Process for the electric welding of two weld parts
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United States of America Patent
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Sep 20, 1994
Grant Date -
N/A
app pub date -
Jan 7, 1993
filing date -
Jan 7, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a process for the electric welding of two weld parts by the flow of electric current through a welding point and the use of fluid such as an inert or protective gas to inhibit or prevent or eliminate oxidation at the welding point. The fluid is supplied through a continuous bore in one weld part and is directed toward the welding point, so that the fluid sweeps over the welding point radially from the bore. The fluid may be an inert gas such as argon or nitrogen, optionally mixed with carbon dioxide; alternatively the fluid may be aqueous liquid, the water being vaporized in the region of the welding point.
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