Method for laser welding steel sheets and composite material
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United States of America Patent
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app pub date -
Jun 30, 2004
filing date -
Jul 2, 2003
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Abstract
A method for laser welding steel sheets in which a gas mixture comprising at least one of argon, helium and nitrogen, and 20 to 50% by volume of a carbon dioxide gas, or a gas mixture comprising at least one of argon, helium and nitrogen, 10 to 40% by volume of a carbon dioxide gas and 1 to 5% by volume of an oxygen gas is used as a shield gas.
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