Method for manufacturing aluminum alloy profiles for side walls of rail transit vehicles

An aluminum alloy profile and rail transit technology, applied in the field of aluminum alloy manufacturing, can solve the problems of many welds, performance decline, and production efficiency disclosure, and achieve obvious economic benefits, reduce manufacturing costs, and reduce production costs.

Inactive Publication Date: 2012-06-20
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the cross-section of the aluminum alloy profile for the side wall of the rail transit car body is relatively small, which causes more welds, increased welding deformation, and difficult assembly; and welding will cause performance degradation, and more welding processes Will cause the performance of the entire vehicle body to decline
Moreover, the production process of the side wall of the rail t

Method used

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  • Method for manufacturing aluminum alloy profiles for side walls of rail transit vehicles
  • Method for manufacturing aluminum alloy profiles for side walls of rail transit vehicles
  • Method for manufacturing aluminum alloy profiles for side walls of rail transit vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, the manufacturing method of the aluminum alloy profile for the side wall of the rail transit vehicle body of the present embodiment comprises the following steps:

[0022] a. Cast rod ingredients: 6005A alloy is used, and the mass percentage of elements meets the following requirements;

[0023] the element

Si

Mg

Fe

Cu

mn

Cr

Ti

Zn

other

Al

content

0.75

0.45

0.30

0.20

0.30

0.10

0.10

0.10

0.10

the remaining

[0024] b. Casting rod smelting: Put the ingredients into the melting furnace in turn for smelting. The furnace is controlled at 760°C, and the flux is used for refining and covering; after 30 minutes of feeding, when aluminum water appears in the furnace, start stirring, and then refining, grilling After the slag has qualified components, the molten aluminum is injected from the melting furnace into the holding furnace, and the ...

Embodiment 2

[0033] Embodiment 2, the manufacturing method of the aluminum alloy profile for the rail transit car body side wall of the present embodiment, comprises the following steps:

[0034] a. Cast rod ingredients: 6005A alloy is used, and the mass percentage of elements meets the following requirements;

[0035] the element

Si

Mg

Fe

Cu

mn

Cr

Ti

Zn

other

Al

content

0.85

0.35

0.25

0.15

0.30

0.10

0.10

0.10

0.10

the remaining

[0036] b. Casting rod smelting: Put the ingredients into the melting furnace in turn for smelting. The furnace is controlled at 720°C, and the flux is used for refining and covering; after 60 minutes of feeding, when aluminum water appears in the furnace, start stirring, and then refining, grilling After the slag has qualified components, pour the molten aluminum from the smelting furnace into the holding furnace, keep the furnace tempera...

Embodiment 3

[0045] Embodiment 3, the manufacturing method of the aluminum alloy profile for rail transit car body side wall of the present embodiment, comprises the following steps:

[0046] a. Cast rod ingredients: 6005A alloy is used, and the mass percentage of elements meets the following requirements;

[0047] the element

Si

Mg

Fe

Cu

mn

Cr

Ti

Zn

other

Al

content

0.8

0.4

0.30

0.15

0.25

0.08

0.08

0.09

0.09

the remaining

[0048] b. Casting rod smelting: Put the ingredients into the smelting furnace in turn for smelting. The furnace is controlled at 740°C and covered with a flux for refining; after 45 minutes of feeding, when aluminum water appears in the furnace, start stirring, and then refining, grill After the slag has qualified components, pour the molten aluminum from the smelting furnace into the holding furnace, keep the furnace temperature at 740°C for 2...

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Abstract

The invention discloses a method for manufacturing aluminum alloy profiles for side walls of rail transit vehicles, which includes steps of a, billet batching, b, billet smelting, c, billet casting, d, homogenizing, e, billet surface treatment, f, billet heating, g, mould heating, h, extruding, i, online quenching, and j, profile aging. Parameters of the processing steps are controlled well. Larger sections and better comprehensive properties of aluminum profiles can be achieved, requirements of the aluminum profiles on vehicle use are met, vehicle manufacturing cost is lowered, vehicle weight can be reduced, and the shortages of heavy weight, high maintenance difficulty, high auxiliary equipment cost and the like of the steel-structured vehicles are overcome. In addition, energy consumption in manufacture by the method is only one fifth of that in stainless manufacture, water consumption is only one fifth of that in manufacture of stainless steel cars, and weight of the cars is reduced by one third. Proof strength of non-proportional extension can reach more than 255MPa, tensile strength can reach more than 300MPa, and elongation after facture can reach more than 11%.

Description

technical field [0001] The invention relates to the field of aluminum alloy manufacturing, in particular to a method for manufacturing an aluminum alloy section material for a side wall of a rail transit vehicle body. Background technique [0002] In the era of rapid development of high-speed railways, for more than ten years, domestic and foreign countries have been discussing about the development of high-speed railways, which is better to use aluminum alloy or stainless steel as the material of the carriage floor? Through the test, it is found that the use of aluminum alloy profiles can initially meet the requirements. However, in the prior art, the cross-section of the aluminum alloy profile for the side wall of the rail transit car body is relatively small, which causes more welds, increased welding deformation, and difficult assembly; and welding will cause performance degradation, and more welding processes It will cause the decline of the performance of the whole ve...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22F1/043
Inventor 李鹏伟孙巍刘兆伟王周兵杜连欢
Owner CHINA ZHONGWANG
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