CN108707790B - High-strength cast aluminum alloy - Google Patents
High-strength cast aluminum alloy Download PDFInfo
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- CN108707790B CN108707790B CN201810567760.9A CN201810567760A CN108707790B CN 108707790 B CN108707790 B CN 108707790B CN 201810567760 A CN201810567760 A CN 201810567760A CN 108707790 B CN108707790 B CN 108707790B
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- 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
- C22C21/04—Modified aluminium-silicon alloys
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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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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- 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
- C22F1/043—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 belongs to the technical field of aluminum alloy casting, in particular to a high-strength cast aluminum alloy, which solves the problems that the aluminum alloy casting in the prior art has low tissue compactness, the casting is easy to generate segregation and the comprehensive properties of the strength, toughness and plasticity of the casting are poor, and the preparation method comprises the following steps: adding Si, Mg, Zn, Cu, Mn, Ti, RE and Sn into a metal smelting furnace, melting at high temperature to obtain an alloy melt A, and preserving heat for later use; melting Al at high temperature, and adding a refining agent for refining to obtain pure aluminum liquid B; adding the alloy melt A into the pure aluminum liquid B, adding SiC and an alterant, and uniformly mixing to obtain alloy liquid C; and finishing casting the alloy liquid C at high temperature to obtain a casting. The invention effectively improves the tissue compactness of the casting, avoids the problem of casting segregation, and the obtained aluminum alloy has higher strength and hardness, good wear resistance and corrosion resistance, good processing and casting performance and wide application prospect.
Description
The patent application is divisional application, the application number of a parent application is 2017101608408, and the application date of the parent application is 03 and 17 in 2017.
Technical Field
The invention relates to the technical field of aluminum alloy casting, in particular to a high-strength cast aluminum alloy.
Background
Aluminum alloys are the most widely used non-ferrous structural materials in industry, and alloy elements such as copper, zinc, manganese, silicon, magnesium and the like are commonly used, and are widely used in the aviation, aerospace, automobile, mechanical manufacturing, ship and chemical industries. The pure aluminum has small density (rho is 2.7g/cm3), is about 1/3 of iron, has low melting point (660 ℃), has high plasticity (delta: 32-40%, psi: 70-90%), is easy to process, can be made into various sections and plates, and has good corrosion resistance; however, pure aluminum has a low strength and an annealed σ b value of about 8kgf/mm2, and thus is not suitable as a structural material. Through long-term production practices and scientific experiments, people gradually add alloy elements and apply heat treatment and other methods to strengthen aluminum, so that a series of aluminum alloys are obtained. The alloy formed by adding certain elements has higher strength while keeping the advantages of light weight of pure aluminum and the like, and the sigma b values can respectively reach 24-60 kgf/mm 2. Therefore, the specific strength (the ratio sigma b/rho of the strength to the specific gravity) of the steel plate is superior to that of a plurality of alloy steels, so that the steel plate becomes an ideal structural material and is widely applied to the aspects of mechanical manufacture, transportation machinery, power machinery, aviation industry and the like, the airframe, the skin, the air compressor and the like of an airplane are usually made of aluminum alloy to reduce the self weight, and the aluminum alloy is adopted to replace the welding of steel plate materials, so that the structural weight can be reduced by more than 50%. Therefore, the high-strength aluminum alloy has wide application prospect. Patent application No. 201010248240.5 discloses a method for preparing a high-toughness building aluminum alloy, which comprises optimizing alloy chemical components, controlling alloy smelting process and heat treatment process to obtain an aluminum alloy with good impact toughness and large impact load bearing capacity; patent application No. 201510274018.5 discloses a high strength cast aluminum alloy prepared from Zn, Ni, Mg, Cu, Mn, Cr, Sc and Al as raw materials and having a uniform microstructure and good toughness and toughness matching. However, with the rapid development of modern industry and scientific technology, people have higher and higher performance requirements on cast aluminum alloy, and aluminum alloy castings cast by the existing aluminum alloy casting technology still have the problems of low tissue compactness, easy segregation of castings, poor comprehensive properties of casting strength, toughness and plasticity and the like.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a high-strength cast aluminum alloy which solves the problems that in the prior art, an aluminum alloy casting is low in structural compactness, the casting is easy to generate segregation, and the comprehensive properties of the strength, toughness and plasticity of the casting are poor.
