METHOD FOR SPOT WELDING OF PLATED STEEL SHEET - NIPPON STEEL & SUMITOMO METAL CORP

Title:

METHOD FOR SPOT WELDING OF PLATED STEEL SHEET

Document Type and Number:

WIPO Patent Application WO/2016/159169

Kind Code:

A1

Abstract:

Provided is a spot welding method with which liquid metal embrittlement cracking during spot welding of a plated steel sheet can be easily prevented, wherein the method is characterized in that, prior to spot welding, the plating is removed in at least: a range which is centered at the planned location where the center of the nugget is to be formed, the outer perimeter of the range including the interior of a circle inside the outside edge of the weld-affected part; or, from a superposition surface of the welded steel sheet, a range which has a center in common with the planned location at which the center of the nugget formed on the superposition surface of the welded steel sheet is to be formed, the outer perimeter of the range including the interior of a circle inside the outside edge of the weld-affected part.

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Inventors:

MIYAZAKI YASUNOBU (JP)
WATANABE FUMINORI (JP)
WAKABAYASHI CHISATO (JP)
HAYASHI KUNIO (JP)
KAWATA HIROYUKI (JP)
FURUSAKO SEIJI (JP)
MATSUI SHO (JP)

Application Number:

PCT/JP2016/060541

Publication Date:

October 06, 2016

Filing Date:

March 30, 2016

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

B23K11/34; B23K11/11; B23K11/16; B23K26/36

Foreign References:

JPS6343775A	1988-02-24
JP2004188495A	2004-07-08
JPS55139190A	1980-10-30

Other References: