WELDED CAN BODY, WELDED CAN, METHOD OF MANUFACTURING WELDED CAN BODY, AND METHOD OF MANUFACTURING WELDED CAN
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United States of America Patent
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Nov 5, 2015
app pub date -
Jan 24, 2014
filing date -
Jan 29, 2013
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This welded can body is constituted of a steel plate material formed from a tin-free steel plate or a resin coated steel plate wherein a tin-free steel plate is coated with a resin, overlapping corresponding parts with each other, and forming a weld part by resistance welding of the overlapped parts. Laser processing parts formed on at least one of four surfaces made up of two surfaces constituting electrode contact surfaces on sides that contact an electrode (A) during resistance welding and two surfaces constituting joining surfaces on sides where the steel plate material is joined together, have laser irradiation parts, wherein laser irradiation is carried out before resistance welding to eliminate chrome plating and expose the steel plate, separately disposed on parts to be welded to become the weld parts, on the steel plate material.
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