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

fYear

2010

fDate

25-27 June 2010

Firstpage

5889

Lastpage

5891

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6880-5

Type

conf

DOI

10.1109/iCECE.2010.1478

Filename

5630489