Cu-containing high-cleanliness non-oriented electrical steel plate and manufacturing method thereof

A oriented electrical steel sheet, high cleanliness technology, applied in the direction of manufacturing tools, circuits, electrical components, etc., can solve problems such as prolonging material manufacturing and delivery cycles, increasing manufacturing costs, production site technology, and troublesome quality management.

Active Publication Date: 2021-03-02
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At this stage, normalizing treatment or intermediate annealing in bell furnace is an effective method to improve the iron loss and magnetic induction of materials. It is widely used in the production of high-efficiency and high-grade non-oriented silicon steel sheets, which can effectively reduce the iron loss of

Method used

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  • Cu-containing high-cleanliness non-oriented electrical steel plate and manufacturing method thereof
  • Cu-containing high-cleanliness non-oriented electrical steel plate and manufacturing method thereof
  • Cu-containing high-cleanliness non-oriented electrical steel plate and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A6-A17 and comparative example A1-A5

[0061] The Cu-containing high-cleanliness non-oriented electrical steel sheets of the above-mentioned examples A6-A17 and the conventional steel sheets of the comparative examples A1-A5 were prepared by the following steps:

[0062] (1) Smelting and casting are carried out according to the chemical composition shown in Table 1. Among them, molten iron and steel scrap can be matched according to the proportion. After smelting in the converter, after decarburization, deoxidation and alloying in RH refining, 120-250mm Thick, 800-1400mm wide continuous casting slab.

[0063] (2) Hot rolling: After the continuous casting slab undergoes rough rolling and finish rolling in sequence, a hot rolled steel coil is obtained, and the thickness of the steel coil is 1.5-2.8 mm.

[0064] (3) Normalization: The hot-rolled steel coil is subjected to normalization treatment. The normalized soaking temperature is 800-1000°C, and the soaking time is 1-180s.

[0065] (4) Cold rolling: use a contin...

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PUM

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Abstract

The invention discloses a Cu-containing high-cleanliness non-oriented electrical steel plate. The Cu-containing high-cleanliness non-oriented electrical steel plate comprises the chemical elements of,by mass, larger than 0 and less than or equal to 0.003% of C, 0.1% to 2.0% of Si, 0.1% to 0.6% of Mn, 0 to 0.004% of S, 0.003% to 0.2% of Cu, 0.1% to 1.0% of Al, and the balance Fe and other inevitable impurities. In addition, the invention further discloses a continuous annealing process of the Cu-containing high-cleanliness non-oriented electrical steel plate. Besides, the invention further discloses a manufacturing method of the Cu-containing high-cleanliness non-oriented electrical steel plate. The manufacturing method comprises the steps of carrying out smelting and casting; carrying outhot rolling; carrying out normalizing; carrying out cold rolling; carrying out the continuous annealing process; and carrying out insulating and coating to obtain the finished non-oriented electricalsteel plate. The Cu-containing high-cleanliness non-oriented electrical steel plate is high in cleanliness and excellent in magnetic performance.

Description

technical field [0001] The invention relates to a steel plate and a manufacturing method thereof, in particular to a non-oriented electrical steel plate and a manufacturing method thereof. Background technique [0002] In recent years, with the increasingly stringent demand for high efficiency, energy saving, and environmental protection in the user market, it is required that the non-oriented silicon steel sheet used for making motors, compressors, and EI iron core raw materials should have excellent quality under the premise of ensuring price competitiveness. Electromagnetic properties, commonly known as low iron loss and high magnetic induction, meet the urgent needs of these electrical products for high efficiency, energy saving, and environmental protection. [0003] In order to obtain good electromagnetic properties, the content of silicon and aluminum in steel is usually greatly increased to effectively increase the resistivity of the material, thereby effectively red...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/16C21D1/26C21D8/12
CPCC22C38/004C22C38/02C22C38/04C22C38/16C22C38/06C21D1/26C21D8/1222C21D8/1233C22C38/002C22C38/001C21D9/46C21D8/1244C21D8/1261C21D8/1272C21D8/1283C21D1/28C21D6/008C21D6/005H01F1/18H01F1/14791Y02P10/20
Inventor 张峰王波沈侃毅刘宝军李国保储双杰
Owner BAOSHAN IRON & STEEL CO LTD
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