| 摘要 |
The object is to facilitate replacement of consumable parts, such as the electrode, nozzle, or the like, in a plasma torch, whilst suppressing any increase in structural complexity or cost. An electrode 103, insulating guide 105 and nozzle 107 are fit together installed in a retainer cap 113. By means of O-rings 193, 195, 197, the electrode 103, insulating guide 105, nozzle 107 and retainer cap 113 are coupled together by a coupling force which allows the components to be pulled apart and separated manually. By attaching the retainer cap 113 to the torch main unit and detaching the retainer cap 113 from same, the electrode 103, insulating guide 105 and nozzle 107 can be attached and detached to and from the torch main unit, simultaneously.
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