Aluminum alloy for high-speed train axle box and manufacturing method of high-speed train axle box

A manufacturing method and high-speed train technology, applied in the field of aluminum alloy materials, can solve the problems that the performance is difficult to meet the high requirements of high-speed train axle boxes

Active Publication Date: 2021-09-14
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an aluminum alloy for a high-speed train axle box and a manufacturing method for a high-speed train axle box to solve the problem that the existing high-speed train axle box uses aluminum alloy to reduce the quality of the axle box and realize light weight Satisfactory, but its performance is difficult to meet the high requirements of high-speed train axle box

Method used

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  • Aluminum alloy for high-speed train axle box and manufacturing method of high-speed train axle box

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The aluminum alloy for high-speed train axle box body of this embodiment, its chemical element composition mass percentage content includes: 5.8% Zn, 1.5% Mg, 2.0% Cu, 0.1% Zr, 0.07% Ti, the rest is Al. Among them, it is made of the following raw materials: Al-Cu master alloy, Al-Zr master alloy, Al-Ti master alloy, pure Al, pure Zn and pure Mg.

[0028] The manufacturing method of the high-speed train axle box body of the present embodiment adopts the aluminum alloy for the high-speed train axle box body described above, comprising the following steps:

[0029] (1) After the above-mentioned pure Al is heated until it is completely melted, the temperature of the melt is raised to 680°C, and an Al-Cu master alloy is added; then the temperature of the melt is raised to 7200°C, and an Al-Zr master alloy and an Al-Ti master alloy are added; Then the melt was cooled to 690°C, and pure Zn and pure Mg were added; finally, the melt was heated to 720°C, stirred for 2 minutes, an...

Embodiment 2

[0038] The aluminum alloy for high-speed train axle box body of this embodiment, its chemical element composition mass percentage content includes: 6.1% Zn, 1.6% Mg, 2.2% Cu, 0.13% Zr, 0.08% Ti, the rest is Al. Among them, it is made of the following raw materials: Al-Cu master alloy, Al-Zr master alloy, Al-Ti master alloy, pure Al, pure Zn and pure Mg.

[0039] The manufacturing method of the high-speed train axle box body of the present embodiment adopts the aluminum alloy for the high-speed train axle box body described above, comprising the following steps:

[0040] (1) After the above-mentioned pure Al is heated until it is completely melted, the temperature of the melt is raised to 685° C., and an Al-Cu master alloy is added; the temperature of the melt is raised to 725° C., and an Al-Zr master alloy and an Al-Ti master alloy are added; Then the melt was cooled to 695°C, and pure Zn and pure Mg were added; finally, the melt was heated to 725°C, stirred for 2 minutes, and...

Embodiment 3

[0049] The aluminum alloy for the high-speed train axle box body of this embodiment has the composition of chemical elements in mass percent: 6.2% Zn, 1.71% Mg, 2.37% Cu, 0.15% Zr, 0.08% Ti, and the rest is Al. Among them, it is made of the following raw materials: Al-Cu master alloy, Al-Zr master alloy, Al-Ti master alloy, pure Al, pure Zn and pure Mg.

[0050] The manufacturing method of the high-speed train axle box body of the present embodiment adopts the aluminum alloy for the high-speed train axle box body described above, comprising the following steps:

[0051] (1) After the above-mentioned pure Al is heated until it is completely melted, the temperature of the melt is raised to 690°C, and an Al-Cu master alloy is added; then the temperature of the melt is raised to 730°C, and an Al-Zr master alloy and an Al-Ti master alloy are added; Then the melt was cooled to 700°C, and pure Zn and pure Mg were added; finally, the melt was heated to 725°C, stirred for 3 minutes, an...

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Abstract

The invention discloses an aluminum alloy for a high-speed train axle box and a manufacturing method of the high-speed train axle box, belonging to the technical field of aluminum alloy materials. Its chemical element composition mass percentage content includes: 5.8-7.6% Zn, 1.5-1.8% Mg, 2.0-2.5% Cu, 0.1-0.2% Zr, 0.07-0.12% Ti, and the rest is Al. Compared with the currently used axle box body, the weight of the high-speed train axle box body of the invention is significantly reduced, and a weight reduction rate of more than 40% can be realized, and the mechanical performance is good.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to an aluminum alloy for a high-speed train axle box and a method for manufacturing the high-speed train axle box. Background technique [0002] With the gradual increase in the speed of high-speed trains and the important demand for energy conservation and environmental protection, further lightweighting of high-speed trains has become a basic element in the design and manufacture of high-speed trains, and it is also an inevitable trend. [0003] The axle boxes of high-speed trains currently in operation are mainly made of ductile iron, resulting in a high overall quality of the axle boxes. As a lightweight structural material, aluminum alloy has the advantages of low density, high strength, good electrical and thermal conductivity, good corrosion resistance, easy forming and processing, and has been widely used in the manufacturing field of high-speed trains. Exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/03C22F1/053
CPCC22C1/026C22C1/03C22C21/10C22F1/053
Inventor 张英波李家衡陈辉
Owner SOUTHWEST JIAOTONG UNIV
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