Effect of Cold-rolling Mode on Microstructure,Texture and Magnetic Properties of 50W470 Steel

The influence of continuous cold rolling and reversible cold rolling processes on the microstructure,texture and magnetic properties of 50W470 steel had been investigated by metallographic microscope and XRD ray diffraction instrument.Optical observation showed that the average grain size of steel strip after annealing through continuous cold rolling was about 88 μm,while the value for reversible cold rolling was about 69 μm.The texture for bothcontinuous cold rolling and reversible cold rolling texture concentrated into α-fibre and γ-fible,the orientational density of the texture of continuous cold rolling and reversible cold rolling were obvious difference on α-fibre,Ø=15°bias {001} <110> and Ø=30°bias {112} <110>,while the orientational density of the γ-fible were small.The iron losses of steel sheet through continuous cold rolling was:P_1.5/50=2.94 W/kg,the magnetic induction was:B₅₀₀₀=1.729 T,while the iron losses for the reversible cold rolling was:P_1.5/50=3.04 W/kg,the magnetic induction was:B₅₀₀₀=1.729 T.