BAND FOR PROTECTING ELECTRODES OF A SPOT-WELDING GUN
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United States of America Patent
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app pub date -
Jul 25, 2012
filing date -
Feb 8, 2006
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Abstract
A band for protecting electrodes of a spot-welding gun for welding metal sheets includes a carrier material. At least one electrically conductive layer is provided on the side facing the metal sheets. At least two layers are provided on the metal-sheet side of the carrier material in order to create such a band when welding aluminum and/or aluminum alloys, via which the contrast of the imprint of the welding spot can be increased and the electrode can be protected optimally. The outermost layer is made of tin and the layer arranged therebelow is made of nickel-phosphorous. Furthermore, on the carrier material, at least one adhesive layer may be provided for the layers superimposed.
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