Spot welding electrode and method for welding coated metals therewith
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United States of America Patent
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Sep 20, 1994
Grant Date -
N/A
app pub date -
Sep 28, 1992
filing date -
Sep 28, 1992
priority date (Note) -
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Abstract
A spot welding electrode designed for welding coated metals such as galvanized steel and a method of welding coated metals using the spot welding electrode. The electrode includes a housing having a hollow cavity with an open end and a closed end. The cavity is surrounded by a cooling wall which has an outer surface and a parallel inner surface. The parallel surfaces provide a substantially improved and consistent cooling method for maintaining temperature at the electrode-workpiece interface below the melting point of the coating. The bulk of the heating during the weld cycle is focused at the interface of the workpiece.
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