CN101705394A - Aluminum alloy and process for processing aluminum alloy plate - Google Patents
Aluminum alloy and process for processing aluminum alloy plate Download PDFInfo
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- CN101705394A CN101705394A CN200910180807A CN200910180807A CN101705394A CN 101705394 A CN101705394 A CN 101705394A CN 200910180807 A CN200910180807 A CN 200910180807A CN 200910180807 A CN200910180807 A CN 200910180807A CN 101705394 A CN101705394 A CN 101705394A
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Abstract
The invention discloses an aluminum alloy plate and a process for processing the same. The aluminum alloy contains metallic iron and non-metallic silicon in a weight ratio of 1.0 to 1.5. The aluminum alloy also contains metallic copper, manganese, zinc, magnesium and titanium. The technique process comprises the steps of material mixing, casting rolling, cold rolling, foil rolling and annealing. In the casting rolling process, liquid aluminum alloy is cast and rolled directly into cast plate blank which has a thickness between 6.0mm and 10.0mm and is suitable for cold rolling through a twin continuous cast-rolling apparatus; in the cold rolling process, the cast plate blank is rolled into cold-rolled sheet with a thickness of 0.38mm; and in the foil rolling process, the cold-rolled sheet is rolled into thin plate with a thickness of 0.22mm. Through the preparation of the aluminum alloy raw materials and adoption of the process, the processed aluminum alloy plate has the characteristics of high tensile strength, good elongation, good Erichsen performance and the like.
Description
Technical field
The present invention relates to the manufacture field of aluminum alloy materials and aluminum alloy plate materials, be specifically related to the complete processing of a kind of aluminium alloy and Aluminium Alloy Plate.
Background technology
Aluminum alloy materials has conduction, thermal conductivity is good, good corrosion resistance, and ductility is good, is easy to processing, the advantage that price is relatively low.Aluminum alloy materials is widely used in machinery, electronics, electrical equipment, industries such as building.Interchanger in machinery, the electric equipment products all can select for use aluminum casting or aluminium sheet as thermal component mostly.But in the prior art,, therefore can't satisfy of the requirement of high-quality interchanger to Aluminium Alloy Plate owing to tensile strength, unit elongation, the protruding value of cup of Aluminium Alloy Plate are all lower.Its major cause includes, and the kind that trace element adds in the aluminum alloy material and the control of addition are reasonable inadequately, and the not enough science of the complete processing control that is exactly Aluminium Alloy Plate is arranged again.Therefore, be necessary the kind and the content of trace element in the existing aluminum alloy material are adjusted, also need make it satisfy of the requirement of high-quality interchanger simultaneously by adjusting the rolling technology of aluminum alloy plate materials to Aluminium Alloy Plate.
Summary of the invention
The objective of the invention is to solve problems of the prior art, design a kind of aluminum alloy materials, and the complete processing that this materials processing is become thin plate.Make the Aluminium Alloy Plate that is processed into have the tensile strength height, good percentage elongation, the cup convexity can wait characteristics well.
For achieving the above object, technical scheme of the present invention is a kind of aluminium alloy of design, contain metallic iron and nonmetal silicon in the described aluminium alloy, the weight ratio of described metallic iron and nonmetal silicon also contains metallic copper, manganese, zinc, magnesium, titanium in described aluminium alloy between 1.0～1.5.
Wherein, the weight percent content of various elements is respectively in described aluminium alloy: the content of silicon is 0.54%～0.62%, the content of iron is 0.67%～0.75%, the content of copper is 0.01%, the content of manganese is 0.03%, the content of zinc is 0.03%, the content of magnesium is 0.01%, the content of titanium is 0.03%, the content of impurity is less than 0.15%, and remaining content is aluminium.
Technical scheme of the present invention also comprises the complete processing that designs a kind of Aluminium Alloy Plate, and described complete processing comprises the steps:
S1: batching will configure raw material as the metal proportioning of raw material by preset blending ratio;
S2: melting joins the raw material that configures that melting is a liquid aluminium alloy in the smelting furnace;
S3: casting, adopt two roller continuous casting and rolling equipment that described liquid aluminium alloy casting is become cast-rolled block, its thickness is 6.0mm～10.0mm;
S4: cold rolling, by some roads cold rolling process, described cast-rolled block is rolled into the cold-reduced sheet of 0.38mm;
S5: paper tinsel rolls, and rolls operation by twice paper tinsel at least, and the described cold-reduced sheet paper tinsel of making 0.22mm that rerolls is rolled plate;
S6: annealing, described paper tinsel is rolled plate carry out anneal.
