溶接学会論文集
Print ISSN : 0288-4771
ティグ溶接における狭窄ノズルのアーク現象に及ぼす影響
小西 恭平茂田 正哉田中 学村田 彰久村田 唯介
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2014 年 32 巻 2 号 p. 47-51

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Effects of a constricted nozzle on the arc phenomena in Tungsten Inert Gas (TIG) welding process are investigated by numerical simulation. The obtained results show that the temperature and velocity of the arc plasma are increased by attaching an additional gas nozzle which is called "constricted nozzle". As a result, the iron vapor does not diffused upward but transported outward. In addition, the heat transfer to the base metal surface is enhanced.

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