CN113444928A - High-strength aluminum alloy for heavy truck hub and preparation method thereof - Google Patents
High-strength aluminum alloy for heavy truck hub and preparation method thereof Download PDFInfo
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- CN113444928A CN113444928A CN202110819279.6A CN202110819279A CN113444928A CN 113444928 A CN113444928 A CN 113444928A CN 202110819279 A CN202110819279 A CN 202110819279A CN 113444928 A CN113444928 A CN 113444928A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/026—Alloys based on aluminium
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- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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Abstract
The invention relates to the technical field of aluminum alloy production, and relates to a high-strength aluminum alloy for heavy truck hubs and a preparation method thereof, wherein the high-strength aluminum alloy comprises raw materials of Si 5.5-6.2%, Mg0.25-0.40%, Ti0.12-0.17%, Fe0.02-0.10%, Sr0.10-0.16%, Cu0.04-0.75% and Te0.03-0.08%; heating and melting single impurity less than or equal to 0.05 percent, total impurity less than or equal to 0.15 percent and the balance of Al for primary refining; after the alloy components are qualified, continuously heating the aluminum liquid, and then transferring the aluminum liquid into a heat preservation furnace for heat preservation; and carrying out secondary refining and standing, online refining, degassing, filtering, casting, homogenizing, solution treatment, water-cooling quenching and artificial aging treatment to obtain a finished product. By optimizing the raw materials and the preparation method, the mechanical property and the surface quality of the aluminum alloy cast rod are improved, and the comprehensive performance is obviously improved.
Description
Technical Field
The invention relates to the technical field of aluminum alloy production, in particular to a high-strength aluminum alloy for heavy truck hubs and a preparation method thereof.
Background
The heavy truck is called heavy truck and semi-trailer tractor, and has higher bearing capacity compared with conventional small truck. The wheel hub is an important part of the heavy truck, the performance of the heavy truck is directly influenced by the quality of the wheel hub, and the aluminum alloy wheel hub is widely applied to the field of wheel hub manufacturing due to the advantages of light weight, high strength, good braking balance performance, high precision, good heat conductivity, low gasoline consumption and the like. However, the aluminum alloy for heavy truck hubs also has the problems of high safety performance requirement, high surface quality requirement and great difficulty in controlling uniformity of structural performance. The above problems are mainly caused by the composition of the raw materials and the unreasonable production process of the aluminum alloy. Therefore, in order to improve the surface quality and strength of the aluminum alloy hub, it is necessary to provide a high-strength aluminum alloy for heavy truck hubs and a preparation method thereof.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the high-strength aluminum alloy for the heavy truck hub and the preparation method thereof, through reasonable raw material matching cooperation and improvement on the preparation method, the mechanical property of an aluminum alloy cast rod is effectively improved, the problems of cracks, uneven distribution and the like are reduced, the surface quality is improved, and the comprehensive performance is obviously improved.
The invention provides a preparation method of a high-strength aluminum alloy for a heavy truck hub, which comprises the following steps:
(1) raw materials are subjected to Si 5.5-6.2%, Mg0.25-0.40%, Ti0.12-0.17%, Fe0.02-0.10%, Sr0.10-0.16%, Cu0.04-0.75% and Te0.03-0.08%; heating and melting single impurity less than or equal to 0.05 percent, total impurity less than or equal to 0.15 percent and the balance of Al for primary refining;
(2) adjusting alloy components, continuing to heat the aluminum liquid to 620-650 ℃ after the alloy components are qualified, and then transferring the aluminum liquid into a heat preservation furnace for heat preservation; carrying out secondary refining and standing;
(3) refining, degassing and filtering the aluminum liquid after standing on line;
(4) casting the filtered aluminum liquid and homogenizing;
(5) and performing solution treatment on the homogenized product at 510-520 ℃ for 20-30 s, and performing water-cooling quenching and artificial aging treatment to obtain an aluminum alloy cast rod finished product.
Preferably, the melting temperature in the step (1) is 590-610 ℃, and a forklift is adopted for stirring in the melting process, so that incomplete melting of the raw materials at the bottom is prevented. The melting temperature can ensure that all components in the raw materials are melted more thoroughly and more finely.
Preferably, the primary refining process in the step (1) adopts double-tube refining, the double-tube refining time is 10-15 min, and the temperature is 620-650 ℃. Preventing the raw material from solidifying or excessively melting.
Preferably, the secondary refining in the step (2) adopts double-tube refining, the double-tube refining time is 10-15 min, and the temperature is 620-650 ℃.