Wherein, in described casting-rolling technology with the gauge control of cast-rolled block 8.3
± 0.20Mm～6.5
± 0.20Between the mm.
Wherein, in described cold-rolling process,, the cast-rolled block after the casting is rolled into the cold-reduced sheet of 0.38mm through five to six road cold rolling process.
Wherein, in described cold-rolling process with 8.3
± 0.20The cast-rolled block that mm is thick is rolled into the thick cold-reduced sheet of 5.0mm, is rolled into the thick cold-reduced sheet of 3.3mm, is rolled into the thick cold-reduced sheet of 1.8mm, is rolled into the thick cold-reduced sheet of 1.1mm, is rolled into the thick cold-reduced sheet of 0.65mm, is rolled into the thick cold-reduced sheet of 0.38mm by the 6th road cold rolling process again by the 5th road cold rolling process again by the 4th road cold rolling process again by the 3rd road cold rolling process again by the second road cold rolling process again by the first road cold rolling process.
Wherein, in described cold-rolling process with 6.5
± 0.20The cast-rolled block that mm is thick is rolled into the thick cold-reduced sheet of 3.3mm, is rolled into the thick cold-reduced sheet of 1.8mm, is rolled into the thick cold-reduced sheet of 1.1mm, is rolled into the thick cold-reduced sheet of 0.65mm, is rolled into the thick cold-reduced sheet of 0.38mm by the 5th road cold rolling process again by the 4th road cold rolling process again by the 3rd road cold rolling process again by the second road cold rolling process again by the first road cold rolling process.
Wherein, between described the 5th road cold rolling process and the 6th road cold rolling process, comprise and utilize side cut rewinding device described cold-reduced sheet to be cut into the technology of banded cold-reduced sheet with certain width.
Wherein, the cold-reduced sheet that 0.38mm is thick rolls operation by the first road paper tinsel and is rolled into the thick thin plate of 0.28mm, is rolled into the thick thin plate of 0.22mm by the second road cold rolling process again in described paper tinsel roll process.
Wherein, described anneal is that the thin plate after paper tinsel is rolled is put into heat treatment furnace, in 1 hour, furnace temperature is risen to 230 ℃ from normal temperature then, the heat treatment furnace that thin plate is housed is incubated 3 hours under 230 ℃ furnace temperature state, and then furnace temperature continued to be heated to 270 ℃～340 ℃, the heat treatment furnace that thin plate is housed is incubated 26 hours under 270 ℃～340 ℃ furnace temperature state, then furnace temperature was cooled to 200 ℃ in 0.5 hour, heat treatment furnace stops heating then, behind the some hrs thin plate is taken out in stove and is placed on naturally cooling the air.
Advantage of the present invention and beneficial effect are: since in aluminium alloy of the present invention reasonable configuration micro-kind and content, and the weight ratio of having set iron and silicon in the alloying element is between 1.0～1.5.Can make aluminum alloy materials have advantages of higher tensile strength and unit elongation preferably thus, and its grain orientation anisotropy is less, helps the deep-draw of aluminium sheet.
By the thickness of casting plate is brought up to 8.3mm, unannealed technology in the middle of having adopted simultaneously is rolled down to the finished product thickness thin slab by the direct calendering of casting plate, has improved the work hardening capacity of cold deformation, increase the lattice distortion energy of Deformation structure, improved the recrystallize nucleus quantity of aluminium alloy plate.
Have again, by adopting the technology of low temperature prolonged anneal, the inside of the alloy that the technical scheme of this annealing process makes can form a large amount of, tiny recrystal grain and be distributed in discontinuously around Deformation structure's crystal particle crystal boundary, so just can reach and reduce the anisotropic purpose of crystal grain, make the Deformation structure and the recrystallized structure properly distributed of the finished product, satisfying the crystal grain anisotropy is tending towards little direction and develops, having satisfied this Aluminium Alloy Plate, to have tensile strength be 115-125Mpa, material unit elongation 〉=20%, the protruding value I of cup, the mechanical performance index requirement of E 〉=7.0mm.
At present this Aluminium Alloy Plate is mainly used on the interchanger in the freezer refrigerating equipment, and this scatterer is different from the heat-dissipating aluminium plate in other general conditioner, and it has higher flange requirement for height and unit elongation requirement.
