MUMBAI, India, June 30 -- Intellectual Property India has published a patent application (202617052018 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 having a resistance spot welded part 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 plated steel sheet. In a first sheet set that has the largest difference in tensile strength between two steel sheets abutting in the vertical direction, the average thickness of a Fe-Zn alloy layer that has a Fe concentration of 70-95 mass% and a Zn concentration of 5-30 mass% and that is formed in a region located within 300-500 µm from a nugget end in the sheet width direction satisfies formula (1). (1): tFe-Zn=SiHigh×(Ms1- Ms2)1/2×0.5+(?+8×gSheet)/5
Disclaimer: Curated by HT Syndication.
