A kind of production method of electrical steel plate

A production method and technology for electrical steel plates, applied in the field of production of electrical steel plates, can solve the problems of obtaining high magnetic permeability and low iron loss, and improve the physical quality of low iron loss, high magnetic permeability and iron loss. Effect

Active Publication Date: 2016-08-31
MAGANG (GROUP) HOLDING CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no similar effect for the permeability
Therefore, non-oriented electrical steel sheets with high magnetic permeability and low iron loss cannot be obtained.

Method used

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Embodiment Construction

[0028] The present invention is described in detail below, which is a preferred embodiment among various implementations of the present invention.

[0029] A thin slab production of low iron loss, high magnetic induction non-oriented electrical steel and its manufacturing method, 1. The production process of low-carbon and low-silicon cold-rolled non-oriented electrical steel is: molten steel smelting→RH refining→thin slab continuous casting Continuous rolling→normalized pickling→single-stand cold rolling→continuous annealing→coating→finishing. 2. In the above 1, the molten steel is continuously cast into a thin slab with a thickness of 60-90 mm after smelting and refining, and the thin slab is directly heated in a heating furnace without cooling. The temperature of the heating furnace is 1050-1160 °C, and the heating time is 0.5- 3.5h; then hot-rolled to make a hot-rolled plate with a thickness of 2.0-2.5mm; after the hot-rolled plate is subjected to normalization heat treatm...

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Abstract

The invention relates to a production method of electrical steel plates, comprising the following steps: (1) molten steel smelting in a converter; (2) RH refining; (3) continuous casting and rolling of thin slabs; (4) normalized pickling; (5) stand-alone (6) continuous annealing. Further, the following steps are also included: (7) coating; (8) finishing. The cold-rolled non-oriented steel strip produced by the method has excellent magnetic properties and low production cost, and can meet the needs of downstream motor users. And for the first time in China, a thin slab continuous casting and rolling production process for producing non-oriented electrical steel sheets without phase change chemical composition is fully utilized to produce non-oriented electrical steel sheets with lower iron loss and high magnetic permeability by thin slab continuous casting and rolling The advantages of steel provide technical support for the production of high-grade strip products in the thin slab continuous casting and rolling line, and further expand the manufacturing range of thin slab continuous casting and rolling process products.

Description

technical field [0001] The invention relates to a production method of an electrical steel plate, in particular to a production method of an electrical steel plate with low iron loss and high magnetic permeability, which is used for producing high-efficiency motor iron core materials by continuous casting and rolling of thin slabs. Background technique [0002] Non-oriented electrical steel sheets are used as motor core materials for rotating machinery and medium and small transformers. With the mandatory implementation of high-efficiency energy-saving and global environmental protection movements at home and abroad in recent years, the tendency of high-performance or high-efficiency has become very obvious. For this reason, the demand for non-oriented electrical steel sheets with low iron loss and high magnetic permeability is becoming stronger and stronger. [0003] Usually, as a means of reducing the iron loss of non-oriented electrical steel sheets, it is generally achi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/12
Inventor 王立涛施立发裴英豪裴陈新董梅何峰丰慧
Owner MAGANG (GROUP) HOLDING CO LTD
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