Description of drawings
Fig. 1 is the chemical ingredients chart of aluminum alloy materials of the present invention;
Fig. 2～4th utilizes the annealing process curve figure of the Aluminium Alloy Plate that the complete processing of Aluminium Alloy Plate of the present invention processes;
Fig. 5 is the annealing process laboratory test results chart that utilizes the Aluminium Alloy Plate that the complete processing of Aluminium Alloy Plate of the present invention processes.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Embodiment 1
A kind of aluminium alloy contains metallic iron and nonmetal silicon, and the weight ratio of described metallic iron and nonmetal silicon is controlled between 1.0～1.5, also contains metallic copper, manganese, zinc, magnesium, titanium in described aluminium alloy.The weight percent content of various elements is respectively in the described aluminium alloy: the content of silicon is 0.54%～0.62%, the content of iron is 0.67%～0.75%, the content of copper is 0.01%, the content of manganese is 0.03%, the content of zinc is 0.03%, the content of magnesium is 0.01%, the content of titanium is 0.03%, the content of impurity is less than 0.15%, and remaining is an aluminium.
Embodiment 2
The present invention also provides a kind of complete processing of Aluminium Alloy Plate, and described technology comprises following procedure of processing:
The first step: batching, press embodiment 1 described batching element kind and proportioning, raw material is configured;
Second step: melting joins the raw material that configures that melting is a liquid aluminium alloy in the smelting furnace by setup program;
The 3rd step: casting, adopt two roller continuous casting and rolling equipment the direct casting of described liquid aluminium alloy to be become to be suitable for the cast-rolled block of cold rolling 6.0mm～10.0mm thickness;
The 4th step: cold rolling, by five to six road cold rolling process, the thin slab after the casting is rolled into the cold-reduced sheet of 0.38mm;
The 5th step: paper tinsel rolls, and rolls operation by the twice paper tinsel, and the paper tinsel of making 0.22mm that rerolls of the cold rolling material after cold rolling is rolled plate;
The 6th step: anneal, the paper tinsel after paper tinsel is rolled rolls plate and carries out anneal.
Preferably, should be in described casting-rolling technology with the gauge control of cast-rolled block 8.3
± 0.20Mm～6.5
± 0.20Between the mm.
Preferably, in described cold-rolling process at first with 8.3
± 0.20The cast-rolled block that mm is thick is rolled into the thick cold-reduced sheet of 5.0mm by the first road cold rolling process, be rolled into the thick cold-reduced sheet of 3.3mm by the second road cold rolling process cold-reduced sheet that 5.0mm is thick again, be rolled into the thick cold-reduced sheet of 1.8mm by the 3rd road cold rolling process cold-reduced sheet that 3.3mm is thick again, be rolled into the thick cold-reduced sheet of 1.1mm by the 4th road cold rolling process cold-reduced sheet that 1.8mm is thick again, be rolled into the thick cold-reduced sheet of 0.65mm by the 5th road cold rolling process cold-reduced sheet that 1.1mm is thick again, be rolled into the thick cold-reduced sheet of 0.38mm by the 6th road cold rolling process cold-reduced sheet that 0.65mm is thick again.
In described cold-rolling process at first with 6.5
± 0.20The cast-rolled block that mm is thick is rolled into the thick cold-reduced sheet of 3.3mm, is rolled into the thick cold-reduced sheet of 1.8mm, is rolled into the thick cold-reduced sheet of 1.1mm, is rolled into the thick cold-reduced sheet of 0.65mm, is rolled into the thick cold-reduced sheet of 0.38mm by the 5th road cold rolling process cold-reduced sheet that 0.65mm is thick again by the 4th road cold rolling process cold-reduced sheet that 1.1mm is thick again by the 3rd road cold rolling process cold-reduced sheet that 1.8mm is thick again by the second road cold rolling process cold-reduced sheet that 3.3mm is thick again by the first road cold rolling process.
Be provided with side cut rewinding device between described the 5th road cold rolling process and the 6th road cold rolling process, described side cut rewinding device cuts into described cold-reduced sheet the banded cold-reduced sheet with certain width.The side cut width of cold-reduced sheet: cut finished width and be+30 (trimming allowance)+10 * cut sprouting number mm.
In described paper tinsel roll process, roll operation, the cold-reduced sheet after cold rolling is rolled into the thin plate of 0.22mm through the twice paper tinsel; At first that 0.38mm is thick cold-reduced sheet rolls operation by the first road paper tinsel and is rolled into the thick thin plate of 0.28mm, is rolled into the thick thin plate of 0.22mm by the second road cold rolling process again in described paper tinsel roll process.
