CN114318026A - Method for manufacturing aluminum alloy foil for automobile heat shield - Google Patents
Method for manufacturing aluminum alloy foil for automobile heat shield Download PDFInfo
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- CN114318026A CN114318026A CN202111602571.9A CN202111602571A CN114318026A CN 114318026 A CN114318026 A CN 114318026A CN 202111602571 A CN202111602571 A CN 202111602571A CN 114318026 A CN114318026 A CN 114318026A
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- aluminum alloy
- heat shield
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- foil
- annealing
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 48
- 239000011888 foil Substances 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000000137 annealing Methods 0.000 claims abstract description 29
- 238000005266 casting Methods 0.000 claims abstract description 27
- 238000005097 cold rolling Methods 0.000 claims abstract description 23
- 239000011265 semifinished product Substances 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000005098 hot rolling Methods 0.000 claims abstract description 5
- 238000005303 weighing Methods 0.000 claims abstract description 5
- 239000000498 cooling water Substances 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 abstract description 6
- 239000000047 product Substances 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
A manufacturing method of an aluminum alloy foil for an automobile heat shield belongs to the technical field of metal materials. The method solves the problems that the aluminum alloy foil for the automobile heat shield manufactured by the existing method has poor mechanical strength and is easy to crack when being punched. The method comprises the following steps: weighing raw materials according to the weight percentage, and carrying out fusion casting to prepare an aluminum alloy ingot; secondly, heating the aluminum alloy cast ingot and then carrying out hot rolling to obtain a hot-rolled semi-finished product; thirdly, cold rolling, annealing and secondary cold rolling are carried out on the hot-rolled semi-finished product to obtain a finished foil; and fourthly, discharging the finished foil after annealing and air cooling. The tensile strength of the aluminum alloy foil for the automobile heat shield is 68-75N/mm2The elongation is 12.8-16.3%; hair brushThe alloy 1050 is obviously adopted, so that the product cost is low, the performance is good, the product quality is stable in large-scale industrial production, the production control difficulty is low, and the punching requirement of a user is met. The invention is suitable for the aluminum alloy foil for the automobile heat shield.
Description
Technical Field
The invention belongs to the technical field of metal materials, and particularly relates to a manufacturing method of an aluminum alloy foil for an automobile heat shield.
Background
With the vigorous development of automobile development and the localization of imported automobiles, the aluminum alloy materials required by automobiles are also developed to the localization, the aluminum alloy foil for the automobile heat shield at present mainly depends on import, and the manufactured aluminum alloy foil for the automobile heat shield has poor mechanical strength and the problem of punching cracking in the using process of users; the 1050 alloy is adopted, and the production process of the aluminum alloy foil for the automobile heat shield is determined through processes of cold rolling, annealing, finishing and the like, so that the performance of the foil is ensured, and the aluminum strip meeting the use requirements of users is produced.
Disclosure of Invention
The invention aims to solve the problems of poor mechanical strength and easy cracking during punching of an aluminum alloy foil for an automobile heat shield manufactured by the conventional method, and provides a method for manufacturing the aluminum alloy foil for the automobile heat shield.
A manufacturing method of an aluminum alloy foil for an automobile heat shield comprises the following steps:
the alloy consists of Si: 0.20-0.28%, Fe: 0.38% -0.42%, Ti: 0.028-0.033% and the balance of Al, weighing raw materials, then casting, wherein the casting process is executed according to the current process of 1050 alloy, and the aluminum alloy cast ingot is prepared under the conditions that the casting temperature is 680-720 ℃, the casting speed is 55-60 mm/min, the casting cooling water pressure is 0.003-0.1 MPa, and the cooling water temperature is 20-26 ℃;
secondly, heating the aluminum alloy cast ingot, setting the temperature of furnace gas at 520-540 ℃, heating for 13-16 h, taking out of the furnace, and hot-rolling to the thickness of 6.0-7.8 mm to obtain a hot-rolled semi-finished product;
thirdly, rolling the hot-rolled semi-finished product by a cold rolling mill, controlling the processing rate to be 80-90%, cold rolling the semi-finished product to be intermediate in thickness, annealing, cold rolling for the second time, and controlling the processing rate to be 80-95% to obtain a finished foil;
and fourthly, placing the finished foil into an annealing furnace, setting the furnace gas temperature to be 250-400 ℃, annealing for 11-16 h, discharging and air cooling to finish the manufacturing of the aluminum alloy foil for the automobile heat shield.
