In the non directivity electromagnetic steel sheet and its production mannered null weight proportion which are superior in shaft pressing in

摘要

PROBLEM TO BE SOLVED: To prevent the damaging of a shaft in the case of the press-fitting into the shaft while securing prescribed magnetic properties in a nonoriented silicon steel sheet as the stock for producing an inexpensive mass-produced article such as a rotor of a compact motor or the like. ;SOLUTION: Through decarburizing treatment and deoxidizing treatment in a converter, tapping is executed, next, secondary refining in a ladle is executed, after the control of the components or simultaneously with the control of the components, sulfur components are added thereto to form into the following steel compsn., and, moreover, a continuous casting or ingot-making stage and a rolling state are executed: ≤0.015 C, ≤2.5% Si, ≤1.5% Mn, 0.005 to 0.050% S, 0.0005 to 1.5% sol.Al, 0.005 to 0.15% P, ≤0.008% N, and the balance Fe with inevitable impurities.;COPYRIGHT: (C)2000,JPO