CN106282690B - A kind of preparation method of Aluminum alloy for automotive body plate - Google Patents
A kind of preparation method of Aluminum alloy for automotive body plate Download PDFInfo
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- CN106282690B CN106282690B CN201610622294.0A CN201610622294A CN106282690B CN 106282690 B CN106282690 B CN 106282690B CN 201610622294 A CN201610622294 A CN 201610622294A CN 106282690 B CN106282690 B CN 106282690B
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
- B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- 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
- C22F1/043—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 of alloys with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- 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
- C22F1/047—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 of alloys with magnesium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/536—Hardness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
Abstract
The invention belongs to aluminum alloy materials technical field, and in particular to a kind of preparation method of Aluminum alloy for automotive body plate.Gained body of a motor car of the invention has excellent mouldability and hardness for A layers with two-layer compound aluminium alloy, and intensity is high；B layers have a preferably moulding and higher baking vanish hardening response, two layers it is compound after aluminum alloy plate materials intensity it is high, B layer side can obtain the manufacture field that intensity raising can be widely applied to body of a motor car, panel to good moldability in painting dressing automobiles toast processing procedure simultaneously.
Description
Technical field
The invention belongs to aluminum alloy materials technical field, and in particular to a kind of preparation side of Aluminum alloy for automotive body plate
Method.
Background technology
Aluminium alloy is high, lightweight due to its intensity, and has preferable electric conductivity, be widely used in Aero-Space,
The technical fields such as automobile making turn into the optimal material of automotive light weight technology.Because aluminium alloy vehicle outer body panel mouldability,
Dent resistance, baking hardenability (after japanning) and thus obtained high mechanical strength, have thinner rule so as to manufacture
Lattice and it is lighter, while having the sheet material of A grades of surface smoothnesses.The strong of alloy can significantly be pointed out by improving Mg contents in aluminium alloy
Degree, processability and corrosion resistance, but there is delayed yield and Le Desi lines, easily there is the shortcoming of " pebbling ".And show
Having can be while meets the aluminium alloy processing technology of aluminum alloy plate materials hemming performance and surface painting brush two aspect performance requirements of linear energy
Complexity, and ingredient requirement is more harsh, cost is higher.
The content of the invention
It is an object of the invention to provide a kind of with excellent hemming performance, good surface quality, stable mechanical property
The preparation method of the Aluminum alloy for automotive body plate of stabilizability and excellent baking vanish hardening capacity.
To achieve the above object, the technical solution adopted by the present invention is, a kind of preparation side of Aluminum alloy for automotive body plate
Method, comprises the following steps：
1）Aluminium alloy plate A and aluminium alloy plate B is subjected to hot rolling and forms two-layer composite；Respectively change in the aluminium alloy plate A
Learning composition by weight percent is：Si 0.5 ~ 1.5%, Cu 0.55 ~ 1.8%, Zn 0.25 ~ 0.53%, Mg 2.5 ~ 5.0%, Fe
≤ 1%, Sc 0.1 ~ 0.2%, surplus is Al；Each chemical component weight percentage is in the aluminium alloy plate B：Si 2.5~
3.5%, Cu 0.65 ~ 1.5%, Zn 0.2 ~ 0.33%, Mg 0.4 ~ 1%, Sc 0.15 ~ 0.35%, Fe≤1%, surplus is
Al；
2）Will be through step 1）Sheet material after processing carries out solution treatment, and solid solution temperature is 470~510 DEG C, during insulation
Between be 12-15 hours；
3）Will be through step 2）Sheet material after processing carries out artificial aging processing, and artificial aging treatment temperature is 90 ~ 100 DEG C,
Time is 6 ~ 8h.
It is preferred that, the thickness of the body of a motor car two-layer compound aluminium alloy of preparation is 0.5~5mm.
It is preferred that, the aluminium alloy plate A and aluminium alloy plate B ︰ 1 of 0.76 ︰ of thickness ratio 1~1.4.
It is preferred that, the preparation method of the aluminium alloy plate A is as follows：
A, by commercial-purity aluminium, various intermediate alloys by proportioning weighed；
B, selected raw material melted, ingot casting is cast as after the refined processing of melt；
C, ingot casting carries out to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 420~440 DEG C, homogenization
Processing time is 2~10h；
D, by the slab hot-rolling after being handled through step c into plate, start rolling temperature is 440-475 DEG C, and finishing temperature is 280-300
℃；
E, the hot rolled plate obtained to step d carry out cold rolling, intermediate annealing and again it is cold rolling with obtain final thickness into
Product.