A high strength cast aluminum alloy comprising the steps of: s1, preparing the following raw materials for preparing the aluminum alloy in percentage by weight: si 2-6.5%, Mg1.6-2.8%, Zn2.5-3%, Cu2.2-2.8%, Mn0.1-0.5%, Ti0.2-0.6%, RE 0.1-0.4%, Sn0.2-0.6%, SiC0.5-1%, refining agent 0.08-0.15%, modifier 0.03-0.08%, and the balance Al, adding the Si, Mg, Zn, Cu, Mn, Ti, RE, and Sn in the weight percentage into a metal smelting furnace, melting at the high temperature of 1200-1450 ℃, stirring uniformly at the rotating speed of 300-400 r/min after the melt is melted to obtain an alloy melt A, and preserving heat for later use;
s2, melting the Al in percentage by weight at a high temperature of 680-760 ℃, adding a refining agent in percentage by weight after melting for 3-5 hours, and refining for 20-40 min to obtain pure aluminum liquid B;
s3, adding the alloy melt A obtained in the step S1 into the pure aluminum liquid B obtained in the step S2, adding the SiC and the modifier in percentage by weight, and stirring and mixing uniformly at a high speed at a rotating speed of 580-720 r/min to obtain alloy liquid C;
and S4, adding the alloy liquid C obtained in the step S3 into a centrifugal casting machine at a high temperature of 760-800 ℃, filling a casting mold under the action of centrifugal force, completing casting to obtain a casting, quenching and aging the casting, and completing treatment to obtain the required high-strength cast aluminum alloy.
Preferably, the raw material for preparing the aluminum alloy in the step S1 includes the following components by weight percent: 3-5.5% of Si, 1.8-2.5% of Mg1.6-2.9% of Zn2.3-2.7% of Cu2.3-2.4% of Mn0.2-0.4%, 0.3-0.5% of Ti0.2-0.3% of RE, 0.3-0.5% of Sn0.6-0.8%, 0.1-0.14% of SiC0.04-0.07% of a refining agent, and the balance of Al.
Preferably, the raw material for preparing the aluminum alloy in the step S1 includes the following components by weight percent: si4%, Mg2%, Zn2.8%, Cu2.5%, Mn0.3%, Ti0.4%, RE0.3%, Sn0.4%, SiC0.7%, refining agent 0.12%, modifier 0.05%, and the balance of Al.
Preferably, the SiC refers to a nano-grade material with the particle size of 1-100 nm.
Preferably, the refining agent is a compound agent of C, NaF, NaHCO3 and Na2SiF6, wherein the mass ratio of C, NaF, NaHCO3 and Na2SiF6 is 1: 3-5: 1-3: 0.4-1.
Preferably, the alterant is one of sodium, sodium salt and antimony.
Preferably, the refining agent is added in step S2 by filling the refining agent into a powder injection refining tank and injecting the refining agent into the molten aluminum by using inert gas.
Preferably, the inert gas is one of pure helium, pure neon and pure argon, and the purity of the inert gas is more than 99.99%.
Preferably, the quenching treatment in the step S4 is to keep the temperature of the casting cast at the high temperature of 760 to 800 ℃ for 1.8 to 2.5 hours, then rapidly quench the casting into water at the temperature of 55 to 85 ℃ to rapidly cool the casting, and finally cool the casting to room temperature.
Preferably, the aging treatment in the step S4 includes two parts of incomplete aging and complete aging, specifically, the aluminum alloy casting subjected to quenching treatment is heated to 145-158 ℃, the temperature is kept for 3-5 hours, then the temperature is continuously increased to 165-178 ℃, and the temperature is kept for 6-9 hours.
