Al-killed cold-rolled steel sheet with excellent...

Details Al-killed cold-rolled steel sheet with excellent... Al-killed cold-rolled steel sheet with excellent...

C - Chemistry, Metallurgy

21

D

148/10, 75/150,

C21D 9/52 (2006.01) C21D 9/46 (2006.01) C22C 38/06 (2006.01) H01J 9/02 (2006.01) H01J 29/07 (2006.01)

Patent

CA 1238802

Abstract An Al-killed cold-rolled steel sheet with excellent demagnetization characteristics is provided which is sub- stantially consisted of 0.005% or less C; from 0.05 to 0.50% Mn; 0.010% or less S; from 0.01 to 0.08% Sol.Al; 0.0050% or less N; wherein Mn%/S% 27 and (Sol.Al% - 0.003%)/N% ?6; and the remainder iron and inevitable impurities. A shadow mask made of such Al-killed cold-rolled steel sheet and a color television receiver using the same exhibit a very excellent function. A preferred process for producing such an Al-killed cold-rolled steel is also provided, said process being characterized in first obtaining a steel or a specific composition by the use of a vacuum degassing apparatus and then subjecting the steel to sequential steps of hot rolling, cold rolling, decarburization-annealing, and cold rolling.

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