CN114645150A - Production method of green circulating grade-preserving 5-series high-strength automobile plate - Google Patents
Production method of green circulating grade-preserving 5-series high-strength automobile plate Download PDFInfo
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- CN114645150A CN114645150A CN202210124455.9A CN202210124455A CN114645150A CN 114645150 A CN114645150 A CN 114645150A CN 202210124455 A CN202210124455 A CN 202210124455A CN 114645150 A CN114645150 A CN 114645150A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000002699 waste material Substances 0.000 claims abstract description 36
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 31
- 238000003723 Smelting Methods 0.000 claims abstract description 21
- 238000005266 casting Methods 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000003801 milling Methods 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 238000007670 refining Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000007872 degassing Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000005098 hot rolling Methods 0.000 claims abstract description 7
- 238000004321 preservation Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000005097 cold rolling Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 13
- 239000002516 radical scavenger Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002893 slag Substances 0.000 description 6
- 230000003749 cleanliness Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000004512 die casting Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A production method of a green circulating grade-preserving 5-series high-strength automobile plate comprises the following steps: the method comprises the following steps: adding the recycled high-strength 5-series automobile sheet waste into a waste treatment system for melting; step two: the element remover is used for reducing the high content of elements in the alloy at least to the upper limit of the process requirement; step three: transferring the molten aluminum melted by the waste treatment system into a smelting furnace, and carrying out alloy proportioning by the smelting furnace according to components; step four: transferring the qualified aluminum liquid into heat preservation for refining; step five: carrying out on-line deslagging, degassing and filtering treatment, and casting a large flat ingot; step six: milling eight surfaces of a large flat ingot; step seven: homogenizing the large flat ingot; step eight: hot rolling to 3-10 mm, and cold rolling to 1.0-3.0 mm; step nine: and (4) carrying out heat treatment at the temperature of 430-530 ℃, and carrying out air cooling to room temperature to obtain a finished product. The invention recycles the waste aluminum recovered by the main engine plant, so that the recovered waste automobile plate can be effectively recycled in a green recycling manner, and simultaneously, more economic and social benefits are brought to enterprises.
Description
Technical Field
The invention belongs to the field of automobile plate production in aluminum processing industry, and particularly relates to a method for producing a green circulating grade-preserving 5-series high-strength automobile plate.
Background
In order to respond to the national carbon reduction plan, domestic automobile plate aluminum processing enterprises do not recycle automobile plate aluminum scraps, and an automobile host factory packs the used aluminum scraps to be sold to general aluminum scrap recycling enterprises at a low price, so that the original automobile plate alloy is degraded to be used for die castings, and the used aluminum scraps of the automobile plates are not really and effectively recycled.
Disclosure of Invention
The invention provides a production method of a green circulating grade-preserving 5-series high-strength automobile plate, which is used for overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
a production method of a green circulating grade-preserving 5-series high-strength automobile plate comprises the following steps:
the method comprises the following steps: adding the recycled high-strength 5-series automobile sheet waste into a waste treatment system for melting, wherein the melting temperature is 685-765 ℃, and sampling and detecting chemical components after melting;
step two: according to the result of the detected chemical composition, an element remover is used for reducing the high content of elements in the alloy to at least the upper limit of the process requirement;
step three: transferring molten aluminum melted by the waste treatment system into a smelting furnace according to a charging proportion of 60-90%, carrying out alloy proportioning on the smelting furnace according to the components of the high-strength 5-series automobile plate, and controlling the smelting temperature to be 685-765 ℃;
step four: and (3) refining the qualified aluminum liquid in a heat preservation way at the refining temperature of 700-760 ℃ for 20-90 min.
Step five: carrying out online deslagging, degassing and filtering treatment, and casting a large flat ingot at the casting temperature of 650-710 ℃ and the casting speed of 45-60 mm/min;
step six: milling the large flat ingot into eight surfaces, wherein the milling amount of the large surface is 10-25 mm, and the milling amount of the small surface is 3-15 mm;
step seven: homogenizing the large flat ingot, wherein the homogenizing temperature is 530-590 ℃, and the heat preservation time is 3-15 h;
step eight: opening the furnace for rolling when the heating furnace is heated to 500 ℃, wherein the hot rolling finishing temperature is 320-400 ℃, the thickness is 3-10 mm, and the cold rolling is carried out to 1.0-3.0 mm;
step nine: heat-treating at 430-530 ℃ for 5-40 s, and air-cooling to room temperature to obtain the finished product.
The production method of the green cycle grade 5 series high-strength automobile sheet comprises the following steps of: firstly adding a high-melting-point element scavenger, and then adding a low-melting-point element scavenger.
