Method for preparing compound element processed non-oriented silicon steel for high-efficiency motor
A high-efficiency technology for oriented silicon steel, which is applied in the field of preparation of non-oriented silicon steel for high-efficiency motors, can solve the problems of reduced magnetic induction intensity, and achieve the effects of stable magnetic performance, high magnetic induction intensity, and low iron loss
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[0029] In order to further understand the contents of the present invention, the present invention will be further described below in conjunction with the examples.
[0030] The chemical composition (by weight percentage) of the non-oriented silicon steel for high-efficiency motors treated with compound elements of the present invention is: C≤0.005%, Si: 0.8%-1.7%, Mn: 0.3%-0.6%, Al: 0.2 %~0.4%, P≤0.015%, S≤0.004%, N≤0.004%, T[O]≤0.003%, La: 0.003%~0.015%, Ca: 0.0015%~0.0025%, B: 0.001%~0.004 %, the rest is Fe and unavoidable impurities.
[0031] The embodiment of the present invention and the comparative example are prepared according to the following process steps and technical parameters: (1) adopt vacuum induction furnace smelting according to the above-mentioned composition and cast into 6.5kg steel ingot; (2) ingot is heated in the muffle furnace of 1150 ℃ and Heat preservation for 1h, then forge into a billet of 80mm×70mm×L; (3) After the billet is soaked at 1180°C, it...
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