Method for laser welding of metal
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United States of America Patent
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Jun 14, 2005
Issued Date -
N/A
app pub date -
Mar 3, 2003
filing date -
Mar 3, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of welding at least two metal sheets protected by a zinc coating that has a low vaporizing temperature. The metal sheets are placed on top of each other and a head of a welding machine is passed over the sheets. The head of the welding machine is configured such that a laser is positioned in front of a GMAW welding or MIG brazing device. The laser cuts a channel into the metal sheets in order to allow the protective zinc coating to vaporize and escape. The GMAW welder or MIG brazing device then follows the laser and deposits a material that fills the channel to weld the two pieces together.
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