Method for cryogenic treatment of aluminium alloy resistance spot welding electrode

Abstract

A process for deep cold treatment of spot-welding electrode for Al alloy includes putting the Cu alloy electrodes in a container full of deep cold treating medium in a deep cold treater layer by layer, setting up parameters, deep cold treating, and restoring their temp to ordinary temp naturally. Its advantages are long service life elongated by once or more, no splash on welding and high welding quality.

Description

technical field

[0001] This invention relates to methods of altering the physical structure of non-ferrous alloys. Background technique

[0002] With the rapid development of the global automobile industry, the energy crisis and environmental pollution have become urgent problems to be solved in various countries. The world is advocating green engineering and sustainable development strategies. In order to reduce energy consumption and environmental pollution, the development of light cars has become one of the important trends in the development of the automobile industry. The use of aluminum alloy body is one of the important measures to reduce the weight of automobiles.

[0003] Aluminum and aluminum alloys have the advantages of high specific strength, corrosion resistance and good deformation ability in the atmospheric environment. In many fields, especially in the fields of automobile manufacturing, home appliances and aerospace, the use of alu...