CN114318034A - Manufacturing method for producing aluminum alloy stamping part for vehicle bumper by using air cushion furnace - Google Patents
Manufacturing method for producing aluminum alloy stamping part for vehicle bumper by using air cushion furnace Download PDFInfo
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- CN114318034A CN114318034A CN202111604093.5A CN202111604093A CN114318034A CN 114318034 A CN114318034 A CN 114318034A CN 202111604093 A CN202111604093 A CN 202111604093A CN 114318034 A CN114318034 A CN 114318034A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 41
- 239000000956 alloy Substances 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000005266 casting Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000005097 cold rolling Methods 0.000 claims abstract description 16
- 238000005098 hot rolling Methods 0.000 claims abstract description 16
- 238000003801 milling Methods 0.000 claims abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims description 26
- 229910052749 magnesium Inorganic materials 0.000 claims description 14
- 239000011777 magnesium Substances 0.000 claims description 14
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 8
- ZGUQGPFMMTZGBQ-UHFFFAOYSA-N [Al].[Al].[Zr] Chemical compound [Al].[Al].[Zr] ZGUQGPFMMTZGBQ-UHFFFAOYSA-N 0.000 claims description 8
- -1 aluminum-manganese Chemical compound 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 238000009749 continuous casting Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 4
- 238000004148 unit process Methods 0.000 claims description 4
- 229910001626 barium chloride Inorganic materials 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004080 punching Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
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- 238000005452 bending Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 238000001953 recrystallisation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- 230000010287 polarization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005303 weighing Methods 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
A manufacturing method of an aluminum alloy stamping part for producing a vehicle bumper by using an air cushion furnace belongs to the technical field of metal materials. The method solves the problem that the aluminum alloy stamping part for the vehicle bumper manufactured by the existing method is cracked after being punched. The method comprises the following steps: firstly, preparing materials; secondly, smelting and casting; thirdly, milling a surface; fourthly, heating, hot rolling and cold rolling; fifthly, heating and annealing. The invention adopts the air cushion furnace production process, and solves the problems of inhomogeneous and unstable performance of the annealing product of the original box-type furnace; the alloy has uniform and stable mechanical property, good stamping effect and no cracking after stamping. The aluminum alloy stamping part for the vehicle bumper disclosed by the invention is small in specific gravity, is only 1/3 made of steel, and can reduce the weight of a vehicle body and save energy consumption; the surface quality is uniform; good mechanical property and punching forming property, is beneficial to post processing, is easy to recycle aluminum waste, can be recycled, is not combusted, and is safe when meeting fire. The aluminum alloy stamping part produced by the air cushion furnace is suitable for vehicle bumpers.
Description
Technical Field
The invention belongs to the technical field of metal materials, and particularly relates to a method for manufacturing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace.
Background
With the development of scientific technology, the lightweight automobile has a new development direction in the aspects of improving the manufacturing quality and reducing the energy consumption. When the design strength requirement is met, the weight of the aluminum alloy stamping part is far lower than that of a steel stamping part, so that the load of a vehicle body is reduced, and the purposes of energy conservation and consumption reduction are achieved. In practical application, the advantages of the aluminum alloy for the vehicle are very obvious. The aluminum alloy stamping part for the vehicle bumper manufactured by the existing method often has the cracking problem.
Disclosure of Invention
The invention aims to solve the problem that an aluminum alloy stamping part for a vehicle bumper manufactured by the existing method is cracked after being punched, and provides a manufacturing method for producing the aluminum alloy stamping part for the vehicle bumper by using an air cushion furnace.
