CN117026020A - Aluminum alloy ingot for producing integrated die casting by using recycled aluminum and production method thereof - Google Patents
Aluminum alloy ingot for producing integrated die casting by using recycled aluminum and production method thereof Download PDFInfo
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- CN117026020A CN117026020A CN202310955963.6A CN202310955963A CN117026020A CN 117026020 A CN117026020 A CN 117026020A CN 202310955963 A CN202310955963 A CN 202310955963A CN 117026020 A CN117026020 A CN 117026020A
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 60
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000004512 die casting Methods 0.000 title claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 44
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 42
- 238000007670 refining Methods 0.000 claims abstract description 23
- 238000005266 casting Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 10
- ZGUQGPFMMTZGBQ-UHFFFAOYSA-N [Al].[Al].[Zr] Chemical compound [Al].[Al].[Zr] ZGUQGPFMMTZGBQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- DJPURDPSZFLWGC-UHFFFAOYSA-N alumanylidyneborane Chemical compound [Al]#B DJPURDPSZFLWGC-UHFFFAOYSA-N 0.000 claims abstract description 6
- UNQHSZOIUSRWHT-UHFFFAOYSA-N aluminum molybdenum Chemical compound [Al].[Mo] UNQHSZOIUSRWHT-UHFFFAOYSA-N 0.000 claims abstract description 6
- -1 aluminum-manganese Chemical compound 0.000 claims abstract description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- 238000003892 spreading Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 9
- 238000007872 degassing Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 229910052691 Erbium Inorganic materials 0.000 claims description 2
- YNDGDLJDSBUSEI-UHFFFAOYSA-N aluminum strontium Chemical compound [Al].[Sr] YNDGDLJDSBUSEI-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- 238000012946 outsourcing Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 25
- 239000000047 product Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 241000243321 Cnidaria Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- 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
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses an aluminum alloy ingot for producing integrated die casting by using reclaimed aluminum and a production method thereof, belonging to the technical field of aluminum alloy. The aluminum alloy ingot production method comprises the following steps: (1) charging: spreading industrial silicon at the bottom of a smelting furnace, baking, adding waste aluminum materials into the smelting furnace to be melted into aluminum liquid, and adding aluminum-manganese intermediate alloy, aluminum-zirconium intermediate alloy, aluminum-molybdenum intermediate alloy, aluminum-boron intermediate alloy and aluminum-rare earth intermediate alloy into the aluminum liquid to be sufficiently melted; (2) refining: refining at 720-760 deg.C for 30-45min; (3) casting: casting at 720-760 ℃. The yield strength of the prepared aluminum alloy casting ingot is 130-150MPa, the tensile strength is 250-280MPa, the elongation is 10-14%, and the Fe content is below 0.15 wt.%.
Description
Technical Field
The invention relates to the technical field of aluminum alloy, in particular to an aluminum alloy ingot for producing integrated die casting by using reclaimed aluminum and a production method thereof.
Background
The aluminum alloy has the characteristics of energy conservation, environment friendliness, light weight, good corrosion resistance, long service life and the like, and is a preferred material for light weight (especially for new energy automobiles) of the existing automobiles. The Tesla integrated die-casting technology is a mainstream technology for manufacturing new energy automobile parts in the future, and a cast aluminum alloy ingot with low cost and high performance is required to be used as a base material of the cast aluminum alloy ingot to be matched with the development of the technology.
The energy of each ton of regenerated aluminum is saved by more than 3000kg of standard coal than that of electrolytic aluminum, and the energy can be saved by 20m 3 Reducing solid waste discharge by 20 tons and regenerating aluminum CO 2 The emission is only 2.1% of that of electrolytic aluminum, so that the regenerated aluminum is used for producing the heat treatment-free aluminum alloy material for automobiles, and the heat treatment-free aluminum alloy material is an ideal low-carbon and low-cost production mode.
The statistical results of the common secondary aluminum chemistry are shown in table 1 below.
TABLE 1
The regenerated aluminum has the characteristics of multiple types and impurity components, and the problem of component exceeding is frequently caused in the smelting process. Particularly, the enrichment of Fe element greatly limits the application of the regenerated aluminum. Fe easily forms a coarse needle-shaped phase in the as-cast aluminum alloy and easily causes cracking in the subsequent die casting, so that the Fe content control becomes a key technology for producing the heat-treatment-free aluminum alloy for the fields of automobiles and the like by using the regenerated aluminum.
