| 摘要 |
<p>1504937 Welding by pressure HILTI AG 4 Sept 1975 [30 Sept 1974] 36396/75 Heading B3R A stud welding gun has a tubular studreceiving holder 4 having two or more axially extending slots 7 forming resilient stud-holding fingers therebetween and of such size that the cross-section of the stud holder before slotting in the region of the slots is reduced by at least 12%. Preferably the slots are concave, present sharp finger edges at the inner surface of the holder, and have a width increasing towards the outer surface of the holder.</p> |
