CN112746204A - Aluminum alloy plate and preparation method thereof - Google Patents
Aluminum alloy plate and preparation method thereof Download PDFInfo
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- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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Abstract
The invention discloses an aluminum alloy plate and a preparation method thereof, wherein the aluminum alloy plate comprises the following components, by mass, less than or equal to 0.40% of Si, less than or equal to 0.40% of Fe, less than or equal to 0.10% of Cu, 4.1-4.4% of Mg, 0.45-0.65% of Mn, 0.05-0.25% of Cr0.05, less than or equal to 0.25% of Zn, less than or equal to 0.15% of Ti, and the balance of Al; the casting process adopts a semi-continuous casting method to prepare the cast ingot, and the preparation method mainly comprises casting, hot rolling, cold rolling and finishing. Compared with the prior art, the finished plate prepared by the method has excellent comprehensive mechanical properties, the tensile strength can reach 300-320 MPa, the elongation can reach 28%, the high strength can meet the requirements of processing punch forming, and the punching has no wrinkling, warping and cracking phenomena; the aluminum alloy plate can be applied to aluminum alloy doors, and the problems of poor corrosion resistance and poor processing and forming performance of the traditional material are solved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of preparation of aluminum and aluminum alloy strips, in particular to a preparation method of an aluminum alloy plate.
[ background of the invention ]
With the progress of science and technology, the aluminum alloy has the outstanding advantages of light weight, high strength, corrosion resistance, attractive appearance and the like, so that the aluminum alloy material gradually replaces the traditional steel material and becomes a new favorite in the fields of new energy, transportation, aerospace industry and the like.
In the preparation method of the aluminum alloy plate in the related art, the steps of smelting, casting, homogenizing, rolling, annealing and the like are generally included, but the control of the content of alkali metal in the casting process and the refining process during smelting is not accurate enough, so that the internal structure of an ingot has defects, and the rolling hot cracking tendency is increased. The ingot casting homogenization system, the hot rolling and cold rolling process parameters, the heat treatment temperature, the heat preservation time and other process designs are unreasonable, so the aluminum alloy material has the problems of lower plastic strain ratio r value, reduced deep drawing stamping performance, poor plate shape, easy buckling deformation of a stamped part, non-fine aluminum plate surface and the like.
Therefore, there is a need to provide a new method for preparing aluminum alloy sheet material to solve the above problems.
[ summary of the invention ]
The invention aims to provide an aluminum alloy plate with excellent corrosion resistance and high tensile strength and a preparation method thereof.
In order to achieve the above object, the present invention provides a method for preparing an aluminum alloy sheet, comprising the steps of:
step S1, the components and the mass percentage are as follows: less than or equal to 0.40 percent of Si, less than or equal to 0.40 percent of Fe, less than or equal to 0.10 percent of Cu, 4.1 to 4.4 percent of Mg, 0.45 to 0.65 percent of Mn, 0.05 to 0.25 percent of Cr, less than or equal to 0.25 percent of Zn, less than or equal to 0.15 percent of Ti, and the balance of Al; the casting process adopts a semi-continuous casting method to prepare the cast ingot, and specifically comprises the following steps:
s11, selecting an aluminum ingot with the contents of Si, Fe, Cu, Zn and Al meeting the mass percentage as a melt, smelting the aluminum ingot into aluminum liquid, adding Mn, Mg and Cr according to the mass percentage after the temperature of the molten aluminum does not exceed 750 ℃ and the temperature of the melt reaches 730-750 ℃, and simultaneously doping 120-150ppm of Be element;
step S12, performing electromagnetic stirring on the aluminum liquid to make the chemical components of the aluminum liquid uniform, and then using a slag removing vehicle to remove slag;
step S13, transferring the aluminum liquid into a heat preservation furnace for refining, wherein chlorine is used for refining for 30-40 minutes for the first time, and argon is used for refining for 10-15 minutes for the second time;
