研究了50W470牌号无取向硅钢在热轧、正火、冷轧和退火过程中组织和织构演变。结果表明,热轧板表面为发生再结晶的细小等轴铁素体,主要织构为{110}<115>,过渡层和中心处以α纤维织构和较弱的γ纤维织构主。正火板的平均晶粒尺寸为90.5μm,正火减弱了热轧板中对磁性能不利的γ纤维织构。冷轧板织构为强的α纤维织构和较弱的γ纤维织构。退火板的平均晶粒尺寸为74.2μm,退火板织构主要是以{111}<112>取向为主的γ纤维织构,{100}和{110}面织构分别达到了7%和5.9%。正火50W470无取向硅钢的平均铁损P1.5/50和磁感B50分别达到了2.99 W/kg和1.725 T。 The microstructure and texture evolution of 50W470 non-oriented silicon steel during hot rolling, normalizing, cold rolling and annealing were studied. The results show that the surface of hot rolled plate is fine equiaxed ferrite recrystallized, the main texture is {110} <115>, and the transition layer and the center are α fiber texture and weaker γ fiber texture host. The average grain size of the normalized steel is 90.5 μm, and normalizing weakens the γ-fiber texture that is detrimental to the magnetic properties in the hot-rolled sheet. Cold-rolled sheet texture is a strong α-fiber texture and a weak γ-fiber texture. The average grain size of annealed sheet is 74.2μm. The texture of annealed sheet is mainly γ fiber texture with {111} <112> orientation. The texture of {100} and {110} %. The average iron loss P1.5 / 50 and magnetic induction B50 of normalized 50W470 non-oriented silicon steel reached 2.99 W / kg and 1.725 T, respectively.