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Non-oriented electrical steel and preparing method and application thereof

A technology of oriented electrical steel and chemistry, which is applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of low yield of non-oriented electrical steel and easy occurrence of broken belts, etc.

Active Publication Date: 2020-04-24
SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a non-oriented electrical steel and its preparation method and application. On the premise of ensuring that the non-oriented electric tool has good comprehensive performance, it solves the problem of electrical steel used as the motor iron core in the prior art. Steel is prone to broken strips during production, which leads to the problem of low yield of non-oriented electrical steel

Method used

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  • Non-oriented electrical steel and preparing method and application thereof
  • Non-oriented electrical steel and preparing method and application thereof

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Embodiment

[0068] The embodiment provides a non-oriented electrical steel and a preparation method thereof, the method comprising:

[0069] S1, casting molten steel that has undergone converter smelting and vacuum treatment successively to obtain a steel slab.

[0070] S2. The slab is heated, rough rolled, finish rolled and coiled in sequence to obtain a hot rolled coil.

[0071] S3, performing normalization treatment, pickling and primary cold rolling on the hot-rolled coils in sequence to obtain primary cold-rolled coils.

[0072] S4, performing continuous annealing on the primary cold-rolled coil to obtain non-oriented electrical steel.

[0073] In this embodiment, the composition is firstly optimized, and the composition control is shown in Table 1.

[0074] Table 1

[0075] serial number C / ％ Si / % S / ％ N / ％ V / ％ Ti / % Al / ％ Mn / % Ni / % Cr / ％ Sn / % Ga / % Hf / % P / ％ 1 0.0009 2.9 0.0009 0.0012 0.0038 0.0015 0.8 0.51 0.8 0.7 0.08 0.3 0.2 0.0013 ...

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Abstract

The invention discloses non-oriented electrical steel and a preparing method and application thereof. The non-oriented electrical steel comprises chemical components including, by mass percent, not larger than 0.004% of C, 1.8 to 4.00% of Si, 0.30 to 1.20% of Al, 0.40 to 1.0% of Mn, 0.50 to 2.0% of Ni, 0.50 to 2.0% of Cr, 0.010 to 0.10% of Sn, not larger than 0.0020% of S, not larger than 0.002% of N, not larger than 0.005% of V, not larger than 0.005% of Ti, not larger than 0.002% of P, not larger than 0.7% of the sum of mass percents of Ga and Hf, and the balance Fe and inevitable impurities. Component design is adopted, a preparing process is matched, the obtained non-oriented electrical steel is excellent in comprehensive properties of iron loss, magnetic induction and mechanical properties, in the production process, no strip breaking exists, and reliability and high efficiency of a motor core can be improved.

Description

technical field [0001] The invention belongs to the technical field of non-oriented electrical steel, and in particular relates to a non-oriented electrical steel and its preparation method and application. Background technique [0002] Non-oriented electrical steel is a ferrosilicon alloy with very low carbon content. It is an indispensable and important soft magnetic functional material in the electric power, electronics and military industries. In the steel plate after deformation and annealing, its grains are distributed in random orientation. Non-oriented electrical steel is the iron core material of the motor and generator stator and rotor working in the rotating magnetic field, so it is required to have good magnetic properties and process properties. [0003] With the increasingly stringent requirements for motor application efficiency, especially for new energy vehicle drive motors, which are extremely demanding compared to industrial motors, the motors are required...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D8/12C21D6/00C21D9/52C22C38/04C22C38/06C22C38/34C22C38/46C22C38/50H02K1/02
CPCC21D1/26C21D8/1216C21D6/005C21D6/008C21D6/004C21D9/52C22C38/004C22C38/34C22C38/06C22C38/04C22C38/008C22C38/002C22C38/001C22C38/46C22C38/50H02K1/02C22C38/40C21D9/46C21D8/125C21D8/1222C21D8/1233C21D8/1261C21D8/1272C21D8/1244C21D1/28
Inventor 刘恭涛安冬洋胡志远朱玉秀李泽林程林龚坚孙茂林
Owner SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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