The invention provides a high-strength cast aluminum alloy, which takes Al as a main raw material, alloy elements are added by scientific proportion for mixing, the alloy raw material contains trace Mn, Ti and RE which can form refractory compounds and serve as non-spontaneous crystal nuclei when the alloy is crystallized, the effect of refining crystal grains is achieved, the strength and the plasticity of the alloy are improved, the Al is refined by a refining agent, hydrogen and floating oxidation slag inclusion in molten aluminum are effectively removed, the addition of a modifier can achieve the effect of refining alloy structure, the strength and the plasticity of the alloy are further improved, the nano SiC added in the formula has high hardness, high wear resistance, good self-lubrication and high-temperature strength, the alloy materials are uniformly dispersed, the strength is greatly improved, the casting of a casting is completed by adopting a centrifugal casting technology in the invention, the structural compactness of the casting is effectively improved, and the problem of casting segregation is avoided, the preparation method provided by the invention is simple to operate, and the obtained aluminum alloy has higher strength and hardness, good wear resistance and corrosion resistance, good processing and casting performances and wide application prospect.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a high-strength cast aluminum alloy, which comprises the following steps: s1, preparing the following raw materials for preparing the aluminum alloy in percentage by weight: si 5%, Mg2%, Zn2.8%, Cu2.4%, Mn0.4%, Ti0.3%, RE 0.1%, Sn0.3%, SiC0.8%, refining agent 0.12%, sodium 0.05%, and the balance of Al; wherein the refining agent is a compound agent of C, NaF, NaHCO3 and Na2SiF6 in a mass ratio of 1:4:2.5: 0.8; adding the Si, Mg, Zn, Cu, Mn, Ti, RE and Sn in the weight percentage into a metal smelting furnace, melting at the high temperature of 1250 ℃, stirring uniformly at the rotating speed of 380r/min after the melt is melted to obtain an alloy melt A, and preserving heat for later use;
s2, melting the Al in percentage by weight at the high temperature of 720 ℃, after 4 hours of melting, putting the refining agent in percentage by weight into a powder spraying refining tank, spraying the refining agent into molten aluminum by using helium with the purity of more than 99.99%, and refining for 35 minutes to obtain pure aluminum liquid B;
s3, adding the alloy melt A obtained in the step S1 into the pure aluminum liquid B obtained in the step S2, adding the SiC and the sodium with the weight percentage and the particle size of 10nm, and stirring and mixing uniformly at a high speed of 650r/min to obtain alloy liquid C;
s4, adding the alloy liquid C obtained in the step S3 into a centrifugal casting machine at the high temperature of 780 ℃, filling a casting mold under the action of centrifugal force, completing casting to obtain a casting, preserving heat of the casting obtained by casting for 2.2 hours, rapidly quenching the casting into water at the temperature of 60 ℃, cooling to room temperature to complete quenching treatment, heating the aluminum alloy casting subjected to quenching treatment to 150 ℃, preserving heat for 4 hours, continuously heating to 170 ℃, and preserving heat for 8 hours to obtain the required high-strength cast aluminum alloy.
Example two
The invention provides a high-strength cast aluminum alloy, which comprises the following steps: s1, preparing the following raw materials for preparing the aluminum alloy in percentage by weight: 3.5% of Si, 1.8% of Mg1.8%, 3% of Zn, 2.8% of Cu2.1%, 0.1% of Mn0.5%, 0.3% of RE, 0.2% of Sn0.2%, 1% of SiC, 0.08% of refining agent, 0.08% of antimony and the balance of Al; wherein the refining agent is a compound agent of C, NaF, NaHCO3 and Na2SiF6 in a mass ratio of 1:3.5:1.5: 0.6; adding the Si, Mg, Zn, Cu, Mn, Ti, RE and Sn in the weight percentage into a metal smelting furnace, melting at the high temperature of 1400 ℃, stirring uniformly at the rotating speed of 350r/min after the melt is melted to obtain an alloy melt A, and preserving heat for later use;
s2, melting the Al with the weight percentage at a high temperature of 680 ℃, after melting for 5 hours, filling the refining agent with the weight percentage into a powder spraying refining tank, spraying the refining agent into molten aluminum by using argon with the purity of more than 99.99%, and refining for 20 minutes to obtain pure molten aluminum B;
s3, adding the alloy melt A obtained in the step S1 into the pure aluminum liquid B obtained in the step S2, adding SiC and antimony with the particle size of 35nm in percentage by weight, and stirring and mixing uniformly at a high speed at a rotating speed of 580r/min to obtain alloy liquid C;
s4, adding the alloy liquid C obtained in the step S3 into a centrifugal casting machine at a high temperature of 760 ℃, filling a casting mold under the action of centrifugal force, completing casting to obtain a casting, preserving heat of the casting obtained by casting for 1.8h, rapidly quenching the casting into water at 85 ℃, cooling to room temperature to complete quenching treatment, heating the aluminum alloy casting subjected to quenching treatment to 155 ℃, preserving heat for 3.5h, continuously heating to 165 ℃, preserving heat for 9h, and obtaining the required high-strength cast aluminum alloy.
