For AZ31 and AZ61 magnesium alloy, effects of activating fluxes with hybrid component on weld forming in the a - TIG butt joint welding of are studied.

This paper studied mainly multi-T joint test data. By analysis test data, gave experience equation for transverse distortion of T-joint welding structure.

A moving utensil for portable ultrasonic probe which is made of chargeable electronic screwdriver is introduced, and it can be used to assist detector to detect steel butt-joint welding seam.