step S14, slagging off again after refining is completed, and standing for 30-40 minutes;
s15, after standing, sequentially degassing the aluminum liquid through a degassing box, wherein the hydrogen content in the degassing box is less than 0.18mL/100gAl, and in the whole degassing process of the degassing box, adding titanium wire AlTi5B1A in an online manner according to the mass percent of the Ti element for grain refinement; secondly, passing through a filter box, wherein the filter box adopts a 60PPi ceramic filter plate for single-stage filtration; finally, casting the molten aluminum through a crystallizer to obtain the ingot, wherein the casting speed is 40-48 mm/min, and the flow rate of casting cooling water is 150-200L/min;
step S2, preparing the cast ingot into a hot-rolled blank with the thickness of 4.0mm by adopting a hot-rolling procedure:
step S21, milling the cast ingot, milling each 15mm large surface, and milling the cold shut;
step S22, carrying out homogenization treatment on the cast ingot after surface milling, determining the homogenization process temperature to be 530 +/-5 ℃, preserving heat for 20 hours, then rotating to be 495 +/-5 ℃, and preserving heat for 5 hours, wherein the homogenization treatment is a two-stage homogenization system; after homogenization treatment, continuously preserving heat for 2 hours and then discharging from the furnace for rolling, wherein the ingot casting temperature is 465 +/-5 ℃ in the period of 2 hours of heat preservation;
step S23, rolling the ingot after the homogenization treatment by a hot continuous rolling mill, wherein the hot rolling and the rough rolling are carried out for 29 times, the thickness of the intermediate blank after the rough rolling is 22mm, and then carrying out the finish rolling on the ingot by a 3-stand rolling machine to obtain a hot rolled blank with the thickness of 4.0mm, wherein the finish rolling temperature is 350-360 ℃, and oil-in-water emulsion is added in the rolling process for lubrication and cooling;
step S3, cold rolling the hot rolled blank to obtain an aluminum alloy finished product aluminum coil with the thickness of 0.6 mm:
step S31, cold rolling the hot rolled blank, and finally obtaining an aluminum coiled strip with the thickness of 0.6mm through 5-pass rolling, wherein the rolling speed is kept at 400-600 m/min, and lubricating rolling oil is used in the cold rolling process;
step S32, washing the aluminum coiled strip with alkali liquor in sequence to remove rolling oil, aluminum powder and iron powder falling off from the roller;
step S33, carrying out complete recrystallization annealing treatment on the cleaned aluminum coil strip to obtain the aluminum alloy finished product aluminum coil with the thickness of 0.6mm, wherein the annealing process is protected by inert gas, the oxygen content in the furnace is less than or equal to 500ppm, the annealing temperature is 400 +/-5 ℃, and the temperature is kept for 4-6 h;
s4, stretch-bending and straightening the aluminum coil of the aluminum alloy finished product, and then crosscutting and shearing the aluminum coil to obtain the aluminum alloy plate with the thickness of 0.6 mm.
Preferably, in step S11, Mg ingots are used for preparing Mg elements, and master alloys are used for Mn, Cr, and Be.
Preferably, the refining process of step S13 further includes alkali metals Na and Ca, and the content of the alkali metals Na and Ca is less than or equal to 0.5ppm respectively.
Preferably, in the step S15, the cast cooling water has a conductivity of 300 to 400US/cm and an oil content of less than 1 ppm.
Preferably, in the step S23, the hot rolled blank rolled by the finish rolling 3 stand to form 4.0mm is sequentially subjected to rolling passes of 22mm, 12mm, 6.5mm and 4.0 mm.
Preferably, in step S23, in step S23, the particle size distribution of the oil-in-water emulsion is 1.6 to 1.8 μm and the stability index is 0.6 to 0.7, and the oil-in-water emulsion mainly comprises deionized water, base oil and an auxiliary functional additive, wherein the deionized water accounts for about 90 to 97%, the base oil accounts for about 3 to 9%, and the balance is the auxiliary functional additive.
Preferably, in the step S31, in the step S31, the aluminum strip having a final thickness of 0.6mm is subjected to rolling passes of 4.0mm, 2.5mm, 1.6mm, 1.1mm, 0.8mm and 0.6mm in sequence; the viscosity index of the lubricating rolling oil is 2.48-2.56 centistokes.