The technical means for solving the problem of exceeding Fe content commonly used in the regenerated aluminum casting industry is as follows: 1) The regenerated aluminum is mixed with the original aluminum liquid to achieve the purpose of dilution, and the Fe element is reduced to be within an acceptable range, so that the treatment scheme has higher cost. 2) Mn, cr and other elements are added, then the iron phase morphology is controlled by controlling the modes of the superheat degree, the cooling speed and the like of the melt, the production process of the scheme is generally complex and is not suitable for mass industrialized production, the added elements do not increase the production cost, but the Fe content in the aluminum alloy is not reduced, the total amount of hard brittle compounds is increased, and the aluminum scrap is more difficult to regenerate by adding the elements as an impurity into aluminum continuously and accumulating the impurities. 3) And the physical methods such as a gravity sedimentation method, a centrifugal removal method, a filtering method, an electromagnetic separation method and the like are adopted, part of Fe is removed by utilizing the physical property difference of the iron-containing phase, other elements such as Mn and the like are also required to be introduced in the method, the relevance between the final Fe removal efficiency and the initial Fe content is large, and the Fe is difficult to continue to be removed after reaching a certain value.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an aluminum alloy ingot for producing integrated die casting by using reclaimed aluminum and a production method thereof, wherein the Fe content in the produced heat-treatment-free aluminum alloy can be controlled below 0.15wt.%, and the product performance is good and stable by component design and combination of production processes; the addition proportion of the regenerated aluminum can reach 100%, the production mode is low-carbon and energy-saving, and the method is suitable for mass industrialized production application.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the aluminum alloy ingot for producing integrated die casting by using the regenerated aluminum comprises the following chemical components in percentage by weight:
fe is less than or equal to 0.2 percent, si:7.0-10.0%, cu is less than or equal to 2.0%, mg:0.2-0.5%, mn:0.3-0.7%, sr:0.02-0.05%, mo:0.04-0.10%, RE:0.05-0.15%, zr:0.05-0.25%, B:0.03-0.06%, zn less than or equal to 1.0%, other single elements less than or equal to 0.05%, other elements less than or equal to 0.15% and the balance of Al.
The production method of the aluminum alloy ingot for producing integrated die casting by using the reclaimed aluminum comprises the following steps:
(1) Feeding: spreading industrial silicon at the bottom of a smelting furnace, baking at 790-810 ℃ for 15-30min, crushing, sieving, magnetically separating, preheating and depainting outsourcing the sorted waste aluminum materials, adding the waste aluminum materials into the smelting furnace, melting the waste aluminum materials into aluminum liquid, and adding the calculated and weighed aluminum-manganese intermediate alloy, aluminum-zirconium intermediate alloy, aluminum-molybdenum intermediate alloy, aluminum-boron intermediate alloy and aluminum-rare earth intermediate alloy into the aluminum liquid for full melting;
(2) Refining: refining at 720-760 ℃ for 30-45min by adopting inert gas current carrying refining agent (remelting type refining agent such as MK4844B, MK4844B in YS/T491-2020 standard) and standing for 30-40min after refining is finished, and removing surface slag;
(3) Casting: casting can be carried out at the temperature ranging from 720 ℃ to 760 ℃ after the components of the alloy liquid meet the requirements; adding AlSr10 intermediate alloy at the furnace hole by adopting on-line wire feeding, then carrying out gas removal and deslagging on aluminum liquid by on-line refining degassing equipment (the degassing efficiency is more than 50%) and double-stage plate type filtering equipment (the specification of a filter plate is 40ppi or more), and finally ensuring that the aluminum liquid enters an ingot casting machine at 680-700 ℃ to produce aluminum alloy casting ingots.
In the step (1), in the chemical composition of the waste aluminum material, fe is less than or equal to 0.5wt.%, cu is less than or equal to 2.0wt.%, and Zn is less than or equal to 1.0wt.%.
In the step (2), the aluminum-manganese intermediate alloy is AlMn20, the aluminum-strontium intermediate alloy is rolled AlSr10, the aluminum-zirconium intermediate alloy is AlZr10, the aluminum-molybdenum intermediate alloy is AlMo10, the aluminum-boron intermediate alloy is AlB5, the aluminum-rare earth intermediate alloy is AlRE10, and RE is one or more of La, ce and Er.
The prepared aluminum alloy casting ingot has the following properties: the yield strength is 130-150MPa, the tensile strength is 250-280MPa, and the elongation is 10-14%.
