The company encourages the staff to study the argon arc welding technology, free provides each kind of tool and the equipment studies the use for the staff.

A new type of argon tungsten pulsed arc welding machine has been introduced in this paper. The basic operating principle and technical characteristics has been analyzed.

This paper introduces the repair welding procedure for repairing an alumal casting piece of an oil pump cylinder, This method covers the shortages of AC argon arc weld and gas welding.