MUMBAI, India, July 25 -- Intellectual Property India has published a patent application (202517060680 A) filed by Baoshan Iron And Steel Co. Ltd., Shanghai, on June 25, for 'plated gpa grade steel having excellent spot weldability and manufacturing method therefor.'
Inventor(s) include Pan Hua; Lei Ming; Wu Tianhai; Chen Meng; Gong Tao; and Jiang Haomin.
The application for the patent was published on July 25, under issue no. 30/2025.
According to the abstract released by the Intellectual Property India: "Disclosed in the present invention is a plated GPa grade steel having excellent spot weldability comprising a steel substrate and a zinc containing plating layer on the surface of the steel substrate. The steel substrate contains Fe and inevitable impurity elements and the steel substrate further contains the following chemical elements in percentage by mass: C: 0.18 0.22%; Si: 0.80 1.20%; Mn: 1.50 2.50%; Cr: 2.00 4.00%; and Al: 0.40 0.90%. Accordingly further disclosed in the present invention is a manufacturing method for the plated GPa grade steel having excellent spot weldability and the manufacturing method can be used for effectively preparing the described plated GPa grade steel having excellent spot weldability of the present invention. When the spot welding process is used for welding if a solder joint surface crack is generated the maximum length of the solder joint surface crack is less than 5% of the thickness of a plate."
The patent application was internationally filed on Jan. 10, 2024, under International application No.PCT/CN2024/071511.
Disclaimer: Curated by HT Syndication.
