purpose is, a kind of excellent productivity that has is provided, easily control surface state and Flatness, can improve the manufacture method of the aluminium alloy thick plate of thickness of slab precision, and the aluminium alloy thick plate that a kind of condition of surface, Flatness and thickness of slab precision excellence are provided.
The application's first invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 12.0 quality % of Mg:1.5 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.6 quality % is following, Mn:1.0 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Described ingot casting section (slice) is made the slicing process of the aluminium alloy thick plate of specific thickness; The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than fusing point more than 400 ℃.
The application's second invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Mn:0.3 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.5 quality % is following, Mg:1.5 quality % is following, Cr:0.3 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness; More than 400 ℃, be lower than aluminium alloy thick plate that the temperature of fusing point keeps specific thickness more than 1 hour, the heat treatment step of heat-treating thus.
The application's the 3rd invention is, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Si:0.2 quality %, below the above 1.5 quality % of Mg:0.3 quality %, and contain below the Fe:0.8 quality %, below the Cu:1.0 quality %, below the Mn:0.6 quality %, below the Cr:0.5 quality %, below the Zn:0.4 quality %, below the Ti:0.1 quality %, among Zr:0.3 quality % is following at least a kind, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness; More than 400 ℃, be lower than aluminium alloy thick plate that the temperature of fusing point keeps specific thickness more than 1 hour, the heat treatment step of heat-treating thus.
The application's the 4th invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 4.0 quality % of Mg:0.4 quality %, below the above 9.0 quality % of Zn:3.0 quality %, and contain below the Si:0.7 quality %, below the Fe:0.8 quality %, below the Cu:3.0 quality %, below the Mn:0.8 quality %, below the Cr:0.5 quality %, below the Ti:0.1 quality %, among Zr:0.25 quality % is following at least a kind, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness; More than 350 ℃, be lower than aluminium alloy thick plate that the temperature of fusing point keeps specific thickness more than 1 hour, the heat treatment step of heat-treating thus.
From described first to fourth invention, preferably adopt following formation.
(A) preferably after described heat treatment step, carry out the surface of aluminium alloy thick plate is implemented the surface smoothing treatment process of surface smoothing processing.Also have, in this constitutes, among cutting system, filing and polishing, select the method more than a kind to carry out described surface smoothing processing.
(B) in described slicing process, remove the thickness direction middle body from described ingot casting, this thickness direction middle body has impartial thickness from thickness direction central authorities towards each surface of thickness direction, and the thickness of establishing described ingot casting is when being T, and it has the thickness of total T/30～T/5.
The application's the 5th invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 12.0 quality % of Mg:1.5 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.6 quality % is following, Mn:1.0 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; More than 200 ℃, the temperature that is lower than 400 ℃ keeps described ingot casting more than 1 hour, the heat treatment step of heat-treating thus; To make the slicing process of the aluminium alloy thick plate of specific thickness through heat treated ingot casting section.
The application's the 6th invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Mn:0.3 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.5 quality % is following, Mg:1.5 quality % is following, Cr:0.3 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Keep described ingot casting more than 1 hour in the temperature that is lower than 400 ℃ more than 200 ℃, the heat treatment step of heat-treating thus; To make the slicing process of the aluminium alloy thick plate of specific thickness through heat treated ingot casting section.
The application's the 7th invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Si:0.2 quality %, below the above 1.5 quality % of Mg:0.3 quality %, and contain below the Fe:0.8 quality %, below the Cu:1.0 quality %, below the Mn:0.6 quality %, below the Cr:0.5 quality %, below the Zn:0.4 quality %, below the Ti:0.1 quality %, among Zr:0.3 quality % is following at least a kind, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Keep described ingot casting more than 1 hour in the temperature that is lower than 400 ℃ more than 200 ℃, the heat treatment step of heat-treating thus; To make the slicing process of the aluminium alloy thick plate of specific thickness through heat treated ingot casting section.
The application's the 8th invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 4.0 quality % of Mg:0.4 quality %, below the above 9.0 quality % of Zn:3.0 quality %, and contain below the Si:0.7 quality %, below the Fe:0.8 quality %, below the Cu:3.0 quality %, below the Mn:0.8 quality %, below the Cr:0.5 quality %, below the Ti:0.1 quality %, among Zr:0.25 quality % is following at least a kind, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Keep described ingot casting more than 1 hour in the temperature that is lower than 350 ℃ more than 200 ℃, the heat treatment step of heat-treating thus; To make the slicing process of the aluminium alloy thick plate of specific thickness through heat treated ingot casting section.
From described the 5th to the 8th invention, preferably adopt following formation.
(C) preferably after described slicing process, carry out the surface of the aluminium alloy thick plate of specific thickness is implemented the surface smoothing treatment process of surface smoothing processing.Also have, in this constitutes, among cutting system, filing and polishing, select the method more than a kind to carry out described surface smoothing processing.
(D) in described slicing process, remove the thickness direction middle body from described ingot casting, this thickness direction middle body has impartial thickness from thickness direction central authorities towards each surface of thickness direction, and the thickness of establishing described ingot casting is when being T, and it has the thickness of total T/30～T/5.
The application's the 9th invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 12.0 quality % of Mg:1.5 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.6 quality % is following, Mn:1.0 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness; The aluminium alloy thick plate that keeps specific thickness in the temperature that is lower than 400 ℃ more than 200 ℃ is more than 1 hour, the heat treatment step of heat-treating thus.
The application's the tenth invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Mn:0.3 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.5 quality % is following, Mg:1.5 quality % is following, Cr:0.3 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness; The aluminium alloy thick plate that keeps specific thickness in the temperature that is lower than 400 ℃ more than 200 ℃ is more than 1 hour, the heat treatment step of heat-treating thus.
The application's the 11 invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Si:0.2 quality %, below the above 1.5 quality % of Mg:0.3 quality %, and contain below the Fe:0.8 quality %, below the Cu:1.0 quality %, below the Mn:0.6 quality %, below the Cr:0.5 quality %, below the Zn:0.4 quality %, below the Ti:0.1 quality %, among Zr:0.3 quality % is following at least a kind, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness; The aluminium alloy thick plate that keeps specific thickness in the temperature that is lower than 400 ℃ more than 200 ℃ is more than 1 hour, the heat treatment step of heat-treating thus.
The application's the 12 invention, it is a kind of method of making aluminium alloy thick plate by aluminium alloy, wherein, carry out following operation in order: the fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 4.0 quality % of Mg:0.4 quality %, below the above 9.0 quality % of Zn:3.0 quality %, and contain below the Si:0.7 quality %, below the Fe:0.8 quality %, below the Cu:3.0 quality %, below the Mn:0.8 quality %, below the Cr:0.5 quality %, below the Ti:0.1 quality %, at least a kind of the following the inside of Zr:0.25 quality %, and surplus is Al and inevitable impurity; The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen; Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen; Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting; Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness; The aluminium alloy thick plate that keeps specific thickness in the temperature that is lower than 350 ℃ more than 200 ℃ is more than 1 hour, the heat treatment step of heat-treating thus.
From described the 9th to the 12 invention, preferably adopt following formation.
(E) preferably after described heat treatment step, carry out the surface of aluminium alloy thick plate is implemented the surface smoothing treatment process of surface smoothing processing.Also have, in this constitutes, among cutting system, filing and polishing, select the method more than a kind to carry out described surface smoothing processing.
(F) in described slicing process, remove the thickness direction middle body from described ingot casting, this thickness direction middle body has impartial thickness from thickness direction central authorities towards each surface of thickness direction, and the thickness of establishing described ingot casting is when being T, and it has the thickness of total T/30～T/5.
The application's the 13 invention is the aluminium alloy thick plate of making according to any the manufacture method of aluminium alloy thick plate in described first～the 12 invention, and it has the following average crystal grain diameter of 400 μ m.
In described first to fourth invention, because the content of the element of the regulation of aluminium alloy is defined within the limits prescribed, so the miniaturization of the intermetallic compound of aluminium alloy thick plate and intensity improve.In addition, because remove hydrogen by dehydrogenation gas operation, so the hydrogen concentration in the ingot casting is limited, in addition, even thickization of crystal grain in the ingot casting can not make that hydrogen gathers at the crystal boundary of the near surface of ingot casting, multiviscosisty yet, the expansion of ingot casting and the rolling of aluminium alloy thick plate that causes because of expansion are inhibited, in addition, the potential defective that has a slab surface as the surface imperfection of slab is inhibited.In addition, the intensity of aluminium alloy thick plate improves.In addition, by filtering operation, oxide compound and nonmetal etc. inclusion are removed from aluminium alloy.Then, ingot casting is cut into slices through slicing process, so the minimizing of oxide scale film thickness, and the condition of surface of aluminium alloy thick plate, Flatness and thickness of slab precision improve productivity raising in addition.In addition, aluminium alloy thick plate is heat-treated, so internal stress is removed interior tissue homogenization in addition through heat treatment step.
Therefore, according to described first to fourth invention, can improve the intensity of aluminium alloy thick plate.In addition, make aluminium alloy thick plate because ingot casting cut into slices, that reduced thickness by hot rolling in the past so do not need picture, can realize the omissionization of flow chart, therefore can improve productivity.In addition, the inequality (tone inequality) in the surface and the cross section of slab can be eliminated, and appearance character and thickness of slab precision after Flatness, the alumite can be improved.In addition, because the aluminium alloy thick plate of the specific thickness after cutting into slices is implemented thermal treatment with 400 ℃ (or 350 ℃) to the temperature that is lower than fusing point, so can realize the removal of internal stress and the homogenization of interior tissue, can access good Flatness and thickness of slab precision, can keep intensity in addition.
According to described formation (A), can further improve the condition of surface and the Flatness of aluminium alloy thick plate.In addition, because the smoothing on surface makes the gas accumulation on slab surface disappear, when therefore aluminium alloy thick plate being used for vacuum unit and using chamber, can improve the vacuum tightness of chamber.
According to described formation (B), the middle body that uneven ingot casting takes place in the surface of the aluminium alloy thick plate after alumite and the cross section easily is removed, therefore, even can access the still excellent aluminium alloy thick plate of aesthetic appearance after alumite.In addition, the deviation in can reducing in batches.
In described the 5th to the 8th invention, because the content of the element of the regulation of aluminium alloy is defined within the limits prescribed, so can improve the miniaturization and the intensity of the intermetallic compound of aluminium alloy thick plate.In addition, because remove hydrogen by dehydrogenation gas operation, so the hydrogen concentration in the ingot casting is limited, even thickization of crystal grain in the ingot casting, can not make that hydrogen gathers at the crystal boundary of the near surface of ingot casting, multiviscosisty yet, the expansion of ingot casting and the rolling of aluminium alloy thick plate that causes because of expansion are inhibited, and in addition, the potential defective that has the slab surface as the surface imperfection of slab is inhibited.In addition, the intensity of aluminium alloy thick plate improves.In addition, by filtering operation, oxide compound and nonmetal etc. inclusion are removed from aluminium alloy.Then, ingot casting is heat-treated, so internal stress is removed interior tissue homogenization in addition through heat treatment step.In addition, ingot casting is cut into slices with slicing process, so the minimizing of oxide scale film thickness, and the condition of surface of aluminium alloy thick plate, Flatness and thickness of slab precision improve productivity raising in addition.
Therefore, according to described the 5th to the 8th invention, can improve the balance of Flatness, intensity and the machinability of aluminium alloy thick plate.Promptly, because more than 200 ℃, the temperature that is lower than 400 ℃ (or 350 ℃) implements thermal treatment to ingot casting, so can prevent ductility improves, machinability (smear metal disjunction) is reduced, can realize the removal of internal stress and the homogenization of interior tissue, therefore good Flatness and thickness of slab precision can be realized, intensity can be kept in addition.In addition, because be ingot casting to be cut into slices make aluminium alloy thick plate,,, can improve productivity so can realize the omissionization of flow chart so do not need by hot rolling thickness to be reduced as before.In addition, the inequality (tone inequality) in the surface and the cross section of slab can be eliminated, and appearance character and thickness of slab precision after Flatness, the alumite can be improved.
