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Fusion casting and welding method for aluminum parent metal

A welding method and base metal technology are applied in the field of casting and welding of aluminum base materials, which can solve the problems of less investment in practical applications and achieve the effect of large economic benefits.

Active Publication Date: 2006-06-21
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to solve this problem, some related enterprises at home and abroad have also carried out many tests and developments, such as DC melting electrode argon arc welding, laser welding, high frequency welding, hot melt welding, hot flux welding, etc. under magnetic field offset and magnetic field shielding. , but these methods have some defects, and few of them have been put into practical application.

Method used

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  • Fusion casting and welding method for aluminum parent metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Welding of aluminum bus bars in electrolytic plants:

[0023] 1. Process the parts to be welded of the aluminum base material neatly;

[0024] 2. According to the shape of the welding joint required by the base metal to be welded, a casting cavity is made at the joint position. The casting chamber is made of steel plates as fixtures. Put fire-resistant and flame-retardant materials such as asbestos boards into the fixture. The fire-resistant and flame-retardant material is a mixture of asbestos board, water glass and asbestos wool or asbestos rope.

[0025] After tightening the fixture, fill the gap between the steel plate and the aluminum base metal to be welded with a mixture of water glass and asbestos wool or asbestos rope, so as to make it sealed and prevent the aluminum liquid from leaking out. The shape of the casting chamber can be cuboid or truss.

[0026] The reason why fire-resistant and flame-retardant materials are added to the surface of the steel plat...

Embodiment 2

[0036] Match casting aluminum alloy, according to its proportioning: silicon 14%, copper 10%, aluminum 76%, all the other processes are with embodiment one.

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Abstract

The aluminum base material fusion casting and welding process includes the dirt, oil eliminating and oxide film eliminating treatment of the aluminum base material surface to be welded; painting welding assistant to the surface; setting fusion casting cavity of refractory material in the welded location and heating the aluminum base material to 100-200 deg.c; smelting aluminum and aluminum alloy in certain ratio in a smelting apparatus and casting the melt into the fusion casting cavity to smelt base material metal, fill weld seam and complete welding. The welding method may be used in welding aluminum base material in strong magnetic field and welding damaged bus in aluminum electrolyzer without power-off and no influence on electrolytic aluminum production.

Description

Technical field: [0001] The invention relates to a casting and welding method of an aluminum parent material. Background technique: [0002] In the production of electrolytic aluminum, in order to improve the current efficiency and the output of aluminum, the current intensity of the aluminum electrolytic cell is on the rise. At present, the current intensity of the domestic aluminum electrolytic cell has reached 320KA. Such a large DC current produces a strong magnetic field in and around the electrolyzer, with a magnetic field strength exceeding 150GS. The conductive aluminum busbar of the electrolytic cell is often accidentally damaged during production. At present, the DC melting pole argon arc welding machine is mainly used for welding repair, but this welding method is very sensitive to the magnetic field. When the magnetic field strength exceeds 20GS, due to the strong welding arc magnetism Partial blowing, unable to weld normally. In order to be able to weld and re...

Claims

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Application Information

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IPC IPC(8): B22D19/10
Inventor 王胜利尹国勋程守勇阳志强付桂枝龙昌贵姚起飞谢勇吴刚范元素吕桂明袁华美韦玉伦陆清恒
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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