| 摘要 |
PROBLEM TO BE SOLVED: To provide a nozzle which is easily handled and capable of executing the welding work, and safely and efficiently executing the welding irrespective of the skill of a welding worker in the semiautomatic arc welding. SOLUTION: In the nozzle 1 of a semiautomatic arc welding machine, a fore end of the nozzle comprises a section 3 which can be directly brought into contact with a workpiece during the welding, and projected to the same position as that of a fore end of a welding wire or projected over the fore end of the welding wire, and a section which allows gas 6 to escape, and is not brought into contact with the workpiece during the welding to avoid any build-up part. COPYRIGHT: (C)2010,JPO&INPIT
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