The production method of the green cycle grade 5 series high-strength automobile sheet comprises the following steps of: the element scavenger is required to be added once when the waste aluminum is added once by the waste material treatment system, and the adding amount of the element scavenger is determined according to the detection content condition of each element of the batch of waste aluminum.
The production method of the green cycle grade 5-series high-strength automobile sheet is characterized by comprising the following steps of: the process requirements of the content of each element in the step two are as follows: 0-0.15% of Si; 0-0.35% of Fe; 0-0.12% of Cu; 0-0.50% of Mn; 0-5.0% of Mg; 0-0.05% of Cr; 0-0.05% of Zn; 0 to 0.05 percent of Ti.
The production method of the green cycle grade 5 series high-strength automobile sheet comprises the following components in percentage by weight: 0.04-0.15% of Si; 0.10-0.35% of Fe; 0.03-0.12% of Cu; 0.15-0.50% of Mn; 4.3-5.0% of Mg; 0.01-0.05% of Cr; 0.01-0.05% of Zn; 0.01 to 0.05 percent of Ti.
The production method of the green cycle grade 5-series high-strength automobile sheet comprises the following main components:
the invention has the advantages that: the invention recycles the waste aluminum recovered by the main factory, the traditional production process directly adds the recovered waste aluminum into the smelting furnace, the production process classifies the recovered 5-series high-strength alloy for use, and then carries out impurity removal process treatment by the special waste treatment smelting furnace, so that the alloy components meet the process requirements and then are produced by the smelting furnace through a converter, namely smelting, refining, online degassing and deslagging, filtering, casting, hot rolling, cold rolling and continuous annealing. The recovered waste automobile plates are produced according to 60%, 90% and 90% of the charging amount of the recovered waste materials of the main engine plant and 10% of the self-produced waste aluminum, and all indexes of the produced automobile plates meet the use requirements of the main engine plant. The recovered waste automobile plates can be effectively recycled and used in a green and recycling manner, and more economic and social benefits are brought to enterprises.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a performance test report for example 1 of the present invention;
FIG. 2 is a report of performance test of example 2 of the present invention;
fig. 3 is a performance test report of embodiment 3 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
1.1 adding the recycled high-strength 5-series automobile sheet waste into a waste treatment system at 750 ℃ for melting, wherein the mass ratio of the chemical components detected after melting is as follows: si, 0.14%; 0.32 percent of Fe; 0.09% of Cu; mn, 0.43%; 4.9 percent of Mg; 0.008% of Cr; 0.006% of Zn; 0.013 percent of Ti.
1.2 adding the qualified recycled aluminum water in the waste treatment system into a 750 ℃ smelting furnace according to the charging amount of 60 percent and melting the recycled aluminum water together with electrolytic aluminum water, a re-melted ingot and an intermediate alloy in a proportion of 40 percent. And an electromagnetic stirrer is used to achieve the uniformity of chemical components in the smelting furnace. The chemical components in mass ratio are as follows: 0.10 percent of Si; 0.30 percent of Fe; 0.06% of Cu; 0.38% of Mn; 4.6 percent of Mg; 0.009% of Cr; 0.007% of Zn; 0.016 percent of Ti.
1.3, the molten aluminum in the smelting furnace is transferred to a holding furnace at 740 ℃ for refining for 35 minutes, and the processes of online deslagging, degassing and filtering are carried out.
1.3.1 slag content
1.3.2 the slag content is one of indexes for measuring the quality and cleanliness of the melt, and the actual detection meets the process requirements.
1.4 casting machine casting was carried out at 685 ℃ casting temperature and 50mm/min speed.
1.5 milling the large surface of a large flat ingot by 20mm, milling the small surface by 3mm, preserving the heat in a heating furnace at 510 ℃ for 5 hours, opening the furnace for rolling at 500 ℃, and performing hot rolling at the final rolling temperature of 300 ℃ and the thickness of 4.0 mm.
1.6 the thickness of the cold rolled finished product is 1.0mm, the heat treatment is carried out for 13s at 500 ℃, and the finished product is obtained after air cooling.
Example 2
2.1 adding the recycled high-strength 5-series automobile sheet waste into a waste treatment system at 750 ℃ for melting, wherein the mass ratio of the chemical components detected after melting is as follows: si, 0.13%; 0.34 percent of Fe; 0.07% of Cu; 0.40 percent of Mn; mg, 4.7%; 0.007% of Cr; 0.005% of Zn; ti, 0.012%.
