Grain-oriented silicon steel and stress coating therefor

Details Grain-oriented silicon steel and stress coating therefor Grain-oriented silicon steel and stress coating therefor

C - Chemistry, Metallurgy

21

D

148/18

C21D 8/12 (2006.01) C23C 22/33 (2006.01) C23C 22/74 (2006.01) H01F 1/147 (2006.01)

Patent

CA 1278985

ABSTRACT OF THE DISCLOSURE An improvement in a stress coating composition containing colloidal silica, metal phosphate and hexavalent chromium for application to grain-oriented silicon steels after final high temperature texture annealing to develop tensile stress in the steel is provided by replacing 5 to 50% of said colloidal silica with finely powdered silica to increase the viscosity of the stress coating composition and permit the coating to be applied in a uniform and controlled coating thickness to the silcon steel in strip form.

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