The third embodiment of the invention provides a high-strength cast aluminum alloy, which comprises the following steps:
s1, preparing the following raw materials for preparing the aluminum alloy in percentage by weight: 4% of Si, 2.5% of Mg2.5%, 2.5% of Zns, 2.2% of Cus, 0.5% of Mns, 0.2% of Tis, 0.4% of RE, 0.4% of Sns, 0.6% of SiCs, 0.15% of refining agents, 0.03% of sodium and the balance of Al; wherein the refining agent is a compound agent of C, NaF, NaHCO3 and Na2SiF6 in a mass ratio of 1:3:1: 0.5; adding the Si, Mg, Zn, Cu, Mn, Ti, RE and Sn in the weight percentage into a metal smelting furnace, melting at the high temperature of 1300 ℃, stirring uniformly at the rotating speed of 400r/min after the melt is melted to obtain an alloy melt A, and preserving heat for later use;
s2, melting the Al in percentage by weight at the high temperature of 750 ℃, putting the refining agent in percentage by weight into a powder spraying refining tank after melting for 3.5 hours, spraying the refining agent into molten aluminum by using helium with the purity of more than 99.99%, and refining for 40min to obtain pure aluminum liquid B;
s3, adding the alloy melt A obtained in the step S1 into the pure aluminum liquid B obtained in the step S2, adding the SiC and the sodium with the weight percentage and the particle size of 1nm, and stirring and mixing uniformly at a high speed of 720r/min to obtain alloy liquid C;
s4, adding the alloy liquid C obtained in the step S3 into a centrifugal casting machine at a high temperature of 800 ℃, filling a casting mold under the action of centrifugal force, completing casting to obtain a casting, preserving heat of the casting obtained by casting for 2.5 hours, rapidly quenching the casting into water at a temperature of 75 ℃, cooling to room temperature to complete quenching treatment, heating the aluminum alloy casting subjected to quenching treatment to 145 ℃, preserving heat for 5 hours, continuously heating to 172 ℃, and preserving heat for 7 hours to obtain the required high-strength cast aluminum alloy.