Shown in Fig. 2～4, described anneal is that the thin plate after paper tinsel is rolled is put into heat treatment furnace, in 1 hour, furnace temperature is risen to 230 ℃ from normal temperature then, the heat treatment furnace that thin plate is housed is incubated 3 hours under 230 ℃ furnace temperature state, and then furnace temperature continued to be heated to 270 ℃～340 ℃, the heat treatment furnace that thin plate is housed is incubated 26 hours under 270 ℃～340 ℃ furnace temperature state, then furnace temperature was cooled to 200 ℃ in 0.5 hour, heat treatment furnace stops heating then, behind the some hrs thin plate is taken out in stove and is placed on naturally cooling the air.
Triturating of the present invention is as follows:
In technical scheme of the present invention, adopt intersection simultaneous test method, study total working modulus of different cold deformations and different finished product annealing process, to the influence of freezer, thereby determine best production technique with aluminium sheet finished product mechanical property, satisfy the technical target of the product requirement.
1, chemical ingredients meets the regulation of Fig. 1.
2, the production technique of cast-rolled block material comprises: batching, melting, casting.
Production technique routinely, aluminium alloy batching, melting adopt two roller continuous casting rolling technologies that the liquid metal direct production can be suitable for cold rolling 6.0～10.0mm thickness cast-rolled block.
3, rolling technology route:
1) the rolling technology scheme 1
Batching → melting → casting (6.5
± 0.20Mm thickness casting volume) → cold rolling → 3.3mm → 1.8mm → 1.1mm → 0.65mm (side cut width: cut finished width+30 (trimming allowance)+10 * cut sprouting number mm) → 0.38mm (changeing paper tinsel rolls) → 0.28mm → 0.22 ±
0.005Mm → minute switch to trimmed size → finished products (H22 state) → mechanical properties test → finished product inspection → packing → warehouse-in.
2) the calendering technology scheme 2
Batching → melting → casting (8.3
± 0.20Mm thickness casting volume) → cold rolling → 5.0mm → 3.3mm → 1.8mm → 1.1mm → 0.65mm (side cut width: cut finished width+30 (trimming allowance)+10 * cut sprouting number mm) → 0.38mm (changeing paper tinsel rolls) → 0.28mm → 0.22
± 0.005Mm → minute switch to trimmed size → finished products (H22 state) → mechanical properties test → finished product inspection → packing → warehouse-in.
4, finished product annealing process: (temperature difference)
1) first kind of annealing process scheme of 0.22mm aluminum alloy thin board finished product as shown in Figure 2.
2) second kind of annealing process scheme of 0.22mm aluminum alloy thin board finished product as shown in Figure 3.
3) the third annealing process scheme of 0.22mm aluminum alloy thin board finished product as shown in Figure 4.
5, result such as the following table of above-mentioned research behind testing laboratory's finished products: as can be known from Fig. 5, draw with testing laboratory's technological test, this finished product annealed metal temperature is best for 310 ℃, changes industrial experimentation over to, and this production technique has obtained further contrast verification.
By the research of above-mentioned Aluminium Alloy Plate, find that iron silicon ratio is in the aluminium alloy element at 1.0～1.5 o'clock, have advantages of higher tensile strength and unit elongation, and its grain orientation anisotropy is less, helps the aluminium sheet deep-draw.
Middle unannealed by the thickness of casting plate being brought up to the 8.3mm employing, be rolled down to finished product thickness by the direct calendering of casting plate, improve the cold deformation work hardening capacity, increase Deformation structure lattice distortion energy, raising aluminium sheet recrystallize nucleus quantity.
By adopting low temperature prolonged anneal technology, it is the scheme 2 in the annealing process experiment, form a large amount of tiny, the recrystal grain interruption is distributed in around Deformation structure's crystal particle crystal boundary, reduce the anisotropic purpose of crystal grain to reach, satisfying this product tensile strength is 115-125Mpa, material unit elongation 〉=20%, the protruding value I of cup, the mechanical performance index requirement of E 〉=7.0mm.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an aluminium alloy is characterized in that, contains metallic iron and nonmetal silicon in the described aluminium alloy, and the weight ratio of described metallic iron and nonmetal silicon also contains metallic copper, manganese, zinc, magnesium, titanium in described aluminium alloy between 1.0～1.5.
2. aluminium alloy as claimed in claim 1, it is characterized in that, the weight percent content of various elements is respectively in described aluminium alloy: the content of silicon is 0.54%～0.62%, the content of iron is 0.67%～0.75%, the content of copper is 0.01%, the content of manganese is 0.03%, the content of zinc is 0.03%, the content of magnesium is 0.01%, the content of titanium is 0.03%, the content of impurity is less than 0.15%, and remaining content is aluminium.
