CN103614598A

CN103614598A - Production method of aluminum alloy for rail-vehicle undercarriage plate

Info

Publication number: CN103614598A
Application number: CN201310711439.0A
Authority: CN
Inventors: 李翔; 罗明
Original assignee: Southwest Aluminum Group Co Ltd
Current assignee: Southwest Aluminum Group Co Ltd
Priority date: 2013-12-20
Filing date: 2013-12-20
Publication date: 2014-03-05
Anticipated expiration: 2033-12-20
Also published as: CN103614598B

Abstract

The invention provides a production method of an aluminum alloy for a rail-vehicle undercarriage plate. The production method comprises the following steps of preparing aluminum alloy raw materials in percentage by mass as follows: less than 0.3 percent of Si, less than 0.35 percent of Fe, less than 0.20 percent of Cu, more than 0.20 percent and less than 0.70 percent of Mn, 1.0 to 2.0 percent of Mg, less than 0.30 percent of Cr, more than 4.0 percent and less than 5.0 percent of Zn, less than 0.1 percent of V, less than 0.2 percent of Ti, less than 0.25 percent of Zr, less than 0.15 percent of impurities and the balance of Al; and melting and ingoting the aluminum alloy raw materials. By adopting the production method of the aluminum alloy for the rail-vehicle undercarriage plate, the tensile strength, the yield strength and the elongation rate of the aluminum alloy obtained through the method are high, and the mechanical performance requirement of the high-speed railway undercarriage plate can be met.

Description

A kind of chassis of rail vehicle plate aluminium alloy production method

Technical field

The present invention relates to aluminium alloy technical field, relate in particular to a kind of chassis of rail vehicle plate aluminium alloy production method.

Background technology

Along with scientific and technical development, high ferro is widely applied in each city.The continuous speed-raising of rail vehicle, has proposed more and more higher requirement to the safe operation of vehicle, and wherein, the quality of chassis of rail vehicle plate has very important effect to the safe operation of vehicle.

In prior art, for the metallic substance of chassis of rail vehicle plate, tensile strength, yield strength and unit elongation are poor, can not meet the mechanical property requirements of chassis of rail vehicle plate when high-speed cruising.

Therefore, how to meet the requirement of high ferro underframe plate to tensile strength, yield strength and unit elongation, become those skilled in the art's important technological problems to be solved.

Summary of the invention

The invention provides a kind of chassis of rail vehicle plate aluminium alloy production method, the tensile strength of the aluminium alloy obtaining by the method, yield strength and unit elongation are higher, can meet the mechanical property requirements of high ferro underframe plate.

The invention provides a kind of chassis of rail vehicle plate aluminium alloy production method, comprising:

Press metal mass percent Si < 0.30%, Fe < 0.35%, Cu < 0.20%, 0.20% < Mn < 0.70%, Mg is 1.0%～2.0%, Cr < 0.30%, 4.0% < Zn < 5.0%, V < 0.1%, Ti < 0.2%, Zr < 0.25%, impurity < 0.15% and surplus are that Al prepares aluminium alloy stock,

Described aluminium alloy stock is melted and ingot casting processing.

Preferably, in described aluminium alloy stock, press metal mass percent Si < 0.25%, Fe < 0.25%, Cu < 0.15%, 0.30% < Mn < 0.60%, Mg is 1.5%～2.0%, 0.06 < Cr < 0.20%, 4.2% < Zn < 4.8%, 0.01% < V < 0.05%, 0.08 < Ti < 0.12%, 0.15 < Zr < 0.20%, impurity < 0.15%, surplus is Al.

Adopt aluminium alloy production method provided by the invention, the floor underframe for vehicle plate of formation, its tensile strength sigma b >=315MPa, yield strength σ s >=195MPa, unit elongation δ >=11%, therefore, this floor underframe for vehicle plate provided by the invention can meet mechanical property requirements.

Embodiment

This embodiment provides a kind of chassis of rail vehicle plate aluminium alloy production method, and the tensile strength of the aluminium alloy obtaining by the method, yield strength and unit elongation are higher, can meet the mechanical property requirements of high ferro underframe plate.

Below in conjunction with specific embodiment, the inventive method is described in detail.

Embodiment 1

Table 1

The aluminium alloy stock forming according to metal quality per-cent in table 1, aluminum alloy materials through fusing and ingot casting formation, its tensile strength sigma b is 375MPa, yield strength σ s is 255MPa, and unit elongation δ is 19%, therefore, this alloy material meets tensile strength sigma b >=315MPa, yield strength σ s >=195MPa, the condition of unit elongation δ >=11%, can meet the mechanical property requirements of high ferro underframe plate.

Embodiment 2

Table 2

The aluminium alloy stock forming according to metal quality per-cent in table 2, aluminum alloy materials through fusing and ingot casting formation, its tensile strength sigma b is 377MPa, yield strength σ s is 255MPa, and unit elongation δ is 19.2%, therefore, this alloy material meets tensile strength sigma b >=315MPa, yield strength σ s >=195MPa, the condition of unit elongation δ >=11%, can meet the mechanical property requirements of high ferro underframe plate.

Embodiment 3

Table 3

The aluminium alloy stock forming according to metal quality per-cent in table 3, aluminum alloy materials through fusing and ingot casting formation, its tensile strength sigma b is 380MPa, yield strength σ s is 263MPa, and unit elongation δ is 19.5%, therefore, this alloy material meets tensile strength sigma b >=315MPa, yield strength σ s >=195MPa, the condition of unit elongation δ >=11%, can meet the mechanical property requirements of high ferro underframe plate.

Embodiment 4

Table 4

The aluminium alloy stock forming according to metal quality per-cent in table 4, aluminum alloy materials through fusing and ingot casting formation, its tensile strength sigma b is 378MPa, yield strength σ s is 265MPa, and unit elongation δ is 19.5%, therefore, this alloy material meets tensile strength sigma b >=315MPa, yield strength σ s >=195MPa, the condition of unit elongation δ >=11%, can meet the mechanical property requirements of high ferro underframe plate.

Above a kind of chassis of rail vehicle plate provided by the present invention is described in detail by aluminium alloy production method, for one of ordinary skill in the art, thought according to the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. a chassis of rail vehicle plate aluminium alloy production method, is characterized in that, comprising:

Described aluminium alloy stock is melted and ingot casting processing.

2. chassis of rail vehicle plate aluminium alloy production method according to claim 1, it is characterized in that, in described aluminium alloy stock, press metal mass percent Si < 0.25%, Fe < 0.25%, Cu < 0.15%, 0.30% < Mn < 0.60%, Mg is 1.5%～2.0%, 0.06 < Cr < 0.20%, 4.2% < Zn < 4.8%, 0.01% < V < 0.05%, 0.08 < Ti < 0.12%, 0.15 < Zr < 0.20%, impurity < 0.15%, surplus is Al.