Preferably, in the cold rolling process, after each pass of rolling is finished, the next pass of rolling is performed when the temperature of the aluminum strip is reduced to 50-60 ℃.
Preferably, the aluminum alloy sheet is produced by the method for producing an aluminum alloy sheet according to any one of claims 1 to 8, and the aluminum alloy sheet is used for aluminum alloy doors.
Compared with the prior art, the preparation method of the aluminum alloy plate has the advantages that the surface quality of the strip is excellent and the color is good through the addition of the Be element and the innovation of the index of the lubricating emulsion of the hot rolling process; the content of alkali metals Na and Ca is controlled by a refining process, so that the melt is pure and has excellent corrosion resistance; the casting process parameters are matched, the index of casting cooling water is controlled, the homogenization process, the design finishing temperature and the cold rolling process are adopted, so that the aluminum alloy plate has excellent comprehensive mechanical properties, the tensile strength can reach 300-320 MPa, the elongation can reach 28%, the plastic strain ratio r value can reach more than 0.8, and the aluminum alloy plate has high strength and simultaneously meets the requirements of processing and stamping formability.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a flow chart of a method for preparing an aluminum alloy sheet according to the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a method for preparing an aluminum alloy plate, which specifically includes the following steps:
step S1, the components and the mass percentage are as follows: less than or equal to 0.40 percent of Si, less than or equal to 0.40 percent of Fe, less than or equal to 0.10 percent of Cu, 4.1 to 4.4 percent of Mg, 0.45 to 0.65 percent of Mn, 0.05 to 0.25 percent of Cr, less than or equal to 0.25 percent of Zn, less than or equal to 0.15 percent of Ti, and the balance of Al; the casting process adopts a semi-continuous casting method to prepare the cast ingot, and specifically comprises the following steps:
and S11, selecting an aluminum ingot with the contents of Si, Fe, Cu, Zn and Al meeting the mass percentage as a melt, smelting the aluminum ingot into aluminum liquid, adding Mn, Mg and Cr and doping Be elements according to the mass percentage after the temperature of the molten aluminum does not exceed 750 ℃ and the temperature of the melt reaches 730-750 ℃.
Specifically, Mg ingot is used as the preparation element Mg, and intermediate alloy is used for Mn, Cr and Be. In the embodiment, the added amount of the element Be is 120-150ppm by mass, and because MgO which is an oxide formed by the high-Mg alloy is loose, the phenomena of poor quality of the melt, such as slag inclusion of the melt, high hydrogen content and the like, can Be easily caused, and the added element Be can reduce the punching cracking tendency of the invention, thereby reducing the problems of oxidation yellowing of the surface of the plate and uneven color of the surface.
And step S12, performing electromagnetic stirring on the aluminum liquid to make the chemical components of the aluminum liquid uniform, and then using a slag removing vehicle to remove slag.
And step S13, transferring the molten aluminum into a heat preservation furnace for refining, and refining by adopting a gas combination refining method twice, wherein the first time is refined by using chlorine for 30-40 minutes, and the second time is refined by using argon for 10-15 minutes.
Specifically, the refining process also comprises alkali metals Na and Ca derived from an aluminum ingot, a refining agent and a covering agent, and the content of the alkali metals Na and Ca is controlled to ensure that the content of the alkali metals Na and Ca is respectively less than or equal to 0.5 ppm.
And step S14, slagging off again after refining is finished, and standing for 30-40 minutes.
S15, after standing, sequentially degassing the aluminum liquid through a degassing box, wherein the hydrogen content in the degassing box is less than 0.18mL/100gAl, and in the whole degassing process of the degassing box, adding titanium wire AlTi5B1A in an online manner according to the mass percent of the Ti element for grain refinement; secondly, passing through a filter box, wherein the filter box adopts a 60PPi ceramic filter plate for single-stage filtration; finally, casting the molten aluminum through a crystallizer to obtain the ingot, wherein the casting speed is 40-48 mm/min, and the flow rate of casting cooling water is 150-200L/min; the casting process parameters are matched, so that the obtained cast ingot original crystal grains and the internal structure are excellent, and the deep drawing performance of the plate is improved.