The invention has the advantages that:
the invention adopts 1050 alloy, determines the finished product annealing production process through processes of cold rolling, annealing, finishing and the like, provides guarantee for controlling parameters of each link of production accurately, realizes stable product quality in large-scale industrial production, has low production control difficulty, meets the punching requirement of users, ensures mechanical property, and produces the aluminum alloy foil material for the automobile heat shield meeting the use requirement of the users.
The aluminum alloy foil for the automobile heat shield has the tensile strength of 68-75N/mm2The elongation is 12.8-16.3%, and the tensile strength meeting the user requirement is 60-115N/mm2The elongation is more than or equal to 12 percent, and the product has low cost and good performance. The problems of poor mechanical strength and punching cracking of the aluminum alloy foil for the automobile heat shield prepared by the existing method are solved.
The invention is suitable for the aluminum alloy foil for the automobile heat shield.
Drawings
FIG. 1 is a high magnification structural view of an aluminum alloy foil for an automobile heat shield produced in the example;
FIG. 2 is a high magnification structural view of an aluminum alloy foil for an automobile heat shield produced 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 foil for the automobile heat shield comprises the following steps:
the alloy consists of Si: 0.20-0.28%, Fe: 0.38% -0.42%, Ti: 0.028-0.033% and the balance of Al, weighing raw materials, then casting, wherein the casting process is executed according to the current process of 1050 alloy, and the aluminum alloy cast ingot is prepared under the conditions that the casting temperature is 680-720 ℃, the casting speed is 55-60 mm/min, the casting cooling water pressure is 0.003-0.1 MPa, and the cooling water temperature is 20-26 ℃;
secondly, heating the aluminum alloy cast ingot, setting the temperature of furnace gas at 520-540 ℃, heating for 13-16 h, taking out of the furnace, and hot-rolling to the thickness of 6.0-7.8 mm to obtain a hot-rolled semi-finished product;
thirdly, rolling the hot-rolled semi-finished product by a cold rolling mill, controlling the processing rate to be 80-90%, cold rolling the semi-finished product to be intermediate in thickness, annealing, cold rolling for the second time, and controlling the processing rate to be 80-95% to obtain a finished foil;
and fourthly, placing the finished foil into an annealing furnace, setting the furnace gas temperature to be 250-400 ℃, annealing for 11-16 h, discharging and air cooling to finish the manufacturing of the aluminum alloy foil for the automobile heat shield.
In the first step of the present embodiment, the raw materials are weighed according to the weight percentage composition of each element, and the types of the raw materials are not limited.
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 Si: 0.25%, Fe: 0.40%, Ti: 0.03% and the balance Al. Other steps and parameters are the same as those in the first embodiment.
The third concrete implementation mode: the embodiment is different from the first or second embodiment in that in the first step, an aluminum alloy ingot is made under the conditions that the casting temperature is 690 ℃, the casting speed is 55mm/min, the casting cooling water pressure is 0.0036MPa, and the cooling water temperature is 24 ℃. Other steps and parameters are the same as those in the first or second embodiment.
The fourth concrete implementation mode: the difference between the first embodiment and the third embodiment is that the temperature of furnace gas in the second step is set to 530 ℃, the furnace gas is heated for 14 hours, and the furnace gas is hot-rolled to the thickness of 7.0mm after being discharged. Other steps and parameters are the same as those in one of the first to third embodiments.
The fifth concrete implementation mode: the difference between the first embodiment and the fourth embodiment is that the hot-rolled semi-finished product is rolled by a cold rolling mill in the third step, the working ratio is controlled at 85%, the intermediate thickness is rolled by cold rolling, annealing and secondary rolling by cold rolling are carried out, and the working ratio is controlled at 90%. 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 annealing is performed in the third step: the temperature of furnace gas is 380-460 ℃, the annealing time is 11-16 h, and then the furnace is taken out for air cooling. Other steps and parameters are the same as those in one of the first to fifth embodiments.
