Laser/arc hybrid welding process for ferritic steels
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United States of America Patent
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Jul 10, 2007
Issued Date -
N/A
app pub date -
Jan 20, 2005
filing date -
Jan 21, 2004
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Expired
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Abstract
A method and an apparatus for a hybrid laser beam and electric arc welding process. A laser beam, an electric arc, a shielding gas and a consumable welding wire are used to create a weld on a steel work piece by melting the welding wire. The weld contains 30 to 1000 ppm titanium by weight, at least 0.7% manganese by weight, 50 to 1000 ppm oxygen by weight, and less than 10% nickel. The welding wire is either solid welding wire or cored welding wire, and may contain, in varying percentages: titanium, manganese, iron, nickel, boron, molybdenum, carbon or chromium.
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