Effect of Annealing on Low-carbon and Low-silicon Non-oriented Silicon Steel Produced by TSCR

The effect of annealing at 850~1 000℃ on structure, precipitate, texture and magnetic properties of 0.5 mm low-carbon and low-silicon cold-rolled non-oriented silicon steel produced by TSCR has been researched.Meanwhile, the impact of annealing at 950℃×5 min and 950℃×7 min has been compared.The results show that the grain size increased and became more uniformity with increasing annealing temperature and prolonging annealing time.So the iron loss decreased and the magnetic induction increased.The main precipitates were coarse AlN and mulriple precipitation of MnS.There was no less than 0.1μm small dispersion of AlN and MnS.The surface of annealed cold rolled sheets was relatively strong γ fiber texture which is harmful to magnetic induction, while the γ fiber texture weakens obviously in the center of it.The {001}〈010〉 cubic texture enhanced and {110}〈001〉 gauss texture basically remained unchanged in the center of annealed cold rolled sheets.