It is preferred that, the casting temperature in the step b is 670-685 DEG C.
It is preferred that, the preparation method of the aluminium alloy plate B is as follows：
（1）Commercial-purity aluminium, various intermediate alloys are weighed by proportioning；
（2）Selected raw material is melted, ingot casting is cast as after the refined processing of melt；
（3）Ingot casting is subjected to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 420~460 DEG C, uniformly
Change processing time is 2~8h；
（4）Will be through step（3）Slab hot-rolling after processing is into plate, and start rolling temperature is 450-480 DEG C, and finishing temperature is 280-
300℃；
（5）To step（4）Obtained hot rolled plate carries out cold rolling, intermediate annealing and cold rolling to obtain final thickness again
Finished product.
It is preferred that, the step（2）In casting temperature be 685-715 DEG C.
The beneficial effect comprise that：Gained body of a motor car of the invention is with A layer of two-layer compound aluminium alloy with excellent
Mouldability and hardness, intensity is high；B layers have a preferably moulding and higher baking vanish hardening response, two layers it is compound after aluminium close
Golden timber intensity is high, good moldability simultaneously B layer side can obtain intensity raising in painting dressing automobiles baking processing procedure can be extensive
Manufacture field applied to body of a motor car, panel.
With reference to specific embodiment, the invention will be further described, but protection scope of the present invention not limited to this.
Embodiment 1
A kind of preparation method of Aluminum alloy for automotive body plate, comprises the following steps：
1）Aluminium alloy plate A and aluminium alloy plate B is subjected to hot rolling and forms two-layer composite；Respectively change in the aluminium alloy plate A
Learning composition by weight percent is：Si 1.1%, Cu 0.75%, Zn 0.35%, Mg 3.5%, Fe 0.8%, Sc 0.15%, it is remaining
Measure as Al；Each chemical component weight percentage is in the aluminium alloy plate B：Si 3.0%, Cu 0.85%, Zn 0.23%, Mg
0.5%, Sc 0.25%, Fe 0.9%, surplus is Al；
2）Will be through step 1）Sheet material after processing carries out solution treatment, and solid solution temperature is 490 DEG C, and soaking time is 14
Hour；
3）Will be through step 2）Sheet material after processing carries out artificial aging processing, and artificial aging treatment temperature is 95 DEG C, time
For 6h.
The aluminium alloy plate A and aluminium alloy plate B ︰ 1 of thickness ratio 1.
The preparation method of the aluminium alloy plate A is as follows：
A, by commercial-purity aluminium, various intermediate alloys by proportioning weighed；
B, selected raw material melted, the casting temperature in ingot casting, the step b is cast as after the refined processing of melt
For 675 DEG C；
C, ingot casting carries out to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 430 DEG C, Homogenization Treatments
Time is 8h；
D, by the slab hot-rolling after being handled through step c into plate, start rolling temperature is 460 DEG C, and finishing temperature is 290 DEG C；
E, the hot rolled plate obtained to step d carry out cold rolling, intermediate annealing and again it is cold rolling with obtain final thickness into
Product.
The preparation method of the aluminium alloy plate B is as follows：
（1）Commercial-purity aluminium, various intermediate alloys are weighed by proportioning；
（2）Selected raw material is melted, ingot casting is cast as after the refined processing of melt, casting temperature is 695 DEG C；
（3）Ingot casting is subjected to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 440 DEG C, Homogenization Treatments
Time is 6h；
（4）Will be through step（3）Slab hot-rolling after processing is into plate, and start rolling temperature is 460 DEG C, and finishing temperature is 290 DEG C；
（5）To step（4）Obtained hot rolled plate carries out cold rolling, intermediate annealing and cold rolling to obtain final thickness again
Finished product.
The body of a motor car prepared in this implementation is 3mm with the thickness of two-layer compound aluminium alloy.
Embodiment 2
A kind of preparation method of Aluminum alloy for automotive body plate, comprises the following steps：
1）Aluminium alloy plate A and aluminium alloy plate B is subjected to hot rolling and forms two-layer composite；Respectively change in the aluminium alloy plate A
Learning composition by weight percent is：Si 0.5%, Cu 0.55%, Zn 0.25%, Mg 5.0%, Fe 1%, Sc 0.1%, surplus
For Al；Each chemical component weight percentage is in the aluminium alloy plate B：Si 2.5%, Cu 0.65%, Zn 0.2%, Mg
1%, Sc 0.15%, Fe≤1%, surplus is Al；
2）Will be through step 1）Sheet material after processing carries out solution treatment, and solid solution temperature is 470 DEG C, and soaking time is 15
Hour；
3）Will be through step 2）Sheet material after processing carries out artificial aging processing, and artificial aging treatment temperature is 90 DEG C, time
For 8h.
