公开(公告)号：US20200176156A1

公开(公告)日：2020-06-04

申请号：US16628983

申请日：2018-07-13

Applicant: NIPPON STEEL CORPORATION

Inventor： Shinsuke TAKATANI ,  Shunsuke OKUMURA ,  Shohji NAGANO ,  Takashi KATAOKA

IPC: H01F1/147 ,  C22C38/20 ,  C22C38/34

Abstract: A grain-oriented electrical steel sheet includes: a steel sheet; an oxide layer including SiO2 that is formed on the steel sheet; and a tension-insulation coating that is formed on the oxide layer, in which the steel sheet includes, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80% to 7.00%, Mn: 1.00% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0% to 0.80%, N: 0% to 0.012%, P: 0% to 0.50%, Ni: 0% to 1.00%, Sn: 0% to 0.30%, Sb: 0% to 0.30%, and a remainder of Fe and impurities, the tension-insulation coating includes a chromium compound, and the Fe content in the oxide layer and the tension-insulation coating is 70 mg/m2 to 250 mg/m2.