A manufacturing method for producing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace comprises the following steps:
firstly, preparing materials: the composition by weight percentage is Mn: 0.4% -1.0%, Mg: 4.0-4.9%, Cr: 0.05-0.25 percent of pure aluminum ingot, pure magnesium ingot, aluminum-manganese intermediate alloy and aluminum-zirconium intermediate alloy are weighed, wherein the impurities Si and Fe are less than 0.4 percent, the impurity Cu is less than 0.1 percent, the impurity Zn is less than 0.25 percent, the impurity Ti is less than 0.15 percent, and the balance is Al;
smelting and casting: adding the pure aluminum ingot and the aluminum-manganese intermediate alloy into a resistance reflection furnace, heating to 760-795 ℃, preserving heat, adding the aluminum-zirconium intermediate alloy, stirring once every 10-25 min for 2-5 times, adding the pure magnesium ingot, stirring for 5-10 min, and adopting Ar-Cl2Refining the mixed gas for 4-10 min, and then adding a covering agent to obtain an alloy melt;
at 740-760 ℃, introducing the alloy melt into a standing furnace of a resistance reflection furnace, and introducing Ar-Cl2Refining the mixed gas for 9-15 min, standing for 10-25 min, keeping the alloy melt liquid level in the resistance reflection furnace and the alloy melt liquid level in the flow disc at the same level, and then performing semi-continuous casting under the conditions that the casting speed is 35-40 mm/min, the casting temperature is 720-740 ℃, and the casting cooling water pressure is 0.03-0.08 MPa to obtain the large-size aluminum alloy flat ingot for the vehicle bumper;
thirdly, milling the surface: milling the surface of the large-size aluminum alloy flat cast ingot for the vehicle bumper, and milling 15-30 mm of oxide skin on each surface to obtain milled cast ingots;
fourthly, heating, hot rolling and cold rolling: loading the milled cast ingot into a push furnace for soaking heating, wherein the temperature is 560 ℃, the cast ingot is heated for 5.5 hours to 490 ℃, the cast ingot is heated for 10 hours to 520 ℃, the cast ingot is taken out of the furnace after heat preservation is carried out for 5 hours, then hot rolling is carried out to obtain a hot rolling finished product thickness coil, and then cold rolling is carried out on a cold rolling mill to obtain a strip;
fifthly, heating and annealing: heating the strip in an air cushion furnace to 300 ℃, keeping the heating and heat preservation time at 2.0625min, cutting the strip at the unit process section speed of 24m/min to obtain a finished plate, and then carrying out stamping forming to obtain an aluminum alloy stamping part for the vehicle bumper, thereby completing the manufacturing method.
The invention has the advantages that:
1. the invention adopts the air cushion furnace production process, and solves the problems of inhomogeneous and unstable performance of the annealing product of the original box-type furnace; by controlling the annealing temperature and the heating annealing time, the alloy has uniform and stable mechanical property and good stamping effect; the aluminum alloy stamping part for the vehicle bumper, prepared by the method, has uniform and stable performance, does not crack after being stamped, and has the specified non-proportional elongation stress of 255.0-260.2N/mm2The tensile strength is 345.1-349.1N/mm2The elongation is 12.20-14.56%, the surface of the aluminum alloy structural member for the vehicle prepared by the box type furnace has slight oil spots and scratches, the use of the finished product is influenced, and the specified non-proportional elongation stress is 265.2-279.5N/mm2The tensile strength is 349.2-371.5N/mm2The elongation is 10.80-11.64%, and the problem that the aluminum alloy stamping part for the vehicle bumper prepared by the conventional method cracks after being punched is solved.
2. The aluminum alloy stamping part for the vehicle bumper has the advantages that the specific gravity is small, the aluminum alloy stamping part is only made of steel 1/3, the weight of a vehicle body can be reduced, and energy consumption is saved; secondly, the surface quality is uniform; thirdly, the mechanical property and the punching forming property are good, and the later processing is facilitated; and finally, the aluminum waste is easy to recycle, can be recycled, is not combusted, and is safe when meeting fire.
The aluminum alloy stamping part produced by the air cushion furnace is suitable for vehicle bumpers.
Drawings
FIG. 1 is a pictorial view of a finished panel in an example embodiment;
FIG. 2 is a polarization structure diagram of an aluminum alloy stamping part for a vehicle bumper in the example.
Detailed Description
The technical solution of the present invention is not limited to the following specific embodiments, but includes any combination of the specific embodiments.
