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Aluminum alloy section for rail traffic car body skirtboard and manufacturing method of aluminum alloy section

A technology of aluminum alloy profiles and rail transit, which is applied in the direction of manufacturing tools, metal extrusion control equipment, metal extrusion, etc., can solve the problems of many waste products, difficult size, large deformation, etc., to reduce manufacturing costs, reduce unnecessary The effect of pass rate and good mechanical properties

Inactive Publication Date: 2017-11-07
SHANDONG NANSHAN ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the existing rail transit car body skirt is relatively complex, hollow, thin and long (about 2m in length)
[0003] In the existing technology, the control range of each link in the extrusion process of aluminum alloy profiles for rail transit car body skirts is relatively wide, and the control of the heat treatment process is difficult, and the prepared aluminum alloy profiles are prone to defects such as distortion and deformation during the heat treatment process , has a great influence on the size and mechanical properties of the skirt plate, and cannot guarantee that the dimensions of each wall of the aluminum alloy profile are qualified, resulting in poor uniformity and stability of the rail transit car body skirt plate made of the aluminum alloy profile, and deformation during the extrusion process The quantity is large, the size is not easy to control, and the mechanical properties cannot meet the requirements
In addition, the use of existing aluminum alloy profiles to process rail transit car body skirts will produce more waste products, which directly leads to low production efficiency and high production energy consumption

Method used

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  • Aluminum alloy section for rail traffic car body skirtboard and manufacturing method of aluminum alloy section
  • Aluminum alloy section for rail traffic car body skirtboard and manufacturing method of aluminum alloy section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] This embodiment provides an aluminum alloy profile for a rail transit car body skirt plate, which is obtained by the following manufacturing method:

[0059] a. Melting: put pure electrolytic aluminum liquid into a pouring melting furnace, add other alloy element components for melting, the melting temperature is 745°C, completely melt the raw materials, and obtain a uniform aluminum alloy melt, control The melt is composed of the following alloying elements by weight fraction: Si: 0.57%, Fe: 0.10%, Cu: 0.13%, Mn: 0.18%, Mg: 0.58%, Cr: 0.11%, Zn: 0.08%, Ti : 0.02%, Mn+Cr: 0.28%, other individual elements ≤ 0.05%, the total amount of other impurity elements ≤ 0.15%, the balance is Al.

[0060] b. Refining treatment: transfer the above melt to the holding furnace, and adjust the temperature of the melt to 740°C for refining treatment in the furnace: the volume ratio of the argon-chlorine mixed gas introduced is 75% for argon and 75% for chlorine 25%, the rotor speed is 3...

Embodiment 2

[0073]This embodiment provides an aluminum alloy profile for a rail transit car body skirt, the manufacturing method of the aluminum alloy profile for a rail transit car body skirt is roughly the same as that in Example 1, the difference lies in: this embodiment The melt in it, and the subsequent casting rods are composed of the following alloying elements by weight fraction: Si: 0.65%, Fe: 0.20%, Cu: 0.15%, Mn: 0.23%, Mg: 0.68%, Cr : 0.17%, Zn: 0.15%, Ti: 0.04%, Mn+Cr: 0.4%, other individual elements ≤ 0.05%, the total amount of other impurity elements ≤ 0.15%, the balance is Al, and finally the rail transit car body skirt Aluminum alloy profiles for panels.

Embodiment 3

[0075] This embodiment provides an aluminum alloy profile for a rail transit car body skirt, the manufacturing method of the aluminum alloy profile for a rail transit car body skirt is roughly the same as that in Example 1, the difference lies in: this embodiment The exit speed of the extruded profile used in the middle extrusion step is 2.4m / min, and finally the aluminum alloy profile for the rail transit car body skirt is obtained.

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Abstract

An aluminum alloy profile for a rail transit car body skirt and a manufacturing method thereof, relating to the technical field of preparation of aluminum alloy profiles, the manufacturing method of the aluminum alloy profile for a rail transit car body skirt includes the following steps: alloy smelting, refining treatment, Casting into rods, sawing of cast rods, homogenization annealing, surface peeling of cast rods, heating of cast rods, extrusion, online quenching, stretching straightening, sawing, surface shaping, artificial aging, the manufacturing method strictly controls the process steps Each parameter can be mass-produced with qualified wall dimensions and good mechanical properties, meeting the strength requirements of aluminum alloy materials for rail transit car body skirts; the prepared aluminum alloy profiles for rail transit car body skirts can be specially used The production of rail transit car body skirts can reduce the occurrence of unqualified rates, improve production efficiency, and reduce manufacturing costs.

Description

technical field [0001] The invention relates to the technical field of preparation of aluminum alloy profiles, and in particular to an aluminum alloy profile for a rail transit car body skirt and a manufacturing method thereof. Background technique [0002] Aluminum alloy materials have the characteristics of low density, good corrosion resistance, high strength and easy processing, and have been widely used in the production of aluminum alloy car bodies for rail vehicles. Rail transit car body skirt is mainly composed of welded aluminum alloy extruded profiles, which meets the requirements of strength while ensuring light weight and aesthetics. The shape of the existing rail transit car body skirt is relatively complex, hollow, thin and long (about 2m in length). [0003] In the existing technology, the control range of each link in the extrusion process of aluminum alloy profiles for rail transit car body skirts is relatively wide, and the control of the heat treatment li...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C21/08C22C1/02C22C1/06C22F1/043C22F1/047C22F1/05B21C31/00B21D3/12
CPCC22C21/02B21C31/00B21D3/12C22C1/026C22C1/06C22C21/08C22F1/002C22F1/043C22F1/047C22F1/05
Inventor 程仁策姜海涛马军星王岗赵海滨杨亚平史春丽阎昭辉张启东
Owner SHANDONG NANSHAN ALUMINUM
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