Specifically, the conductivity value of the casting cooling water is 300-400 US/cm, the oil content is less than 1ppm, the cast ingot obtained by controlling the parameters is flat and smooth in surface, the cooling capacity of the cooling water is guaranteed, the crystal grains of the cast ingot are not easy to grow, and the deep drawing performance of the plate is improved.
Step S2, preparing the cast ingot into a hot-rolled blank with the thickness of 4.0mm by adopting a hot-rolling procedure:
and step S21, milling the cast ingot, milling each 15mm large surface, and milling the cold shut.
Step S22, carrying out homogenization treatment on the cast ingot after surface milling, determining the homogenization process temperature to be 530 +/-5 ℃, preserving heat for 20 hours, then rotating to be 495 +/-5 ℃, and preserving heat for 5 hours, wherein the homogenization treatment is a two-stage homogenization system; keeping the temperature for 2 hours after the homogenization treatment, and then discharging and rolling, wherein the ingot casting temperature is 465 +/-5 ℃ in the period of 2 hours of heat preservation.
In the embodiment, a bipolar homogenization process system determined by a differential thermal analysis means is adopted to eliminate intragranular segregation and improve chemical components and structural nonuniformity of an ingot, so that dispersed phases are uniformly distributed in a matrix, the bipolar homogenization process system is favorable for eliminating anisotropy of an aluminum alloy plate and improving plastic strain ratio, and the plate is flat and does not warp and deform after being punched.
And S23, rolling the ingot after the homogenization treatment by a hot continuous rolling mill, wherein the hot continuous rolling mill is a 1+3 hot continuous rolling mill. The hot rolling and rough rolling are carried out for 29 passes, the thickness of the intermediate blank after rough rolling is 22mm, then the finish rolling is carried out by a 3-stand rolling machine to obtain a hot rolling blank with the thickness of 4.0mm, wherein the finish rolling temperature is 350-360 ℃, and specifically, the hot rolling blank with the thickness of 4.0mm formed by the 3-stand rolling machine in the finish rolling process needs to be sequentially subjected to 22mm, 12mm, 6.5mm and 4.0mm rolling passes. The higher finish rolling temperature design enables the hot rolled blank to be completely recrystallized, is beneficial to the stamping performance of the finished plate and can also save the process of intermediate annealing of the hot rolled blank.
In the embodiment, an oil-in-water emulsion is added for lubrication and cooling in the hot rolling process, the Particle Size Distribution (PSD) of the emulsion is 1.6-1.8 μm, the stability index is 0.6-0.7, and the oil-in-water emulsion mainly comprises deionized water, base oil and an auxiliary functional additive, wherein the deionized water accounts for about 90-97%, the base oil accounts for about 3-9%, and the balance is the auxiliary functional additive. The index meets the lubrication requirement of the plate, and is beneficial to producing the aluminum alloy plate with a fine surface.
Specifically, when the oil-in-water emulsion is in contact with a roller and a high-temperature aluminum plate surface through the shearing action of the nozzle, oil and water are separated, and the oil-in-water emulsion has good lubricating and cooling effects, so that the aluminum surface is fine and smooth and does not stick to aluminum.
Step S3, cold rolling the hot rolled blank to obtain an aluminum alloy finished product aluminum coil with the thickness of 0.6 mm:
and S31, cold rolling the hot rolled blank, and finally obtaining an aluminum coiled strip with the thickness of 0.6mm through 5-pass rolling, wherein the rolling speed is kept at 400-600 m/min, lubricating rolling oil is used in the cold rolling process, and the viscosity index of the lubricating rolling oil is 2.48-2.56 centistokes. The index meets the requirement of cold working lubrication, and the surface of the aluminum coil strip is uniform.