The design principle and the beneficial effects of the invention are as follows:
the invention mainly describes a production method for producing a heat-treatment-free aluminum alloy ingot by adopting reclaimed aluminum, which mainly has the innovation points that a form that a compound formed by main harmful element Fe in the reclaimed aluminum is settled at the bottom of a furnace is removed by boride treatment, so that the Fe content of a product is greatly reduced, and meanwhile, the product is matched with the refining, deterioration and strengthening effects of other alloy elements, so that the final product has excellent comprehensive mechanical properties, and has the main beneficial effects as follows:
1. the method adopts 100% of recycled aluminum raw materials for production, has low carbon and low cost, is simple and easy to operate, and is suitable for mass stable production.
2. Si content is 7-10%, and the excellent mold filling capability of the alloy in the die casting process is ensured.
3. Sr is used as a long-acting modifier, and eutectic Si in a lamellar or lath shape is changed into coral shape or spherical shape, so that the ductility of the alloy is enhanced.
4. The Fe content is controlled below 0.2%, so that the harm of Fe relative performance is reduced.
5. Mn element replaces Fe element to improve anti-sticking performance on one hand, and reduces harm of residual Fe to mechanical property on the other hand.
6. After the B element is added, the B element can firstly react with Fe to form Fe with larger density 2 The content of Fe in the regenerated aluminum is obviously reduced by settling the compound B to the furnace bottom, and the rest B provides a heterogeneous nucleation core through eutectic reaction in the casting process, so that the effects of refining grains and improving the product performance are achieved.
7. Mo element is dissolved in the body to increase the strength of the body and avoid generating a coarse second phase.
8. RE has the effect of removing (solid) hydrogen and refining, can reduce casting pinholes, has the effect of modifying Si, changes eutectic silicon from coarse needle sheets into short rod shapes, and improves the comprehensive performance of castings.
9. Mg forms Mg with Si 2 Si strengthening phase to increase alloy strength by natural aging.
10. Zr can refine grain structure, improve alloy heat resistance, and ensure mechanical property of the product at high temperature.
Detailed Description
For a further understanding of the present invention, the present invention is described below with reference to the following examples, which are intended to illustrate only the features and advantages of the present invention and are not intended to limit the scope of the claims of the present invention.
Example 1:
the embodiment is an aluminum alloy ingot for producing integrated die casting by using reclaimed aluminum and a production process thereof, wherein the production process of the aluminum alloy ingot is designed as follows:
1. the composition ratio of the final aluminum alloy ingot product is designed as follows: fe is less than or equal to 0.2 percent, si:7.0-10.0%, cu is less than or equal to 2.0%, mg:0.2-0.5%, mn:0.3-0.7%, sr:0.02-0.05%, mo:0.04-0.10%, RE:0.05-0.15%, zr:0.05-0.25%, B:0.03-0.06%, zn is less than or equal to 1.0%, the content of other single elements is less than or equal to 0.05%, and the total content of other elements is less than or equal to 0.15%. The balance being Al.
2. The equipment requirements are as follows: the main equipment is a crusher, a separator, a paint removing furnace, a smelting furnace, an ingot casting machine and an online wire feeder, and is provided with online refining equipment with the degassing efficiency of more than 50 percent and double-stage filtering equipment with the filter plate specification of more than or equal to 40 ppi.
3. The raw materials for production are shown in Table 2:
TABLE 2
4. The production process comprises the following steps:
spreading industrial silicon on the bottom of a smelting furnace, heating to 800 ℃ and baking for 20min, crushing and screening waste aluminum materials (waste aluminum wires, conducting plates, old aluminum foils, pop cans and automobile hub waste aluminum), preheating and depainting, adding the waste aluminum materials into the smelting furnace, sampling and analyzing that the Fe content is 0.39wt.% after the waste aluminum materials are melted, adding the calculated and weighed aluminum-manganese intermediate alloy, aluminum-zirconium intermediate alloy, aluminum-molybdenum intermediate alloy, magnesium ingots, aluminum-boron intermediate alloy and aluminum-rare earth intermediate alloy into aluminum liquid, and fully melting.
Refining: refining at 720-760 ℃ for 30-45min by adopting inert gas current carrying refining agent (MK 4844B type refining agent in YS/T491-2020 standard)), standing for 30-40min after refining, and removing the slag on the surface. The sampling analysis components are as follows: fe:0.14%, si:9.1%, cu:0.07%, mg:0.37%, mn:0.42%, mo:0.06%, la:0.04%, ce:0.02%, zr:0.09%, B:0.03%, zn:0.13%.
