IMPROVEMENT OF MAGNETIC-PERMEABILITY IN PURE IRON SHEETS

Through metallurgical process research, texture improvements in view o f the preferential {100}[001] orientation remains the last way to reac h high magnetic performances in electrical steels. The influence of th e hot working process on the final properties is presented here and pr ovides evidence that the more the hot working lies in the ferritic tem perature range, the stronger is the roughly {100}[001] component, prob ably resulting from the minor texture component {111}[112] inherited f rom hot rolling at a low temperature. Optimization of cold rolling and final annealing is shown to be very important in obtaining a cube tex ture. The variations in the magnetic anisotropy torque peaks and textu re changes are perfectly correlated with magnetic measurements.