MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202517080786 A) filed by Nippon Steel Corporation, Tokyo, on Aug. 26, for 'non-oriented electromagnetic steel sheet and method for manufacturing same.'
Inventor(s) include Natori, Yoshiaki; Yashiki, Hiroyoshi; Murakawa, Tesshu; and Fukuchi, Minako.
The application for the patent was published on Sept. 12, under issue no. 37/2025.
According to the abstract released by the Intellectual Property India: "Provided is a non-oriented electromagnetic steel sheet which, despite having high strength, has excellent magnetic properties and superior punching workability. The non-oriented electromagnetic steel sheet of the present invention has a TS higher than 580 MPa and satisfies formula (1) when P120/Fe700, which is the ratio of a peak-to-peak value P120 of P near electron energy of 120eV to a peak-to-peak value Fe700 of Fe near electron energy of 700 eV in an Auger differential spectrum obtained in a grain boundary region of a fracture surface, is defined as [P]GB, and when P120/Fe700, which is the ratio of P120 to Fe700 of an Auger differential spectrum obtained in the intragrain region of the fracture surface, is defined as [P]IG. A difference ?S between TS and YP is equal to or less than 110 MPa, and an average crystal grain diameter D (m) satisfies formula (2). Formula (1): [P]GB/[P]IG2.0. Formula (2): D?100-15 [P]GB/[P]IG+1500/TS."
The patent application was internationally filed on Feb. 14, 2024, under International application No.PCT/JP2024/005121.
Disclaimer: Curated by HT Syndication.
