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 -
Jan 18, 2007
filing date -
Feb 8, 2006
priority date (Note) -
Abandoned
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Abstract
The invention relates to a band (7) for protecting electrodes (6) of a spot-welding gun for welding metal sheets (3, 4), comprising a carrier material (24), wherein at least one electrically conductive layer (16) is provided on the side (15) facing the metal sheets (3, 4). At least two layers (16, 20) are provided on the metal-sheet side (15) of the carrier material (24) in order to create such a band (7) when welding aluminum and/or aluminum alloys, by means of which the contrast of the imprint (24) of the welding spot (13) can be increased and the electrode (6) can be protected optimally, wherein the outermost layer (16) is made of tin and the layer (20) arranged therebelow is made of nickel-phosphorous. Furthermore, on the carrier material (24), at least one adhesive layer (18, 26, 27) may be provided for the layers (16, 20) superimposed.
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