Non-oriented electrical steel plate with excellent magnetic performance and continuous annealing method thereof

A technology of oriented electrical steel sheets and magnetic properties, applied in the field of steel sheets and their manufacturing processes, can solve problems such as narrow application range

Inactive Publication Date: 2020-12-29
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the scope of application of the above-mentioned technical solutions is relatively narrow

Method used

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  • Non-oriented electrical steel plate with excellent magnetic performance and continuous annealing method thereof
  • Non-oriented electrical steel plate with excellent magnetic performance and continuous annealing method thereof
  • Non-oriented electrical steel plate with excellent magnetic performance and continuous annealing method thereof

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Embodiment Construction

[0064] The non-oriented electrical steel sheet with excellent magnetic properties and its continuous annealing process described in the present invention will be further explained and described below in conjunction with the accompanying drawings and specific examples. However, the explanation and description do not constitute inappropriate technical solutions of the present invention. limited.

[0065] The conventional electrical steel sheets of each comparative example and the non-oriented electrical steel sheets of the embodiments were prepared by the following steps:

[0066] (1) Use molten iron and steel scrap to mix according to the chemical composition shown in Table 1. After smelting in the converter, then RH refining for decarburization and deoxidation alloying. 1400mm wide continuous casting slab.

[0067] (2) Hot rolling.

[0068] (3) Normalization.

[0069] (4) Cold rolling.

[0070] (5) Continuous annealing.

[0071] (6) The final product is obtained after the...

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Abstract

The invention discloses a non-oriented electrical steel plate with excellent magnetic performance. The non-oriented electrical steel plate comprises, by mass, greater than 0 and smaller than or equalto 0.004% of C, 0.1-3.5% of Si, 0.15-2.0% of Mn, 0.1-3.5% of Al, 0.001-0.1% in total of one or both of Sb and Sn, 0.0005-0.01% in total of one or more of Ca, Mg and RE, and the balance Fe and other inevitable impurities. In addition, the invention discloses a continuous annealing process and manufacturing method of the non-oriented electrical steel plate with excellent magnetic performance. The manufacturing method comprises the following steps: smelting and casting, hot rolling, normalizing, cold rolling, implementation of the continuous annealing process, and covering with an insulating coating, thereby obtaining the non-oriented electrical steel plate with excellent magnetic performance.

Description

technical field [0001] The invention relates to a steel plate and its manufacturing process, in particular to a non-oriented electrical steel plate and its continuous annealing method. Background technique [0002] In recent years, with the gradual development of various EI cores, motors and compressors in the direction of small size, precision and high efficiency, there has been an increasing demand for energy saving, high efficiency and environmental protection. In order to meet these electrical products As the corresponding raw material, the non-oriented electrical steel sheet must have excellent magnetic properties while ensuring the price advantage, which is commonly referred to as having the performance of ultra-low iron loss and ultra-high magnetic induction. [0003] Since Si and Al elements can significantly increase the resistivity of the material, can effectively reduce the magnetocrystalline anisotropy, make magnetization easier, and thus can greatly reduce the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/60C21D8/12C21D1/26
CPCC21D1/26C21D8/1244C22C38/002C22C38/004C22C38/005C22C38/008C22C38/02C22C38/04C22C38/06C22C38/60
Inventor 李国保王波李俊沈侃毅沈科金张峰
Owner BAOSHAN IRON & STEEL CO LTD
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