MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202617098553 A) filed by Nippon Steel Corporation on August 14, 2026, for Butt Weld Joint, Tailored Blank, And Method For Manufacturing Butt Weld Joint.
Inventors include Tokunaga Masatoshi; Ienari Toru; Murata Yoshimitsu; Sakamoto Teruki; and Tamezane Takumi.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: A butt weld joint having two high-strength steel plates and a weld metal that joins the high-strength steel plates to each other, said butt weld joint being characterized in that the high-strength steel plates include a normal section and a HAZ section that is adjacent to the weld metal, the normal section has a Vickers hardness of 372 HV or higher, the HAZ section has a HAZ hardened section that has a higher Vickers hardness than the normal section and a HAZ softened section that has a lower Vickers hardness than the normal section, the average width of the weld metal is 1.00-1.65 mm, and among the 500 gf load Vickers hardnesses when locations at 1/4 in the thickness direction of the high-strength steel plates from the surfaces of the high-strength steel plates are measured at 0.15 mm intervals, the average Vickers hardness of the weld metal is 60.00-83.00% of the maximum hardness of the HAZ hardened section.
Disclaimer: Curated by HT Syndication.
