| abstract |
[PROBLEMS] There is no deterioration of corrosion resistance and water resistance even without the inclusion of a chromium compound, and it is excellent in powder blowing resistance, scratch resistance, sticking property, TIG weldability and punching property, and also in appearance after strain relief annealing. An electrical steel sheet with an excellent semi-organic insulating coating is provided. In a semi-organic insulating film comprising an inorganic component and an organic resin, Zr compound, B compound and Si compound are each used as the inorganic component in a ratio in the dry film, Zr compound (in terms of ZrO 2 ): 20 to 70 Mass%, B compound (converted to B 2 O 3 ): 0.1 to 5 mass%, Si compound (converted to SiO 2 ): 10 to 50 mass%, and the balance is made to contain an organic resin. [Selection figure] None |