The first embodiment is as follows: the method for manufacturing the aluminum alloy stamping part for the vehicle bumper by using the air cushion furnace comprises the following steps:
firstly, preparing materials: the composition by weight percentage is Mn: 0.4% -1.0%, Mg: 4.0-4.9%, Cr: 0.05-0.25 percent of pure aluminum ingot, pure magnesium ingot, aluminum-manganese intermediate alloy and aluminum-zirconium intermediate alloy are weighed, wherein the impurities Si and Fe are less than 0.4 percent, the impurity Cu is less than 0.1 percent, the impurity Zn is less than 0.25 percent, the impurity Ti is less than 0.15 percent, and the balance is Al;
smelting and casting: adding the pure aluminum ingot and the aluminum-manganese intermediate alloy into a resistance reflection furnace, heating to 760-795 ℃, preserving heat, adding the aluminum-zirconium intermediate alloy, stirring once every 10-25 min for 2-5 times, adding the pure magnesium ingot, stirring for 5-10 min, and adopting Ar-Cl2Refining the mixed gas for 4-10 min, and then adding a covering agent to obtain an alloy melt;
at 740-760 ℃, introducing the alloy melt into a standing furnace of a resistance reflection furnace, and introducing Ar-Cl2Refining the mixed gas for 9-15 min, standing for 10-25 min, keeping the alloy melt liquid level in the resistance reflection furnace and the alloy melt liquid level in the flow disc at the same level, and then performing semi-continuous casting under the conditions that the casting speed is 35-40 mm/min, the casting temperature is 720-740 ℃, and the casting cooling water pressure is 0.03-0.08 MPa to obtain the large-size aluminum alloy flat ingot for the vehicle bumper;
thirdly, milling the surface: milling the surface of the large-size aluminum alloy flat cast ingot for the vehicle bumper, and milling 15-30 mm of oxide skin on each surface to obtain milled cast ingots;
fourthly, heating, hot rolling and cold rolling: loading the milled cast ingot into a push furnace for soaking heating, wherein the temperature is 560 ℃, the cast ingot is heated for 5.5 hours to 490 ℃, the cast ingot is heated for 10 hours to 520 ℃, the cast ingot is taken out of the furnace after heat preservation is carried out for 5 hours, then hot rolling is carried out to obtain a hot rolling finished product thickness coil, and then cold rolling is carried out on a cold rolling mill to obtain a strip;
fifthly, heating and annealing: heating the strip in an air cushion furnace to 300 ℃, keeping the heating and heat preservation time at 2.0625min, cutting the strip at the unit process section speed of 24m/min to obtain a finished plate, and then carrying out stamping forming to obtain an aluminum alloy stamping part for the vehicle bumper, thereby completing the manufacturing method.
The second embodiment is as follows: the difference between the first embodiment and the second embodiment is that, in the first step, the composition by weight percentage is Mn: 0.8%, Mg: 4.5%, Cr: 0.15 percent of impurity Si and Fe, less than 0.4 percent of impurity Cu, less than 0.1 percent of impurity Zn, less than 0.25 percent of impurity Ti, less than 0.15 percent of impurity Ti and the balance of Al. Other steps and parameters are the same as those in the first embodiment.
The third concrete implementation mode: this embodiment differs from the first or second embodiment in that the covering agent in the second step: 32-40 parts of KCl and 38-46 parts of MgCl in parts by weight2And 5-8 parts of BaCl2The alloy melt is added in an amount of 7-8 kg/t. Other steps and parameters are the same as those in the first or second embodiment.
The fourth concrete implementation mode: the present embodiment is different from the first to third embodiments in that the semi-continuous casting is performed under the conditions of a casting speed of 38mm/min, a casting temperature of 730 ℃ and a casting cooling water pressure of 0.05MPa in the second step. Other steps and parameters are the same as those in one of the first to third embodiments.
The fifth concrete implementation mode: the embodiment is different from the first to the fourth embodiments in that the specification of the large-sized aluminum alloy flat ingot for the vehicle bumper obtained in the second step is 420 × 1200 × 5500 mm. Other steps and parameters are the same as in one of the first to fourth embodiments.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is that the milled ingot obtained in the third step has a size of 390 × 1170 × 5470 mm. Other steps and parameters are the same as those in one of the first to fifth embodiments.
The seventh embodiment: in this embodiment, together with the first to sixth embodiments, the hot rolling in step four: the rolling thickness is 390 mm-377 mm-363 mm-336 mm-309 mm-282 mm-255 mm-226 mm-197 mm-168 mm-140 mm-115 mm-90 mm-75 mm-60 mm-40 mm-25 mm-15 mm-8 mm-5 mm in sequence. Other steps and parameters are the same as those in one of the first to sixth embodiments.
The specific implementation mode is eight: this embodiment, together with the first to seventh embodiments, is the cold rolling of step four: the rolling thickness is 5.0 mm-3.8 mm-2.8 mm-2.2 mm in sequence. Other steps and parameters are the same as those in one of the first to seventh embodiments.
The specific implementation method nine: in this embodiment, together with one to eight of the embodiments, the specification of the strip obtained in the fourth step is 2.2mm × 1150 mm. Other steps and parameters are the same as those in one to eight of the embodiments.
