High-magnetic-induction low-iron-loss no-oriented silicon steel sheet and manufacturing method thereof

Abstract

The invention discloses a high-magnetic-induction low-iron-loss no-oriented silicon steel sheet and a manufacturing method thereof. The no-oriented silicon steel sheet is composed of, by mass, less than or equal to 0.005% of C, 0.1%-1.6% of Si, 0.1%-0.5% of Mn, less than or equal to 0.2% of P, less than or equal to 0.004% of S, less than or equal to 0.003% of Al, less than or equal to 0.005% of N, less than or equal to 0.004% of Nb, less than or equal to 0.004% of V, less than or equal to 0.003% of Ti, and the balance Fe and inevitable impurities, wherein 120<=Mn / S<=160, and Nb / 93+V / 51+Ti / 48+Al / 27<=C / 12+N / 14. After completion of molten steel casting, the cast blank furnace inlet temperature is adjusted through a temperature control mode, stable production of the high-magnetic-induction low-iron-loss no-oriented silicon steel sheet is effectively achieved, the manufacturing cost is relatively low, and normalizing treatment or bell-type furnace intermediate annealing is not needed.

Description

technical field [0001] The invention relates to a non-oriented silicon steel sheet, in particular to a non-oriented silicon steel sheet with high magnetic induction and low iron loss and its manufacturing method, especially to a high magnetic induction sheet with relatively low manufacturing cost without normalization treatment or intermediate annealing in a bell furnace. , Low iron loss non-oriented silicon steel sheet and its manufacturing method. Background technique [0002] In recent years, with the increasingly stringent demand for high efficiency, energy saving, and environmental protection in the user market, it is required that the non-oriented silicon steel sheet used for making motors, compressors, and EI iron core raw materials should have excellent quality under the premise of ensuring price competitiveness. Electromagnetic properties, commonly known as low iron loss and high magnetic induction, meet the urgent needs of these electrical products for high efficie...

AI Technical Summary

Problems solved by technology

[0005] At present, normalizing treatment or intermediate annealing in bell furnace is an effective method to improve the iron loss and magnetic induction of materials. It is widely used in the production of high-efficiency and high-grade non-oriented silicon steel sheets, which can effectively reduce the iron loss of materials and greatly The disadvantage of improving the magnetic induction of materials is the introduction of new production equipment, which greatly increases manufacturing costs, prolongs the manufacturing and delivery cycles of materials, and brings new troubles to production site technology and quality management.

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