| 摘要 |
A stud welding gun wherein air pressure is employed to feed a stud into a collet which holds the stud against a work piece is provided with a collet held in a guide bushing and having a plurality of openings at a position wherein air used to feed the stud is forced into a space between the collet and flash shield. The air serves to clean the flash shield and the guide bushing of contaminate material.
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