Invention Grant
- Patent Title: TIG welding equipment and TIG welding methods
- Patent Title (中): TIG焊接设备和TIG焊接方法
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Application No.: US11673983Application Date: 2007-02-12
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Publication No.: US07915560B2Publication Date: 2011-03-29
- Inventor: Toyoyuki Satou , Koji Nakamura , Yutaka Kimura , Hidetoshi Fujii , Shanping Lu , Kiyoshi Nogi
- Applicant: Toyoyuki Satou , Koji Nakamura , Yutaka Kimura , Hidetoshi Fujii , Shanping Lu , Kiyoshi Nogi
- Applicant Address: JP Tokyo
- Assignee: Taiyo Nippon Sanso Corporation
- Current Assignee: Taiyo Nippon Sanso Corporation
- Current Assignee Address: JP Tokyo
- Agency: Kilpatrick Townsend & Stockton LLP
- Priority: JP2003-076318 20030319
- Main IPC: B23K37/00
- IPC: B23K37/00
Abstract:
The TIG welding methods of the present invention include generating an electric arc between an electrode and an object to weld the object, wherein a first shielding gas including an inert gas flows toward the welded object surrounding the electrode, a second shielding gas containing an oxidative gas flows toward the welded object along a periphery of the first shielding gas, and the concentration of the oxidative gas in the second shielding gas is set such that the oxygen concentration in the welded metal portion of the welded object is within a range of 70 to 220 wt. ppm.
Public/Granted literature
- US20080296269A1 TIG WELDING EQUIPMENT AND TIG WELDING METHODS Public/Granted day:2008-12-04
Information query
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