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Production method of aluminum alloy for rail-vehicle bogie shaft box body

A bogie axle and rail vehicle technology, applied in the field of aluminum alloys, can solve the problems of poor tensile strength, yield strength, elongation, and can not meet the mechanical performance requirements of rail vehicle bogie axle boxes, and meet the mechanical performance requirements. Effect

Inactive Publication Date: 2014-03-05
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the metal materials used for rail vehicle bogie axle boxes have poor tensile strength, yield strength, and elongation, and cannot meet the mechanical performance requirements of rail vehicle bogie axle boxes during high-speed operation.

Method used

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  • Production method of aluminum alloy for rail-vehicle bogie shaft box body
  • Production method of aluminum alloy for rail-vehicle bogie shaft box body
  • Production method of aluminum alloy for rail-vehicle bogie shaft box body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014]

[0015] Table 1

[0016] The aluminum alloy raw material formed according to the metal mass percentage in Table 1 is melted and ingot-cast to form an aluminum alloy material. When the aluminum alloy material is processed into a bogie axle box, the tensile strength σb=506MPa parallel to its streamline direction, yield Strength σs=451MPa, elongation δ=20%, tensile strength not parallel to its streamline direction σb=486MPa, yield strength σs=433MPa, elongation δ=18%. Therefore, the axle box processed by this alloy material meets the tensile strength σb≥485MPa parallel to its streamline direction, yield strength σs≥415MPa, elongation δ≥7%, and the tensile strength not parallel to its streamline direction Strength σb≥460MPa, yield strength σs≥385MPa, elongation δ≥4% mechanical property requirements.

Embodiment 2

[0018]

[0019] Table 2

[0020] The aluminum alloy raw material formed according to the metal mass percentage in Table 2 is melted and ingot-cast to form an aluminum alloy material. When the aluminum alloy material is processed into a bogie axle box, the tensile strength σb=511MPa parallel to its streamline direction, yield Strength σs=448MPa, elongation δ=31%, tensile strength σb=492MPa not parallel to its streamline direction, yield strength σs=420MPa, elongation δ=16%. Therefore, the axle box processed by this alloy material meets the tensile strength σb≥485MPa parallel to its streamline direction, yield strength σs≥415MPa, elongation δ≥7%, and the tensile strength not parallel to its streamline direction Strength σb≥460MPa, yield strength σs≥385MPa, elongation δ≥4% mechanical property requirements.

Embodiment 3

[0022]

[0023] table 3

[0024] When the aluminum alloy raw material formed according to the metal mass percentage in Table 3 is melted and ingot-cast, and processed into a bogie axle box, the tensile strength σb=532MPa, yield strength σs=465MPa parallel to its streamline direction, and elongation Rate δ=42%, tensile strength σb=511MPa not parallel to its streamline direction, yield strength σs=446MPa, elongation δ=31%. Therefore, the axle box processed by this alloy material meets the tensile strength σb≥485MPa parallel to its streamline direction, yield strength σs≥415MPa, elongation δ≥7%, and the tensile strength not parallel to its streamline direction Strength σb≥460MPa, yield strength σs≥385MPa, elongation δ≥4% mechanical property requirements.

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Abstract

The invention provides a production method of an aluminum alloy for a rail-vehicle bogie shaft box body. The production method comprises the following steps of preparing the following raw materials for the aluminum alloy in percentage by weight: less than 0.12 percent of Si, less than 0.15 percent of Fe, more than or equal to 2.0 percent and less than or equal to 2.6 percent of Cu, less than 0.10% of Mn, 1.9 to 2.6 percent of Mg, more than or equal to 0.08 percent and less than or equal to 0.15 percent of Zr, more than or equal to 5.7 percent and less than or equal to 6.7 percent of Zn, less than 0.06 percent of Ti, less than 0.15 percent of impurities and the balance of Al; and melting and ingoting the aluminum alloy raw material. By adopting the production method of the aluminum alloy for the rail-vehicle bogie shaft box body, the tensile strength, the yield strength and the elongation rate of a bogie shaft box body produced through the method are high, and the mechanical performance requirement of the bogie shaft box body can be met.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a method for producing aluminum alloys for rail vehicle bogie axle boxes. Background technique [0002] With the continuous development of science and technology, high-speed rail has been widely used in various cities. The continuous speed increase of rail vehicles has put forward higher and higher requirements for the safe operation of the vehicles. Among them, the quality of the axle box of the rail vehicle bogie plays a decisive role in the safe operation of the vehicles. [0003] In the prior art, the metal materials used for rail vehicle bogie axle boxes have poor tensile strength, yield strength, and elongation, and cannot meet the mechanical performance requirements of rail vehicle bogie axle boxes during high-speed operation. [0004] Therefore, how to meet the requirements of tensile strength, yield strength and elongation of the high-speed railway bogie axle bo...

Claims

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Application Information

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IPC IPC(8): C22C21/10
Inventor 金承龙邓小三
Owner SOUTHWEST ALUMINUM GRP
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