The fourth embodiment of the invention provides a high-strength cast aluminum alloy, which comprises the following steps: s1, preparing the following raw materials for preparing the aluminum alloy in percentage by weight: 6.5 percent of Si, 1.6 percent of Mg1.6 percent of Zn2.6 percent of Cu2.6 percent of Mn0.3 percent of Ti0.6 percent of RE0.2 percent of Sn0.5 percent of SiC0.9 percent of refining agent 0.1 percent of sodium salt 0.06 percent of Al in balance; wherein the refining agent is a compound agent of C, NaF, NaHCO3 and Na2SiF6 in a mass ratio of 1:4.5:3: 0.7; adding Si, Mg, Zn, Cu, Mn, Ti, RE and Sn in the weight percentage into a metal smelting furnace, melting at the high temperature of 1450 ℃, stirring uniformly at the rotating speed of 320r/min after the melt is melted to obtain an alloy melt A, and preserving heat for later use;
s2, melting the Al in percentage by weight at the high temperature of 700 ℃, after 4.5 hours of melting, putting the refining agent in percentage by weight into a powder spraying refining tank, spraying the refining agent into aluminum liquid by using neon with the purity of more than 99.99%, and refining for 25min to obtain pure aluminum liquid B;
s3, adding the alloy melt A obtained in the step S1 into the pure aluminum liquid B obtained in the step S2, adding the SiC and the sodium salt with the weight percentage and the particle size of 100nm, and stirring and mixing uniformly at a high speed at a rotating speed of 690r/min to obtain alloy liquid C;
s4, adding the alloy liquid C obtained in the step S3 into a centrifugal casting machine at the high temperature of 790 ℃, filling a casting mold under the action of centrifugal force, completing casting to obtain a casting, preserving heat of the casting obtained by casting for 2 hours, rapidly quenching the casting into water at the temperature of 55 ℃, rapidly cooling the casting to room temperature, completing quenching treatment, heating the aluminum alloy casting subjected to quenching treatment to 158 ℃, preserving heat for 3 hours, continuously heating to 165 ℃, and preserving heat for 7.5 hours to obtain the required high-strength cast aluminum alloy.
The embodiment five provides a high-strength cast aluminum alloy, which comprises the following steps: s1, preparing the following raw materials for preparing the aluminum alloy in percentage by weight: 6% of Si, 2.8% of Mg2.9% of Zn2.9%, 2.5% of Cu2.2%, 0.2% of Mn0.4%, 0.3% of RE, 0.6% of Sn0.5%, 0.5% of SiC, 0.14% of refining agent, 0.04% of stibium and the balance of Al; wherein the refining agent is a compound agent of C, NaF, NaHCO3 and Na2SiF6 in a mass ratio of 1:5:2: 1; adding the Si, Mg, Zn, Cu, Mn, Ti, RE and Sn in the weight percentage into a metal smelting furnace, melting at the high temperature of 1350 ℃, stirring uniformly at the rotating speed of 300r/min after the melt is melted to obtain an alloy melt A, and preserving heat for later use;
s2, melting the Al in percentage by weight at a high temperature of 760 ℃, after 3 hours of melting, putting the refining agent in percentage by weight into a powder spraying refining tank, spraying the refining agent into molten aluminum by using argon with the purity of more than 99.99%, and refining for 30 minutes to obtain pure aluminum liquid B;
s3, adding the alloy melt A obtained in the step S1 into the pure aluminum liquid B obtained in the step S2, adding SiC and antimony with the particle size of 80nm in percentage by weight, and stirring and mixing uniformly at a high speed at a rotating speed of 620r/min to obtain alloy liquid C;
s4, adding the alloy liquid C obtained in the step S3 into a centrifugal casting machine at a high temperature of 770 ℃, filling a casting mold under the action of centrifugal force, completing casting to obtain a casting, preserving heat of the casting obtained by casting for 2.4 hours, rapidly quenching the casting into water at 70 ℃, cooling to room temperature to complete quenching treatment, heating the aluminum alloy casting subjected to quenching treatment to 148 ℃, preserving heat for 4.5 hours, continuously heating to 178 ℃, and preserving heat for 6 hours to obtain the required high-strength cast aluminum alloy.
