MUMBAI, India, June 30 -- Intellectual Property India has published a patent application (202617052009 A) filed by Jfe Steel Corporation on April 23, 2026, for Resistance Spot Welded Member, And Resistance Spot Welding Method For Same.
Inventors include Komine Shinsuke; Sawanishi Chikaumi; and Takashima Katsutoshi.
The application for the patent was published on June 26, 2026, under issue no. 26/2026.
Abstract: The purpose of the present invention is to provide a resistance spot welded member and a resistance spot welding method for the same. The present invention pertains to a resistance spot welded member in which two or more overlapping steel sheets are subjected to resistance spot welding. At least one of the two or more overlapping steel sheets is a Zn-based plated steel sheet. In a first sheet set that has the largest difference in tensile strength among the combinations in each of which the Zn-based plating is present between two steel sheets abutting in the vertical direction, the Fe concentration of a Fe-Zn alloy layer formed from a position that is 300 µm away from a nugget end to a position that is 700 µm away from the nugget end in the sheet width direction satisfies formulae (1) to (3). (1): 98=CFe (2): CFe={25×SiHigh×(CE1-CE2)}+{?+(gSheet/1.2)}+[{(SZn×dGB)0.5}/30]+{60+(C0Fe/3)} (3): |m|=0.10
Disclaimer: Curated by HT Syndication.
