Electrolytic tank aluminum bus and soft tape electric heat-release welding method

A technology of exothermic welding and aluminum busbar, which is applied in the field of aluminum electrolysis, can solve problems such as welding difficulties, achieve the effects of reducing repair costs, saving costs, and improving economic benefits

Inactive Publication Date: 2013-03-27
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Original technology: using argon arc welding machine to repair and weld the aluminum busbar and soft belt of the electrolytic cell are seriously affected by the strong magnetic field, the larger the current, the stronger the magnetic field, and the welding is about difficult
Especially large electrolyzers cannot be welded without power off

Method used

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  • Electrolytic tank aluminum bus and soft tape electric heat-release welding method
  • Electrolytic tank aluminum bus and soft tape electric heat-release welding method
  • Electrolytic tank aluminum bus and soft tape electric heat-release welding method

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Embodiment 1

[0095] The method of the invention is based on the principle of exothermic welding, and the aluminum bus bar of the 200kA electrolytic cell and the soft belt live welding mold are designed and successfully carried out the live welding.

[0096] Electrolytic cell aluminum busbar and soft strip live exothermic welding method:

[0097] 1. Mold design for live repair aluminum busbar and aluminum soft strip

[0098] The material of the soft strip busbar and the busbar is aluminum, so the research on the live repair of the soft busbar is to realize aluminum-aluminum welding.

[0099] ) selection of crucible material

[0100] The crucible is one of the basic tools for exothermic welding. It is mainly used to accommodate flux for thermite reaction. The temperature of thermite reaction in the crucible is very high, generally above 2000°C. At the same time, it is accompanied by strong boiling. Therefore, the crucible material or lining material is required to have high refractorines...

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Abstract

The invention relates to the technical field of aluminum electrolysis, and particularly relates to an electrolytic tank electric aluminum bus and aluminum soft tape damage re-welding repairing method. The electric heat-release welding method comprises the following steps of: 1) selection of crucible materials; 2) preparation of a crucible die; 3) preparation of a welding die; 4) preparation of a pouring piece and a blocking piece; and 5) welding. The method provided by the invention designs a 200kA electrolytic tank aluminum bus and soft band electric welding die by use of the heat-release welding principle and successfully performs electric welding. Through the method provided by the invention, the electrolytic tank aluminum bus and soft band electric welding can be performed for an electrolytic tank by a heat-release welding mode without cutting power, and the power cut of the electrolytic tank is not required, thus the cost can be saved, and the repairing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to a method for rewelding and repairing damaged live aluminum busbars and aluminum soft strips in an electrolytic cell. Background technique [0002] In the aluminum industry, after the aluminum busbar and soft strip of the electrolytic cell are damaged, the electrolytic cell is usually overhauled by argon arc welding machine bundle by bundle (one bundle is usually spot-welded by 10 pieces of 1mm aluminum soft strap) or piece by piece. . After the production tank is damaged, it is also welded by using the gap between the electrolytic tank's power-off, roasting and power-off. [0003] The original technology: using argon arc welding machine to repair and weld the aluminum busbar and soft belt of the electrolytic cell are seriously affected by the strong magnetic field. The larger the current, the stronger the magnetic field, and the welding is about difficult. Especia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K23/00C25C3/16
Inventor 张耀海张爱新王平朱革新安华师伟祁文青张国林
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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