High-silicon steel sheet and cryogenic pack rolling technology for preparing same
A high-silicon steel and sheet technology, applied in the field of steel rolling, can solve the problems of difficult cold rolling deformation, large deformation resistance, coarse grain size, etc. Effect
Active Publication Date: 2019-10-29
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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The invention relates to a high-silicon steel sheet and a cryogenic pack rolling technology for preparing same, and belongs to the technical field of steel rolling technologies. The high-silicon steelsheet comprises the following chemical components in percentage by weight: 6.91-6.98% of Si, 0.4-0.7% of Al, 0.008-0.02% of Y, 0.05-0.08% of Zr, less than 0.01% of C, less than 0.01% of Mn, less than0.01% of P, less than 0.01% of S, less than 0.003% of N, less than 0.003% of O, and the balance Fe; and the sheet is 0.1-0.15mm in thickness. The invention provides a microalloying method for addingheavy rare earth yttrium and zirconium eemnets to high-silicon steel to improve the plasticity. Under that basis, the high-silicon steel sheet is prepared by a novel technology combining asynchronouswarm rolling and deep cold rolling; grains are refined through microalloying of Y and Zr, and the generated ordered phases is reduced, so that the plasticity of the high-silicon steel sheet is improved, and the thickness of the high-silicon steel sheet is reduced by deep cold rolling, and as a result, the soft magnetic performance of a product is improved.
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