METHOD FOR PRODUCING CAN MANUFACTURING STEEL SHEET

摘要

Disclosed is a method for producing can manufacturing steel sheet with which the steel sheet production cost is reduced by omitting a recrystallization annealing step, excessive strengthening caused by hardening with cold rolling is avoided, and variation in the sheet thickness in the length direction of the steel sheet coil is controlled. The steel components comprise, in mass%, C: 0.005% or less, Mn: 0.05-0.5%, Al: 0.01-0.10%, N: 0.0010-0.0070%, B: 0.15 × N to 0.75 × N (by atom ratio, 0.20 × N to 0.97 × N) and also comprise one or both of Nb: 4 × C to 20 × C (by atom ratio, 0.52 × C to 2.58 × C) and Ti: 2 × C to 10 × C (by atom ratio, 0.50 × C to 2.51 × C), with the remainder being Fe and unavoidable impurities. Said steel is formed into slabs by means of continuous casting. It is then hot rolled at a finishing temperature equal to or lower than the Ar3 transformation point, coiled and pickled, followed by cold rolling at a rolling reduction rate of 50-96%.