The detailed implementation mode is ten: in this embodiment, together with the first to ninth embodiments, the specification of the finished plate in the fifth step is 2.2 × 1025 × 200 mm. Other steps and parameters are the same as those in one of the first to ninth embodiments.
The beneficial effects of the present invention are demonstrated by the following examples:
example (b):
a manufacturing method for producing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace comprises the following steps:
firstly, preparing materials: the composition by weight percentage is Mn: 0.8%, Mg: 4.5%, Cr: 0.15 percent of impurity Si and Fe, less than 0.4 percent of impurity Cu, less than 0.1 percent of impurity Zn, less than 0.25 percent of impurity Ti and the balance of Al, and weighing a pure aluminum ingot, a pure magnesium ingot, an aluminum-manganese intermediate alloy and an aluminum-zirconium intermediate alloy;
smelting and casting: adding the pure aluminum ingot and the aluminum-manganese intermediate alloy into a resistance reflection furnace, heating to 760-795 ℃, preserving heat, adding the aluminum-zirconium intermediate alloy, stirring once every 15min for 3 times, adding the pure magnesium ingot, stirring for 10min, and adopting Ar-Cl2Refining the mixed gas for 4-10 min, and then adding a covering agent to obtain an alloy melt;
at 750 deg.C, the alloy melt is led into a standing furnace of a resistance reflection furnace, Ar-Cl is introduced2Refining the mixed gas for 12min, standing for 15min, keeping the alloy melt liquid level in the resistance reverberatory furnace and the alloy melt liquid level in the flow table at the same level, and then carrying out semi-continuous casting under the conditions that the casting speed is 38mm/min, the casting temperature is 730 ℃ and the casting cooling water pressure is 0.05MPa to obtain the large-size aluminum alloy flat ingot for the vehicle bumper;
thirdly, milling the surface: milling the surface of the large-size aluminum alloy flat cast ingot for the vehicle bumper, and milling 15-30 mm of oxide skin on each surface to obtain milled cast ingots;
fourthly, heating, hot rolling and cold rolling: loading the milled cast ingot into a push furnace for soaking heating, wherein the temperature is 560 ℃, the cast ingot is heated for 5.5 hours to 490 ℃, the cast ingot is heated for 10 hours to 520 ℃, the cast ingot is taken out of the furnace after heat preservation is carried out for 5 hours, then hot rolling is carried out to obtain a hot rolling finished product thickness coil, and then cold rolling is carried out on a cold rolling mill to obtain a strip;
fifthly, heating and annealing: heating the strip in an air cushion furnace to 300 ℃, keeping the heating and heat preservation time at 2.0625min, cutting the strip at the unit process section speed of 24m/min to obtain a finished plate, and then carrying out stamping forming to obtain an aluminum alloy stamping part for the vehicle bumper, thereby completing the manufacturing method.
The covering agent in step two of this example: the composition comprises 35 parts of KCl and 42 parts of MgCl in parts by weight2And 8 parts of BaCl2The composition is 8kg/t alloy melt.
The specification of the large-size aluminum alloy flat ingot for the vehicle bumper obtained in the second step of the embodiment is 420 × 1200 × 5500 mm.
The milled ingot obtained in the third step of this example had a gauge of 390X 1170X 5470 mm.
Fourth step of this example hot rolling: the rolling thickness is 390 mm-377 mm-363 mm-336 mm-309 mm-282 mm-255 mm-226 mm-197 mm-168 mm-140 mm-115 mm-90 mm-75 mm-60 mm-40 mm-25 mm-15 mm-8 mm-5 mm in sequence.
Fourth step of this example cold rolling: the rolling thickness is 5.0 mm-3.8 mm-2.8 mm-2.2 mm in sequence,
the gauge of the strip obtained in step four of this example was 2.2mm × 1150 mm.
The specification of the finished plate in the fifth step of this example is 2.2 × 1025 × 200 mm.
As shown in fig. 1, the real object of the finished plate obtained in this embodiment is shown, and it can be seen that the surface of the manufactured finished plate is smooth and uniform, and has no surface defects such as oil spots, scratches and the like, which is beneficial to painting and ensures the appearance quality; the shape of the plate is smooth, and the forming precision and the yield of the product are ensured.
