| 摘要 |
PROBLEM TO BE SOLVED: To obtain a gas pressure welding burner which is improved in safety and durability by preventing backfire and also protecting nozzle tips from obstacles. SOLUTION: In the gas pressure welding burner comprising a fork-shaped gas introducing tube (11) having a pair of branch tubes (11a) and many nozzle tips (12) which are projected in the opposed direction to the branch tubes (11a), heat insulating materials (14) are provided on the facing side of the branch tubes (11a), the heat insulating material (14) is held on the branch tubes (11a) with metallic plates (15) having heat resistance and also the nose of the nozzle tip (12) is opened to the outside. The metallic plate (15) is taken as a stainless steel plate and the outer periphery of the nose part of the nozzle tip (12) is surrounded with the metallic plate. COPYRIGHT: (C)2007,JPO&INPIT
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