According to described formation (C), can further improve the condition of surface and the Flatness of aluminium alloy thick plate.In addition, because the smoothing on surface makes the gas accumulation on slab surface disappear, when therefore aluminium alloy thick plate being used for vacuum unit and using chamber, can improve the vacuum tightness of chamber.
According to described formation (D), the middle body that uneven ingot casting takes place in the surface of the aluminium alloy thick plate after alumite and the cross section easily is removed, therefore, even can access the still excellent aluminium alloy thick plate of aesthetic appearance after alumite.In addition, the deviation in can reducing in batches.
In described the 9th to the 12 invention, because the content of the element of the regulation of aluminium alloy is defined within the limits prescribed, so the miniaturization of the intermetallic compound of aluminium alloy thick plate and intensity improve.In addition, because remove hydrogen by dehydrogenation gas operation, so the hydrogen concentration in the ingot casting is limited, even thickization of crystal grain in the ingot casting, can not make that hydrogen gathers at the crystal boundary of the near surface of ingot casting, multiviscosisty yet, the expansion of ingot casting and the rolling of aluminium alloy thick plate that causes because of expansion are inhibited, and in addition, the potential defective that has the slab surface as the surface imperfection of slab is inhibited.In addition, the intensity of aluminium alloy thick plate improves.In addition, by filtering operation, oxide compound and nonmetal etc. inclusion are removed from aluminium alloy.Then, ingot casting is heat-treated, so internal stress is removed interior tissue homogenization in addition through heat treatment step.
Therefore, according to described the 9th to the 12 invention, can improve the intensity of aluminium alloy thick plate.In addition, make aluminium alloy thick plate because ingot casting cut into slices, that reduced thickness by hot rolling in the past so do not need picture, can realize the omissionization of flow chart, therefore can improve productivity.In addition, the inequality (tone inequality) in the surface and the cross section of slab can be eliminated, and appearance character and thickness of slab precision after Flatness, the alumite can be improved.Can improve the balance of Flatness, intensity and the machinability of aluminium alloy thick plate in addition.Promptly, because the aluminium alloy thick plate of the specific thickness after the temperature that is lower than 400 ℃ (or 350 ℃) more than 200 ℃ is to section is implemented thermal treatment, so can prevent ductility improves, machinability (smear metal disjunction) is reduced, can realize the removal of internal stress and the homogenization of interior tissue, good Flatness and thickness of slab precision can be realized, intensity can be kept in addition.
According to described formation (E), can further improve the condition of surface and the Flatness of aluminium alloy thick plate.In addition, because the smoothing on surface makes the gas accumulation on slab surface disappear, when therefore aluminium alloy thick plate being used for vacuum unit and using chamber, can improve the vacuum tightness of chamber.
According to described formation (F), the middle body that uneven ingot casting takes place in the surface of the aluminium alloy thick plate after alumite and the cross section easily is removed, therefore, even can access the still excellent aluminium alloy thick plate of aesthetic appearance after alumite.In addition, the deviation in can reducing in batches.
According to described the 13 invention, condition of surface, Flatness and thickness of slab precision excellence.In addition, because the smoothing on surface makes the gas accumulation on slab surface disappear, therefore reach high-quality.In addition, the appearance after the alumite can produce inequality hardly, therefore can use in diversified purposes, also can carry out the recycling to other purposes in addition.
Description of drawings
Fig. 1 is the figure of flow process of the manufacture method of expression first to fourth invention and the 9th to the 12 aluminium alloy thick plate of inventing.
Fig. 2 is the mode chart that is illustrated in the thickness direction middle body of the ingot casting of removing in the slicing process.
Fig. 3 is the figure of flow process of manufacture method of the aluminium alloy thick plate of expression the 5th to the 8th invention.Nomenclature
S1 fuses operation
S2 dehydrogenation gas operation
S3 filters operation
The S4 casting process
S5 slicing process or heat treatment step
S6 heat treatment step or slicing process
S7 surface smoothing treatment process
A thickness direction central authorities
B thickness direction middle body
T thickness
The I ingot casting
Embodiment
The limit is with reference to accompanying drawing, and the limit is described in detail for the manufacture method and the aluminium alloy thick plate of the aluminium alloy thick plate of the present application.Also have, this present application is divided into (A) first to fourth invention, (B) the 5th to the 8th invention, (C) the 9th to the 12 invention, and (D) the 13 invention describe.
(A) manufacture method of the aluminium alloy thick plate of first to fourth invention
(1) summary of manufacture method
The manufacture method of the aluminium alloy thick plate of first to fourth invention (following suitable be called " slab "), as shown in Figure 1, fuse operation (S1), dehydrogenation gas operation (S2), filtration operation (S3), casting process (S4), slicing process (S5), heat treatment step (S6) in order.In addition, as required afterwards, carry out surface smoothing treatment process (S7) at heat treatment step (S6).
In this manufacture method, at first, fused through fusion operation (S1) as the aluminium alloy of raw material.Secondly, from the aluminium alloy after the fusion, be removed through dehydrogenation gas operation (S2) hydrogen, operation (S3) after filtration again, oxide compound and inclusion such as nonmetal are removed.Then, this aluminium alloy is cast through casting process (S4) and becomes ingot casting.Then, this ingot casting is cut through slicing process (S5) and becomes the aluminium alloy thick plate of specific thickness.Thereafter, the aluminium alloy thick plate of specific thickness is carried out thermal treatment through heat treatment step (S6), and thereafter more as required, (S7) is carried out the surface smoothing processing by the surface smoothing treatment process.
(2) aluminium alloy
In the manufacture method of first to fourth invention, as the aluminium alloy that is raw material, using 5000 A1-Mg that are respectively is that the Al-Mn that alloy, 3000 is is that the Al-Mg-Si that alloy, 6000 is is that the Al-Zn-Mg that alloy and 7000 is is an alloy.Specific as follows.
(2-1) first invention
Using 5000 Al-Mg that are is alloy.This aluminium alloy contains more than the Mg:1.5 quality %, below the 12.0 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.6 quality % is following, Mn:1.0 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is made of Al and unavoidable impurities.
Below, the reason of carrying out numerical definiteness for the content with each composition is illustrated.
(more than the Mg:1.5 quality %, below the 12.0 quality %)
Mg has the effect of the intensity raising that makes aluminium alloy.If the content of Mg is lower than 1.5 quality %, then described effect is little.On the other hand, if the content of Mg surpasses 12.0 quality %, then castibility significantly reduces, and can not carry out the goods manufacturing.Therefore, the content of Mg is defined as more than the 1.5 quality %, below the 12.0 quality %.
(Si:0.7 quality % is following)
Si has the effect of the intensity raising that makes aluminium alloy.Si sneaks in the aluminium alloy as matrix metal impurity usually, and in casting process (S4) etc., it generates Al-(Fe)-(Mn)-Si series intermetallic compound with Mn and Fe in ingot casting.If the content of Si surpasses 0.7 quality %, then thick intermetallic compound produces in ingot casting, and therefore, inequality takes place the appearance after the alumite easily.Therefore, the content of Si is limited to below the 0.7 quality %.
(Fe:0.8 quality % is following)
The effect that Fe has is, makes grain refinement of Aluminum alloys, stabilization, and intensity is improved.Fe sneaks in the aluminium alloy as matrix metal impurity usually, and in casting process (S4) etc., it generates Al-Fe-(Mn)-(Si) series intermetallic compound with Mn and Si in ingot casting.If the content of Fe surpasses 0.8 quality %, then thick intermetallic compound produces in ingot casting, and therefore, inequality takes place the appearance after the alumite easily.Therefore, the content of Fe is limited to below the 0.8 quality %.
(Cu:0.6 quality % is following)
Cu has the effect of the intensity raising that makes aluminium alloy.But, in order to ensure as the use of slab the intensity that can tolerate, the content of Cu is that 0.6 quality % is just for fully.Therefore, the content of Cu is defined as below the 0.6 quality %.
(Mn:1.0 quality % is following)
The effect that Mn has is by solid solution in aluminium alloy intensity to be improved.If the content of Mn surpasses 1.0 quality %, then thick intermetallic deposits yields, so inequality takes place in appearance after the alumite easily.Therefore Mn content is limited to below the 1.0 quality %.
(Cr:0.5 quality % is following)
The effect that Cr has is in casting process (S4) and heat treatment step (S6), to separate out the inhibition crystal grain-growth as fine compound.If the content of Cr surpasses 0.5 quality %, then generate thick Al-Cr series intermetallic compound, so inequality takes place in appearance after the alumite easily as primary crystal.Therefore the content of Cr is limited to below the 0.5 quality %.
(Zn:0.4 quality % is following)
Zn has the effect of the intensity raising that makes aluminium alloy.But in order to ensure as the use of slab the intensity that can tolerate, the content of Zn is that 0.4 quality % is just for fully.Therefore, the content of Zn is limited to below the 0.4 quality %.
(Ti:0.1 quality % is following)
Ti has the effect of the crystal grain miniaturization that makes ingot casting.If the content of Ti surpasses 0.1 quality %, then described effect is saturated.Therefore the content of Ti is limited to below the 0.1 quality %.
(Zr:0.3 quality % is following)
Zn has the effect of the crystal grain miniaturization that makes ingot casting.If the content of Zn surpasses 0.3 quality %, then described effect is saturated.Therefore the content of Zn is limited to below the 0.3 quality %.
(Al and unavoidable impurities: surplus)
Aluminium alloy is except aforementioned composition, and surplus is made of Al and unavoidable impurities.As unavoidable impurities, for example thinking has V, B etc., if but these impurity content separately below 0.01 quality %, then can not have influence on the characteristic of aluminium alloy thick plate of the present invention.
(2-2) second invention
Using 3000 Al-Mn that are is alloy.This aluminium alloy contains more than the Mn:0.3 quality %, below the 1.6 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.5 quality % is following, Mg:1.5 quality % is following, Cr:0.3 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is made of Al and unavoidable impurities.
Below, the reason of carrying out numerical definiteness for the content with each composition is illustrated.
Also having, is that alloy is the same about qualification reason and the unavoidable impurities of Si, Fe, Cu, Cr, Zn, Ti and Zr with aforementioned Al-Mg, so in this description will be omitted.
(more than the Mn:0.3 quality %, below the 1.6 quality %)
The effect that Mn has is by solid solution in aluminium alloy intensity to be improved.If the content of Mn is lower than 0.3 quality %, then described effect is little.On the other hand, if the content of Mn surpasses 1.6 quality %, then thick intermetallic compound generates, and therefore, inequality takes place the appearance after the alumite easily.Therefore Mn content is limited to more than the 0.3 quality %, below the 1.6 quality %.
(Mg:1.5 quality % is following)
Mg has the effect of the intensity raising that makes aluminium alloy.But, in order to ensure as the use of slab the intensity that can tolerate, when the content of Mg is 1.5 quality % for fully.Therefore, the content of Mg is limited to below the 1.5 quality %.
(2-3) the 3rd invention
Using 6000 Al-Mg-Si that are is alloy.This aluminium alloy contains more than the Si:0.2 quality %, below the 1.6 quality %, more than the Mg:0.3 quality %, below the 1.5 quality %, and contain that Fe:0.8 quality % is following, Cu:1.0 quality % following, Mn:0.6 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, Zr:0.3 quality % at least a kind among following, and surplus is made of Al and unavoidable impurities.
Below, the reason of carrying out numerical definiteness for the content with each composition is illustrated.
Also having, is that alloy is the same about qualification reason and the unavoidable impurities of Fe, Mn, Cr, Ti and Zr with aforementioned Al-Mg, so in this description will be omitted.
