High-magnetic-induction high-silicon non-oriented silicon steel plate and preparation method thereof

Abstract

The invention belongs to the field of electrical steel plate manufacture, particularly relates to a high-magnetic-induction high-silicon non-oriented silicon steel plate and a preparation method thereof. The high-magnetic-induction high-silicon non-oriented silicon steel plate comprises chemical components in percentage by weight as follows: 6.4%-6.6% of Si, 0.005%-0.02% of Ce, smaller than or equal to 0.005% of N, smaller than or equal to 0.003% of S, smaller than or equal to 0.02% of P, larger than or equal to 0.003% of O, smaller than or equal to 0.005% of C and the balance of Fe. The preparation method comprises steps as follows: firstly, molten steel is smelt, cast rolling is performed under protection of argon atmosphere, a high-silicon non-oriented steel strip is obtained and cooled to the temperature of 900-1,100 DEG C, then hot rolling is performed, a hot rolled plate with the thickness of 1.0-1.3 mm is obtained and cooled to the temperature of 150-500 DEG C, warm rolling is performed, then, acid pickling and annealing are performed, and the high-magnetic-induction high-silicon non-oriented silicon steel plate is obtained. According to the technical scheme, a microalloying element Ce is added, matched manufacture technologies combining cast rolling, hot rolling and warm rolling are adopted, and accordingly, the magnetic induction strength of the high-silicon non-oriented silicon steel plate is remarkably improved.

Description

technical field [0001] The invention belongs to the field of electrical steel plate manufacturing, in particular to a high magnetic induction high silicon non-oriented silicon steel plate and a preparation method thereof. Background technique [0002] Non-oriented electrical steel is widely used in iron core materials of electrical components such as motors, transformers and magnetic shielding. At present, the silicon content of non-oriented electrical steel produced and applied on a large scale is generally lower than 3.wt%. When the silicon content reaches 6.5.wt%, the comprehensive magnetic properties of non-oriented electrical steel will show extremely low mid-high frequency iron loss, nearly zero saturation magnetostriction, high magnetic permeability and low coercive force, especially suitable for Iron core materials for making low-noise, low-iron-loss transformers and motors have also become the first choice for high-frequency electronic components, and can even be a...

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a high magnetic induction high-silicon non-oriented silicon steel plate and its preparation method. The magnetic induction intensity is high, which solves the problems of complex production process, many manufacturing processes, high equipment requirements, high energy consumption, large environmental load, and unsatisfactory magnetic properties.

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