| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a steel sheet for internal magnetic shield in a cathode ray tube having less anisotropy and excellent magnetic characteristic to consistently improve the drift of electron beam landing. SOLUTION: In the method for manufacturing the steel sheet for internal magnetic shield in the cathode ray tube which is manufactured with the blackening treatment on a surface after press-forming, a hot-rolled plate having the composition containing, by mass, 0.01-0.03% C,≤0.05% Si,≤0.05% P,≤0.5% Mn,≤0.01% S, 0.02-0.06% Al, 0.003-0.008% N, and the balance Fe with inevitable impurities is pickled, and cold-rolled at a cold-rolling ratio of≥85%, and subjected to box-annealing at≤730°C, and further subjected to temper rolling with a draft of 0.1-2.0%. COPYRIGHT: (C)2005,JPO&NCIPI
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