2.2 adding the molten recycled aluminum water in the waste treatment system into a 750 ℃ smelting furnace according to 90 percent of charging amount and melting the molten recycled aluminum water, the remelted ingot and the master alloy together with 10 percent of electrolytic aluminum water. And an electromagnetic stirrer is used to achieve the uniformity of chemical components in the smelting furnace. The chemical components in mass ratio are as follows: 0.12% of Si; 0.33 percent of Fe; 0.08 percent of Cu; 0.42 percent of Mn; 4.8 percent of Mg; 0.008% of Cr; 0.007% of Zn; 0.015% of Ti.
2.3, the molten aluminum in the smelting furnace is transferred to a 745 ℃ heat preservation furnace for refining for 45 minutes, and the processes of online deslagging, degassing and filtering are carried out.
2.3.1 slag content
2.3.2 the slag content is one of the standards for measuring the quality and cleanliness of the melt, and the actual detection meets the process requirements.
2.4 casting machine casting was carried out at 685 ℃ casting temperature and 55mm/min speed.
2.5 milling the large surface of the large flat ingot by 20mm, milling the small surface by 3mm, preserving the heat in a heating furnace at 520 ℃ for 5 hours, opening the furnace at 510 ℃ for rolling, and performing hot rolling at the final rolling temperature of 320 ℃ to obtain the large flat ingot with the thickness of 8.5 mm.
2.6 the thickness of the cold rolled finished product is 2.0mm, the heat treatment is carried out for 22s at 505 ℃, and the finished product is obtained after air cooling.
Example 3
3.1 adding the recycled high-strength 5-series automobile sheet waste into a waste treatment system at 750 ℃ for melting, wherein the mass ratio of the chemical components detected after melting is as follows: si, 0.13%; 0.31 percent of Fe; 0.08 percent of Cu; 0.41 percent of Mn; 4.8 percent of Mg; 0.006 percent of Cr; 0.007% of Zn; 0.014% of Ti.
3.2 adding 90% of the molten recycled aluminum water in the waste treatment system into a 750 ℃ smelting furnace and melting the molten recycled aluminum water together with 10% of other alloy self-produced waste. And an electromagnetic stirrer is used to achieve the uniformity of chemical components in the smelting furnace. The chemical components in mass ratio are as follows: si, 0.14%; 0.34 percent of Fe; 0.11 percent of Cu; 0.48 percent of Mn; mg, 4.9%; 0.007% of Cr; 0.008% of Zn; 0.016 percent of Ti.
3.3, transferring the molten aluminum in the smelting furnace to a heat preservation furnace at 750 ℃ for refining for 60 minutes, and performing online deslagging, degassing and filtering treatment.
3.3.1 slag content
3.3.2 the slag content is one of the standards for measuring the quality and cleanliness of the melt, and the actual detection meets the process requirements.
3.4 casting machine casting was carried out at 685 ℃ casting temperature and 58mm/min speed.
3.5 milling the large surface of the large flat ingot by 20mm, milling the small surface by 3mm, preserving the heat of 550 ℃ in a heating furnace for 5 hours, opening the furnace for rolling at 530 ℃, and performing hot rolling at the final rolling temperature of 330 ℃ to obtain the large flat ingot with the thickness of 9.5 mm.
3.6 the thickness of the cold rolled finished product is 3.0mm, the heat treatment is carried out for 28s at 510 ℃, and the finished product is obtained after air cooling.
Fig. 1 to 3 are correlation performance detection reports of examples 1 to 3, and it can be known from the correlation performance detection reports of examples 1 to 3 that the performance of the 5-series high-strength automobile panel prepared in examples 1 to 3 reaches the standard, so that the recycling protection of the 5-series high-strength waste automobile panel of the host factory to the field of automobile panels is realized, the waste automobile panel is not degraded to be used in a die casting, the emission of CO2 can be reduced, the low emission or zero emission is really realized, and the green high-efficiency recycling economy is realized.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A production method of a green circulating grade-preserving 5-series high-strength automobile plate is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: adding the recycled high-strength 5-series automobile sheet waste into a waste treatment system for melting, wherein the melting temperature is 685-765 ℃, and sampling and detecting chemical components after melting;
step two: according to the result of the detected chemical composition, an element remover is used for reducing the high content of elements in the alloy at least to the upper limit of the process requirement;
step three: transferring molten aluminum melted by the waste treatment system into a smelting furnace according to a charging proportion of 60-90%, wherein the smelting furnace carries out alloy proportioning according to the components of a high-strength 5-system automobile plate, and the smelting temperature is 685-765 ℃;
step four: transferring the qualified aluminum liquid into a heat preservation tank for refining, wherein the refining temperature is 700-760 ℃, and the refining time is 20-90 min;
step five: carrying out online deslagging, degassing and filtering treatment, and casting a large flat ingot at the casting temperature of 650-710 ℃ and the casting speed of 45-60 mm/min;
step six: milling the large flat ingot into eight surfaces, wherein the milling amount of the large surface is 10-25 mm, and the milling amount of the small surface is 3-15 mm;
step seven: homogenizing the large flat ingot, wherein the homogenizing temperature is 530-590 ℃, and the heat preservation time is 3-15 h;
step eight: opening the furnace for rolling when the heating furnace is heated to 500 ℃, wherein the hot rolling finishing temperature is 320-400 ℃, the thickness is 3-10 mm, and the cold rolling is carried out to 1.0-3.0 mm;
step nine: heat-treating at 430-530 ℃ for 5-40 s, and air-cooling to room temperature to obtain the finished product.
