Method of making non-oriented electrical steel sheets having...

Details Method of making non-oriented electrical steel sheets having... Method of making non-oriented electrical steel sheets having...

C - Chemistry, Metallurgy

21

D

148/8

C21D 8/12 (2006.01)

Patent

CA 1318577

ABSTRACT OF THE DISCLOSURE The present invention is to produce non-oriented electrical steel sheets having excellent magnetic properties in that a coiling is carried out at the low temperature for checking the amount of generating the scales, and a de-scaling is perfectly done after the hot rolling, and the de-scaled hot rolled sheet is annealed in the non-oxidizing atmosphere, thereby to control the oxidation and the nitriding as little as possible during annealing the hot rolled sheet, and by determining to be higher a heating temperature for hot rolling, a magnetic properties (a magnetic flux density) is improved, and the hot rolled sheet is practised with an open coil-annealing and annealing conditions therefor are specified in order to perfectly precipitate resolute AlN particles the heating and fully coarsen AlN particles.

603348

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