In the embodiment, the aluminum alloy stamping part for the vehicle bumper after the finished plate is stamped and formed is obtained by cutting a 30mm × 30mm sample, and then the polarized light structure is checked, as shown in fig. 2, the microstructure is an incomplete recrystallization structure, the microstructure is relatively uniform, a part of crystal grains begin to recrystallize and do not complete recrystallization, a lengthened fibrous structure also exists, the whole distribution is relatively uniform, the strength is ensured, the extensibility is ensured, the bending and stamping forming are facilitated, the specified nonproportional elongation stress, the tensile strength and the elongation mechanical property dispersion are small, the performance is uniform compared with the conventional aluminum alloy stamping part for the vehicle bumper, and the high-quality performance is suitable for manufacturing the aluminum alloy stamping part for the vehicle bumper.
Mechanical property analysis is carried out to obtain the following data parameters, which are detailed in Table 1, and the data parameters can show that the yield strength is uniform, the scattering difference of different samples is small, and the data parameters meet the standard requirement of 250-285 MPa; the tensile strength is uniform, the scattering difference of different samples is small, and the standard requirement is met, namely 340-375 MPa; the elongation rate meets the standard requirement and is more than or equal to 10 percent, the product performance is uniform, no cracking is caused after punching, and the stability of bending punching forming of the product is ensured; the alloy meets the technical standard in terms of mechanical properties, has small mechanical property dispersion difference and more uniform alloy mechanical properties, and shows that the alloy is suitable and uniform for annealing at the annealing temperature, so that the strength and higher elongation of the alloy are ensured, the formability is good, and the requirements of aluminum alloy stamping parts for vehicle bumpers are met.
TABLE 1
Claims (10)
1. A manufacturing method for producing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace is characterized by comprising the following steps:
firstly, preparing materials: the composition by weight percentage is Mn: 0.4% -1.0%, Mg: 4.0-4.9%, Cr: 0.05-0.25 percent of pure aluminum ingot, pure magnesium ingot, aluminum-manganese intermediate alloy and aluminum-zirconium intermediate alloy are weighed, wherein the impurities Si and Fe are less than 0.4 percent, the impurity Cu is less than 0.1 percent, the impurity Zn is less than 0.25 percent, the impurity Ti is less than 0.15 percent, and the balance is Al;
smelting and casting: adding the pure aluminum ingot and the aluminum-manganese intermediate alloy into a resistance reflection furnace, heating to 760-795 ℃, preserving heat, adding the aluminum-zirconium intermediate alloy, stirring once every 10-25 min for 2-5 times, adding the pure magnesium ingot, stirring for 5-10 min, and adopting Ar-Cl2Refining the mixed gas for 4-10 min, and then adding a covering agent to obtain an alloy melt;
at 740-760 ℃, introducing the alloy melt into a standing furnace of a resistance reflection furnace, and introducing Ar-Cl2Refining the mixed gas for 9-15 min, standing for 10-25 min, keeping the alloy melt liquid level in the resistance reflection furnace and the alloy melt liquid level in the flow disc at the same level, and then performing semi-continuous casting under the conditions that the casting speed is 35-40 mm/min, the casting temperature is 720-740 ℃, and the casting cooling water pressure is 0.03-0.08 MPa to obtain the large-size aluminum alloy flat ingot for the vehicle bumper;
thirdly, milling the surface: milling the surface of the large-size aluminum alloy flat cast ingot for the vehicle bumper, and milling 15-30 mm of oxide skin on each surface to obtain milled cast ingots;
fourthly, heating, hot rolling and cold rolling: loading the milled cast ingot into a push furnace for soaking heating, wherein the temperature is 560 ℃, the cast ingot is heated for 5.5 hours to 490 ℃, the cast ingot is heated for 10 hours to 520 ℃, the cast ingot is taken out of the furnace after heat preservation is carried out for 5 hours, then hot rolling is carried out to obtain a hot rolling finished product thickness coil, and then cold rolling is carried out on a cold rolling mill to obtain a strip;
fifthly, heating and annealing: heating the strip in an air cushion furnace to 300 ℃, keeping the heating and heat preservation time at 2.0625min, cutting the strip at the unit process section speed of 24m/min to obtain a finished plate, and then carrying out stamping forming to obtain an aluminum alloy stamping part for the vehicle bumper, thereby completing the manufacturing method.
2. The method for manufacturing the aluminum alloy stamped part for the bumper of the vehicle by using the air cushion furnace as claimed in claim 1, wherein the composition in the first step is Mn: 0.8%, Mg: 4.5%, Cr: 0.15 percent of impurity Si and Fe, less than 0.4 percent of impurity Cu, less than 0.1 percent of impurity Zn, less than 0.25 percent of impurity Ti, less than 0.15 percent of impurity Ti and the balance of Al.
