Abstract: The process for 0.30 mm sheet of conventional grain-oriented silicon steel (/% ： 0.03-0.05C, 3.0Si, 0.065-0.080Mn, 0.004-0.007P, 0.018-0.025S, 0.02Cu) produced by two-stage fold rolling and inter annealing from 2.20-2.30 mm hot rolled plate has been studied to focus analysis on the effect of chemical composition ( C, Mn, S, P) , heating temperature ( 1350-1400 °C and 1200-1320 °C ) , use of normalizing process, second cold rolling reduction (56%-62% ) and secondary recrystallization temperature (900-1000 °C ) on iron loss P₁₇ and magnetic induction B₈ of conventional grain-oriented silicon steel. Results show that the effect of chemical composition, heating temperature and secondary recrystallization temperature on magnetic properties of conventional grain-oriented silicon steel is obvious, and the normalization process and cold rolling process plate thickness on magnetic properties of steel is not appreciable ； for conventional grain-oriented silicon steel the suitable range of chemical composition is (/%：) 0.03-0.05C, 2.9-3.1Si, 0.05-0.10Mn, 0.015- 0.03S, the heating temperature for hot rolling is 〜1380 °C , finishing rolling at 930 ~ 960 °C , secondary recrystallization temperature 〜950 °C .

Key words: Conventional Grain-Oriented Silicon Steel, Chemical Composition, Secondary Recrystallization Temperature, Magnetic Properties

摘要： 研究了普通取向硅钢(/%:0.03～0.05C、3.0Si、0.065～0.080Mn、0.004～0.007P、0.018～0.025S、0.02Cu)2.20～2.30mm热轧板经二次冷轧和中间退火生产0.30mm板的工艺过程。重点分析了化学成分(C、Mn、S、P)、加热温度(1350～1400℃，1200~1320℃)、常化工艺、二次冷轧压下率(56%～62%)和二次再结晶温度(900～1000℃)对普通取向硅钢铁损P₁₇和磁感应强度B₈的影响。结果表明,化学成分,加热温度和二次再结晶温度对普通取向硅钢的磁性能影响较大,常化工艺和中间板厚对钢的磁性影响不显著;普通取向硅钢合适的主要成分的范围为(/%):0.03～0.05C、2.9～3.1Si、0.05～0.10Mn、0.015～0.03S,热轧加热温度～1380℃,终轧930～960℃,二次再结晶温度～950℃。

关键词: 普通取向硅钢, 化学成分, 二次再结晶温度, 磁性能