Process and apparatus for welding sheet metal edges
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United States of America Patent
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-
Oct 22, 1996
Issued Date -
N/A
app pub date -
Dec 9, 1994
filing date -
Dec 15, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Sheet metal edges to be welded are preheated prior to welding. At a given welding speed, this results in a smaller temperature gradient in the material to be welded. Consequently the welding speed can be increased, or material which would otherwise provide poor weld quality can be welded at a high temperature gradient. The preheating is carried out for example by high-frequency excitation of the material to be welded.
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