Preferably, the standing temperature in the step (2) is 620-630 ℃, and the standing time is 20-30 min.
Preferably, the step (3) filtration adopts double-stage filter plate filtration.
Preferably, the homogenization treatment in the step (4) is specifically two-stage gradient heating and cooling treatment, wherein the first-stage gradient heating is carried out until the temperature reaches 520 +/-5 ℃, the temperature is kept for 5-7 hours, and the second-stage gradient cooling is carried out until the temperature reaches 490 +/-5 ℃, and the temperature is kept for 2-3 hours; and then, carrying out secondary equal gradient temperature rise to 590 +/-5 ℃, carrying out heat preservation for 5-10 h, carrying out secondary equal gradient temperature drop to 520 +/-5 ℃, and carrying out heat preservation for 2-4 h. After twice equal-gradient temperature rise and fall treatment, the structural mechanical property is remarkably improved, elements such as Mg, Cu and the like can be fully diffused in crystal and in crystal boundary, and meanwhile, the thickness of a crystal layer is greatly reduced, and cracking is not easy to occur.
Preferably, the isocratic rate in the step (4) is 50-70 ℃/min. Further improving the uniformity and compactness of the tissue and having small internal stress.
Preferably, the primary cooling in the step (4) adopts air cooling and fog cooling, the steering frequency of a fan is 10-20 times/min, and the flow rate of water for the fog cooling is 35-50 m3The second-stage cooling only adopts water cooling, and the water flow is 15-20 m3H is used as the reference value. On the aspect of the external dimension of the product, the improper setting of the parameters can cause the phenomena of product lateral bending and twisting to increase the reject ratio of the product, and the error of the external dimension of the product produced in different batches is not more than +/-0.1 mm after the parameters are optimized.
Preferably, the heating temperature in the artificial aging process in the step (5) is 160-170 ℃, and the heat preservation time is 2-3 h.
The invention also provides the high-strength aluminum alloy for the heavy truck hub prepared by the preparation method.
The beneficial effect of the invention is that,
(1) according to the invention, through improving chemical components, the strength of the alloy is improved, meanwhile, the brittleness is not increased, the corrosion resistance is not reduced, and the mechanical property of the aluminum alloy cast rod is effectively improved; the material exerts the maximum potential by optimizing homogenization treatment and artificial aging process, not only improves the strength, but also makes the internal structure of the product more compact, solves the problem of unbalanced crystallization and makes the crystallization fine and uniform;
(2) through reasonable raw material matching cooperation and improvement on the preparation method, the mechanical property of the aluminum alloy cast rod is effectively improved, the problems of cracks, uneven distribution and the like are reduced, no flower and white spots occur after later-stage reprocessing, and the surface quality is improved; the comprehensive performance is obviously improved.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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
A preparation method of a high-strength aluminum alloy for heavy truck hubs comprises the following steps:
(1) raw materials are prepared according to the weight percentage of Si 5.5%, Mg0.27%, Ti0.127%, Fe0.027%, Sr0.13%, Cu0.042% and Te0.037%; heating single impurity less than or equal to 0.05 percent, total impurity less than or equal to 0.15 percent and the balance of Al to 595 ℃ for melting, stirring by a forklift to prevent incomplete melting of raw materials at the bottom, and performing primary refining by adopting double-tube refining at the temperature of 620 ℃ for 10 min;
(2) adjusting alloy components, continuing to heat the aluminum liquid to 625 ℃ after the alloy components are qualified, and then transferring the aluminum liquid into a heat preservation furnace for heat preservation; performing secondary refining, still adopting double-tube refining, wherein the time is 12min, and the temperature is 625 ℃; standing at 625 deg.C for 30 min;
(3) refining and degassing the aluminum liquid after standing on line, and filtering by a two-stage filter plate;
(4) casting the filtered aluminum liquid and homogenizing; the homogenization treatment adopts two-stage gradient heating and cooling treatment, wherein the temperature is increased and decreased in an equal gradient manner, and the heating and cooling speed is 50 ℃/min; the method specifically comprises the following steps: first-stage isocratic temperature rise to 520 ℃, heat preservation for 5.5 hours, then first-stage isocratic temperature drop to 490 ℃, heat preservation for 2.2 hours; then, the temperature is raised to 590 ℃ in a secondary equal gradient way, the temperature is kept for 5h, the temperature is lowered to 520 ℃ in a secondary equal gradient way, and the temperature is kept for 2 h; by twice passingAfter the isothermal cooling and heating treatment, the structural mechanical property is obviously improved, elements such as Mg, Cu and the like can be fully diffused in crystal and in crystal boundary, the uniformity and compactness of the structure are improved, the thickness of a crystal layer is greatly reduced, and the aluminum alloy cast rod is ensured not to crack easily; simultaneously, the primary cooling adopts air cooling and fog cooling, the steering frequency of a fan is 10 times/min, and the flow of water used for the fog cooling is 35m3The second-stage cooling only adopts water cooling with the water flow of 17m3/h；
(5) Carrying out solution treatment on the product after the homogenization treatment at 520 ℃ for 20s, and carrying out water spray cooling on the upper 90 percent and the lower 80 percent of cold water with 100 percent of strength; and performing manual working efficiency treatment at 160 ℃ for 2 hours to obtain the finished product of the aluminum alloy cast rod.