3. the complete processing of an Aluminium Alloy Plate is characterized in that, described complete processing comprises the steps:
S1: will configure as the metal of raw material by preset blending ratio;
S2: the raw material that configures joined melting is a liquid aluminium alloy in the smelting furnace;
S3: adopt two roller continuous casting and rolling equipment that described liquid aluminium alloy casting is become cast-rolled block, its thickness is 6.0mm～10.0mm;
S4: by some roads cold rolling process, the cast-rolled block after the casting is rolled into cold-reduced sheet, its thickness is 0.38mm;
S5: roll operation by twice paper tinsel at least, described cold-reduced sheet is rolled into paper tinsel rolls plate, its thickness is 0.22mm;
S6: described paper tinsel is rolled plate carry out anneal.
4. as the complete processing of Aluminium Alloy Plate as described in the claim 3, it is characterized in that, in described casting-rolling technology with the gauge control of cast-rolled block 8.3
± 0.20Mm～6.5
± 0.20Between the mm.
5. as the complete processing of Aluminium Alloy Plate as described in the claim 4, it is characterized in that through five to six road cold rolling process, described cast-rolled block is rolled into the cold-reduced sheet of 0.38mm in described cold-rolling process.
6. as the complete processing of Aluminium Alloy Plate as described in the claim 5, it is characterized in that, in described cold-rolling process with 8.3
± 0.20The cast-rolled block that mm is thick is rolled into the thick cold-reduced sheet of 5.0mm, is rolled into the thick cold-reduced sheet of 3.3mm, is rolled into the thick cold-reduced sheet of 1.8mm, is rolled into the thick cold-reduced sheet of 1.1mm, is rolled into the thick cold-reduced sheet of 0.65mm, is rolled into the thick cold-reduced sheet of 0.38mm by the 6th road cold rolling process again by the 5th road cold rolling process again by the 4th road cold rolling process again by the 3rd road cold rolling process again by the second road cold rolling process again by the first road cold rolling process.
7. as the complete processing of Aluminium Alloy Plate as described in the claim 5, it is characterized in that, in described cold-rolling process with 6.5
± 0.20The cast-rolled block that mm is thick is rolled into the thick cold-reduced sheet of 3.3mm, is rolled into the thick cold-reduced sheet of 1.8mm, is rolled into the thick cold-reduced sheet of 1.1mm, is rolled into the thick cold-reduced sheet of 0.65mm, is rolled into the thick cold-reduced sheet of 0.38mm by the 5th road cold rolling process again by the 4th road cold rolling process again by the 3rd road cold rolling process again by the second road cold rolling process again by the first road cold rolling process.
8. as the complete processing of Aluminium Alloy Plate as described in claim 6 or 7, it is characterized in that, between described the 5th road cold rolling process and the 6th road cold rolling process, comprise the operation that described cold-reduced sheet is cut into banded cold-reduced sheet by side cut rewinding device with certain width.
9. as the complete processing of Aluminium Alloy Plate as described in the claim 8, it is characterized in that the cold-reduced sheet that 0.38mm is thick rolls operation by the first road paper tinsel and is rolled into the thick thin plate of 0.28mm, is rolled into the thick thin plate of 0.22mm by the second road cold rolling process again in described paper tinsel roll process.
10. as the complete processing of Aluminium Alloy Plate as described in the claim 3, it is characterized in that, anneal among the described step S6 is that the thin plate after paper tinsel is rolled is put into heat treatment furnace, in 1 hour, furnace temperature is risen to 230 ℃ from normal temperature then, the heat treatment furnace that thin plate is housed is incubated 3 hours under 230 ℃ furnace temperature state, and then furnace temperature continued to be heated to 270 ℃～340 ℃, the heat treatment furnace that thin plate is housed is incubated 26 hours under 270 ℃～340 ℃ furnace temperature state, then furnace temperature was cooled to 200 ℃ in 0.5 hour, heat treatment furnace stops heating then, behind the some hrs thin plate is taken out in stove and is placed on naturally cooling the air.
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| CN200910180807A CN101705394A (en) | 2009-10-15 | 2009-10-15 | Aluminum alloy and process for processing aluminum alloy plate |
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| CN112620597A (en) * | 2020-12-30 | 2021-04-09 | 镇江龙源铝业有限公司 | Preparation method of aluminum material for train control system RBC cabinet heat dissipation tooth sheet |
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