The seventh embodiment: in the fourth embodiment, together with the fourth to sixth embodiments, the furnace gas temperature is set to 380 ℃, the annealing time is 12 hours, and then the annealing furnace is discharged and air-cooled. Other steps and parameters are the same as those of one of the fourth to sixth embodiments.
The beneficial effects of the present invention are demonstrated by the following examples:
example (b):
a manufacturing method of an aluminum alloy foil for an automobile heat shield comprises the following steps:
the alloy consists of Si: 0.25%, Fe: 0.40%, Ti: 0.03 percent and the balance of Al, weighing raw materials, then casting, wherein the casting process is executed according to the current process of 1050 alloy, and an aluminum alloy ingot is prepared under the conditions that the casting temperature is 690 ℃, the casting speed is 55mm/min, the casting cooling water pressure is 0.006MPa, and the cooling water temperature is 24 ℃;
secondly, heating the aluminum alloy cast ingot, setting the furnace gas temperature at 530 ℃, heating for 15h, taking out of the furnace, and hot-rolling to the thickness of 6.0mm to obtain a hot-rolled semi-finished product;
thirdly, rolling the hot-rolled semi-finished product by a cold rolling mill, controlling the processing rate to be 80%, cold rolling and rolling the semi-finished product for an intermediate thickness, annealing, cold rolling for a second time, and controlling the processing rate to be 90% to obtain a finished foil;
and fourthly, placing the finished foil into an annealing furnace, setting the furnace gas temperature at 400 ℃, annealing for 13 hours, and then discharging for air cooling to finish the manufacture of the aluminum alloy foil for the automobile heat shield.
Annealing in step three of the present example: the furnace gas temperature is 420 ℃, the annealing time is 14h, and then the furnace is discharged for air cooling.
The crystalline phase structure of the aluminum alloy foil for the automobile heat shield prepared by the embodiment is shown in fig. 1 and 2, and the crystal grains of the structure are fine and uniform; the obtained material is randomly sampled by 3 parts and then is subjected to mechanical property detection, and the result is shown in Table 1, so that the obtained material meets the requirement, and the tensile strength is 60-115N/mm2The elongation is more than or equal to 12 percent, and the punching forming has no defects such as cracks and the like.
TABLE 1
If the annealing and the cold rolling in the third step of the embodiment are cancelled and the mechanical property test is carried out on the prepared material, the results are shown in Table 2, and the material does not meet the condition that the tensile strength is 60-115N/mm2And the elongation is more than or equal to 12 percent.
TABLE 2
Claims (7)
1. A manufacturing method of an aluminum alloy foil for an automobile heat shield is characterized by comprising the following steps:
the alloy consists of Si: 0.20-0.28%, Fe: 0.38% -0.42%, Ti: 0.028-0.033% and the balance of Al, weighing raw materials, then casting, wherein the casting process is executed according to the current process of 1050 alloy, and the aluminum alloy cast ingot is prepared under the conditions that the casting temperature is 680-720 ℃, the casting speed is 55-60 mm/min, the casting cooling water pressure is 0.003-0.1 MPa, and the cooling water temperature is 20-26 ℃;
secondly, heating the aluminum alloy cast ingot, setting the temperature of furnace gas at 520-540 ℃, heating for 13-16 h, taking out of the furnace, and hot-rolling to the thickness of 6.0-7.8 mm to obtain a hot-rolled semi-finished product;
thirdly, rolling the hot-rolled semi-finished product by a cold rolling mill, controlling the processing rate to be 80-90%, cold rolling the semi-finished product to be intermediate in thickness, annealing, cold rolling for the second time, and controlling the processing rate to be 80-95% to obtain a finished foil;
and fourthly, placing the finished foil into an annealing furnace, setting the furnace gas temperature to be 250-400 ℃, annealing for 11-16 h, discharging and air cooling to finish the manufacturing of the aluminum alloy foil for the automobile heat shield.
2. The method of claim 1, wherein the aluminum alloy foil for a heat shield of an automobile comprises the following components in percentage by weight: 0.25%, Fe: 0.40%, Ti: 0.03% and the balance Al.
