MUMBAI, India, May 30 -- Intellectual Property India has published a patent application (202517043570 A) filed by Hyundai Steel Company, Incheon, Republic of Korea, on May 5, for 'method for manufacturing non-oriented electrical steel sheet with excellent magnetic properties, and non-oriented electrical steel sheet manufactured thereby.'
Inventor(s) include Ahn, Yong Keun; and Yoo, Seong Hyeon.
The application for the patent was published on May 30, under issue no. 22/2025.
According to the abstract released by the Intellectual Property India: "Disclosed is an invention concerning a method for manufacturing non-oriented electrical steel sheets with excellent magnetic properties and the non-oriented electrical steel sheets produced thereby. In a specific embodiment, the method for manufacturing non-oriented electrical steel sheets with excellent magnetic properties includes the steps of: manufacturing a hot-rolled steel sheet using a slab containing 0.4-3.5 wt% of silicon (Si), 0 (exclusive) to 0.05 wt% (inclusive) of aluminum (Al), 0.002-3.5 wt% of austenite stabilizing elements, and the balance of iron (Fe) and other inevitable impurities; cold rolling the hot-rolled steel sheet to prepare a cold-rolled steel sheet; and cold-annealing the cold-rolled steel sheet, wherein the cold-annealing includes a primary heat treatment step of heating and maintaining the cold-rolled steel sheet up to the temperature of the austenite single-phase region; and a secondary heat treatment step of cooling and maintaining the primary heat-treated cold-rolled steel sheet down to the temperature of the ferrite and austenite dual-phase region."
The patent application was internationally filed on Oct. 20, 2023, under International application No.PCT/KR2023/016326.
Disclaimer: Curated by HT Syndication.
