METHOD OF PRODUCTING BLACK PLATE

摘要

A method for producing soft black plate comprises steps to; (i) eat slab that is obtd. by addn. of Cr(Cr/C=1.5-2) to steel having c:0.03- 0.06%, Mn:below 0.40%, Al:below 0.02%, Si: below 0.06%, P and S:below 0.015% up to 1250 deg.C; (ii) hot-rolling at the temp. (880 deg.C) and to wind at 650-720 deg.C; (iii) coldrolling by pressure fall-off rate of 80-90% and (iv) recrystallize -anneal in the continuous annealing furnace (for hand black plate) at 720-740 deg.C.