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Manufacturing method of aluminum alloy plate for train compartment

A technology of aluminum alloy sheet material and manufacturing method, which is applied in the field of manufacturing aluminum alloy sheet materials for train carriages, and can solve problems such as low non-proportional elongation strength, hot-rolled cracking of 5383 alloy sheet materials, deformation and warping of sheet materials, etc., so that it is not easily deformed and warped bending, not easy to hot rolling cracking, high elongation strength effect

Active Publication Date: 2007-09-19
NORTHEAST LIGHT ALLOY CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for manufacturing aluminum alloy sheets for train carriages, so as to solve the problems of hot-rolled cracking, low non-proportional elongation strength, and deformation and warping of the 5383 alloy sheets in large-scale industrial production.

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  • Manufacturing method of aluminum alloy plate for train compartment
  • Manufacturing method of aluminum alloy plate for train compartment
  • Manufacturing method of aluminum alloy plate for train compartment

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specific Embodiment approach 1

[0006] Specific embodiment 1: The plate of this embodiment is composed of the following components by weight: Si≤0.25%, Fe≤0.25%, Cu≤0.20%, Mn: 0.7-1.0%, Mg: 4.0-5.2%, Cr≤0.25% , Zn≤0.40%, Ti≤0.15%, Zr≤0.20%, single impurity≤0.05%, total impurity≤0.15%, and the rest is Al.

[0007] The manufacture of plates is completed through the following steps: 1. Melting and casting alloy ingots: raw materials are aluminum, electrolytic copper, magnesium ingots, zinc ingots, zirconium salts (ie K 2 ZrF 6 ), Al-Mn alloy (ie Al-11%Mn) and Al-Cr (ie Al-4%Cr) alloy, casting tools coated with TiO 2 For protection, when the raw materials are loaded into the furnace, aluminum, zirconium salt, Al-Mn alloy and Al-Cr alloy are first loaded, and after the furnace material is melted to produce a liquid level, electrolytic copper and zinc ingots are added and the two are not exposed to the liquid level. The temperature in the furnace reaches Add magnesium ingots at 740°C and stir thoroughly, then ad...

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Abstract

The invention relates to a method for producing aluminium alloy plates for body of train. The invention solves the problem that 5380 alloy plates have the crack in hot rolling process, low non-proportional extended intansity, buckling deformation in the machining. The plates comprises, based on weight percentage, Si <= 0.25%, Fe <= 0.25%, Cu <= 0.20%, Mn: 0.7-1.0%, Mg: 4.0-5.2%, Cr <= 0.25%, Zn <= 0.40%, Ti <= 0.15%, Zr <= 0.20%, and the residuel of Al. The method for producing includes tha steps of : smelting and casting alloy cast ingot; homogenizing annealing at the temperature of 450-480 DEG C for 35 hours; hot rolling at the temperature of 450-480 DEG C; cold rolling to reach the thichness of the plates; stabilizing treatment at the temperature of 80-100 DEG C for 6 hours.

Description

technical field [0001] The invention relates to a method for manufacturing aluminum alloy plates for train carriages. Background technique [0002] Replacing the steel structural material of the original railway wagon carriage with aluminum alloy sheet can significantly reduce the weight of the carriage body. Under the same traction force, each carriage can increase the load capacity by about 4 tons. The alloy with the brand name of 5383 belongs to the Al-Mg series alloy, which has certain formability and corrosion resistance, and is now mainly used for the manufacture of tanks, etc. Although the strength and weldability of 5383 alloy are higher than those of 5083 and other alloys, there are problems such as hot rolling cracking, low non-proportional elongation strength, and deformation and warping of plates during mechanical processing in large-scale industrial production. Contents of the invention [0003] The purpose of the present invention is to provide a method for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C21/08C22C1/02C22F1/047
Inventor 钟利徐忠艳聂波吴欣凤祈艳华陶志民王国军李广宇
Owner NORTHEAST LIGHT ALLOY CO LTD
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