METHOD OF WELDING PLATED STEEL SHEET AND RAW STEEL SHEET AND METHOD OF WELDING VEHICLE DOOR SASH
First Claim
1. A method of spot-welding portions of a plated steel sheet and a raw steel sheet which are overlaid on each other, said spot-welding method comprising:
- preparing a flat electrode and a radius electrode serving as a pair of welding electrodes;
bringing said flat electrode and said radius electrode into contact with said portions of said plated steel sheet and said raw steel sheet, respectively, with said portions of said plated steel sheet and said raw steel sheet overlaid on each other; and
performing a spot-welding process by passing a welding current through said flat electrode and said radius electrode to spot-weld said portions of said plated steel sheet and said raw steel sheet to each other while applying pressure on said portions of said plated steel sheet and said raw steel sheet by said flat electrode and said radius electrode.
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Accused Products
Abstract
A method of spot-welding portions of a plated steel sheet and a raw steel sheet which are overlaid on each other, the spot-welding method includes preparing a flat electrode and a radius electrode serving as a pair of welding electrodes, bringing the flat electrode and the radius electrode into contact with the portions of the plated steel sheet and the raw steel sheet, respectively, with the portions of the plated steel sheet and the raw steel sheet overlaid on each other, and performing a spot-welding process by passing a welding current through the flat electrode and the radius electrode to spot-weld the portions of the plated steel sheet and the raw steel sheet to each other while applying pressure on the portions of the plated steel sheet and the raw steel sheet by the flat electrode and the radius electrode.
15 Citations
13 Claims
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1. A method of spot-welding portions of a plated steel sheet and a raw steel sheet which are overlaid on each other, said spot-welding method comprising:
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preparing a flat electrode and a radius electrode serving as a pair of welding electrodes; bringing said flat electrode and said radius electrode into contact with said portions of said plated steel sheet and said raw steel sheet, respectively, with said portions of said plated steel sheet and said raw steel sheet overlaid on each other; and performing a spot-welding process by passing a welding current through said flat electrode and said radius electrode to spot-weld said portions of said plated steel sheet and said raw steel sheet to each other while applying pressure on said portions of said plated steel sheet and said raw steel sheet by said flat electrode and said radius electrode. - View Dependent Claims (2, 3, 4)
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5. A method of spot-welding a vehicle door sash in which a pocket-like portion is formed from an inner member and an outer member and in which a spot welding process is performed on plate portions of said inner member and said outer member which are overlaid on each other to close said pocket-like portion, said spot-welding method comprising:
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preparing said inner member and said outer member which are made of a plated steel sheet and a raw steel sheet, respectively; preparing a flat electrode and a radius electrode serving as a pair of welding electrodes; bringing said flat electrode and said radius electrode into contact with said plate portions of said inner member and said outer member, which are made of said plated steel sheet and said raw steel sheet, respectively, with said portions of said plated steel sheet and said raw steel sheet overlaid on each other; and performing a spot-welding process by passing a welding current through said flat electrode and said radius electrode to spot-weld said plate portions to each other while applying pressure on said plate portions of said plated steel sheet and said raw steel sheet by said flat electrode and said radius electrode. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification