A new arc welding-quality analyzer developed by University of Hanover of Germany could be used in the statistical analysis on the value of the arc voltages and welding current,and could provide some relative information on physical property of welding arc,it was a new method of analyzing welding electrical parameters.

Study on the effect of the ZA alloy TIG flux on the weld formation and welding arc;

Variable polarity TIG welding arc dynamic analyzer;

Spectral space character of welding arc and its applications;

A comprehensive discussion is given to arc welding technologies easy to complete semi_automatic and automatic welding and the application of arc welding in automatic industry is analysed based on practical examples.