The mechanical properties of the high-strength cast aluminum alloys prepared in the first to fifth embodiments of the present invention were respectively tested, and the following results were obtained:
| examples | A | II | III | Fourthly | Five of them |
| Tensile strength (MPa) | 384 | 422 | 449 | 407 | 390 |
| Elongation at Break (%) | 10.7 | 13.2 | 14.1 | 12.6 | 12.2 |
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A high-strength cast aluminum alloy is characterized by being prepared by the following steps: s1, preparing the following raw materials for preparing the aluminum alloy in percentage by weight: si 2-6.5%, Mg1.6-2.8%, Zn2.5-3%, Cu2.2-2.8%, Mn0.1-0.5%, Ti0.2-0.6%, RE 0.1-0.4%, Sn0.2-0.6%, SiC0.5-1%, refining agent 0.08-0.15%, modifier 0.03-0.08%, and the balance Al, adding the Si, Mg, Zn, Cu, Mn, Ti, RE, and Sn in the weight percentage into a metal smelting furnace, melting at the high temperature of 1200-1450 ℃, stirring uniformly at the rotating speed of 300-400 r/min after the melt is melted to obtain an alloy melt A, and preserving heat for later use;
s2, melting the Al in percentage by weight at a high temperature of 680-760 ℃, adding a refining agent in percentage by weight after melting for 3-5 hours, and refining for 20-40 min to obtain pure aluminum liquid B;
s3, adding the alloy melt A obtained in the step S1 into the pure aluminum liquid B obtained in the step S2, adding SiC and a modifier with the particle size of 1-100 nm in percentage by weight, and stirring and mixing uniformly at a high speed of 580-720 r/min to obtain an alloy liquid C;
and S4, adding the alloy liquid C obtained in the step S3 into a centrifugal casting machine at a high temperature of 760-800 ℃, filling a casting mold under the action of centrifugal force, completing casting to obtain a casting, quenching and aging the casting, and completing treatment to obtain the required high-strength cast aluminum alloy.
2. The high-strength cast aluminum alloy according to claim 1, wherein the raw material for preparing the aluminum alloy in the step S1 comprises the following components in percentage by weight: 3-5.5% of Si, 1.8-2.5% of Mg1.6-2.9% of Zn2.3-2.7% of Cu2.3-2.4% of Mn0.2-0.4%, 0.3-0.5% of Ti0.2-0.3% of RE, 0.3-0.5% of Sn0.6-0.8%, 0.1-0.14% of SiC0.04-0.07% of a refining agent, and the balance of Al.
3. The high-strength cast aluminum alloy according to claim 1, wherein the raw material for preparing the aluminum alloy in the step S1 comprises the following components in percentage by weight: si4%, Mg2%, Zn2.8%, Cu2.5%, Mn0.3%, Ti0.4%, RE0.3%, Sn0.4%, SiC0.7%, refining agent 0.12%, modifier 0.05%, and the balance of Al.
4. A high strength cast aluminum alloy as recited in claim 1, wherein said refining agent is C, NaF, NaHCO3And Na2SiF6The compounding agent of (1), wherein C, NaF, NaHCO3And Na2SiF6The mass ratio of (A) to (B) is 1: 3-5: 1-3: 0.4-1.
5. A high strength cast aluminum alloy according to claim 1, wherein said modifier is one of sodium, sodium salt and antimony.
6. The high-strength cast aluminum alloy according to claim 1, wherein the refining agent in the step S2 is added by charging the refining agent into a powder injection refining tank and injecting the refining agent into the molten aluminum by using an inert gas.
7. The high strength cast aluminum alloy of claim 6, wherein the inert gas is one of pure helium, pure neon, and pure argon, and the inert gas has a purity greater than 99.99%.
8. The high-strength cast aluminum alloy as claimed in claim 1, wherein the quenching treatment in step S4 is performed by keeping the temperature of the cast product at 760-800 ℃ for 1.8-2.5 h, rapidly quenching the cast product in water at 55-85 ℃ to rapidly cool the cast product, and finally cooling the cast product to room temperature.
9. The high-strength cast aluminum alloy according to claim 1, wherein the aging treatment in the step S4 includes incomplete aging and complete aging, and specifically includes heating the aluminum alloy casting subjected to quenching treatment to 145-158 ℃, preserving heat for 3-5 hours, then continuously heating to 165-178 ℃, and preserving heat for 6-9 hours.
