Arc percussion welding a plated pin to a thin tab of...

Details Arc percussion welding a plated pin to a thin tab of... Arc percussion welding a plated pin to a thin tab of...

B - Operations, Transporting

23

K

327/71

B23K 9/22 (2006.01)

Patent

CA 1198175

ARC PERCUSSION WELDING A PLATED PIN TO A THIN TAB OF DISSIMILAR METAL Abstract of the Disclosure To obtain acceptable arc percussion welding of tin plated copper pins to thin brass strip members, the tin must be prevented from becoming trapped in the weld zone and gaseous and other forms of material also being trapped. By giving the end of a pin a smooth, hemispherical profile, the plasma arc is initiated at the center of the pin end and progressively moves radially outwards. This melts the tin plate layer and the tin is caused to flow radially outwards from the weld zone. The copper of the pin and brass of the strip then melt slightly and on impact welding is achieved. The outward flow of tin also assists in causing other undesirable elements being removed from the weld zone. - i -

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