2. The method for producing a green cycle grade 5 series high strength automobile sheet according to claim 1, wherein: the use sequence of the element scavenger in the second step is as follows: firstly adding a high-melting-point element scavenger, and then adding a low-melting-point element scavenger.
3. The method for producing a green cycle grade 5 series high strength automobile sheet according to claim 1, wherein: the usage amount of the element scavenger in the second step is as follows: the element scavenger is required to be added once when the waste aluminum is added once by the waste material treatment system, and the adding amount of the element scavenger is determined according to the detection content condition of each element of the batch of waste aluminum.
4. The method for producing a green cycle grade 5 series high strength automobile sheet according to claim 1, wherein: the process requirements of the content of each element in the step two are as follows: 0-0.15% of Si; 0-0.35% of Fe; 0-0.12% of Cu; 0-0.50% of Mn; 0-5.0% of Mg; 0-0.05% of Cr; 0-0.05% of Zn; 0 to 0.05 percent of Ti.
5. The method for producing a green cycle grade 5 series high strength automobile sheet according to claim 1, wherein: the high-strength 5-series automobile sheet in the third step comprises the following elements in percentage by weight: 0.04-0.15% of Si; 0.10-0.35% of Fe; 0.03-0.12% of Cu; 0.15-0.50% of Mn; 4.3-5.0% of Mg; 0.01-0.05% of Cr; 0.01-0.05% of Zn; 0.01 to 0.05 percent of Ti.
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| CN202210124455.9A CN114645150A (en) | 2022-02-10 | 2022-02-10 | Production method of green circulating grade-preserving 5-series high-strength automobile plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319413A (en) * | 2022-08-17 | 2022-11-11 | 山东南山铝业股份有限公司 | Production method of circulating grade-keeping 5-series beverage bottom cover material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001032057A (en) * | 1999-07-23 | 2001-02-06 | Mitsubishi Alum Co Ltd | Production of aluminum alloy sheet for can end excellent in blowup resistance |
| JP2001073058A (en) * | 1999-07-01 | 2001-03-21 | Mitsubishi Alum Co Ltd | Aluminum alloy sheet for can end excellent in blowup resistance and its production |
| CN103740947A (en) * | 2014-01-02 | 2014-04-23 | 常熟理工学院 | Method for removing iron and silicon impurities during regeneration of aluminum scraps |
| CN108754239A (en) * | 2018-05-31 | 2018-11-06 | 乳源东阳光优艾希杰精箔有限公司 | A kind of preparation method of automobile exhaust system heat transmission aluminium alloy |
| CN109988948A (en) * | 2019-04-26 | 2019-07-09 | 郑州明泰实业有限公司 | A kind of car inner plate 5182-O state aluminium alloy boards and its production method |
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2022
- 2022-02-10 CN CN202210124455.9A patent/CN114645150A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001073058A (en) * | 1999-07-01 | 2001-03-21 | Mitsubishi Alum Co Ltd | Aluminum alloy sheet for can end excellent in blowup resistance and its production |
| JP2001032057A (en) * | 1999-07-23 | 2001-02-06 | Mitsubishi Alum Co Ltd | Production of aluminum alloy sheet for can end excellent in blowup resistance |
| CN103740947A (en) * | 2014-01-02 | 2014-04-23 | 常熟理工学院 | Method for removing iron and silicon impurities during regeneration of aluminum scraps |
| CN108754239A (en) * | 2018-05-31 | 2018-11-06 | 乳源东阳光优艾希杰精箔有限公司 | A kind of preparation method of automobile exhaust system heat transmission aluminium alloy |
| CN109988948A (en) * | 2019-04-26 | 2019-07-09 | 郑州明泰实业有限公司 | A kind of car inner plate 5182-O state aluminium alloy boards and its production method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319413A (en) * | 2022-08-17 | 2022-11-11 | 山东南山铝业股份有限公司 | Production method of circulating grade-keeping 5-series beverage bottom cover material |
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