Process for seam welding an overlapping sheet-metal seam
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United States of America Patent
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Apr 22, 1997
Issued Date -
N/A
app pub date -
May 17, 1995
filing date -
Jun 3, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a seam welding process for overlapping sheets, in particular for welding can bodies, the welding force is momentarily reduced upon each insertion of a can body between the welding rollers. This keeps the welding pressure constant even at the start of a can body. In this way the power input to the sheet can be kept constant even at the start of a can body, and the weld quality even at the start of a can body satisfies requirements.
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