Patent ID: 6109336
Filing Date: 2000-08-29
Classification: B21B,C21D

Abstract:
A method for the manufacture of steel strip or sheet, suitable for use as deep-drawing steel for the manufacture of cans by deep-drawing and ironing, comprising the steps of:(i) forming a liquid low carbon steel into a cast slab having a thickness of less than 100 mm by means of a continuous casting machine,(ii) rolling said slab in the austenitic region while making use of the casting heat to reduce its thickness of a transfer thickness,(iii) cooling the rolled slab from step (ii) having said transfer thickness into the ferritic region,(iv) rolling the rolled slab from step (iii) in the ferritic region to a finished thickness,wherein said transfer thickness is less than 1.5 mm and the total thickness reduction in the ferritic region from said transfer thickness to said finished thickness is less than 90% and more than 75%.