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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    No. 3    June 2007

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Effect of activating flux on arc shape and arc voltage in tungsten inert gas welding
LI Qing-ming(李清明), WANG Xin-hong(王新洪),
ZOU Zeng-da(邹增大), WU Jun(吴 军)

School of Materials Science and Engineering, Shandong University,
Ji’nan 250061, China

Abstract:The effects of activating fluxes on welding arc were investigated. A special set of water-cooling system and stainless steel were used as parent material. During welding process, high-speed camera system and oscillograph were used for capturing instantaneous arc shape and arc voltage respectively. The experimental results indicate that the SiO2 flux can increase the arc voltage, while TiO2 has no this effect on arc voltage. Compared with conventional tungsten inert gas welding (C-TIG), it is found that the arc shape of A-TIG welding used with the SiO2 flux has changed obviously.

 

Key words: welding arc; activating flux; arc shape; arc voltage; stainless steel

ISSN 1672-7029
CN 43-1423/U

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