Visualization of submerged arc welding phenomena by X-ray observation and direct observation

Hisaya Komen, Yohei Abe, Takahiro Fujimoto, Masaya Shigeta, Mitsuyoshi Nakatani, Manabu Tanaka

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Behaviors of flux, slag and molten metal during a submerged arc welding with a large current were observed by the X-ray observation system including a high speed video camera. Moreover, the direct observation using a high speed video camera was also carried out to observe the arc phenomena, which could not be observed by the X-ray observation. From X-ray observation results, the weld part during a submerged arc welding was classified broadly into 4 regions. Then, it was clarified that a slag was pushed backward in a welding direction when it approached to a wire which an arc plasma existed around. As a result of this series of slag behaviors, the preformed cavity was filled by the slag at the backward of the heat source. In addition, from a direct observation, it was made clear that there were bluish white plasma at beneath a molten metal droplet and orange emitting region around the plasma.

本文言語English
ページ(範囲)9-12
ページ数4
ジャーナルYosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
36
4
DOI
出版ステータスPublished - 2018
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 表面、皮膜および薄膜
  • 金属および合金

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