| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: according to procedure slab containing wt %: C from 0.01 to 0.12, Mn from 0.05 to 0.6, Si from 0.002 to 0.1, P 0.05 or less, S 0.03 or less, dissolved Al from 0.005 to 0.1, N 0.01 or less, Fe and unavoidable impurities - the rest. The slab is hot-rolled, etched and cold rolled with successive annealing of the sheet at temperature from 650 to 900C and cooling to temperature from 250 to 450C. The sheet is conditioned at this temperature during 120 min or more and further it is cooled to room temperature, etched, preliminary coated with Ni or Ni-Fe without intermediate pinch-rolling, heated at rate 5C/sec or more to temperature from 430 to 500C, galvanised in a galvanic bath, dried, heated at rate of temperature rise 20C/sec or higher to temperature from 460 to 550C without conditioning or with it during less, than 5 sec, cooled at rate 3C/sec or more and finish pinch-rolled with degree of elongation from 0.4 to 2 %. ^ EFFECT: improved processability, chipping and slipperiness. ^ 3 cl, 1 dwg, 3 tbl, 2 ex |