(more than the Si:0.2 quality %, below the 1.6 quality %)
Si has the effect of the intensity raising that makes aluminium alloy.Si sneaks in the aluminium alloy as matrix metal impurity usually, and in casting process (S4) etc., it generates Al-(Fe)-Si series intermetallic compound and Si series intermetallic compound in ingot casting.If the content of Si is lower than 0.2 quality %, then described effect is little.On the other hand, if the content of Si surpasses 1.6 quality %, then thick intermetallic compound produces in ingot casting, and therefore, inequality takes place the appearance after the alumite easily.Therefore, the content of Si is limited to more than the 0.2 quality %, below the 1.6 quality %.
(more than the Mg:0.3 quality %, below the 1.5 quality %)
Mg and Si coexist and form Mg
2Si has the effect of the intensity raising that makes aluminium alloy thus.If the content of Mg is lower than 0.3 quality %, then described effect is little.On the other hand, if the content of Mg surpasses 1.5 quality %, then described effect is saturated.Therefore, the content of Mg is limited to more than the 0.3 quality %, below the 1.5 quality %.
(Cu:1.0 quality % is following)
Cu has the effect of the intensity raising that makes aluminium alloy.But if the content of Cu surpasses 1.0 quality %, then erosion resistance reduces.Therefore, the content of Cu is defined as below the 1.0 quality %.
(Zn:0.4 quality % is following)
Zn has the effect of the intensity raising of aluminium alloy.If the content of Zn surpasses 0.4 quality %, then erosion resistance reduces.Therefore, the content of Zn is limited to below the 0.4 quality %.
(2-4) the 4th invention
Using 7000 Al-Zn-Mg that are is alloy.This aluminium alloy contains more than the Mg:0.4 quality %, below the 4.0 quality %, more than the Zn:3.0 quality %, below the 9.0 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:3.0 quality % is following, Mn:0.8 quality % is following, Cr:0.5 quality % is following, Ti:0.1 quality % is following, Zr:0.25 quality % at least a kind among following, and surplus is made of Al and unavoidable impurities.
Below, the reason of carrying out numerical definiteness for the content with each composition is illustrated.
Also having, is that alloy is the same about qualification reason and the unavoidable impurities of Cr, Ti and Zr with aforementioned Al-Mg, so in this description will be omitted.
(more than the Mg:0.4 quality %, below the 4.0 quality %)
Mg has the effect of the intensity raising that makes aluminium alloy.If the content of Mg is lower than 0.4 quality %, then described effect is little.On the other hand, if the content of Mg surpasses 4.0 quality %, then inequality takes place in appearance after the alumite easily.Therefore, the content of Mg is defined as more than the 0.4 quality %, below the 4.0 quality %.
(more than the Zn:3.0 quality %, below the 9.0 quality %)
Zn has the effect of the intensity raising that makes aluminium alloy.If the content of Zn is lower than 3.0 quality %, then described effect is little.On the other hand, if the content of Zn surpasses 9.0 quality %, then inequality takes place in appearance after the alumite easily.Therefore, the content of Zn is defined as more than the 3.0 quality %, below the 9.0 quality %.
(Si:0.7 quality % is following)
Si sneaks in the aluminium alloy as matrix metal impurity usually, and in casting process (S4) etc., it generates Al-(Fe)-Si series intermetallic compound in ingot casting.If the content of Si surpasses 0.7 quality %, then thick Al-(Fe)-Si series intermetallic compound generates in ingot casting, and therefore, inequality takes place the appearance after the alumite easily.Therefore, the content of Si is limited to below the 0.7 quality %.
(Fe:0.8 quality % is following)
Fe sneaks in the aluminium alloy as matrix metal impurity usually, and in casting process (S4) etc., it generates the Al-Fe series intermetallic compound in ingot casting.If the content of Fe surpasses 0.8 quality %, then thick Al-Fe series intermetallic compound generates in ingot casting, and therefore, inequality takes place the appearance after the alumite easily.Therefore, the content of Fe is limited to below the 0.8 quality %.
(Cu:3.0 quality % is following)
Cu has the effect of the intensity raising that makes aluminium alloy.If the content of Cu surpasses 3.0 quality %, then erosion resistance reduces.Therefore, the content of Cu is defined as below the 3.0 quality %.
(Mn:0.8 quality % is following)
Mn has the effect that makes the crystal structure miniaturization.If the content of Mn surpasses 0.8 quality %, then thick intermetallic deposits yields.Inequality takes place in appearance after the alumite easily.Therefore, Mn content is limited to below the 0.8 quality %.
(3) detailed description of manufacture method
Next, describe for each operation in the manufacture method of first to fourth invention.
(3-1) fusion operation
Fusion operation (S1) is the operation that the aluminium alloy as raw material is fused.
(3-2) dehydrogenation gas operation
Dehydrogenation gas operation (S2) is the operation of removing hydrogen from the aluminium alloy after the fusion through fusing operation (S1).
Hydrogen takes place owing to the hydrogen in the fuel with attached to the moisture of matrix metal etc. and organism etc.If comprise hydrogen in a large number, then can there are the following problems.
(a) bubble generation.
(b) weakened of goods.
(c) at the crystal boundary of the near surface of ingot casting, hydrogen gathers, multiviscosisty.Therefore, the expansion of ingot casting can take place and the rolling of the slab that causes because of expansion.In addition, the potential defective on the slab surface that shows as the surface imperfection of slab produces.
Therefore, hydrogen preferably is below the 0.2ml, more preferably below the 0.1ml in aluminium alloy 100g.Removing of hydrogen, can suit to carry out by dilute (fluxing), chlorine refining or refine on line etc. for molten soup, in addition, in dehydrogenation unit, then can carry out better as if use sniffer (sniffer) and porous plug (porousplug) (opening the 2002-146447 communique) with reference to the spy.
The concentration of the hydrogen of ingot casting for example can be tried to achieve as follows.That is, the ingot casting behind the casting process downcuts sample.Then, with alcohols and acetone sample is carried out ultrasonic cleaning.Then, for example handle sample with inert gas flow fusion radiant heat method (LIS AO6-1993).
The concentration of the hydrogen of aluminium alloy thick plate for example can be tried to achieve as follows.That is, downcut sample from aluminium alloy thick plate.Then, sample is impregnated in the NaOH aqueous solution.Then, with the nitric acid treatment sample, remove the oxide scale film of specimen surface thus.Then, with alcohols and acetone sample is carried out ultrasonic cleaning.Then, for example handle sample with heating under vacuum extraction titration (LIS AO6-1993).
(3-3) filter operation
Filtering operation (S3) utilizes filtration unit mainly to remove the operation of oxide compound and nonmetallic inclusion from aluminium alloy.On filtration unit, be provided with the vitrified pipe (ceramic tube) of the aluminum oxide that has for example used the particle about 1mm.Molten soup is by described vitrified pipe, and described inclusion is removed thus.
Through aforesaid dehydrogenation gas operation and filtration operation, in ensuing casting process (S4), then can obtain ingot casting by the aluminium alloy of highly guaranteeing quality.In addition, because stores (scum silica frost dross) that can the controlled oxidation thing, so can reduce the time energy that scum silica frost is removed.
(3-4) casting process
Casting process (S4) be by the molten soup that makes aluminium alloy form rectangular shape etc. regulation shape and solidify, make the operation of ingot casting thus.For example, use casting device with junker mold.As castmethod, can adopt the semicontinuous casting method.In the semicontinuous casting method, the molten soup of open metal junker mold injection aluminium alloy takes out the aluminium alloy that solidifies continuously from the bottom of junker mold from last direction bottom, obtains the ingot casting of specific thickness thus.Also have, semicontinuous casting in which kind of mode of vertical and horizontal carries out can.
(3-5) slicing process
Slicing process (S5) is to be cut into slices and made the operation of the aluminium alloy thick plate of specific thickness by the ingot casting that casting process (S4) is made.As dicing method, can adopt slab section (slab slice) method.In the slab section method, by the ingot casting of aforesaid semicontinuous casting manufactured by sections such as band saw shears, thereby be cut along castmethod, obtain the aluminium alloy thick plate of specific thickness thus.The thickness of aluminium alloy thick plate is preferably 15～200mm, but is not particularly limited, but can the suitable change according to the purposes of slab.
As dicing method, preferably use band saw, but be not particularly limited, also can use the annular saw stapling machine, in addition also will be to use laser, hydraulic pressure etc.
If the section ingot casting then can access with rolled stock and compare the aluminium alloy thick plate that condition of surface, Flatness and thickness of slab precision etc. are excellent.For example, the Flatness (amount of warpage) that can access the every 1m of casting direction for 0.4mm following/1m length, and the thickness of slab precision be the aluminium alloy thick plates below ± 100 μ m.
In addition, as shown in Figure 2, in slicing process (S5), preferably remove the middle body B that represents with oblique line.Middle body B has impartial thickness from the A of thickness direction central authorities towards each surface of thickness direction, and the thickness of establishing ingot casting is when being T, and it has the thickness of total T/30～T/5.Also have in Fig. 2, middle body B has about T/5 thickness.At this, up and down thickness b1, the b2 of the middle body B of preferred ingot casting 1 are identical, but allow the difference about 30%.Also have, the so-called described thickness direction A of central authorities is the central authorities of the thickness direction of ingot casting 1, and is about 1/2, the i.e. place of about T/2 of the thickness T of ingot casting 1.
, at the middle body B of ingot casting 1, inequality takes place in slab surface and cross section after the alumite easily.Yet slicing process (S5) can be removed this middle body B, so can access the slab of the aesthetic appearance excellence after the alumite, in addition, can reduce interior in batches deviation.If the thickness removed is lower than T/30, the appearance that then takes place easily after the alumite has uneven slab, and the deviation in batches takes place easily in addition.On the other hand, if the thickness of removing surpasses T/5, then the amount of removing is too much, so productivity might reduce.Therefore, the amount of removing of the middle body B of ingot casting 1 is preferably, and from the A of thickness direction central authorities impartial thickness is arranged towards each surface of thickness direction, when the thickness of establishing ingot casting 1 is T, is defined as the thickness of T/30～T/5.
With after the ingot casting section, in ensuing heat treatment step (S6), implement the thermal treatment that turns to purpose with the homogeneous of interior tissue of removing with described slicing process (S5) with internal stress.By implementing thermal treatment, the appearance character after Flatness, thickness of slab precision and the alumite improves.
(3-6) heat treatment step
Heat treatment step (S6) is the operation of heat-treating (thermal treatment homogenizes) for the aluminium alloy thick plate of the specific thickness that is obtained by slicing process (S5).Thermal treatment is followed ordinary method and is implemented.Promptly, aluminium alloy is that 5000 Al-Mg that are are that alloy (first invention), 3000 Al-Mn that are are alloy (second invention) and 6000 Al-Mg-Si that are when being alloy (the 3rd invention), thermal treatment by more than 400 ℃, the temperature that is lower than fusing point keep 1 hour with on carry out.Aluminium alloy is 7000 Al-Zn-Mg that are when being alloy (the 4th invention), thermal treatment by more than 350 ℃, the temperature that is lower than fusing point keep 1 hour with on carry out.
, if the ingot casting that is obtained by casting process (S4) is carried out slice processing, then because internal residual stresses is released, so warpage takes place easily.Yet, in the present invention, the aluminium alloy thick plate of specific thickness after the slice processing is for example placed on the platform etc. heat-treat, so Flatness improves.
In first to the 3rd invention, if treatment temp is lower than 400 ℃, then the amount of removing of internal stress is little, in the casting solute element of segregation homogenize also insufficiently, it is little therefore to implement heat treated effect.Therefore, treatment temp is limited to more than 400 ℃.In addition, if treatment temp more than fusing point, then produces inner partial melting, subsurface defect takes place, and intensity, ductility reduce in addition.Therefore, treatment temp is defined as and is lower than fusing point.
In the 4th invention, if treatment temp is lower than 350 ℃, then the amount of removing of internal stress is little, in the casting solute element of segregation homogenize also insufficiently, it is little therefore to implement heat treated effect.Therefore, treatment temp is limited to more than 350 ℃.In addition, if treatment temp more than fusing point, then produces inner partial melting, subsurface defect takes place, and intensity, ductility reduce in addition.Therefore, treatment temp is defined as and is lower than fusing point.