Example 2
A preparation method of a high-strength aluminum alloy for heavy truck hubs comprises the following steps:
(1) raw materials are prepared according to the weight percentage of Si 5.7%, Mg0.30%, Ti0.15%, Fe0.05%, Sr0.16%, Cu0.075% and Te0.07%; heating single impurity not more than 0.05%, total impurity not more than 0.15% and Al in balance to 610 ℃ for melting, stirring by a forklift to prevent incomplete melting of raw materials at the bottom, and performing primary refining by double-tube refining at the temperature of 630 ℃ for 15 min;
(2) adjusting alloy components, continuing to heat the aluminum liquid to 635 ℃ after the alloy components are qualified, and then transferring the aluminum liquid into a heat preservation furnace for heat preservation; performing secondary refining, and still adopting double-tube refining for 14min at 635 ℃; standing at 635 deg.C for 20 min;
(3) refining and degassing the aluminum liquid after standing on line, and filtering by a two-stage filter plate;
(4) casting the filtered aluminum liquid and homogenizing; the homogenization treatment adopts two-stage gradient heating and cooling treatment, wherein the temperature is increased and decreased in an equal gradient way, and the heating and cooling speed is 70 ℃/min; the method specifically comprises the following steps: first-stage isocratic temperature rise to 525 ℃, heat preservation for 5.5h, then first-stage isocratic temperature drop to 495 ℃, heat preservation for 2.2 h; then, the temperature is increased to 595 ℃ in a secondary equal gradient way, the temperature is kept for 5h, and then the temperature is decreased to 525 ℃ in a secondary equal gradient way, and the temperature is kept for 2 h; after twice equal-gradient temperature rise and fall treatment, the structural mechanical property is obviously improved, and M isg. Cu and other elements can be fully diffused in the crystal and the crystal boundary, so that the uniformity and compactness of the structure are improved, the thickness of the crystal layer is greatly reduced, and the aluminum alloy cast rod is ensured not to crack easily; simultaneously, the primary cooling adopts air cooling and fog cooling, the steering frequency of a fan is 10 times/min, and the flow of water used for the fog cooling is 50m3The second-stage cooling only adopts water cooling with water flow of 20m3/h；
(5) Carrying out solution treatment on the product after the homogenization treatment at 510 ℃ for 30s, and carrying out water spray cooling on the upper 90% and lower 80% of cold water with 100% strength; and performing manual working efficiency treatment at 170 ℃ for 2 hours to obtain the finished product of the aluminum alloy cast rod.
