Method of manufacturing of steel sheet for easy open end can...

Details Method of manufacturing of steel sheet for easy open end can... Method of manufacturing of steel sheet for easy open end can...

C - Chemistry, Metallurgy

21

D

80/51

C21D 7/10 (2006.01)

Patent

CA 1251955

Abstract of the Disclosure A method for manufacturing steel sheet for easy open end cans superior in openability comprising an improvement in the conventional process which includes the steps of hot rolling, first cold rolling, annealing and second cold rolling. The improvement resides in the operation of the second cold rolling reduction acording to the formula: 100-0.08x(C+1,000xP)- 0.8xH>R>20 and 45>R. This formula expresses the relationship between hardness, carbon content and cleanliness after annealing, wherein R: second cold reduction (%); C: carbon content after annealing (ppm); P: cleanliness after annealing (d60x400...%) H: hardness after annealing (Hr 30T).

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