关键词: 取向硅钢, 低温板坯加热, 热轧板, 织构

Abstract: Studied both grain-oriented silicon steels (%: Nol- 0. 042C, 3. 16Si, 0. 009Al, 0. 07Mn, 0. 50Cu, 0.015S, 0.008 4N and No2- 0.040C, 3.20Si, 0.014A1, 0. 22Mn, 0.49Cu, 0. 016S, 0.008 2N) are melted by a 50 kg vacuum induction furnace, foiled to (mm) 350 x 120 x35 slab, heated at 1 250 ℃ for 30 min, with beginning rolling temperature 1 100℃. hot-rolled to 2.3 mm plate by 5 passes, finishing-rolled at 950 ~ 1 000 ℃. Test results show that the structure and texture along thickness of both hot-rolled plates are inhomogeneous: the subsurface layer is recrystallized structure which has a high Goss texture ； the central layer is deformed structure which has typical deformation texture. The subsurface layer {110} 〈001〉texture component in 0. 22% Mn No2 steel plate is weaker than that in 0. 07% Mn Nol steel plate, while the central layer {001} 〈110〉 texture component is greatly intensive than that in 0. 07% Mn Nol steel plate, led to difference of magnetic properties between both plates, the magnetic induction （B₈₀₀）and iron loss (P_1.7/50) of 0. 22% Mn No2 steel plate are respectively 1. 87 T and 1. 24 W/kg, while that of 0. 07% Mn Nol steel plate are respectively 1. 88 T and 1. 18 W/kg.