Hybrid arc/laser welding with earth contactor position control
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United States of America Patent
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-
Aug 19, 2003
Issued Date -
N/A
app pub date -
May 31, 2001
filing date -
May 31, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Hybrid welding process using a laser beam and an electric arc to produce a weld bead. The electric arc is established between an electrode connected to a first pole of a current source and at least one workpiece to be welded and connected to a second pole of a current source via at least one electrically conducting earth contactor in contact with the workpiece to be welded. To obtain effective welding, a contact is made between the earth contactor and the workpiece to be welded laterally and/or upstream of the point of impingement of the electric arc on the workpiece(s) to be welded, and considering the direction of formation of the welded joint, so as to balance the forces associated with the induced electromagnetic field acting on the puddle of liquid metal.
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