3. The method for manufacturing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace as claimed in claim 1, wherein the covering agent in the second step: 32-40 parts of KCl and 38-46 parts of MgCl in parts by weight2And 5-8 parts of BaCl2The alloy melt is added in an amount of 7-8 kg/t.
4. The method for manufacturing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace as claimed in claim 1, wherein in the second step, the semi-continuous casting is performed under the conditions that the casting speed is 38mm/min, the casting temperature is 730 ℃, and the casting cooling water pressure is 0.05 MPa.
5. The method for manufacturing the aluminum alloy stamped parts for the vehicle bumpers by the air cushion furnace as claimed in claim 1, wherein the aluminum alloy large-size flat ingot for the vehicle bumpers obtained in the second step has a specification of 420 x 1200 x 5500 mm.
6. A method for manufacturing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace as claimed in claim 1, wherein the milled ingot obtained in the third step has a size of 390X 1170X 5470 mm.
7. The method for manufacturing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace as claimed in claim 1, wherein the hot rolling in the fourth step: the rolling thickness is 390 mm-377 mm-363 mm-336 mm-309 mm-282 mm-255 mm-226 mm-197 mm-168 mm-140 mm-115 mm-90 mm-75 mm-60 mm-40 mm-25 mm-15 mm-8 mm-5 mm in sequence.
8. The method for manufacturing the aluminum alloy stamped parts for the bumpers of the vehicles by the air cushion furnaces as claimed in claim 1, wherein the step four is cold rolling: the rolling thickness is 5.0 mm-3.8 mm-2.8 mm-2.2 mm in sequence.
9. The method for manufacturing an aluminum alloy stamping part for a vehicle bumper by using an air cushion furnace as claimed in claim 1, wherein the strip obtained in the fourth step has a size of 2.2mm x 1150 mm.
10. The method for manufacturing an aluminum alloy stamping part for a vehicle bumper by using the air cushion furnace as claimed in claim 1, wherein the specification of the finished plate in the fifth step is 2.2 x 1025 x 200 mm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756315A (en) * | 2016-11-28 | 2017-05-31 | 广西南南铝加工有限公司 | A kind of aluminum alloy plate materials preparation method |
| CN106834825A (en) * | 2016-11-16 | 2017-06-13 | 广西南南铝加工有限公司 | 5182 aluminium alloys and the aluminium alloy are prepared into the process of cover material strip material |
| CN108130461A (en) * | 2017-12-22 | 2018-06-08 | 中铝西南铝冷连轧板带有限公司 | A kind of coachbuilt body column plaque 5754 aluminum alloy base materials and its production method |
| CN109136680A (en) * | 2018-11-08 | 2019-01-04 | 东北轻合金有限责任公司 | A kind of manufacturing method of high-elongation automotive brake aluminium alloy |
| CN111560547A (en) * | 2020-05-08 | 2020-08-21 | 天津忠旺铝业有限公司 | Preparation method of 5182-O-state aluminum alloy plate for automobile |
| CN113523722A (en) * | 2021-07-15 | 2021-10-22 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy structural member for air cushion furnace production vehicle |
-
2021
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106834825A (en) * | 2016-11-16 | 2017-06-13 | 广西南南铝加工有限公司 | 5182 aluminium alloys and the aluminium alloy are prepared into the process of cover material strip material |
| CN106756315A (en) * | 2016-11-28 | 2017-05-31 | 广西南南铝加工有限公司 | A kind of aluminum alloy plate materials preparation method |
| CN108130461A (en) * | 2017-12-22 | 2018-06-08 | 中铝西南铝冷连轧板带有限公司 | A kind of coachbuilt body column plaque 5754 aluminum alloy base materials and its production method |
| CN109136680A (en) * | 2018-11-08 | 2019-01-04 | 东北轻合金有限责任公司 | A kind of manufacturing method of high-elongation automotive brake aluminium alloy |
| CN111560547A (en) * | 2020-05-08 | 2020-08-21 | 天津忠旺铝业有限公司 | Preparation method of 5182-O-state aluminum alloy plate for automobile |
| CN113523722A (en) * | 2021-07-15 | 2021-10-22 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy structural member for air cushion furnace production vehicle |
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