3. The method for producing an aluminum alloy foil for a vehicle heat shield as recited in claim 1, wherein in the first step, an aluminum alloy ingot is produced at a casting temperature of 690 ℃, a casting speed of 55mm/min, a casting cooling water pressure of 0.0036MPa, and a cooling water temperature of 24 ℃.
4. The method for manufacturing an aluminum alloy foil for an automobile heat shield according to claim 1, wherein the temperature of furnace gas in the second step is set to 530 ℃, the heating is carried out for 14 hours, and the aluminum alloy foil is hot-rolled to a thickness of 7.0mm after being discharged from the furnace.
5. The method for manufacturing an aluminum alloy foil for an automobile heat shield according to claim 1, wherein the hot-rolled semi-finished product is subjected to cold rolling in the third step, wherein the reduction ratio is controlled to 85%, the cold rolling is performed to reduce the intermediate thickness, annealing is performed, the cold rolling is performed for the second time, and the reduction ratio is controlled to 90%.
6. The method for manufacturing an aluminum alloy foil for an automobile heat shield according to claim 1, characterized by annealing in the third step: the temperature of furnace gas is 380-460 ℃, the annealing time is 11-16 h, and then the furnace is taken out for air cooling.
7. The method for manufacturing the aluminum alloy foil for the automobile heat shield according to claim 1, wherein the temperature of the furnace gas is 380 ℃ in the fourth step, the annealing time is 12 hours, and then the aluminum alloy foil is discharged from the furnace and cooled in air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111602571.9A CN114318026A (en) | 2021-12-24 | 2021-12-24 | Method for manufacturing aluminum alloy foil for automobile heat shield |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111602571.9A CN114318026A (en) | 2021-12-24 | 2021-12-24 | Method for manufacturing aluminum alloy foil for automobile heat shield |
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| CN114318026A true CN114318026A (en) | 2022-04-12 |
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| CN202111602571.9A Pending CN114318026A (en) | 2021-12-24 | 2021-12-24 | Method for manufacturing aluminum alloy foil for automobile heat shield |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066576A (en) * | 2007-04-30 | 2007-11-07 | 中铝瑞闽铝板带有限公司 | Aluminium foil base material producing process |
| CN101289719A (en) * | 2007-04-19 | 2008-10-22 | 南通华特铝热传输材料有限公司 | Automobile radiator composite brazing aluminum foil material and method for making same |
| CN103205608A (en) * | 2012-12-26 | 2013-07-17 | 江阴新仁科技有限公司 | Rare earth aluminum-manganese alloy foil used for aluminum honeycomb panel core and preparation method thereof |
| CN105890433A (en) * | 2016-04-25 | 2016-08-24 | 江苏金源腾峰换热设备有限公司 | Titanium alloy fin for thermometal air cooler and processing technology of titanium alloy fin |
| CN108138268A (en) * | 2015-10-15 | 2018-06-08 | 诺维尔里斯公司 | The multilayer aluminium alloy packaging of height forming |
| CN113005337A (en) * | 2021-03-17 | 2021-06-22 | 内蒙古联晟新能源材料有限公司 | Method for manufacturing container foil blank |
-
2021
- 2021-12-24 CN CN202111602571.9A patent/CN114318026A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289719A (en) * | 2007-04-19 | 2008-10-22 | 南通华特铝热传输材料有限公司 | Automobile radiator composite brazing aluminum foil material and method for making same |
| CN101066576A (en) * | 2007-04-30 | 2007-11-07 | 中铝瑞闽铝板带有限公司 | Aluminium foil base material producing process |
| CN103205608A (en) * | 2012-12-26 | 2013-07-17 | 江阴新仁科技有限公司 | Rare earth aluminum-manganese alloy foil used for aluminum honeycomb panel core and preparation method thereof |
| CN108138268A (en) * | 2015-10-15 | 2018-06-08 | 诺维尔里斯公司 | The multilayer aluminium alloy packaging of height forming |
| CN105890433A (en) * | 2016-04-25 | 2016-08-24 | 江苏金源腾峰换热设备有限公司 | Titanium alloy fin for thermometal air cooler and processing technology of titanium alloy fin |
| CN113005337A (en) * | 2021-03-17 | 2021-06-22 | 内蒙古联晟新能源材料有限公司 | Method for manufacturing container foil blank |
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Application publication date: 20220412 |