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| CN107829001A (en) * | 2017-12-18 | 2018-03-23 | 广州致远新材料科技有限公司 | A kind of preparation method of extrusion casint aluminum alloy materials |
| CN109082546A (en) * | 2018-08-24 | 2018-12-25 | 海门市沪海有色铸造有限公司 | A kind of ZAlCu5Mn melting cast aluminum alloy technique |
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| CN113957429A (en) * | 2021-09-09 | 2022-01-21 | 成都银河动力有限公司 | Preparation and strengthening method of aluminum alloy for piston |
| CN114941089B (en) * | 2022-04-19 | 2023-06-27 | 金源(山东)新能源科技发展有限公司 | High-strength high-conductivity Al-Zr-Si type aluminum alloy |
| CN115976372B (en) * | 2022-12-26 | 2024-03-29 | 四会市辉煌金属制品有限公司 | High-heat-conductivity high-strength die-casting aluminum alloy material and preparation method thereof |
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| SU801598A1 (en) * | 1978-10-09 | 1986-07-23 | Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов | Aluminium-base alloy |
| SU1349298A1 (en) * | 1985-07-12 | 1996-01-10 | Институт химии им.В.И.Никитина | Aluminum base alloy |
| JPH10130766A (en) * | 1996-10-29 | 1998-05-19 | Furukawa Electric Co Ltd:The | Direct cast and rolled sheet excellent in moldability and surface quality and small in secular change and its production |
| CN1936050A (en) * | 2006-10-18 | 2007-03-28 | 东华大学 | Fine grained aluminium alloy and its preparing method |
| CN101709414A (en) * | 2009-11-10 | 2010-05-19 | 中国兵器工业第五二研究所 | High silicon gradient composite aluminum alloy cylinder sleeve material and preparation method thereof |
| CN103031473A (en) * | 2009-03-03 | 2013-04-10 | 中国科学院苏州纳米技术与纳米仿生研究所 | Processing method of high-toughness Al-Si system die-casting aluminum alloy |
| CN103074507A (en) * | 2013-01-10 | 2013-05-01 | 山东正诺机械科技有限公司 | Carborundum-added particle-reinforced silicon aluminum alloy matrix composite for brake disc and preparation method thereof |
| CN103343268A (en) * | 2013-07-22 | 2013-10-09 | 创金美科技（深圳）有限公司 | Aluminium die-cast alloy |
| CN105603269A (en) * | 2016-01-25 | 2016-05-25 | 张颖 | Method for manufacturing aluminum automobile gearbox shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09125179A (en) * | 1995-10-30 | 1997-05-13 | Sumitomo Light Metal Ind Ltd | Aluminum alloy composite for brake disk, with high friction coefficient |
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2017
- 2017-03-17 CN CN201710160840.8A patent/CN107034372B/en not_active Expired - Fee Related
- 2017-03-17 CN CN201810567760.9A patent/CN108707790B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU801598A1 (en) * | 1978-10-09 | 1986-07-23 | Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов | Aluminium-base alloy |
| SU1349298A1 (en) * | 1985-07-12 | 1996-01-10 | Институт химии им.В.И.Никитина | Aluminum base alloy |
| JPH10130766A (en) * | 1996-10-29 | 1998-05-19 | Furukawa Electric Co Ltd:The | Direct cast and rolled sheet excellent in moldability and surface quality and small in secular change and its production |
| CN1936050A (en) * | 2006-10-18 | 2007-03-28 | 东华大学 | Fine grained aluminium alloy and its preparing method |
| CN103031473A (en) * | 2009-03-03 | 2013-04-10 | 中国科学院苏州纳米技术与纳米仿生研究所 | Processing method of high-toughness Al-Si system die-casting aluminum alloy |
| CN101709414A (en) * | 2009-11-10 | 2010-05-19 | 中国兵器工业第五二研究所 | High silicon gradient composite aluminum alloy cylinder sleeve material and preparation method thereof |
| CN103074507A (en) * | 2013-01-10 | 2013-05-01 | 山东正诺机械科技有限公司 | Carborundum-added particle-reinforced silicon aluminum alloy matrix composite for brake disc and preparation method thereof |
| CN103343268A (en) * | 2013-07-22 | 2013-10-09 | 创金美科技（深圳）有限公司 | Aluminium die-cast alloy |
| CN105603269A (en) * | 2016-01-25 | 2016-05-25 | 张颖 | Method for manufacturing aluminum automobile gearbox shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108707790A (en) | 2018-10-26 |
| CN107034372A (en) | 2017-08-11 |
| CN107034372B (en) | 2018-07-24 |
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