If the treatment time is lower than 1 hour, then the solid solution of intermetallic compound is insufficient, and intermetallic compound is separated out easily.Therefore, the treatment time was defined as more than 1 hour.In addition, if the treatment time surpasses about 8 hours, then heat treated effect is saturated, therefore causes power loss.Therefore, preferably treatment is time qualified below 8 hours.
Carried out heat treated aluminium alloy thick plate through described heat treatment step (S6),,, also can carry out the surface smoothing processing as required perhaps in order to make the slab surface not have gas accumulation in order to remove slab formed crystallisate in surface and oxide compound.
(3-7) surface smoothing processing
Surface smoothing treatment process (S7) is to implement the operation of surface smoothing processing on the surface of the aluminium alloy thick plate that obtains through heat treatment step (S6).As the surface smoothing facture, can adopt the cutting system of end mill (end mill) cutting, diamond head (diamond bit) cutting etc.; Filing with grinding skins such as whetslates; Polishing polishings such as (buffing), but be not limited thereto.
When aluminium alloy thick plate is used for vacuum unit and uses chamber, implement surface smoothing and handle effective especially.It is the reasons are as follows.That is, vacuum unit is with chamber depressurization during to high vacuum, because from the release of the adsorbed gas of the inner surface of chamber, perhaps the gas atom of solid solution is discharged into the surface in slab, can cause that vacuum tightness reduces.Therefore, the time of vacuum tightness that reaches target is elongated, and production efficiency reduces.Therefore, be used for the aluminium alloy thick plate of chamber, the surperficial adsorbed gas of slab of inboard that just requires to be positioned at chamber is few, even and reach high vacuum, the gas atom of solid solution can not discharge yet in slab.Surface smoothing is handled this requirement is met.
(B) manufacture method of the aluminium alloy thick plate of the 5th to the 8th invention
(1) summary of manufacture method
The manufacture method of the aluminium alloy thick plate of the 5th to the 8th invention as shown in Figure 3, is fused operation (S1), dehydrogenation gas operation (S2) in order, is filtered operation (S3), casting process (S4), heat treatment step (S5), slicing process (S6).In addition as required, carry out surface smoothing treatment process (S7) afterwards at slicing process (S6).
In this manufacture method, at first, fused through fusion operation (S1) as the aluminium alloy of raw material.Secondly, from the aluminium alloy of fusion, be removed through dehydrogenation gas operation (S2) hydrogen, operation (S3) after filtration again, oxide compound and inclusion such as nonmetal are removed.Then, this aluminium alloy is cast through casting process (S4) and becomes ingot casting.Then, this ingot casting is cut into slices through slicing process (S6) and is become the aluminium alloy thick plate of specific thickness after heat treatment step (S5) is carried out thermal treatment.Thereafter, the aluminium alloy thick plate of specific thickness more as required, (S7) is carried out the surface smoothing processing by the surface smoothing treatment process.
(2) aluminium alloy
In the manufacture method of the 5th to the 8th invention, as the aluminium alloy that is raw material, using 5000 Al-Mg that are respectively is that the Al-Mn that alloy, 3000 is is that the Al-Mg-Si that alloy, 6000 is is that the Al-Zn-Mg that alloy and 7000 is is an alloy.Specific as follows.
(2-1) the 5th invention
Using 5000 Al-Mgs that are identical with first invention is alloy.The reason of the numerical definiteness of the composition of this aluminium alloy, component content and content is identical with first invention.
(2-2) the 6th invention
Using 3000 Al-Mns that are identical with second invention is alloy.The reason of the numerical definiteness of the composition of this aluminium alloy, component content and content is identical with first invention.
(2-3) the 7th invention
Using 6000 Al-Mg-Sis that are identical with the 3rd invention is alloy.The reason of the numerical definiteness of the composition of this aluminium alloy, component content and content is identical with the 3rd invention.
(2-4) the 8th invention
Using 7000 Al-Zn-Mgs that are identical with the 4th invention is alloy.The reason of the numerical definiteness of the composition of this aluminium alloy, component content and content is identical with the 4th invention.
(3) details of manufacture method
Next, each operation for the 5th to the 8th manufacture method of inventing describes.
(3-1) fusion operation
Identical with the fusion operation (S1) of first to fourth invention.
(3-2) dehydrogenation gas operation
Identical with the dehydrogenation gas operation (S2) of first to fourth invention.
(3-3) filter operation
Identical with the filtration operation (S3) of first to fourth invention.
(3-4) casting process
Identical with the casting process (S4) of first to fourth invention.
Before the ingot casting section that will obtain, in ensuing heat treatment step (S5), implement the thermal treatment that turns to purpose with the homogeneous of interior tissue of removing earlier with internal stress by casting process (S4).By described ingot casting is implemented thermal treatment, the appearance character after Flatness, thickness of slab precision and the alumite improves.
(3-5) heat treatment step
Heat treatment step (S5) is the operation of the ingot casting that is obtained by casting process (S4) being heat-treated (thermal treatment homogenizes).Thermal treatment is followed ordinary method and is implemented.Promptly, aluminium alloy is that 5000 Al-Mg that are are that alloy (the 5th invention), 3000 Al-Mn that are are alloy (the 6th invention) and 6000 Al-Mg-Si that are when being alloy (the 7th invention), thermal treatment by more than 200 ℃, be lower than 400 ℃ temperature keep 1 hour with on carry out.Aluminium alloy is 7000 Al-Zn-Mg that are when being alloy (the 8th invention), thermal treatment more than 200 ℃, be lower than 350 ℃ temperature keep 1 hour with on carry out.
In the 5th to the 7th invention, if treatment temp is lower than 200 ℃, then the amount of removing of internal stress is little, and it is little therefore to implement heat treated effect.Therefore, treatment temp is limited to more than 200 ℃.In addition, more than 400 ℃, then ductility improves as if treatment temp, and intensity and machinability reduce.Also have, the so-called machinability meaning is the smear metal disjunction.Preferred smear metal is got carefully by disjunction.Mention reason and be because, if smear metal is long, then can rotate with process tool (sword) tied up in knots, make the slab surface injured thus, make tool failure in addition.Therefore, treatment temp is defined as and is lower than 400 ℃.By heat-treating, intensity and machinability are reduced, and can improve Flatness and thickness of slab precision with such temperature condition.
In the 8th invention, if treatment temp is lower than 200 ℃, then the amount of removing of internal stress is little, and it is little therefore to implement heat treated effect.Therefore, treatment temp is limited to more than 200 ℃.In addition, more than 350 ℃, then ductility improves as if treatment temp, and intensity and machinability reduce.Also have, the so-called machinability meaning is the smear metal disjunction.Preferred smear metal is got carefully by disjunction.Mention reason and be because, if smear metal is long, then can rotate with process tool (sword) tied up in knots, make the slab surface injured thus, make tool failure in addition.Therefore, treatment temp is defined as and is lower than 350 ℃.By heat-treating, intensity and machinability are reduced, and can improve Flatness and thickness of slab precision with such temperature condition.
If the treatment time is lower than 1 hour, then the solid solution of intermetallic compound is insufficient, and intermetallic compound is separated out easily.Therefore, the treatment time was defined as more than 1 hour.In addition, if the treatment time surpasses about 8 hours, then heat treated effect is saturated, therefore causes power loss.Therefore, preferably treatment is time qualified below 8 hours.
(3-6) slicing process
Slicing process (S6) is will obtain that ingot casting is cut into slices through heat treatment step (S5) and the operation of making the aluminium alloy thick plate of specific thickness.Details are with identical with first to fourth slicing process of inventing (S5).
Aluminium alloy thick plate by described slicing process (S6) obtains in order to remove slab formed crystallisate in surface and oxide compound, perhaps in order to make the slab surface not have gas accumulation, also can carry out the surface smoothing processing as required.
(3-7) surface smoothing processing
Surface smoothing treatment process (S7) is to implement the operation of surface smoothing processing on the surface of the aluminium alloy thick plate that obtains through slicing process (S6).Details are identical with the surface smoothing treatment process (S7) of first to fourth invention.
(C) manufacture method of the aluminium alloy thick plate of the 9th to the 12 invention
(1) summary of manufacture method
The manufacture method of the aluminium alloy thick plate of the 9th to the 12 invention as shown in Figure 1, is fused operation (S1), dehydrogenation gas operation (S2) in order, is filtered operation (S3), casting process (S4), slicing process (S5), heat treatment step (S6).In addition as required, carry out surface smoothing treatment process (S7) afterwards at heat treatment step (S6).
In this manufacture method, at first, fused through fusion operation (S1) as the aluminium alloy of raw material.Secondly, from the aluminium alloy of fusion, be removed through dehydrogenation gas operation (S2) hydrogen, operation (S3) after filtration again, oxide compound and inclusion such as nonmetal are removed.Then, this aluminium alloy is cast through casting process (S4) and becomes ingot casting.Then, this ingot casting is cut through slicing process (S5) and becomes the aluminium alloy thick plate of specific thickness.Thereafter, the aluminium alloy thick plate of specific thickness is carried out thermal treatment through heat treatment step (S6), and thereafter more as required, (S7) is carried out the surface smoothing processing by the surface smoothing treatment process.
(2) aluminium alloy
In the manufacture method of the 9th to the 12 invention, as the aluminium alloy that is raw material, using 5000 Al-Mg that are respectively is that the Al-Mn that alloy, 3000 is is that the Al-Mg-Si that alloy, 6000 is is that the Al-Zn-Mg that alloy and 7000 is is an alloy.Specific as follows.
(2-1) the 9th invention
Using 5000 Al-Mgs that are identical with first invention is alloy.The reason of the numerical definiteness of the composition of this aluminium alloy, component content and content is identical with first invention.
(2-2) the tenth invention
Using 3000 Al-Mns that are identical with second invention is alloy.The reason of the numerical definiteness of the composition of this aluminium alloy, component content and content is identical with first invention.
(2-3) the 11 invention
Using 6000 Al-Mg-Sis that are identical with the 3rd invention is alloy.The reason of the numerical definiteness of the composition of this aluminium alloy, component content and content is identical with the 3rd invention.
(2-4) the 12 invention
Using 7000 Al-Zn-Mgs that are identical with the 4th invention is alloy.The reason of the numerical definiteness of the composition of this aluminium alloy, component content and content is identical with the 4th invention.
(3) details of manufacture method
Next, each operation for the 9th to the 12 manufacture method of inventing describes.
(3-1) fusion operation
Identical with the fusion operation (S1) of first to fourth invention.
(3-2) dehydrogenation gas operation
Identical with the dehydrogenation gas operation (S2) of first to fourth invention.
(3-3) filter operation
Identical with the filtration operation (S3) of first to fourth invention.
(3-4) casting process
Identical with the casting process (S4) of first to fourth invention.
(3-5) slicing process
Identical with the slicing process (S5) of first to fourth invention.
(3-6) heat treatment step
Heat treatment step (S6) to obtain by slicing process (S5), the aluminium alloy thick plate of specific thickness heat-treats the operation of (thermal treatment homogenizes).Thermal treatment is followed ordinary method and is implemented.Promptly, aluminium alloy is that 5000 Al-Mg that are are that alloy (the 9th invention), 3000 Al-Mn that are are alloy (the tenth invention) and 6000 Al-Mg-Si that are when being alloy (the 11 invention), thermal treatment by more than 200 ℃, be lower than 400 ℃ temperature keep 1 hour with on carry out.Aluminium alloy is 7000 Al-Zn-Mg that are when being alloy (the 12 invention), thermal treatment by more than 200 ℃, be lower than 350 ℃ temperature keep 1 hour with on carry out.Other details are identical with the heat treatment step (S6) of first to fourth invention.
