Title :
Research on GTAW Arc Behavior under High Pressure
Author :
Wang, Zhonghui ; Jiao, Xiangdong ; Zhou, Canftng ; Chen, Jiaqing ; Xue, Long
Author_Institution :
Dept. of Mech. Eng., Beijing Inst. of Petro-Chem. Technol., Beijing, China
Abstract :
Underwater hyperbaric welding is firstly used by the offshore industry. It is welding under extreme condition. Arc is much influenced by water depth or ambient pressure. But arc behavior greatly influence quality of joints. Influence of ambient pressure on arc behavior (geometry, stability, voltage, current density, temperature and efficiency) is investigated. Experiment is carried out in chamber. The results show that arc voltage is increased with the ambient pressure, and current density is increased with the ambient pressure, arc brightness is increased, but arc temperature is decreased. Suggestions for the research on arc are put forward.
Keywords :
arc welding; GTAW arc behavior; ambient pressure.But; arc temperature; arc voltage; brightness; current density; joint quality; offshore industry.lt; underwater hyperbaric welding; water depth; Control engineering; Geometry; Helium; IEEE Computer Society; Industries; Maintenance engineering; Welding; ambient pressure; arc; hyperbaric welding;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.1478
