Investigation of Shielding Gas Supplying Method in Vertical-position Laser Welding of Pure Titanium

Kazuo Yokohara, Yasuhiro Okamoto, Akira Okada, Hikotaro Ochiai, Ryosuke Kimura, Shozo Ono, Masayuki Akase

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


Effective shielding method for a wide area is required in the vertical-position remote laser welding of pure titanium. Therefore, shielding effects of ring-type nozzles with two layers for a wide area were numerically and experimentally investigated in the vertical-position setup of workpiece with argon gas. Prevention of incoming air flow outside a ring-type nozzle is effective to increase mass fraction of argon gas. Mass fraction of argon gas could be increased using a ring-type nozzle, in which shielding gas is supplied by open-side injection ports of proper angle at a proper flow ratio of two jetting layers.

Original languageEnglish
Pages (from-to)448-453
Number of pages6
JournalProcedia CIRP
Publication statusPublished - 2016
Event18th CIRP Conference on Electro Physical and Chemical Machining, ISEM 2016 - Tokyo, Japan
Duration: Apr 18 2016Apr 22 2016


  • nozzle shape
  • oxidation
  • pure titanium
  • remote welding
  • ring-type nozzle
  • shielding gas
  • vertical-position

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering


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