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公开(公告)号：US3835284A
公开(公告)日：1974-09-10
申请号：US26551872
申请日：1972-06-23
Applicant: HILTI AG
CPC classification number: B23K9/202
Abstract: The surface of a metal workpiece, to which a capacitor discharge stud welding gun is to weld a stud, is precleaned by discharging the gun while it holds a tungsten or other high-melting-point electrode against the workpiece. This passes a stud-welding current pulse through the electrode and the workpiece. It causes a short explosive heating effect that tears up the surface of the workpiece and rips away the thus loosened contamination. It produces a clean metal surface whose extent corresponds to the diameter of the electrode. The magnitude and duration of the pulse are such as to have welded a stud with a lower melting point to the metal. The tungsten electrode may be replaced with titanium, niobium, zirconium, molybdenum etc. These have lower melting points and produce slight surface diffusion of these materials into the metal to form desirable alloys.
Abstract translation: 金属工件的表面，电容器放电螺柱焊枪用来焊接螺柱，通过在将钨或其他高熔点电极固定在工件上时将喷枪排出来进行预清洗。 这通过螺柱焊接电流脉冲通过电极和工件。 它会引起短暂的爆炸加热效应，从而撕裂工件的表面，并撕开如此松动的污染物。 它产生清洁的金属表面，其表面的面积对应于电极的直径。 脉冲的幅度和持续时间使得将具有较低熔点的螺柱焊接到金属。 钨电极可以被钛，铌，锆，钼等替代。这些钨电极具有较低的熔点并且使这些材料轻微地表面扩散到金属中以形成所需的合金。
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公开(公告)号：US3757080A
公开(公告)日：1973-09-04
申请号：US3757080D
申请日：1971-12-14
Applicant: HILTI AG
CPC classification number: H01R4/64 , Y10T24/44265 , Y10T24/44598
Abstract: A contact clamp for use in electrical welding is formed of a pair of arms arranged to be clamped to a workpiece. At least one of the arms has a pointed projection or cutting edge formed on its surface which contacts the workpiece for cutting through poorly conductive or non-conductive layers and assuring a satisfactory electrical contact between the clamp and the workpiece. A separate tightening screw can be used, extending through the end surface of one of the arms into contact with the workpiece. The pointed projection or cutting edge can be formed on the end of the tightening screw which contacts the workpiece.
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公开(公告)号：BE765267A
公开(公告)日：1971-08-30
申请号：BE765267
申请日：1971-04-05
Applicant: HILTI AG
Abstract: The surface of a metal workpiece, to which a capacitor discharge stud welding gun is to weld a stud, is precleaned by discharging the gun while it holds a tungsten or other high-melting-point electrode against the workpiece. This passes a stud-welding current pulse through the electrode and the workpiece. It causes a short explosion heating effect that tears up the surface of the workpiece and rips away the thus loosened contamination. It produces a clean metal surface whose extent corresponds to the diameter of the electrode. The magnitude and duration of the pulse are such as to have welded a stud with a lower melting point to the metal. The tungsten electrode may be replaced with titanium, niobium, zirconium, molybdenum, etc. These have lower melting points and produce slight surface diffusion of these materials into the metal to form desirable alloys.
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