STOCK FOR SHADOW MASK, PRODUCTION METHOD THEREFOR, SHADOW MASK CONSISTING OF THE STOCK FOR SHADOW MASK AND PICTURE TUBE INCORPORATED WITH THE SHADOW MASK

摘要

PROBLEM TO BE SOLVED: To provide a stock for a shadow mask which has excellent tensile strength and magnetic properties, to provide a production method therefor, to provide a shadow mask consisting of the stock for a shadow mask, and to provide a picture tube incorporated with the shadow mask.;SOLUTION: A slab having components comprising, by weight, ≤0.004% C, ≤0.03% Si, 0.1 to 0.5% Mn, ≤0.02% P, ≤0.02% S, 0.01 to 0.07% Al, ≤0.0040% N, ≤0.01% B, ≤0.1% Nb and 0.0001 to 0.1% Ti, and the balance Fe with inevitable impurities is subjected to hot rolling, pickling and cold rolling. Thereafter, the residual C content is controlled to ≤0.003% in a continuous annealing stage or a box type annealing stage. Further, secondary cold rolling is performed at a rolling ratio of 20 to 92% to obtain the stock for a shadow mask.;COPYRIGHT: (C)2004,JPO