Practice with argon arc welding of tungsten electrode to repair 1# turbine rotor;

Study on the argon arc welding technological performance of antirust Al-alloy materials used in the locomotive;

5%)on impact toughness of argon arc welding deposit were studied by the instrumented impact test,SEM and mircostructure examination.

Research on separating TIG inverter welding machine;

The TIG Inverter Welder Based on Soft-Switching Technology;

Development of process control system of TIG equipment;

Analysis and preventive of fracture in 5A06 aluminium alloy fuel tank with manual TIG welding technology;

Choice of technique parameters of TIG welding and prevention of welding defect;

The argon filled mode of TIG welding are regulated to ensure welding process without back oxidation based on analysis on the stainless steel of large tubes characteristics.

GTAW TECHNOLOGY OF Φ18 mm x 3MM 20~# PRESSURE GAUGE TUBE;

The GTAW was used to weld AM50 magnesium alloy.

In this thesis, the influence of welding factors (welding current, surface coating and oxide film, shielding gas, welding wire, post weld heat treatment) on geometry and quality of welded joints of gas tungsten arc (GTAW) welded magnesium alloy AZ31 plates with 1.

The friction stir welding of 2mm thick 01420 Al-Li alloy was conducted,the microstructures,qualities of joining,and mechanical properties of the joints as well as the influences of welding parameters on the alloy were investigated,meanwhile comparing the mechanical properties with that of the joint welded by argon arc welding.

It also gave the reason of the crack which is produced in the splice welded seam, and madea clear summary of the practice in controlling the technical process of argon arc welding.

The technology of microcomputer monitor system which applied in argon arc welding procedure of the manufacture of automatically activated primary Zn AgO batteries was introduced.