Casting: and (3) opening a furnace hole at 740 ℃ to start casting, adding an AlSr10 intermediate alloy with the Sr content of 0.036wt.% by adopting an online wire feeding at the outlet of the furnace hole, then carrying out degassing and deslagging on aluminum liquid by sequentially passing through an online refining degassing device and a two-stage plate type filtering device (the specification of a filter plate is 30ppi+50 ppi), and finally, feeding the aluminum liquid into an ingot casting machine at 685 ℃ to produce an aluminum alloy casting ingot.
And (3) checking the performance of the product: yield strength 148MPa, tensile strength 276MPa and elongation 12%.
Claims (5)
1. An aluminum alloy ingot for producing integrated die casting by using reclaimed aluminum is characterized in that: the aluminum alloy comprises the following chemical components in percentage by weight:
fe is less than or equal to 0.2 percent, si:7.0-10.0%, cu is less than or equal to 2.0%, mg:0.2-0.5%, mn:0.3-0.7%, sr:0.02-0.05%, mo:0.04-0.10%, RE:0.05-0.15%, zr:0.05-0.25%, B:0.03-0.06%, zn less than or equal to 1.0%, other single elements less than or equal to 0.05%, other elements less than or equal to 0.15% and the balance of Al.
2. The method for producing an aluminum alloy ingot for integrated die casting from recycled aluminum according to claim 1, wherein: the method comprises the following steps:
(1) Feeding: spreading industrial silicon at the bottom of a smelting furnace, baking at 790-810 ℃ for 15-30min, crushing, sieving, magnetically separating, preheating and depainting outsourcing the sorted waste aluminum materials, adding the waste aluminum materials into the smelting furnace, melting the waste aluminum materials into aluminum liquid, and adding the calculated and weighed aluminum-manganese intermediate alloy, aluminum-zirconium intermediate alloy, aluminum-molybdenum intermediate alloy, aluminum-boron intermediate alloy and aluminum-rare earth intermediate alloy into the aluminum liquid for full melting;
(2) Refining: refining at 720-760 ℃ for 30-45min by adopting inert gas current carrying refining agent, and after refining, standing for 30-40min, removing the slag on the surface;
(3) Casting: casting can be carried out at the temperature ranging from 720 ℃ to 760 ℃ after the components of the alloy liquid meet the requirements; adding AlSr10 intermediate alloy at the furnace hole by adopting on-line wire feeding, then carrying out gas removal and deslagging on aluminum liquid by on-line refining degassing equipment (the degassing efficiency is more than 50%) and double-stage plate type filtering equipment (the specification of a filter plate is 40ppi or more), and finally ensuring that the aluminum liquid enters an ingot casting machine at 680-700 ℃ to produce aluminum alloy casting ingots.
3. The method for producing an aluminum alloy ingot for integrated die casting from recycled aluminum according to claim 2, wherein: in the step (1), in the chemical composition of the waste aluminum material, fe is less than or equal to 0.5wt.%, cu is less than or equal to 2.0wt.%, and Zn is less than or equal to 1.0wt.%.
4. The method for producing an aluminum alloy ingot for integrated die casting from recycled aluminum according to claim 2, wherein: in the step (2), the aluminum-manganese intermediate alloy is AlMn20, the aluminum-strontium intermediate alloy is rolled AlSr10, the aluminum-zirconium intermediate alloy is AlZr10, the aluminum-molybdenum intermediate alloy is AlMo10, the aluminum-boron intermediate alloy is AlB5, the aluminum-rare earth intermediate alloy is AlRE10, and RE is one or more of La, ce and Er.
5. The method for producing an aluminum alloy ingot for integrated die casting from recycled aluminum according to claim 1, wherein: the prepared aluminum alloy casting ingot has the following properties: the yield strength is 130-150MPa, the tensile strength is 250-280MPa, and the elongation is 10-14%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117821813A (en) * | 2024-03-04 | 2024-04-05 | 鸿劲新材料研究(南通)有限公司 | Aluminum alloy material for auxiliary frame of automobile and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117821813A (en) * | 2024-03-04 | 2024-04-05 | 鸿劲新材料研究(南通)有限公司 | Aluminum alloy material for auxiliary frame of automobile and preparation method |
| CN117821813B (en) * | 2024-03-04 | 2024-04-26 | 鸿劲新材料研究(南通)有限公司 | Aluminum alloy material for auxiliary frame of automobile and preparation method |
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