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Non-oriented silicon steel for new energy driving motor and production method of non-oriented silicon steel

A technology of oriented silicon steel and driving motor, which is applied in metal rolling, temperature control, etc., can solve the problem of deteriorating the magnetic properties of non-oriented silicon steel, achieve the effects of reducing the thickness of iron oxide scale, low cost, and avoiding cracks and fractures

Active Publication Date: 2022-03-18
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In combination with the above, it can be seen that the increase of these alloy elements will deteriorate the magnetic properties of non-oriented silicon steel

Method used

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  • Non-oriented silicon steel for new energy driving motor and production method of non-oriented silicon steel
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Embodiment Construction

[0024] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0025] In the present invention, there is provided an outless silicon steel. The chemical ingredient of the no-to-rejection silicon steel comprises: Si: 2.95% ~ 3.15%, Al: 0.75% ~ 0.95%, Si + 2Al: 4.6% ~ 4.9%, Mn: 0.5% ~ 0.7%, SN: 0.03 % ~ 0.04%, CU ≤ 0.03%, CR ≤ 0.03%, Ni ≤ 0.03%, Cr + Ni + Cu ≤ 0.07%, NB ≤ 0.004%, V ≤ 0.004%, Ti ≤ 0.004%, NB + V + Ti ≤ 0.008%, C ≤ 0.0025%, P ≤ 0.015%, s ≤ 0.0015%, N ≤ 0.004%, C + S + N ≤ 0.007%, the rest is Fe and inevitable inclusion; and, Mn / s ≥ 380, Al / N≥200.

[0026] Among them, the role and effects of each element in the chemical composition are described below.

[0027] C, S, N, Cu, CR, Ni, Nb, V, Ti, and P: The increase in the content of these elements can result in a decrease in magnetic properties of no toilet silicon steel, including the increase in iron loss, and the magnetic induction strength is red...

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Abstract

The invention discloses non-oriented silicon steel for a new energy driving motor and a production method of the non-oriented silicon steel. The silicon steel is prepared through the steps of steelmaking, continuous casting, hot rolling, normalizing, acid pickling, preheating-free single-rack cold rolling, annealing, cooling, coating and finishing in sequence, Cu, Cr, Ni, Nb, V and Ti are not added in the steelmaking process, and the silicon steel comprises the chemical components of 2.95%-3.15% of Si, 0.75%-0.95% of Al, 4.6%-4.9% of Si + 2Al, 0.5%-0.7% of Mn, 0.03%-0.04% of Sn, smaller than or equal to 0.0025% of C and the balance iron; mn / S > = 380, and Al / N > = 200. According to the invention, the strength is improved while the magnetic performance is ensured, the problem of consideration of the magnetic performance and the strength in the prior art is solved, and the application requirement on a driving motor of a new energy automobile can be met.

Description

Technical field [0001] The present invention belongs to the technical field of steel material preparation, and it is related to non-replenishing silicon steel for new energy drive motors and its production methods. Background technique [0002] Non-tie silicon steel is a core material of electric motor and generator rotor working in a rotating magnetic field, requires good magnetic properties, including lower iron loss and higher magnetic induction strength, and improvement in magnetic properties is also the skilled in the art. Since the core research topic of no toilet silicon steel. Typically, in terms of chemical components, the addition of a series of alloy elements such as Cu, Cr, Ni, Nb, V, and Ti will typically restrict the addition of the alloy elements such as Cu, Cr, Nb, V, and Ti to avoid deterioration of the magnetic properties of these alloy elements and the magnetic properties of the non-replenishing silicon steel. [0003] With the rapid development of new energy v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/06C22C38/04C22C33/04C21D8/12C21D1/26B21B1/46B21B37/74
CPCC22C38/02C22C38/04C22C38/008C22C33/04C21D8/1222C21D8/1272C22C38/06C22C38/004C21D8/1233C21D1/26B21B1/463B21B37/74C21D6/008C21D9/46C21D6/005C21D8/0226C21D8/12C22C38/34C22C38/12C22C38/14C22C38/08
Inventor 岳重祥钱红伟吴圣杰詹东方
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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