In the 9th to the 11 invention, if treatment temp is lower than 200 ℃, then the amount of removing of internal stress is little, and it is little therefore to implement heat treated effect.Therefore, treatment temp is limited to more than 200 ℃.In addition, more than 400 ℃, then ductility improves as if treatment temp, and intensity and machinability reduce.Also have, the so-called machinability meaning is the smear metal disjunction.Preferred smear metal is got carefully by disjunction.Mention reason and be because, if smear metal is long, then can rotate with process tool (sword) tied up in knots, make the slab surface injured thus, make tool failure in addition.Therefore, treatment temp is defined as and is lower than 400 ℃.By heat-treating, intensity and machinability are reduced, and can improve Flatness and thickness of slab precision with such temperature condition.
In the 12 invention, if treatment temp is lower than 200 ℃, then the amount of removing of internal stress is little, and it is little therefore to implement heat treated effect.Therefore, treatment temp is limited to more than 200 ℃.In addition, more than 350 ℃, then ductility improves as if treatment temp, and intensity and machinability reduce.Also have, the so-called machinability meaning is the smear metal disjunction.Preferred smear metal is got carefully by disjunction.Mention reason and be because, if smear metal is long, then can rotate with process tool (sword) tied up in knots, make the slab surface injured thus, make tool failure in addition.Therefore, treatment temp is defined as and is lower than 350 ℃.By heat-treating, intensity and machinability are reduced, and can improve Flatness and thickness of slab precision with such temperature condition.
If the treatment time is lower than 1 hour, then the solid solution of intermetallic compound is insufficient, and intermetallic compound is separated out easily.Therefore, the treatment time was defined as more than 1 hour.In addition, if the treatment time surpasses about 8 hours, then heat treated effect is saturated, therefore causes power loss.Therefore, preferably treatment is time qualified below 8 hours.
(3-7) surface smoothing treatment process
Identical with the surface smoothing treatment process (S7) of first to fourth invention.
(D) the 13 invention
Next, describe for aluminium alloy thick plate of the present invention.
This aluminium alloy thick plate is made according to any manufacture method in aforesaid the first to the 12 invention, has the following average crystal grain diameter of 400 μ m.
According to aluminium alloy thick plate of the present invention,,, can reduce interior in batches deviation in addition so can improve the aesthetic appearance after the alumite because average crystal grain diameter is below the 400 μ m.
In addition, if the size of the intermetallic compound in the slab is big, then when alumite, uneven (tone inequality) can take place in the cross section of slab and surface.But according to aluminium alloy thick plate of the present invention, the size of intermetallic compound is little, therefore is difficult to take place uneven.
The mensuration of aforesaid crystal grain diameter is for example carried out as follows.That is, when the thickness of establishing ingot casting is T, towards the opposing party's surface, tries to achieve measured value in the thick section at this 4 place of T/5,2T/5,3T/5 and 4T/5, and ask it average from a side's of ingot casting surface.As the method for trying to achieve this measured value, for example can adopt the process of chopping.In the process of chopping, be after with the Barker method etching being carried out in the cross section of aluminium alloy thick plate, to utilize opticmicroscope to observe.
Method as average crystal grain diameter being controlled at below the 400 μ m for example can adopt following method.That is the speed of cooling (average cooling rate from liquidus temperature to solidus temperature) when, making casting is more than 0.2 ℃/second.In addition, when implementing the manufacture method of first to the 3rd invention, the 5th to the 7th invention, the 9th to the 11 invention, by making aluminium alloy contain Ti or the Zr below the 0.3 quality % below the 0.1 quality %, can further make the crystal grain diameter miniaturization, in addition when implementing the manufacture method of the 4th invention, the 8th invention, the 12 invention, by making aluminium alloy contain Ti or the Zr below the 0.25 quality % below the 0.1 quality %, can further make the crystal grain diameter miniaturization.
By the aluminium alloy thick plate that obtains of manufacture method of aforementioned the first to the 12 invention, as described above, condition of surface, Flatness and thickness of slab precision are good, therefore can be at bed-plate, carrying device, the vacuum unit semi-conductor connection device with chamber etc.; Motor electronic parts and manufacturing installation thereof; Daily necessities; Use in the various uses such as mechanical part, also can carry out recycling in addition to other purposes.
Also having, about the erosion resistance of aluminium alloy thick plate, is not problem.Its reason be because, bed-plate uses cleaning shop (clean room) in slab with slab and carrying device, does not therefore need general erosion resistance.In addition, vacuum unit is with the employed slab of chamber, because use under the environment that seldom is exposed to corrosive gases, so do not need strict erosion resistance.
More than, for preferred embodiment being illustrated of the present application, but the present invention is not limited to aforementioned embodiments.
Embodiment
Below, describe for the embodiment of the present application.
(1) first embodiment
Present embodiment relates to first invention.The aluminium alloy that uses in the present embodiment is that 5000 Al-Mg that are are alloy.
Alloy 1A～12A shown in the table 1 is used as the embodiment alloy, with alloy 13A～22A alloy use as a comparative example.
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 1A～22A, make the ingot casting of thickness of slab 500mm.
Then, make section material and hot rolling material by described ingot casting.The section material is handled described ingot casting with slicing process and is obtained.Hot rolling material carries out hot rolling and obtains behind the described ingot casting of thermal treatment.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, kept described section material 4 hours with 500 ℃.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to first manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 1A～22A to work as in first inventive embodiment.
Next, carry out following test for section material after the described processing and hot rolling material.
(flatness evaluation test)
Flatness is estimated, and for the section material, it is an amount of warpage (Flatness) of measuring the every 1m of casting direction, and for hot rolling material, it is an amount of warpage (Flatness) of measuring the every 1m of rolling direction.Flatness is that the following situation of 0.4mm/1m length is qualified (zero), and the situation that surpasses 0.4mm/1m length is defective (*).
(thickness of slab precision evaluation test)
The thickness of slab precision evaluation, it is to use milscale (micrometer) to measure the thickness at position, 6 place.Position, 6 place is 4 jiaos of slab, and from 1/2nd positions of the length direction on the long limit of slab to the position of the inboard 20mm of width.Position, 6 place all is that the situation that 19.94mm is above, 20.06mm is following is good (◎), is qualified (zero) in the situation more than the 19.90mm, below the 20.10mm.
(strength trial)
Strength trial is carried out as follows.That is, make JIS5 by aluminium alloy thick plate and be test film, this test film is carried out tension test, measure tensile strength and 0.2% yield strength.Tensile strength is at 180N/mm
2Above situation is qualified (zero), and tensile strength is lower than 180N/mm
2Situation is defective (*).
(alumite evaluation test)
The alumite evaluation is carried out as follows.In the surface and the cross section of aluminium alloy thick plate,, form thick 10 μ m aluminum oxide epitheliums by the Tai-Ace S 150 anodizing.Treatment condition are 15% sulfuric acid, 20 ℃, current density 2A/dm
2Then, observe the surface of slab and the outward appearance in cross section.It is qualified (zero) that outward appearance does not have the situation of inequality (tone inequality), and uneven situation defective (*) is arranged.
Also have, because the crystal grain diameter of slab is influential to alumite, so will try to achieve the average crystal grain diameter of slab.The mensuration of average crystal grain diameter is carried out as follows.That is, when the thickness of establishing aluminium alloy thick plate is T, towards the opposing party's surface, tries to achieve measured value in the thick section at this 4 place of T/5,2T/5,3T/5 and 4T/5, and ask it average from a side's of slab surface.In addition, adopt the process of chopping as the method for trying to achieve this measured value.That is, with the Barker method etching is carried out in the cross section of aluminium alloy thick plate after, utilize opticmicroscope to observe.
Test-results is presented in table 2 and the table 3.
[table 2]
Table 2 shows the test-results about the section material.In table 2, alloy 1A～12A is equivalent to embodiment, and alloy 13A～22A is equivalent to comparative example.Table 3 shows the test-results about hot rolling material.In table 3, alloy 1A～22A all is equivalent to comparative example.
(about the section material)
As shown in table 2, under the situation of alloy 1A～13A, 15A～22A, processing should tail off, and warpage is little.That is, Flatness is good.The thickness of slab precision is also excellent in addition.
Under the situation of alloy 14A,,, cannot make so casting crack takes place because the content of Mg surpasses higher limit.Under the situation of alloy 13A, because the content of Mg is lower than lower value, so undercapacity.
Under the situation of alloy 1A～13A, 17A, 20A～22A, the outward appearance on the surface after the alumite does not produce inequality.Under the situation of alloy 15A, 16A, 18A, 19A, respectively because the content of Si, Fe, Mn, Cr surpasses higher limit, so produce thick intermetallic compound, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 1A～13A, 15A～22A, the outward appearance in the cross section after the alumite does not produce inequality.
Also have, under the situation of alloy 17A, 20A, 21A, 22A, respectively because the content of Cu, Zn, Ti, Zr surpasses higher limit, so saturated based on their effect, less economical.
(about hot rolling material)
As shown in table 3, under the situation of alloy 1A～13A, 15A～22A, the processing strain is accumulated, and the warpage of rolling direction is big.Be that Flatness is bad.The thickness of slab precision is compared with the section material in addition, and is poor slightly mostly.
Under the situation of alloy 14A,,, cannot make so casting crack takes place because the content of Mg surpasses higher limit.Under the situation of alloy 13A, because the content of Mg is lower than lower value, so undercapacity.
Under the situation of alloy 15A, 16A, 18A, 19A, respectively because the content of Si, Fe, Mn, Cr surpasses higher limit, so produce thick intermetallic compound, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 1A～13A, 15A～22A, the outward appearance in the cross section after the alumite produces uneven.
(2) second embodiment
Present embodiment relates to first invention.In the present embodiment, use the alloy 3A shown in the table 1.
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 3A, make the ingot casting of thickness of slab 500mm.
Then, handle described ingot casting, obtain the material of cutting into slices with slicing process.The section material is the aluminium alloy thick plate of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, described section material is heat-treated with the condition shown in the table 4.
[table 4]
Therefore, A1 and A2 that heat-treat condition satisfies first invention are equivalent to first inventive embodiment, and A3～A5 that heat-treat condition does not satisfy first invention is equivalent to comparative example.
For the section material after the aforementioned processing, carry out flatness evaluation test and thickness of slab precision evaluation test.
(flatness evaluation test)
Flatness is estimated, and it is an amount of warpage (Flatness) of measuring the every 1m of casting direction.Flatness is that the following situation of 0.4mm/1m length is qualified (zero), and the following situation of 0.25mm/1m length is good (◎).
(thickness of slab precision evaluation test)
Identical about thickness of slab precision evaluation test with the situation of first embodiment.
Test-results is presented in the table 4.
As shown in table 4, embodiment 1A, 2A are because heat-treat condition satisfies first invention, so Flatness and thickness of slab precision are good.Comparative examples A 3 is not because heat-treat, so compare with embodiment 1A, 2A, Flatness and thickness of slab precision are poor slightly.Comparative examples A 4 is because treatment temp is than first scope of invention low (being lower than 400 ℃), so compare with embodiment 1A, 2A, Flatness is poor slightly.Comparative example 5A because treatment temp than the first scope of invention height (surpass fusing point), so inner part generation fusion and cause subsurface defect so can not become goods.
(3) the 3rd embodiment
Present embodiment relates to second invention.The aluminium alloy that uses in the present embodiment is 3000 to be that Al-Mn is an alloy.
Use alloy 23A, the 24A shown in the table 5 as the embodiment alloy, use alloy 25A, 26A alloy as a comparative example.
[table 5]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 23A～26A, make the ingot casting of thickness of slab 500mm.
Then, make section material and hot rolling material by described ingot casting.The section material is handled described ingot casting with slicing process and is obtained.Hot rolling material carries out hot rolling and obtains behind the described ingot casting of thermal treatment.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, kept described section material 4 hours with 500 ℃.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to second manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 23A, 24A to work as in second inventive embodiment.
Next, carry out flatness evaluation test, thickness of slab precision evaluation test, strength trial and alumite evaluation test for section material after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 90N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 90N/mm
2The time defective (*).
Test-results is presented in the table 6.