The aluminium alloy plate A and aluminium alloy plate B ︰ 1 of thickness ratio 0.76.
The preparation method of the aluminium alloy plate A is as follows：
A, by commercial-purity aluminium, various intermediate alloys by proportioning weighed；
B, selected raw material melted, the casting temperature in ingot casting, the step b is cast as after the refined processing of melt
For 670 DEG C；
C, ingot casting carries out to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 420 DEG C, Homogenization Treatments
Time is 10h；
D, by the slab hot-rolling after being handled through step c into plate, start rolling temperature is 440 DEG C, and finishing temperature is 300 DEG C；
E, the hot rolled plate obtained to step d carry out cold rolling, intermediate annealing and again it is cold rolling with obtain final thickness into
Product.
The preparation method of the aluminium alloy plate B is as follows：
（1）Commercial-purity aluminium, various intermediate alloys are weighed by proportioning；
（2）Selected raw material is melted, ingot casting is cast as after the refined processing of melt, casting temperature is 685 DEG C；
（3）Ingot casting is subjected to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 420 DEG C, Homogenization Treatments
Time is 8h；
（4）Will be through step（3）Slab hot-rolling after processing is into plate, and start rolling temperature is 450 DEG C, and finishing temperature is 280 DEG C；
（5）To step（4）Obtained hot rolled plate carries out cold rolling, intermediate annealing and cold rolling to obtain final thickness again
Finished product.
The body of a motor car prepared in this implementation is 1.5mm with the thickness of two-layer compound aluminium alloy.
Embodiment 3
A kind of preparation method of Aluminum alloy for automotive body plate, comprises the following steps：
1）Aluminium alloy plate A and aluminium alloy plate B is subjected to hot rolling and forms two-layer composite；Respectively change in the aluminium alloy plate A
Learning composition by weight percent is：Si 1.5%, Cu 1.8%, Zn 0.53%, Mg 2.5%, Fe 0.9%, Sc 0.2%, surplus
For Al；Each chemical component weight percentage is in the aluminium alloy plate B：Si 3.5%, Cu 1.5%, Zn 0.33%, Mg
0.4%, Sc 0.35%, Fe 0.9%, surplus is Al；
2）Will be through step（2）Sheet material after processing carries out solution treatment, and solid solution temperature is 510 DEG C, and soaking time is
12 hours；
3）Will be through step（3）Sheet material after processing carries out artificial aging processing, and artificial aging treatment temperature is 100 DEG C, when
Between be 6h.
The aluminium alloy plate A and aluminium alloy plate B ︰ 1 of thickness ratio 1.4.
The preparation method of the aluminium alloy plate A is as follows：
A, by commercial-purity aluminium, various intermediate alloys by proportioning weighed；
B, selected raw material melted, the casting temperature in ingot casting, the step b is cast as after the refined processing of melt
For 685 DEG C；
C, ingot casting carries out to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 440 DEG C, Homogenization Treatments
Time is 2h；
D, by the slab hot-rolling after being handled through step c into plate, start rolling temperature is 475 DEG C, and finishing temperature is 300 DEG C；
E, the hot rolled plate obtained to step d carry out cold rolling, intermediate annealing and again it is cold rolling with obtain final thickness into
Product.
The preparation method of the aluminium alloy plate B is as follows：
（1）Commercial-purity aluminium, various intermediate alloys are weighed by proportioning；
（2）Selected raw material is melted, ingot casting is cast as after the refined processing of melt, casting temperature is 715 DEG C；
（3）Ingot casting is subjected to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 460 DEG C, Homogenization Treatments
Time is 2h；
（4）Will be through step（3）Slab hot-rolling after processing is into plate, and start rolling temperature is 480 DEG C, and finishing temperature is 300 DEG C；
（5）To step（4）Obtained hot rolled plate carries out cold rolling, intermediate annealing and cold rolling to obtain final thickness again
Finished product.
The body of a motor car prepared in this implementation is 5mm with the thickness of two-layer compound aluminium alloy.
