METHOD OF ELECTRIC STEEL STRIP COATING WITH SEPARATOR FOR ANNEALING Russian patent published in 2003 - IPC

FIELD: methods of electric steel strip coating with oxide powder in capacity of separator for annealing. SUBSTANCE: coating is made by application of aqueous solution containing, mainly, MgO and additionally at least one additive including chlorine-containing compound. Added to aqueous solution as chloride-containing compound is ammonium chloride NH₄Cl or NH₄Cl•n H₂O. EFFECT: reduced losses for reversed magnetization, improved magnetic properties, excluded premature disintegration of nitride and/or sulfide inhibitors during phase of heating for finish annealing. 5 cl, 2 dwg, 5 tbl, 3 ex