A kind of non-oriented high-silicon steel sheet and its preparation method
A high-silicon steel and sheet technology, which is applied in the field of non-oriented high-silicon steel sheets and preparation, can solve the problems of increasing smelting difficulty, raw material cost, high iron loss, and inapplicability to high-silicon steel strips, etc., and achieves a wide range of product specifications and low cost. , the effect of excellent magnetic properties
Active Publication Date: 2018-06-26
武汉钢铁有限公司
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Problems solved by technology
However, the thickness of the product is limited to 0.20mm-0.50mm, which is not suitable for the preparation of thinner high-silicon steel strips. The iron loss of the product is relatively high, and the addition of alloy elements increases the difficulty of smelting and the cost of raw materials.
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[0025] The present invention is described in detail below:
[0026] Table 1 is the component value list of each embodiment of the present invention and comparative example;
[0027] Table 2 is the value list of the main process parameters of each embodiment of the present invention and comparative example;
[0028] Table 3 is a list of performance testing conditions of each embodiment of the present invention and comparative examples.
[0029] Each embodiment of the present invention is carried out according to the following steps.
[0030] 1) Smelting by conventional methods, casting and rolling after tapping, casting molten steel with a temperature of 1480-1550°C into a synchronous equal-diameter twin-roll casting and rolling machine under the protection of an anti-oxidation atmosphere, and controlling the casting and rolling speed at 25-50m / min, the thickness of the slab after casting and rolling is 1.8 ~3.0mm;
[0031] 2) Hot rolling is carried out under the protection...
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Abstract
The invention discloses a non-oriented high silicon steel sheet. The non-oriented high silicon steel sheet comprises the following components in percentage by weight: 6.0-7.0% of Si, N not more than 0.0025%, S not more than 0.005%, P not more than 0.02%, O not more than 0.004%, and C not more than 0.004%. A preparation method comprises the steps of: smelting and cast rolling, hot rolling, warm rolling, cold rolling, acid washing and continuous annealing. The non-oriented high silicon steel sheet is short in flow, low in cost, low in energy consumption, low in pollutant emission, high in yield, wider in product specification range and excellent in magnetic performance; the iron loss P1.0 / 400 is 7.78-9.62 W / kg; P0.2-5000 is 11.92-24.23 W / kg; and the magnetic induction B8 is 1.34-1.36 T.
Description
technical field [0001] The invention relates to a silicon steel plate and a preparation method thereof, in particular to a non-oriented high silicon steel thin plate and a preparation method thereof. Background technique [0002] High-silicon steel generally refers to Fe-Si alloys with a mass fraction of 4.5% to 6.7% Si, while general-purpose high-silicon steels refer to Fe-Si alloys with a mass fraction of 6.5% Si. Since Hadfield discovered that adding Si can improve the magnetic properties of steel in 1900, people have been trying to improve the magnetic properties of silicon steel by increasing the Si content in steel to reduce iron loss Pt. In 1928, A. Schulze found that the magnetostriction (λs) of Fe-Si alloy containing 6.5% Si was approximately zero. In 1942, Ruder (W.E.Ruder) pointed out that since the magnetic anisotropy constant K1 and λs of the Fe-Si alloy containing 6.5% Si are lower than those of the Fe-Si alloy containing 3% Si, and the resistivity ρ is higher...
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IPC IPC(8): C22C38/02C21D8/12
CPCC21D8/1222C21D8/1227C21D8/1233C21D8/1244C22C38/02
Inventor 黄景文张凤泉骆忠汉吴章汉曾春冯大军周茂金杜涛蔡俊王威
Owner 武汉钢铁有限公司