Specifically, the aluminum coiled strip with the final thickness of 0.6mm is formed by sequentially passing the aluminum coiled strip through 4.0mm, 2.5mm, 1.6mm, 1.1mm, 0.8mm and 0.6mm, and rolling the aluminum coiled strip for the next time after the temperature of the aluminum coiled strip is reduced to 50-60 ℃ after each pass of rolling is completed. Compared with the traditional process, the process meets the condition of relative balance between rolling deformation resistance and stress, can ensure that the plate shape is controlled to be less than or equal to 5I, can greatly reduce the subsequent plate shape straightening internal stress, and is favorable for preventing the plate from warping and deforming during punching.
Step S32, washing the aluminum coiled strip with alkali liquor in sequence to remove rolling oil, aluminum powder and iron powder falling off from the roller; the cleaned aluminum alloy finished product aluminum coil surface can not generate serious surface quality problems such as indentation, scratch and the like on the surface due to foreign matters during punching.
Step S33, carrying out complete recrystallization annealing treatment on the cleaned aluminum coil strip to obtain the aluminum alloy finished product aluminum coil with the thickness of 0.6mm, wherein the annealing process is protected by inert gas, the oxygen content in the furnace is less than or equal to 500ppm, the annealing temperature is 400 +/-5 ℃, and the temperature is kept for 4-6 h; compared with the traditional annealing temperature of 320-340 ℃, the method can ensure the complete recrystallization of the high-magnesium alloy, has high elongation and excellent deep-drawing performance, and ensures the surface gloss and no yellowing under the protection of inert gas.
S4, stretch-bending and straightening the aluminum coil of the aluminum alloy finished product, and then crosscutting and shearing the aluminum coil to obtain the aluminum alloy plate with the thickness of 0.6 mm.
In this embodiment, the aluminum alloy plate prepared by the preparation method of the aluminum alloy plate can be used as an aluminum alloy door after further stamping. Experimental data show that the tensile strength of the aluminum alloy plate prepared by the preparation method can reach 300-320 MPa, the plastic strain ratio r value can reach more than 0.8, the plate shape unevenness of the aluminum alloy plate is less than or equal to 1mm, and the aluminum alloy plate is used as an aluminum alloy door, so that the problems of non-corrosion resistance, poor processing and forming performance and the like of the traditional door material are solved.
Specifically, the finished aluminum alloy plate prepared by the preparation method of the aluminum alloy plate has the thickness of 0.6mm, excellent comprehensive mechanical properties, the tensile strength of 313MPa, the elongation of 28 percent, the plastic strain ratio r value of 0.89 (which is far higher than the average level of 0.8 in the industry), excellent deep-drawing stamping performance, no wrinkling, buckling and cracking during stamping, excellent surface quality and the unevenness of the plate shape of the punched door plate is less than or equal to 0.4 mm.
Compared with the prior art, the preparation method of the aluminum alloy plate has the advantages that the surface quality of the strip is excellent and the color is good through the addition of the Be element and the innovation of the index of the lubricating emulsion of the hot rolling process; the content of alkali metals Na and Ca is controlled by a refining process, so that the melt is pure and has excellent corrosion resistance; the casting process parameters are matched, the index of casting cooling water is controlled, the homogenization process, the design finishing temperature and the cold rolling process are adopted, so that the aluminum alloy plate has excellent comprehensive mechanical properties, the tensile strength can reach 300-320 MPa, the elongation can reach 28%, the plastic strain ratio r value can reach more than 0.8, and the aluminum alloy plate has high strength and simultaneously meets the requirements of processing and stamping formability.