[table 6]
(about the section material)
As shown in table 6, under the situation of alloy 23A～26A, processing should tail off, and warpage is little.That is, Flatness is good.The thickness of slab precision is also excellent in addition.
Under the situation of alloy 25A, because the content of Mn is lower than lower value, so undercapacity.Under the situation of alloy 26A, so the content of Mn surpasses higher limit, so thick intermetallic deposits yields, the outward appearance that alumilite process is handled the rear surface takes place uneven.Under the situation of alloy 23A～26A, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
As shown in table 6, under the situation of alloy 23A～26A, the processing strain is accumulated, and the warpage of rolling direction is big.Be that Flatness is bad.The thickness of slab precision is compared with the section material in addition, and is poor slightly mostly.
Under the situation of alloy 25A, because the content of Mn is lower than lower value, so compare with other hot rolling materials, intensity is poor slightly.Under the situation of alloy 26A, because the content of Mn surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite produces uneven.Under the situation of alloy 23A～26A, the generation inequality in appearance in the cross section after the alumite.
(4) the 4th embodiment
Present embodiment is equivalent to the 3rd invention.The aluminium alloy that uses in the present embodiment is that 6000 Al-Mg-Si that are are alloy.
Use alloy 27A, the 28A shown in the table 7 as the embodiment alloy, use alloy 29A～32A alloy as a comparative example.
[table 7]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 27A～32A, make the ingot casting of thickness of slab 500mm.
Then, make section material and hot rolling material by described ingot casting.The section material is handled described ingot casting with slicing process and is obtained.Hot rolling material carries out hot rolling and obtains behind the described ingot casting of thermal treatment.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, kept described section material 4 hours with 500 ℃.
With 520 ℃ section material and the hot rolling material that obtains carried out solution treatment again, carry out 8 hours ageing treatment with 175 ℃ again.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 3rd manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 27A, 28A to work as in the 3rd inventive embodiment.
Next, make a strength test and the alumite evaluation test for section material after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 200N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 200N/mm
2The time defective (*).
Test-results is presented in the table 8.
[table 8]
(about the section material)
As shown in table 8, under the situation of alloy 29A, 31A, respectively because the content of Si, Mg is lower than lower value, so undercapacity.Under the situation of alloy 30A, because the content of Si surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite produces uneven.Under the situation of alloy 32A, because the content of Mg surpasses higher limit, so saturated based on the effect of Mg, less economical.Under the situation of alloy 27A～32A, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
As shown in table 8, under the situation of alloy 29A, 31A, respectively because the content of Si, Mg is lower than lower value, so undercapacity.Under the situation of alloy 30A, because the content of Si surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite produces uneven.Under the situation of alloy 32A, because the content of Mg surpasses higher limit, so saturated based on the effect of Mg, less economical.Under the situation of alloy 27A～32A, the outward appearance in the cross section after the alumite produces uneven.
(5) the 5th embodiment
Present embodiment relates to the 4th invention.The aluminium alloy that uses in the present embodiment is that 7000 Al-Zn-Mg that are are alloy.
Use alloy 33A, the 34A shown in the table 9 as the embodiment alloy, use alloy 35A～38A alloy as a comparative example.
[table 9]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 33A～38A, make the ingot casting of thickness of slab 500mm.
Then, make section material and hot rolling material by described ingot casting.The section material is handled described ingot casting with slicing process and is obtained.Hot rolling material carries out hot rolling and obtains behind the described ingot casting of thermal treatment.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, kept described section material 4 hours with 500 ℃.
With 470 ℃ section material and the hot rolling material that obtains carried out solution treatment again, carry out 48 hours ageing treatment with 120 ℃ again.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 4th manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 33A, 34A to work as in the 4th inventive embodiment.
Next, make a strength test and the alumite evaluation test for section material after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 250N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 250N/mm
2The time defective (*).
Test-results is presented in the table 10.
[table 10]
(about the section material)
As shown in table 10, under the situation of alloy 35A, 37A, respectively because the content of Mg, Zn is lower than lower value, so undercapacity.Under the situation of alloy 36A, 38A, respectively because the content of Mg, Zn surpasses higher limit, so the outward appearance on the surface after the alumite produces inequality.Under the situation of alloy 33A～38A, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
As shown in table 10, under the situation of alloy 35A, 37A, respectively because the content of Mg, Zn is lower than lower value, so undercapacity.Under the situation of alloy 36A, 38A, respectively because the content of Mg, Zn surpasses higher limit, so the outward appearance on the surface after the alumite produces inequality.Under the situation of alloy 33A～38A, the outward appearance in the cross section after the alumite produces uneven.
(6) the 6th embodiment
Present embodiment relates to the 5th invention.The aluminium alloy that uses in the present embodiment is that 5000 Al-Mg that are are alloy.
Use the alloy 1B～12B shown in the table 11 as the embodiment alloy, use alloy 13B～22B alloy as a comparative example.
[table 11]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 1B～22B, make the ingot casting of thickness of slab 500mm.
Then, handle described ingot casting with heat treatment step.That is, kept described ingot casting 4 hours with 350 ℃.
Then, make section material and hot rolling material by the ingot casting after the thermal treatment.The section material is handled ingot casting with slicing process and is obtained.Hot rolling material is a hot rolling ingot and obtaining.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 5th manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 1B～22B to work as in the 5th inventive embodiment.
Next, carry out flatness evaluation test, thickness of slab precision evaluation test, strength trial and alumite evaluation test for section material after the described processing and hot rolling material.The method of each test is identical with the situation of first embodiment with judgement criteria.
Test-results is presented in table 12 and the table 13.
[table 12]
Show test-results in the table 12 about the section material.In table 12, alloy 1B～12B is equivalent to the 5th inventive embodiment, and alloy 13B～22B is equivalent to comparative example.Table 13 shows the test-results about hot rolling material.In table 13, alloy 1B～22B all is equivalent to comparative example.
(about the section material)
As shown in table 12, under the situation of alloy 1B～13B, 15B～22B, processing should tail off, and warpage is little.That is, Flatness is good.The thickness of slab precision is also excellent in addition.
Under the situation of alloy 14B,,, cannot make so casting crack takes place because the content of Mg surpasses higher limit.Under the situation of alloy 13B, because the content of Mg is lower than lower value, so undercapacity.
Under the situation of alloy 1B～13B, 17B, 20B～22B, inequality does not take place in the outward appearance on the surface after the alumite.Under the situation of alloy 15B, 16B, 18B, 19B, respectively because the content of Si, Fe, Mn, Cr surpasses higher limit, so produce thick intermetallic compound, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 1B～13B, 15B～22B, the outward appearance in the cross section after the alumite does not produce inequality.
Also have, under the situation of alloy 17B, 20B, 21B, 22B, respectively because the content of Cu, Zn, Ti, Zr surpasses higher limit, so saturated based on their effect, less economical.
(about hot rolling material)
As shown in table 13, under the situation of alloy 1B～13B, 15B～22B, the processing strain is accumulated, and the warpage of rolling direction is big.Be that Flatness is bad.The thickness of slab precision is compared with the section material in addition, and is poor slightly mostly.
Under the situation of alloy 14B,,, cannot make so casting crack takes place because the content of Mg surpasses higher limit.Under the situation of alloy 13B, because the content of Mg is lower than lower value, so undercapacity.
Under the situation of alloy 15B, 16B, 18B, 19B, respectively because the content of Si, Fe, Mn, Cr surpasses higher limit, so produce thick intermetallic compound, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 1B～13B, 15B～22B, the outward appearance in the cross section after the alumite produces uneven.
(7) the 7th embodiment
Present embodiment relates to the 5th invention.In the present embodiment, use the alloy 3B shown in the table 11.
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 3B, make the ingot casting of thickness of slab 500mm.
Then, handle described ingot casting with heat treatment step.That is, described ingot casting is heat-treated with the condition shown in the table 14.
Then, the ingot casting with after the slicing process processing thermal treatment obtains the material of cutting into slices.The section material is the aluminium alloy thick plate of thick 20mm * wide 1000mm * long 2000mm.
[table 14]
Therefore, B1 and B2 that heat-treat condition satisfies the 5th invention are equivalent to the 5th inventive embodiment, and B3～B5 that heat-treat condition does not satisfy the 5th invention is equivalent to comparative example.
For the section material after the aforementioned processing, carry out flatness evaluation test, thickness of slab precision evaluation test and machinability evaluation test.
(flatness evaluation test)
Flatness is estimated, and it is an amount of warpage (Flatness) of measuring the every 1m of casting direction.Flatness is that the following situation of 0.4mm/1m length is qualified (zero), and the situation that surpasses 0.4mm/1m length is defective (*).
(thickness of slab precision evaluation test)
Identical about thickness of slab precision evaluation test with the situation of first embodiment.
(machinability evaluation test)
Machinability is the evaluation of smear metal disjunction, is to be undertaken by measuring the number of carrying out the unit mass of the smear metal that opening adds man-hour with drill bit.Specifically, use diameter 5mm
Drill bit, with rotating speed 7000rpm with give speed 300mm/ and divide and to carry out hole processing, measure the number of the every 10g smear metal that takes place.The above situation of 1000/10g is qualified (zero), the situation of 1000/10g defective (*).
Test-results is presented in the table 14.
As shown in table 14, Embodiment B 1, B2 are because heat-treat condition satisfies the 5th invention, so Flatness, thickness of slab precision and machinability are good.Comparative example B3 is not because heat-treat, so Flatness is bad, it is poor slightly that the thickness of slab precision is compared with Embodiment B 1, B2.Comparative example B4 because treatment temp than the 5th scope of invention height, so machinability is poor.Comparative example B5 is because treatment temp is lower than the 5th scope of invention, so Flatness is bad, it is poor slightly that the thickness of slab precision is compared with Embodiment B 1, B2.
(8) the 8th embodiment
Present embodiment relates to the 6th invention.The aluminium alloy that uses in the present embodiment is that 3000 Al-Mn that are are alloy.
Use alloy 23B, the 24B shown in the table 15 as the embodiment alloy, use alloy 25B, 26B alloy as a comparative example.
[table 15]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 23B～26B, make the ingot casting of thickness of slab 500mm.
Then, handle described ingot casting with heat treatment step.That is, kept described ingot casting 4 hours with 350 ℃.
Then, make section material and hot rolling material by the ingot casting after the thermal treatment.The section material is handled ingot casting with slicing process and is obtained.Hot rolling material obtains by hot rolling ingot.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 6th manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 23B, 24B to work as in the 6th inventive embodiment.
Then, carry out flatness evaluation test, thickness of slab precision evaluation test, strength trial and alumite evaluation test for section material after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 90N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 90N/mm
2The time defective (*).
Test-results is presented in the table 16.
[table 16]
(about the section material)
Shown in table 16, under the situation of alloy 23B～26B, processing should tail off, and warpage is little.That is, Flatness is good.The thickness of slab precision is also excellent in addition.
Under the situation of alloy 25B, because the content of Mn is lower than lower value, so undercapacity.Under the situation of alloy 26B, because the content of Mn surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 23B～26B, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
Shown in table 16, under the situation of alloy 23B～26B, the processing strain is accumulated, and the warpage of rolling direction is big.Be that Flatness is bad.The thickness of slab precision is compared with the section material in addition, and is poor slightly mostly.
Under the situation of alloy 25B, because the content of Mn is lower than lower value, so compare with other hot rolling materials, intensity is poor slightly.Under the situation of alloy 26B, because the content of Mn surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 23B～26B, the outward appearance in the cross section after the alumite produces uneven.
(9) the 9th embodiment
Present embodiment relates to the 7th invention.The aluminium alloy that uses in the present embodiment is that 6000 Al-Mg-Si that are are alloy.
Use alloy 27B, the 28B shown in the table 17 as the embodiment alloy, use alloy 29B～32B alloy as a comparative example.
[table 17]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 27B～32B, make the ingot casting of thickness of slab 500mm.
Then, handle described ingot casting with heat treatment step.That is, kept described ingot casting 4 hours with 350 ℃.
