From Tungsten Electrodes to GTAW Arc Stability Test Results in High Pressure

GTAW - Gas Tungsten Arc Weld, also called Tungsten Inert Gas, TIG for short.

The following part will describe something about results on GTAW Arc Stability Test Results in High Pressure.

(1) To carry out the experiment, GTAW test apparatus for the high pressure environment appliance is designed, the apparatus consists of seven parts, they are: a high pressure gas pipeline system, high pressure gas deployment tank, high pressure welding test chamber, the welding process high-speed picture pick-up system, high pressure gas control system, cabin inner scene and welding process monitoring system and all-position automatic welder.

 (2) The test is arc stability test carried out under high pressure, the results shows that, at the condition of 0.2 / 0.4 / 0.7MPa, GTAW arc can burn steadily.

(3) The test also showed that several factors what influence the arc stability, including the state of the workpiece surface, tungsten electrode, and a shielding gas effect. Tungsten electrode damage will seriously affect the stability of the arc.

Arc stability refers to the degree that arc remains stable combustion without causing broken arc, drift and arc blow.



 

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