STEEL STRIP WITH GOOD CHARACTERISTICS OF DEFORMABILITY AND METHOD FOR MAKING SUCH STRIP Russian patent published in 2003 - IPC

FIELD: manufacture of steel strip for making parts by deep drawing or by drawing with necking. SUBSTANCE: method comprises steps of subjecting hot rolled strip to etching, cold rolling by one or several operations at reduction degree consisting at least 86%; then applying at least on one side of strip plated coating containing nickel, cobalt, copper, ferrum, tin, indium, palladium, bismuth and(or) their alloys or coating clad by rolling and containing copper and(or) brass and(or) their alloys; annealing coiled strip and subjecting it to skin pass rolling if it is necessary. Hot rolled strip, preferably includes boron in quantity 0.0013 - 0.0060 mass % at mass ratio of boron and nitrogen in range 0.5 - 2.5. EFFECT: lowered manufacturing costs due to reduced number of working operations. 7 cl, 2 tbl