WHEEL NUT WITH WELDED CAP AND METHOD OF FORMING THE SAME

摘要

A stainless steel sheath for a wheel nut is welded to the nut body in limited areas by bringing electrodes into pressured contact with the conical nut end, which is unsheathed, and a section of the overlying the body. A capacitor then passes a short, low voltage, high current electric pulse through the electrodes to resistance weld the sheath to the body, beneath the sheath electrode without altering the metallurgy of the cap or the body.