The present invention provides an embodiment of the present invention, which is not limited to the scope of the present invention, and all equivalent structures or equivalent flow transformations made by using the contents of the specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The preparation method of the aluminum alloy plate is characterized by comprising the following steps of:
step S1, the components and the mass percentage are as follows: less than or equal to 0.40 percent of Si, less than or equal to 0.40 percent of Fe, less than or equal to 0.10 percent of Cu, 4.1 to 4.4 percent of Mg, 0.45 to 0.65 percent of Mn, 0.05 to 0.25 percent of Cr, less than or equal to 0.25 percent of Zn, less than or equal to 0.15 percent of Ti, and the balance of Al; the casting process adopts a semi-continuous casting method to prepare the cast ingot, and specifically comprises the following steps:
s11, selecting an aluminum ingot with the contents of Si, Fe, Cu, Zn and Al meeting the mass percentage as a melt, smelting the aluminum ingot into aluminum liquid, adding Mn, Mg and Cr according to the mass percentage after the temperature of the molten aluminum does not exceed 750 ℃ and the temperature of the melt reaches 730-750 ℃, and simultaneously doping 120-150ppm of Be element;
step S12, performing electromagnetic stirring on the aluminum liquid to make the chemical components of the aluminum liquid uniform, and then using a slag removing vehicle to remove slag;
step S13, transferring the aluminum liquid into a heat preservation furnace for refining, wherein chlorine is used for refining for 30-40 minutes for the first time, and argon is used for refining for 10-15 minutes for the second time;
step S14, slagging off again after refining is completed, and standing for 30-40 minutes;
s15, after standing, sequentially degassing the aluminum liquid through a degassing box, wherein the hydrogen content in the degassing box is less than 0.18mL/100gAl, and in the whole degassing process of the degassing box, adding titanium wire AlTi5B1A in an online manner according to the mass percent of the Ti element for grain refinement; secondly, passing through a filter box, wherein the filter box adopts a 60PPi ceramic filter plate for single-stage filtration; finally, casting the molten aluminum through a crystallizer to obtain the ingot, wherein the casting speed is 40-48 mm/min, and the flow rate of casting cooling water is 150-200L/min;
step S2, preparing the cast ingot into a hot-rolled blank with the thickness of 4.0mm by adopting a hot-rolling procedure:
step S21, milling the cast ingot, milling each 15mm large surface, and milling the cold shut;
step S22, carrying out homogenization treatment on the cast ingot after surface milling, determining the homogenization process temperature to be 530 +/-5 ℃, preserving heat for 20 hours, then rotating to be 495 +/-5 ℃, and preserving heat for 5 hours, wherein the homogenization treatment is a two-stage homogenization system; after homogenization treatment, continuously preserving heat for 2 hours and then discharging from the furnace for rolling, wherein the ingot casting temperature is 465 +/-5 ℃ in the period of 2 hours of heat preservation;
step S23, rolling the ingot after the homogenization treatment by a hot continuous rolling mill, wherein the hot rolling and the rough rolling are carried out for 29 times, the thickness of the intermediate blank after the rough rolling is 22mm, and then carrying out the finish rolling on the ingot by a 3-stand rolling machine to obtain a hot rolled blank with the thickness of 4.0mm, wherein the finish rolling temperature is 350-360 ℃, and oil-in-water emulsion is added in the rolling process for lubrication and cooling;
step S3, cold rolling the hot rolled blank to obtain an aluminum alloy finished product aluminum coil with the thickness of 0.6 mm:
step S31, cold rolling the hot rolled blank, and finally obtaining an aluminum coiled strip with the thickness of 0.6mm through 5-pass rolling, wherein the rolling speed is kept at 400-600 m/min, and lubricating rolling oil is used in the cold rolling process;
step S32, washing the aluminum coiled strip with alkali liquor in sequence to remove rolling oil, aluminum powder and iron powder falling off from the roller;
step S33, carrying out complete recrystallization annealing treatment on the cleaned aluminum coil strip to obtain the aluminum alloy finished product aluminum coil with the thickness of 0.6mm, wherein the annealing process is protected by inert gas, the oxygen content in the furnace is less than or equal to 500ppm, the annealing temperature is 400 +/-5 ℃, and the temperature is kept for 4-6 h;
s4, stretch-bending and straightening the aluminum coil of the aluminum alloy finished product, and then crosscutting and shearing the aluminum coil to obtain the aluminum alloy plate with the thickness of 0.6 mm.
2. The method of claim 1, wherein in step S11, Mg ingot is used as Mg preparation element, and intermediate alloy is used for Mn, Cr and Be.
3. The method of manufacturing an aluminum alloy sheet according to claim 1, wherein the refining of step S13 further includes alkali metals Na and Ca, each of which is less than or equal to 0.5 ppm.