Then, make section material and hot rolling material by the ingot casting after the thermal treatment.The section material is handled ingot casting with slicing process and is obtained.Hot rolling material obtains by hot rolling ingot.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
With 520 ℃ section material and the hot rolling material that obtains carried out solution treatment again, carry out 8 hours ageing treatment with 175 ℃ again.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 7th manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 27B, 28B to work as in the 7th inventive embodiment.
Then, make a strength test and the alumite evaluation test for section after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 200N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 200N/mm
2The time defective (*).
Test-results is presented in the table 18.
[table 18]
(about the section material)
Shown in table 18, under the situation of alloy 29B, 31B, respectively because the content of Si, Mg is lower than lower value, so undercapacity.Under the situation of alloy 30B, because the content of Si surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite produces uneven.Under the situation of alloy 32B, because the content of Mg surpasses higher limit, so saturated based on the effect of Mg, less economical.Under the situation of alloy 27B～32B, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
Shown in table 18, under the situation of alloy 29B, 31B, respectively because the content of Si, Mg is lower than lower value, so undercapacity.Under the situation of alloy 30B, because the content of Si surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite produces uneven.Under the situation of alloy 32B, because the content of Mg surpasses higher limit, so saturated based on the effect of Mg, less economical.Under the situation of alloy 27B～32B, the outward appearance in the cross section after the alumite produces uneven.
(10) the tenth embodiment
Present embodiment relates to the 8th invention.The aluminium alloy that uses in the present embodiment is that 7000 Al-Zn-Mg that are are alloy.
Use alloy 33B, the 34B shown in the table 19 as the embodiment alloy, use alloy 35B～38B alloy as a comparative example.
[table 19]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 33B～38B, make the ingot casting of thickness of slab 500mm.
Then, handle described ingot casting with heat treatment step.That is, kept described ingot casting 4 hours with 300 ℃.
Then, make section material and hot rolling material by the ingot casting after the thermal treatment.The section material is handled described ingot casting with slicing process and is obtained.Hot rolling material obtains with hot rolling ingot.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
With 470 ℃ section material and the hot rolling material that obtains carried out solution treatment again, carry out 48 hours ageing treatment with 120 ℃ again.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 8th manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 33B, 34B to work as in the 8th bright embodiment.
Next, make a strength test and the alumite evaluation test for section material after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 250N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 250N/mm
2The time defective (*).
Test-results is presented in the table 20.
[table 20]
(about the section material)
Shown in table 20, under the situation of alloy 35B, 37B, respectively because the content of Mg, Zn is lower than lower value, so undercapacity.Under the situation of alloy 36B, 38B, respectively because the content of Mg, Zn surpasses higher limit, so the outward appearance on the surface after the alumite produces inequality.Under the situation of alloy 33B～38B, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
Shown in table 20, under the situation of alloy 35B, 37B, respectively because the content of Mg, Zn is lower than lower value, so undercapacity.Under the situation of alloy 36B, 38B, respectively because the content of Mg, Zn surpasses higher limit, so the outward appearance on the surface after the alumite produces inequality.Under the situation of alloy 33B～38B, the outward appearance in the cross section after the alumite produces uneven.
(11) the 11 embodiment
Present embodiment relates to the 9th invention.The aluminium alloy that uses in the present embodiment is that 5000 Bl-Mg that are are alloy.
Use the alloy 1C～12C shown in the table 21 as the embodiment alloy, use alloy 13C～22C alloy as a comparative example.
[table 21]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 1C～22C, make the ingot casting of thickness of slab 500mm.
Then, make section material and hot rolling material by described ingot casting.The section material is handled described ingot casting with slicing process and is obtained.Hot rolling material is the described ingot casting of hot rolling and obtaining.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, kept described section material 4 hours with 350 ℃.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 9th manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 1C～22C to work as in the 9th inventive embodiment.
Next, carry out flatness evaluation test, thickness of slab precision evaluation test, strength trial and alumite evaluation test for section material after the described processing and hot rolling material.The method of each test is identical with the situation of first embodiment with judgement criteria.
Also have, because the crystal grain diameter of slab is influential to alumite, so similarly try to achieve the average crystal grain diameter of slab with the situation of first embodiment.
Test-results is presented in table 22 and the table 23.
[table 22]
Show test-results in the table 22 about the section material.In table 22, alloy 1C～12C is equivalent to the 9th inventive embodiment, and alloy 13C～22C is equivalent to comparative example.Table 23 shows the test-results about hot rolling material.In table 23, alloy 1C～22C all is equivalent to comparative example.
(about the section material)
Shown in table 22, under the situation of alloy 1C～13C, 15C～22C, processing should tail off, and warpage is little.That is, Flatness is good.The thickness of slab precision is also excellent in addition.
Under the situation of alloy 14C,,, cannot make so casting crack takes place because the content of Mg surpasses higher limit.Under the situation of alloy 13C, because the content of Mg is lower than lower value, so undercapacity.
Under the situation of alloy 1C～13C, 17C, 20C～22C, inequality does not take place in the outward appearance on the surface after the alumite.Under the situation of alloy 15C, 16C, 18C, 19C, respectively because the content of Si, Fe, Mn, Cr surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 1C～13C, 15C～22C, the outward appearance in the cross section after the alumite does not produce inequality.
Also have, under the situation of alloy 17C, 20C, 21C, 22C, respectively because the content of Cu, Zn, Ti, Zr surpasses higher limit, so saturated based on their effect, less economical.
(about hot rolling material)
Shown in table 23, under the situation of alloy 1C～13C, 15C～22C, the processing strain is accumulated, and the warpage of rolling direction is big.Be that Flatness is bad.The thickness of slab precision is compared with the section material in addition, and is poor slightly mostly.
Under the situation of alloy 14C,,, cannot make so casting crack takes place because the content of Mg surpasses higher limit.Under the situation of alloy 13C, because the content of Mg is lower than lower value, so undercapacity.
Under the situation of alloy 15C, 16C, 18C, 19C, respectively because the content of Si, Fe, Mn, Cr surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 1C～13C, 15C～22C, the outward appearance in the cross section after the alumite produces uneven.
(12) the 12 embodiment
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 3C, make the ingot casting of thickness of slab 500mm.
Then, handle described ingot casting and obtain the material of cutting into slices with slicing process.The section material is the aluminium alloy thick plate of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, described section material is heat-treated with the condition shown in the table 24.
[table 24]
Therefore, C1 and C2 that heat-treat condition satisfies the 9th invention are equivalent to the 9th inventive embodiment, and C3～C5 that heat-treat condition does not satisfy the 9th invention is equivalent to comparative example.
For the section material after the aforementioned processing, carry out flatness evaluation test, thickness of slab precision evaluation test and machinability evaluation test.
(flatness evaluation test)
Flatness is estimated, and it is an amount of warpage (Flatness) of measuring the every 1m of casting direction.Flatness is that the following situation of 0.4mm/1m length is qualified (zero), and the situation that surpasses 0.4mm/1m length is defective (*).
(thickness of slab precision evaluation test)
Identical about thickness of slab precision evaluation test with the situation of first embodiment.
(machinability evaluation test)
About the machinability evaluation test, identical with the situation of the 7th embodiment.
Test-results is presented in the table 24.
Shown in table 24, Embodiment C 1, C2 are because heat-treat condition satisfies the 9th invention, so Flatness, thickness of slab precision and machinability are good.Comparative example C3 is not because heat-treat, so Flatness is bad, it is poor slightly that the thickness of slab precision is compared with Embodiment C 1, C2.Comparative example C4 because treatment temp than the 9th scope of invention height, so machinability is poor.Comparative example C5 is because treatment temp is lower than the 9th scope of invention, so Flatness is bad, it is poor slightly that the thickness of slab precision is compared with Embodiment C 1, C2.
(13) the 13 embodiment
Present embodiment relates to the tenth invention.The aluminium alloy that uses in the present embodiment is that 3000 Al-Mn that are are alloy.
Use alloy 23C, the 24C shown in the table 25 as the embodiment alloy, use alloy 25C, 26C alloy as a comparative example.
[table 25]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 23C～26C, make the ingot casting of thickness of slab 500mm.
Then, make section material and hot rolling material by described ingot casting.The section material is handled ingot casting with slicing process and is obtained.Hot rolling material is by obtaining behind the described ingot casting of hot rolling after the thermal treatment.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, kept described section material 4 hours with 350 ℃.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the tenth manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 23C, 24C to work as in the tenth inventive embodiment.
Then, carry out flatness evaluation test, thickness of slab precision evaluation test, strength trial and alumite evaluation test for section material after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 90N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 90N/mm
2The time defective (*).
Test-results is presented in the table 26.
[table 26]
(about the section material)
Shown in table 26, under the situation of alloy 23C～26C, processing should tail off, and warpage is little.That is, Flatness is good.The thickness of slab precision is also excellent in addition.
Under the situation of alloy 25C, because the content of Mn is lower than lower value, so undercapacity.Under the situation of alloy 26C, because the content of Mn surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 23C～26C, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
Shown in table 26, under the situation of alloy 23C～26C, the processing strain is accumulated, and the warpage of rolling direction is big.Be that Flatness is bad.The thickness of slab precision is compared with the section material in addition, and is poor slightly mostly.
Under the situation of alloy 25C, because the content of Mn is lower than lower value, so compare with other hot rolling materials, intensity is poor slightly.Under the situation of alloy 26C, because the content of Mn surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite takes place uneven.Under the situation of alloy 23C～26C, the outward appearance in the cross section after the alumite produces uneven.
(14) the 14 embodiment
Present embodiment relates to the 11 invention.The aluminium alloy that uses in the present embodiment is that 6000 Al-Mg-Si that are are alloy.
Use alloy 27C, the 28C shown in the table 27 as the embodiment alloy, use alloy 29C～32C alloy as a comparative example.
[table 27]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 27C～32C, make the ingot casting of thickness of slab 500mm.
Then, make section material and hot rolling material by described ingot casting.The section material is handled described ingot casting with slicing process and is obtained.Hot rolling material is the described ingot casting of hot rolling and obtaining after thermal treatment.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, kept described ingot casting 4 hours with 350 ℃.
With 520 ℃ section material and the hot rolling material that obtains carried out solution treatment again, carry out 8 hours ageing treatment with 175 ℃ again.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 11 manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 27C, 28C to work as in the 11 inventive embodiment.
Then, make a strength test and the alumite evaluation test for section after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 200N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 200N/mm
2The time defective (*).
Test-results is presented in the table 28.
[table 28]
(about the section material)
Shown in table 28, under the situation of alloy 29C, 31C, respectively because the content of Si, Mg is lower than lower value, so undercapacity.Under the situation of alloy 30C, because the content of Si surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite produces uneven.Under the situation of alloy 32C, because the content of Mg surpasses higher limit, so saturated based on the effect of Mg, less economical.Under the situation of alloy 27C～32C, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
Shown in table 28, under the situation of alloy 29C, 31C, respectively because the content of Si, Mg is lower than lower value, so undercapacity.Under the situation of alloy 30C, because the content of Si surpasses higher limit, so thick intermetallic deposits yields, the outward appearance on the surface after the alumite produces uneven.Under the situation of alloy 32C, because the content of Mg surpasses higher limit, so saturated based on the effect of Mg, less economical.Under the situation of alloy 27C～32C, the outward appearance in the cross section after the alumite produces uneven.
(15) the 15 embodiment
Present embodiment relates to the 12 invention.The aluminium alloy that uses in the present embodiment is that 7000 Al-Zn-Mg that are are alloy.
Use alloy 33C, the 34C shown in the table 29 as the embodiment alloy, use alloy 35C～38C alloy as a comparative example.
[table 29]
(processing)
At first, with fusion operation, dehydrogenation gas operation, filtration operation and casting process processed in sequence alloy 33C～38C, make the ingot casting of thickness of slab 500mm.
