MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202617094490 A) filed by Jfe Steel Corporation on August 04, 2026, for Method For Producing Hot-Rolled Steel Sheet For Non-Oriented Electromagnetic Steel Sheet And Method For Producing Non-Oriented Electromagnetic Steel Sheet.
Inventors include Maruyama Shigehiro; Saito Hayato; and Okubo Tomoyuki.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: Proposed is a method for producing a hot-rolled steel sheet for a non-oriented electromagnetic steel sheet, the hot-rolled steel sheet being excellent in magnetic characteristics. In the method, a thin slab is hot-rolled. This production method comprises: casting molten steel containing, in mass%, C: = 0.010%, Si: 2.50-5.00%, Mn: 0.10-3.00%, P: = 0.100%, S: 0.0010-0.0050%, Al: = 2.00%, N: = 0.0080%, Cu: = 1.00%, Mo: = 0.050%, Zn: = 0.010%, and Ti: = 0.010%, with the balance being Fe and unavoidable impurities, into a steel slab having a prescribed thickness; subsequently heating the steel slab in a tunnel furnace, with the surface temperature of the steel slab at the exit of the tunnel furnace, the heating time in the tunnel furnace, and the cooling rate of the steel slab from the exit of the tunnel furnace to the entrance of the hot-rolling mill being within predetermined ranges; and subjecting the steel slab to hot-rolling, with the entrance temperature, exit temperature, strain rate during the first pass of the hot-rolling, and coil winding temperature for the hot-rolling mill being within predetermined ranges.
Disclaimer: Curated by HT Syndication.