4. The method of manufacturing an aluminum alloy sheet according to claim 1, wherein in the step S15, the cast cooling water has a conductivity value of 300 to 400US/cm and an oil content of less than 1 ppm.
5. The method of manufacturing an aluminum alloy sheet as recited in claim 1, wherein in the step S23, the finish-rolling 3 stand rolling is performed to form the hot-rolled billet of 4.0mm in the order of 22mm, 12mm, 6.5mm, and 4.0 mm.
6. The method of claim 1, wherein in step S23, the oil-in-water emulsion has a particle size distribution of 1.6-1.8 μm and a stability index of 0.6-0.7, and is mainly composed of deionized water, base oil and auxiliary functional additive, wherein the deionized water is about 90-97%, the base oil is about 3-9%, and the balance is the auxiliary functional additive.
7. The method of manufacturing an aluminum alloy sheet according to claim 1, wherein in the step S31, the aluminum coiled strip with a final thickness of 0.6mm is formed by rolling passes of 4.0mm, 2.5mm, 1.6mm, 1.1mm, 0.8mm and 0.6 mm; the viscosity index of the lubricating rolling oil is 2.48-2.56 centistokes.
8. The method for preparing the aluminum alloy sheet material as claimed in claim 7, wherein in the cold rolling process, after the rolling of each pass is completed, the next rolling is carried out when the temperature of the aluminum coil strip is reduced to 50-60 ℃.
9. An aluminum alloy sheet produced by the method for producing an aluminum alloy sheet according to any one of claims 1 to 8, which is used for an aluminum alloy door.
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| CN113174500A (en) * | 2021-04-29 | 2021-07-27 | 郑州明泰实业有限公司 | Method for improving O-state bending performance of 5083 alloy |
| CN113305585A (en) * | 2021-06-07 | 2021-08-27 | 湖北欣洁顺幕墙材料有限公司 | Manufacturing process of aluminum alloy plate for environment-friendly curtain wall material |
| CN113477744A (en) * | 2021-06-29 | 2021-10-08 | 宜兴市鑫煜科技有限公司 | Deep drawing forming production process of slat sliding rail sleeve |
| CN114457264A (en) * | 2022-01-28 | 2022-05-10 | 邹平宏发铝业科技有限公司 | 5-series aluminum alloy strip for stamping lamp and processing method thereof |
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| CN116536550A (en) * | 2023-04-28 | 2023-08-04 | 浙江永杰铝业有限公司 | Aluminum alloy plate and preparation method thereof |
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| CN113174500A (en) * | 2021-04-29 | 2021-07-27 | 郑州明泰实业有限公司 | Method for improving O-state bending performance of 5083 alloy |
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| CN113477744A (en) * | 2021-06-29 | 2021-10-08 | 宜兴市鑫煜科技有限公司 | Deep drawing forming production process of slat sliding rail sleeve |
| CN113477744B (en) * | 2021-06-29 | 2023-02-10 | 宜兴市鑫煜科技有限公司 | Deep drawing forming production process of slat sliding rail sleeve |
| CN114457264A (en) * | 2022-01-28 | 2022-05-10 | 邹平宏发铝业科技有限公司 | 5-series aluminum alloy strip for stamping lamp and processing method thereof |
| CN114653904A (en) * | 2022-03-22 | 2022-06-24 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
| CN114653904B (en) * | 2022-03-22 | 2024-01-12 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
| CN115323141A (en) * | 2022-08-23 | 2022-11-11 | 浙江永杰铝业有限公司 | Preparation method of battery aluminum-coated plate and battery aluminum-coated plate |
| CN115323141B (en) * | 2022-08-23 | 2023-08-22 | 浙江永杰铝业有限公司 | Preparation method of battery pack aluminum plate and battery pack aluminum plate |
| CN115652152A (en) * | 2022-11-30 | 2023-01-31 | 中铝材料应用研究院有限公司 | 5XXX aluminum alloy capable of refining MIG welding line crystal grains and preparation method and application thereof |
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