Performance test
The performance test results such as following table of Aluminum alloy for automotive body plate prepared by embodiment 1-3：
Note：Painting brush line strength evaluates (1 grade：Surface is without white stripes；2 grades：There are discontinuous white stripes on surface；3 grades：Table
There are continuous white stripes in face).Crimping grade evaluates (1 grade：Smooth, the non-microcracked and continuous constriction in surface；2 grades：Surface is slight
Coarse, non-microcracked and continuous constriction；3 grades：There are micro-crack or continuous constriction in surface；4 grades：There is obvious crackle on surface).
Claims (7)
1. a kind of preparation method of Aluminum alloy for automotive body plate：It is characterised in that it includes following steps：
1）Aluminium alloy plate A and aluminium alloy plate B is subjected to hot rolling and forms two-layer composite；In the aluminium alloy plate A it is each chemistry into
Point percentage by weight is：Si 0.5 ~ 1.5%, Cu 0.55 ~ 1.8%, Zn 0.25 ~ 0.53%, Mg 2.5 ~ 5.0%, Fe≤
1%, Sc 0.1 ~ 0.2%, surplus is Al；Each chemical component weight percentage is in the aluminium alloy plate B：Si 2.5 ~ 3.5%,
Cu 0.65 ~ 1.5%, Zn 0.2 ~ 0.33%, Mg 0.4 ~ 1%, Sc 0.15 ~ 0.35%, Fe≤1%, surplus is Al；
2）Will be through step 1）Sheet material after processing carries out solution treatment, and solid solution temperature is 470~510 DEG C, and soaking time is
12-15 hours；
3）Will be through step 2）Sheet material after processing carries out artificial aging processing, and artificial aging treatment temperature is 90 ~ 100 DEG C, time
For 6 ~ 8h.
2. the preparation method of Aluminum alloy for automotive body plate as claimed in claim 1：Characterized in that, the body of a motor car uses double
The thickness of layer Al-alloy is 0.5~5mm.
3. the preparation method of Aluminum alloy for automotive body plate as claimed in claim 1, it is characterised in that：The aluminium alloy plate A
With the aluminium alloy plate B ︰ 1 of 0.76 ︰ of thickness ratio 1~1.4.
4. the preparation method of Aluminum alloy for automotive body plate as claimed in claim 1, it is characterised in that：The aluminium alloy plate A
Preparation method it is as follows：
A, by commercial-purity aluminium, various intermediate alloys by proportioning weighed；
B, selected raw material melted, ingot casting is cast as after the refined processing of melt；
C, ingot casting carries out to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 420~440 DEG C, Homogenization Treatments
Time is 2~10h；
D, by the slab hot-rolling after being handled through step c into plate, start rolling temperature is 440-475 DEG C, and finishing temperature is 280-300 DEG C；
E, the hot rolled plate obtained to step d carry out cold rolling, intermediate annealing and the again cold rolling finished product to obtain final thickness.
5. the preparation method of Aluminum alloy for automotive body plate as claimed in claim 4, it is characterised in that：In the step b
Casting temperature is 670-685 DEG C.
6. the preparation method of Aluminum alloy for automotive body plate as claimed in claim 1, it is characterised in that：The aluminium alloy plate B
Preparation method it is as follows：
（1）Commercial-purity aluminium, various intermediate alloys are weighed by proportioning；
（2）Selected raw material is melted, ingot casting is cast as after the refined processing of melt；
（3）Ingot casting is subjected to Homogenization Treatments behind crop, milling face, Homogenization Treatments temperature is 420~460 DEG C, at homogenization
The reason time is 2~8h；
（4）Will be through step（3）Slab hot-rolling after processing is into plate, and start rolling temperature is 450-480 DEG C, and finishing temperature is 280-300
℃；
（5）To step（4）Obtained hot rolled plate carry out cold rolling, intermediate annealing and again it is cold rolling with obtain final thickness into
Product.
7. the preparation method of Aluminum alloy for automotive body plate as claimed in claim 6, it is characterised in that：The step（2）In
Casting temperature be 685-715 DEG C.
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| CN201610622294.0A CN106282690B (en) | 2016-08-02 | 2016-08-02 | A kind of preparation method of Aluminum alloy for automotive body plate |
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| EP1934013B2 (en) * | 2005-10-13 | 2022-05-11 | Novelis Koblenz GmbH | Multi-layered brazing sheet |
| WO2010119070A2 (en) * | 2009-04-16 | 2010-10-21 | Aleris Aluminum Koblenz Gmbh | Weldable metal article |
| CN101880804B (en) * | 2010-07-30 | 2012-07-04 | 浙江巨科铝业有限公司 | Aluminum-magnesium aluminum alloy for automobile body plate and manufacturing method thereof |
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