Service life of tungsten electrodes in hyperbaric dry underwater welding - Service life diagrams were developed for two types of commonly used tungsten electrodes

Ozden H., GÜRSEL K. T.

WELDING JOURNAL, vol.84, no.6, 2005 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 84 Issue: 6
  • Publication Date: 2005
  • Journal Name: WELDING JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: service life, tungsten electrode, hyperbaric GTAW, underwater welding
  • Dokuz Eylül University Affiliated: No

Abstract

In hyperbaric dry underwater welding, the hyperbaric gas tungsten arc welding (GTAW) procedure offers many advantages. However, determination of the electrode service life is a substantial condition for good results in unmanned and computer-remote-controlled hyperbaric GTAW. Electrode service life is the time in which one electrode can be welded from a polished state to reaching a wear mark as an applied condition criterion under certain conditions. Extending electrode service life can drastically reduce the cost of the process; however, many influencing factors, as well as unpredictable occurrences during hyperbaric GTAW, make exact determination of the electrode service life more difficult. In this study, electrode service life was examined in the dependence on the electrode type, arc current, and arc power under different ambient pressure levels.