| 摘要 |
PURPOSE: A cooling water supply method for a cutter is provided to improve the cutting quality of a cutter and prevent damage to the cutter because a cooling water pipe is inserted into a cutting torch. CONSTITUTION: A cutter includes a melting type cutting nozzle and a water injection nozzle which cools and resolidifies a part cut by the cutting nozzle. A cooling water supply method of the cutter is characterized in that the pipe of the water injection nozzle is inserted in a gas torch, instead of being exposed outside.
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