Process for manufacturing grain-oriented magnetic steel spring

摘要: A method for the production of grain-oriented electric steel strip by continuous thin-slab casting, involves a hot-rolling stage on line-mounted multiple-stand milling train at 900-1200[deg]C, with reductions more than 40% in first pass and not 30% last rolling two-phase mixture range least second third passes.. based casting process, (a) melting containing (apart from iron unavoidable impurities) 2.5-4.0 wt% silicon, 0.02-0.10 carbon, 0.01-0.065 aluminum, 0.003-0.015 nitrogen, optionally up to 0.30 manganese, 0.05 titanium, 0.3 phosphorus, 0.04 sulfur and/or selenium (total), 0.2 (each) one or elements arsenic, tin, antimony, tellurium bismuth, 0.5 copper, nickel, chromium, cobalt molybdenum 0.012 boron, vanadium niobium, (b) secondary metallurgical processing melt vacuum unit pan furnace, (c) form strip, (d) cutting into thin slabs, (e) heating 1050-1300[deg]C 60 minutes an in-line (f) multiple stand mill give rolled thickness 0.5-4.0 mm, using temperature 900-1200[deg]C reduction 40%, (alpha - gamma ) next two passes pass, (g) cooling (h) coil, (i) annealing after coiling before cold-rolling, (j) cold-rolling cold-rolled final 0.15-0.50 (k) recrystallisation decarbonisation, (l) treating surface scale separator, (m) develop Goss structure, (n) optional coating electrical insulation followed stress-relieving (o) domain refinement.