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Non-oriented electrical steel plate with high magnetic induction and low iron loss and manufacturing method thereof

A technology of grain-oriented electrical steel sheet and a manufacturing method, applied in the field of steel sheet and its manufacturing, can solve the problems of reducing the magnetic induction of the finished steel sheet, increasing the manufacturing cost of the finished steel sheet, and prolonging the production time and delivery cycle of the finished steel sheet.

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

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Problems solved by technology

[0003] In order to obtain good electromagnetic properties, the more common technical means is to greatly increase the content of silicon and aluminum to effectively increase the resistivity of the material, thereby effectively reducing the iron loss of the finished steel plate, but the magnetic induction of the finished steel plate will also be reduced.
At the same time, with the increase of silicon and aluminum content, the manufacturability of the post-process of steel will gradually deteriorate
This will not only greatly increase the manufacturing cost of finished steel plates, prolong the production time and delivery cycle of finished steel plates, but also bring great difficulties to production management and quality management

Method used

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  • Non-oriented electrical steel plate with high magnetic induction and low iron loss and manufacturing method thereof
  • Non-oriented electrical steel plate with high magnetic induction and low iron loss and manufacturing method thereof
  • Non-oriented electrical steel plate with high magnetic induction and low iron loss and manufacturing method thereof

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Embodiment Construction

[0065] The non-oriented electrical steel sheet with high magnetic induction and low iron loss 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 embodiments of the specification. The scheme constitutes an improper limitation.

[0066] 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:

[0067] (1) Use molten iron and steel scrap to mix according to the chemical composition shown in Table 1. After smelting in a converter, then RH refining for decarburization and deoxidation alloying.

[0068] (2) After the molten steel is continuously cast, a continuous casting slab with a thickness of 120-250mm and a width of 800-1400mm is obtained.

[0069] (2) Hot rolling.

[0070] (3) Normalization: normalization temperature T 常化 =T 居里温度 +(120~1...

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Abstract

The invention discloses a non-oriented electrical steel plate with high magnetic induction and low iron loss. The non-oriented electrical steel plate comprises, by mass, 0.001-0.004% of C, 1.6-3.5% ofSi, 0.1-1.0% of Mn, 0.15-2.0% of Al, 0-0.002% of Ti, 0.003-0.2% in total of one or both of Sb and Sn, 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 high magnetic induction and low iron loss. 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 a manufacturing method thereof, in particular to a high-toughness steel plate and a manufacturing method thereof. Background technique [0002] Energy saving and consumption reduction is the eternal goal pursued by the electric power industry. With the increasing demand for high efficiency and miniaturization in the user market, it is required that the corresponding non-oriented electrical steel sheet should not only meet the requirements of high electromagnetic performance, but also have sufficient price competitive advantages, so as to realize its own as much as possible. Reduce costs and consumption, and effectively improve the market competitiveness of its own products. [0003] In order to obtain good electromagnetic properties, the more common technical means is to greatly increase the content of silicon and aluminum to effectively increase the resistivity of the material, thereby effectively reducing t...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/14C21D8/12
CPCC21D8/1272C22C38/004C22C38/008C22C38/02C22C38/04C22C38/06C22C38/14C22C38/60
Inventor 沈侃毅王波张峰沈科金储双杰刘宝军
Owner BAOSHAN IRON & STEEL CO LTD
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