Then, make section material and hot rolling material by described ingot casting.The section material is handled described ingot casting with slicing process and is obtained.Hot rolling is the described ingot casting of hot rolling and obtaining after thermal treatment.Section material and hot rolling material are respectively the aluminium alloy thick plates of thick 20mm * wide 1000mm * long 2000mm.
Then, handle described section material with heat treatment step.That is, kept described section material 4 hours with 300 ℃.
With 470 ℃ section material and the hot rolling material that obtains carried out solution treatment again, carry out 48 hours ageing treatment with 120 ℃ again.
Therefore, the section material after the described processing is the aluminium alloy thick plate that obtains according to the 12 manufacture method of inventing, but the hot rolling material after the described processing is really not so.So, have only the section material that uses alloy 33C, 34C to work as in the 12 bright embodiment.
Next, make a strength test and the alumite evaluation test for section material after the described processing and hot rolling material.
The method of each test is identical with the situation of first embodiment with judgement criteria.
But according to alloy species, the characteristic of slab can be different, so the judgement criteria of intensity is as follows.That is, intensity is 250N/mm in tensile strength
2Qualified when above (zero), tensile strength is lower than 250N/mm
2The time defective (*).
Test-results is presented in the table 30.
[table 30]
(about the section material)
Shown in table 30, under the situation of alloy 35C, 37C, respectively because the content of Mg, Zn is lower than lower value, so undercapacity.Under the situation of alloy 36C, 38C, respectively because the content of Mg, Zn surpasses higher limit, so the outward appearance on the surface after the alumite produces inequality.Under the situation of alloy 33C～38C, the outward appearance in the cross section after the alumite does not produce inequality.
(about hot rolling material)
Shown in table 30, under the situation of alloy 35C, 37C, respectively because the content of Mg, Zn is lower than lower value, so undercapacity.Under the situation of alloy 36C, 38C, respectively because the content of Mg, Zn surpasses higher limit, so the outward appearance on the surface after the alumite produces inequality.Under the situation of alloy 33C～38C, the outward appearance in the cross section after the alumite produces uneven.
Utilize possibility on the industry
The manufacture method of the aluminium alloy thick plate of the present application has excellent productivity, and easily control surface state and flatness can improve the thickness of slab precision, so the value on the industry is big.
Claims (22)
1. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 12.0 quality % of Mg:1.5 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.6 quality % is following, Mn:1.0 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness;
The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than fusing point more than 400 ℃.
2. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Mn:0.3 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.5 quality % is following, Mg:1.5 quality % is following, Cr:0.3 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness;
The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than fusing point more than 400 ℃.
3. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains that the above 1.6 quality % of Si:0.2 quality % are following, below the above 1.5 quality % of Mg:0.3 quality %, and contain that Fe:0.8 quality % is following, Cu:1.0 quality % following, Mn:0.6 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness;
The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than fusing point more than 400 ℃.
4. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains that the above 4.0 quality % of Mg:0.4 quality % are following, below the above 9.0 quality % of Zn:3.0 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:3.0 quality % is following, Mn:0.8 quality % is following, Cr:0.5 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.25 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness;
The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than fusing point more than 350 ℃.
5. according to the manufacture method of each described aluminium alloy thick plate in the claim 1～4, it is characterized in that, after described heat treatment step, carry out the surface of aluminium alloy thick plate is implemented the surface smoothing treatment process of surface smoothing processing.
6. the manufacture method of aluminium alloy thick plate according to claim 5 is characterized in that, described surface smoothing processing uses the method for selecting from cutting system, filing and polishing more than a kind to carry out.
7. according to the manufacture method of each described aluminium alloy thick plate in the claim 1～4, it is characterized in that, in described slicing process, remove the thickness direction middle body from described ingot casting, this thickness direction middle body has impartial thickness from thickness direction central authorities towards each surface of thickness direction, and when the thickness of establishing described ingot casting is T, has the thickness that adds up to T/30～T/5.
8. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 12.0 quality % of Mg:1.5 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.6 quality % is following, Mn:1.0 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than 400 ℃ more than 200 ℃;
To make the slicing process of the aluminium alloy thick plate of specific thickness through heat treated ingot casting section.
9. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Mn:0.3 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.5 quality % is following, Mg:1.5 quality % is following, Cr:0.3 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than 400 ℃ more than 200 ℃;
To make the slicing process of the aluminium alloy thick plate of specific thickness through heat treated ingot casting section.
10. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains that the above 1.6 quality % of Si:0.2 quality % are following, below the above 1.5 quality % of Mg:0.3 quality %, and contain that Fe:0.8 quality % is following, Cu:1.0 quality % following, Mn:0.6 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than 400 ℃ more than 200 ℃;
To make the slicing process of the aluminium alloy thick plate of specific thickness through heat treated ingot casting section.
11. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains that the above 4.0 quality % of Mg:0.4 quality % are following, below the above 9.0 quality % of Zn:3.0 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:3.0 quality % is following, Mn:0.8 quality % is following, Cr:0.5 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.25 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than 350 ℃ more than 200 ℃;
To make the slicing process of the aluminium alloy thick plate of specific thickness through heat treated ingot casting section.
12. the manufacture method of each described aluminium alloy thick plate is characterized in that according to Claim 8～11, after described slicing process, carries out the surface of the aluminium alloy thick plate of specific thickness is implemented the surface smoothing treatment process of surface smoothing processing.
13. the manufacture method according to the described aluminium alloy thick plate of claim 12 is characterized in that, described surface smoothing processing uses the method for selecting from cutting system, filing and polishing more than a kind to carry out.
14. the manufacture method of each described aluminium alloy thick plate according to Claim 8～11, it is characterized in that, in described slicing process, remove the thickness direction middle body from described ingot casting, this thickness direction middle body has impartial thickness from thickness direction central authorities towards each surface of thickness direction, and when the thickness of establishing described ingot casting is T, has the thickness that adds up to T/30～T/5.
15. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 12.0 quality % of Mg:1.5 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.6 quality % is following, Mn:1.0 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness;
The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than 400 ℃ more than 200 ℃.
16. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains below the above 1.6 quality % of Mn:0.3 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:0.5 quality % is following, Mg:1.5 quality % is following, Cr:0.3 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness;
The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than 400 ℃ more than 200 ℃.
17. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains that the above 1.6 quality % of Si:0.2 quality % are following, below the above 1.5 quality % of Mg:0.3 quality %, and contain that Fe:0.8 quality % is following, Cu:1.0 quality % following, Mn:0.6 quality % is following, Cr:0.5 quality % is following, Zn:0.4 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.3 quality % among following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness;
The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than 400 ℃ more than 200 ℃.
18. the manufacture method of an aluminium alloy thick plate is a method of making aluminium alloy thick plate with aluminium alloy, it is characterized in that, carries out following operation in order:
The fusion operation of fusion aluminium alloy, described aluminium alloy contains that the above 4.0 quality % of Mg:0.4 quality % are following, below the above 9.0 quality % of Zn:3.0 quality %, and contain that Si:0.7 quality % is following, Fe:0.8 quality % following, Cu:3.0 quality % is following, Mn:0.8 quality % is following, Cr:0.5 quality % is following, Ti:0.1 quality % is following, at least a kind element of Zr:0.25 quality % in following, and surplus is Al and inevitable impurity;
The dehydrogenation gas operation of from the aluminium alloy after the fusion, removing hydrogen;
Remove the filtration operation of inclusion the aluminium alloy after removing hydrogen;
Cast the casting process that has been removed the aluminium alloy of inclusion and has made ingot casting;
Described ingot casting section is made the slicing process of the aluminium alloy thick plate of specific thickness;
The aluminium alloy thick plate of described specific thickness is kept more than 1 hour the heat treatment step of heat-treating thus in the temperature that is lower than 350 ℃ more than 200 ℃.
19. the manufacture method according to each described aluminium alloy thick plate in the claim 15～18 is characterized in that, after described heat treatment step, carries out the surface of aluminium alloy thick plate is implemented the surface smoothing treatment process of surface smoothing processing.
20. the manufacture method according to the described aluminium alloy thick plate of claim 19 is characterized in that, described surface smoothing processing uses the method for selecting from cutting system, filing and polishing more than a kind to carry out.
21. manufacture method according to each described aluminium alloy thick plate in the claim 15～18, it is characterized in that, in described slicing process, remove the thickness direction middle body from described ingot casting, this thickness direction middle body has impartial thickness from thickness direction central authorities towards each surface of thickness direction, and when the thickness of establishing described ingot casting is T, has the thickness that adds up to T/30～T/5.
22. an aluminium alloy thick plate is characterized in that, according to the manufacture method manufacturing of each the described aluminium alloy thick plate in claim 1～4, claim 8～11 and the claim 15～18, has the following average crystal grain diameter of 400 μ m.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP095419/2007 | 2007-03-30 | ||
| JP2007095419A JP4231529B2 (en) | 2007-03-30 | 2007-03-30 | Aluminum alloy plate manufacturing method and aluminum alloy plate |
| JP2007095423A JP4231530B2 (en) | 2007-03-30 | 2007-03-30 | Aluminum alloy plate manufacturing method and aluminum alloy plate |
| JP095423/2007 | 2007-03-30 | ||
| JP098495/2007 | 2007-04-04 | ||
| JP2007098495A JP4242429B2 (en) | 2007-04-04 | 2007-04-04 | Aluminum alloy plate manufacturing method and aluminum alloy plate |
| PCT/JP2008/055873 WO2008123355A1 (en) | 2007-03-30 | 2008-03-27 | Method for producing aluminum alloy thick plate and aluminum alloy thick plate |
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| CN101605916A CN101605916A (en) | 2009-12-16 |
| CN101605916B true CN101605916B (en) | 2010-12-01 |
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| CN102002616B (en) * | 2010-12-08 | 2012-12-26 | 西南铝业（集团）有限责任公司 | Hydrogen-containing 7050 aluminum alloy standard sample and preparation method thereof |
| CN102634701B (en) * | 2012-03-13 | 2014-01-01 | 浙江永杰铝业有限公司 | Production method of high-magnesium aluminum alloy sheet for ship |
| KR101246106B1 (en) * | 2012-06-13 | 2013-03-20 | 주식회사 대호에이엘 | Aluminium alloy plate for automobile interor/exterior materials and its manufacturing method |
| FR2996857B1 (en) * | 2012-10-17 | 2015-02-27 | Constellium France | ELEMENTS OF ALUMINUM ALLOY VACUUM CHAMBERS |
| JP6010454B2 (en) * | 2012-12-27 | 2016-10-19 | 住友電気工業株式会社 | Aluminum alloy wire |
| CN104526280A (en) * | 2014-12-15 | 2015-04-22 | 西南铝业（集团）有限责任公司 | Preparation method of aluminum alloy brazing sheet |
| CN106011563A (en) * | 2016-05-23 | 2016-10-12 | 济南大学 | Hypo eutectic aluminum-magnesium alloy reinforcing method through melt compounding treatment |
| CN111411271A (en) * | 2020-05-07 | 2020-07-14 | 南京至美畅和科技会展股份有限公司 | High-strength aluminum alloy material for exhibition shelf |
| CN112322920B (en) * | 2020-11-17 | 2022-02-11 | 四川阳光坚端铝业有限公司 | Aluminum alloy casting production method |
| CN115927983A (en) * | 2022-12-23 | 2023-04-07 | 苏州宇上实业有限公司 | Preparation method of 6 series aluminum alloy plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1271393A (en) * | 1997-09-22 | 2000-10-25 | 戴姆勒-克莱斯勒股份公司 | Aluminium based alloy and method for subjecting it to heat treatment |
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| CN1271393A (en) * | 1997-09-22 | 2000-10-25 | 戴姆勒-克莱斯勒股份公司 | Aluminium based alloy and method for subjecting it to heat treatment |
Non-Patent Citations (2)
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| JP特开2000-265232A 2000.09.26 |
| JP特开2004-306139A 2004.11.04 |
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| JP2008255371A (en) | 2008-10-23 |
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