Example 3
A preparation method of a high-strength aluminum alloy for heavy truck hubs comprises the following steps:
(1) raw materials are prepared according to the weight percentage of Si 6.0%, Mg0.27%, Ti0.15%, Fe0.05%, Sr0.15%, Cu0.06% and Te0.05%; heating single impurity not more than 0.05%, total impurity not more than 0.15% and Al in balance to 600 ℃ for melting, stirring by a forklift to prevent incomplete melting of the raw material at the bottom, and refining for one time by double-tube refining at the temperature of 620 ℃ for 10 min;
(2) adjusting alloy components, continuing to heat the aluminum liquid to 625 ℃ after the alloy components are qualified, and then transferring the aluminum liquid into a heat preservation furnace for heat preservation; performing secondary refining, still adopting double-tube refining, wherein the time is 12min, and the temperature is 625 ℃; standing at 625 deg.C for 30 min;
(3) refining and degassing the aluminum liquid after standing on line, and filtering by a two-stage filter plate;
(4) casting the filtered aluminum liquid and homogenizing; the homogenization treatment adopts two-stage gradient heating and cooling treatment, wherein the temperature is increased and decreased in an equal gradient manner, and the heating and cooling speed is 55 ℃/min; the method specifically comprises the following steps: first-stage isocratic temperature rise to 520 ℃, heat preservation for 5h, then first-stage isocratic temperature drop to 490 ℃, heat preservation for 2 h; then, the temperature is raised to 590 ℃ in a secondary equal gradient way, the temperature is kept for 8h, the temperature is lowered to 520 ℃ in a secondary equal gradient way, and the temperature is kept for 2 h; after twice equal-gradient temperature rise and fall treatment, the structural mechanical property is obviously improved, elements such as Mg, Cu and the like can be fully diffused in crystal and crystal boundary, and the uniformity of the structure is improvedCompactness, and the thickness of the crystal layer is greatly reduced, so that the aluminum alloy cast rod is not easy to crack; simultaneously, the primary cooling adopts air cooling and fog cooling, the steering frequency of a fan is 10 times/min, and the flow of water used for the fog cooling is 40m3The second-stage cooling only adopts water cooling with water flow of 20m3/h；
(5) Carrying out solution treatment on the product after the homogenization treatment at 520 ℃ for 20s, and carrying out water spray cooling on the upper 90 percent and the lower 80 percent of cold water with 100 percent of strength; and performing manual working efficiency treatment at 160 ℃ for 2 hours to obtain the finished product of the aluminum alloy cast rod.
Comparative example 1
A preparation method of a high-strength aluminum alloy for heavy truck hubs comprises the following steps:
(1) raw materials are prepared according to the weight percentage of Si 4.5%, Mg0.37%, Ti0.127, Fe0.027%, Sr0.13% and Cu0.042%; heating single impurity less than or equal to 0.05 percent, total impurity less than or equal to 0.15 percent and the balance of Al to 595 ℃ for melting, stirring by a forklift to prevent incomplete melting of raw materials at the bottom, and performing primary refining by adopting double-tube refining at the temperature of 620 ℃ for 10 min;
(2) adjusting alloy components, continuing to heat the molten aluminum to 630 ℃ after the alloy components are qualified, and then transferring the molten aluminum to a heat preservation furnace for heat preservation; performing secondary refining, and still adopting double-tube refining for 12min at 640 ℃; standing at 640 deg.C for 30 min;
(3) refining and degassing the aluminum liquid after standing on line, and filtering by a two-stage filter plate;
(4) casting the filtered aluminum liquid and homogenizing; the homogenization treatment adopts two-stage gradient heating and cooling treatment, wherein the temperature is increased and decreased in an equal gradient manner, and the heating and cooling speed is 50 ℃/min; the method specifically comprises the following steps: first-stage isocratic temperature rise to 520 ℃, heat preservation for 5.5 hours, then first-stage isocratic temperature drop to 490 ℃, heat preservation for 2.2 hours; then, the temperature is raised to 590 ℃ in a secondary equal gradient way, the temperature is kept for 5h, the temperature is lowered to 520 ℃ in a secondary equal gradient way, and the temperature is kept for 2 h; after twice equal-gradient temperature rise and drop treatments, the structural mechanical property is obviously improved, elements such as Mg, Cu and the like can be fully diffused in crystal and in crystal boundary, the uniform compactness of the structure is improved, the thickness of the crystal layer is greatly reduced, and the aluminum alloy cast rod is ensured not to crack easily; aThe stage cooling and the secondary cooling only adopt water cooling, and the water flow is 17m3/h；
(5) Carrying out solution treatment on the product after the homogenization treatment at 520 ℃ for 20s, and carrying out water spray cooling on the upper 90 percent and the lower 80 percent of cold water with 100 percent of strength; and performing manual working efficiency treatment at 160 ℃ for 2 hours to obtain the finished product of the aluminum alloy cast rod.
Comparative example 2
The difference from the embodiment 1 is that the homogenization treatment in the step (4) adopts a two-stage homogenization process, the temperature of the first-stage homogenization is 490 ℃, the time for keeping the temperature of the first-stage homogenization is controlled to be 4 hours, the temperature of the second-stage homogenization is 520 ℃, and the time for keeping the temperature of the second-stage homogenization is controlled to be 24 hours.
The performance test of the aluminum alloy conductor rail section bars obtained in the examples 1-3 and the comparative examples 1-2 is carried out, and the results are as follows:
TABLE 1 test results of the properties of aluminum alloy cast bars
By combining the table 1, the influence of the aluminum alloy components, the homogenization and the aging heat treatment process on the strength and the surface quality is researched, so that the aluminum alloy cast rod with high mechanical property and high surface quality is prepared, and the aluminum alloy cast rod is the high-strength aluminum alloy for the heavy truck hub.
Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A preparation method of a high-strength aluminum alloy for heavy truck hubs is characterized by comprising the following steps:
(1) raw materials are subjected to Si 5.5-6.2%, Mg0.25-0.40%, Ti0.12-0.17%, Fe0.02-0.10%, Sr0.10-0.16%, Cu0.04-0.75% and Te0.03-0.08%; heating and melting single impurity less than or equal to 0.05 percent, total impurity less than or equal to 0.15 percent and the balance of Al for primary refining;
(2) adjusting alloy components, continuing to heat the aluminum liquid to 620-650 ℃ after the alloy components are qualified, and then transferring the aluminum liquid into a heat preservation furnace for heat preservation; carrying out secondary refining and standing;
(3) refining, degassing and filtering the aluminum liquid after standing on line;
(4) casting the filtered aluminum liquid and homogenizing;
(5) and performing solution treatment on the homogenized product at 510-520 ℃ for 20-30 s, and performing water-cooling quenching and artificial aging treatment to obtain an aluminum alloy cast rod finished product.
2. The method according to claim 1, wherein the melting temperature in the step (1) is 590 to 610 ℃.
3. The method according to claim 1, wherein the primary refining step in step (1) is performed by double-tube refining at 620 to 650 ℃ for 10 to 15 min.
4. The preparation method according to claim 1, wherein the secondary refining in the step (2) is performed by double-tube refining, wherein the double-tube refining is performed for 10-15 min at a temperature of 620-650 ℃.
5. The method according to claim 1, wherein the standing temperature in the step (2) is 620 to 630 ℃ and the standing time is 20 to 30 min.
6. The preparation method according to claim 1, wherein the homogenization treatment in step (4) is a two-stage gradient heating and cooling treatment, wherein the first-stage gradient heating is carried out until the temperature reaches 520 +/-5 ℃ and the temperature is kept for 5-7 h, and the second-stage gradient cooling is carried out until the temperature reaches 490 +/-5 ℃ and the temperature is kept for 2-3 h; and then, carrying out secondary equal gradient temperature rise to 590 +/-5 ℃, carrying out heat preservation for 5-10 h, carrying out secondary equal gradient temperature drop to 520 +/-5 ℃, and carrying out heat preservation for 2-4 h.
7. The preparation method of claim 6, wherein the constant gradient in the step (4) is that the temperature rise and fall rates are all 50-70 ℃/min.
8. The preparation method of claim 6, wherein the primary cooling in the step (4) adopts air cooling and fog cooling, the turning frequency of a fan is 10-20 times/min, and the flow rate of water used for the fog cooling is 35-50 m3And h, only water cooling is adopted for secondary cooling, and the flow of water is 15-20 m3/h。
9. The preparation method of claim 1, wherein the heating temperature in the artificial aging process in the step (5) is 160-170 ℃, and the holding time is 2-3 h.
10. A high-strength aluminum alloy for heavy truck hubs, which is prepared by the preparation method of any one of claims 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115323209A (en) * | 2022-08-16 | 2022-11-11 | 沈阳创新合金有限公司 | Casting process of ZL101A structural part |
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| CN111074180A (en) * | 2019-12-23 | 2020-04-28 | 安徽悦未科技有限公司 | High-strength pressure-resistant aluminum alloy cast rod for heavy truck hub and preparation process thereof |
| CN112481527A (en) * | 2019-09-12 | 2021-03-12 | 晟通科技集团有限公司 | 6XXX series aluminum alloy round ingot and preparation method thereof |
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| CN85102204A (en) * | 1985-04-01 | 1986-07-02 | 陕西机械学院 | Low Si, Mg and Te series high strenth alloy cast aluminium |
| WO2013034001A1 (en) * | 2011-09-09 | 2013-03-14 | 中兴通讯股份有限公司 | Al-si-mg cast aluminum alloy and process for casting same |
| CN112481527A (en) * | 2019-09-12 | 2021-03-12 | 晟通科技集团有限公司 | 6XXX series aluminum alloy round ingot and preparation method thereof |
| CN111074180A (en) * | 2019-12-23 | 2020-04-28 | 安徽悦未科技有限公司 | High-strength pressure-resistant aluminum alloy cast rod for heavy truck hub and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115323209A (en) * | 2022-08-16 | 2022-11-11 | 沈阳创新合金有限公司 | Casting process of ZL101A structural part |
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