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Method for producing high-alloy non-oriented silicon steel, high-alloy non-oriented silicon steel and application

A technology of oriented silicon steel and alloy, which is applied in the field of high-alloy non-oriented silicon steel, can solve the problems of poor surface quality of continuous casting slabs, fewer continuous casting furnaces, and large fluctuations in chemical composition content, so as to reduce the fluctuation range and realize the addition amount , the effect of improving accuracy

Pending Publication Date: 2022-07-01
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the chemical composition content fluctuates greatly in the production process of the existing high-alloy non-oriented silicon steel
[0005] Another technical problem to be solved by the present invention is to overcome the defects of poor surface quality of continuous casting slabs existing in the production process of existing high-alloy non-oriented silicon steel
[0006] Another technical problem to be solved by the present invention is to overcome the defect that there are few continuous casting furnaces in the production process of the existing high-alloy non-oriented silicon steel

Method used

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  • Method for producing high-alloy non-oriented silicon steel, high-alloy non-oriented silicon steel and application

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Embodiment 1

[0040] The present embodiment provides a method for producing high-alloy non-oriented silicon steel, comprising the following steps:

[0041](1) KR desulfurization: After the molten iron reaches the KR desulfurization station, the first slag removal is performed, and then the conventional KR desulfurization treatment is performed, so that the sulfur content in the molten iron after KR desulfurization is 0.0009-0.0014wt%, and the desulfurization is completed. 3-5min, carry out slag scraping for the second time, so that the scraping rate of iron-clad slag is 94%, and the molten iron after KR desulfurization is obtained;

[0042] (2) converter tapping: conventional converter steelmaking is carried out to the molten iron after KR desulfurization, converter tapping is performed after the converter steelmaking is finished, and metal tin is added based on the target tin content in the converter tapping process to obtain pre-alloyed molten steel;

[0043] (3) RH refining: RH decarburi...

Embodiment 2

[0056] The present embodiment provides a method for producing high-alloy non-oriented silicon steel, comprising the following steps:

[0057] (1) KR desulfurization: After the molten iron reaches the KR desulfurization station, the first slag removal is performed, and then conventional KR desulfurization treatment is performed, so that the sulfur content in the molten iron after KR desulfurization is 0.0007-0.0013wt%, and the desulfurization is completed. 3-5min, carry out slag scraping for the second time, so that the scraping rate of iron-clad slag is 97%, and the molten iron after KR desulfurization is obtained;

[0058] (2) converter tapping: conventional converter steelmaking is carried out to the molten iron after KR desulfurization, converter tapping is performed after the converter steelmaking is finished, and metal tin is added based on the target tin content in the converter tapping process to obtain pre-alloyed molten steel;

[0059] (3) RH refining: RH decarburizat...

Embodiment 3

[0072] The present embodiment provides a method for producing high-alloy non-oriented silicon steel, comprising the following steps:

[0073] (1) KR desulfurization: After the molten iron reaches the KR desulfurization station, the first slag removal is performed, and then conventional KR desulfurization treatment is performed, so that the sulfur content in the molten iron after KR desulfurization is 0.0007-0.0013wt%, and the desulfurization is completed. 3-5min, carry out slag scraping for the second time, so that the scraping rate of iron-clad slag is 97%, and the molten iron after KR desulfurization is obtained;

[0074] (2) converter tapping: conventional converter steelmaking is carried out to the molten iron after KR desulfurization, converter tapping is performed after the converter steelmaking is finished, and metal tin is added based on the target tin content in the converter tapping process to obtain pre-alloyed molten steel;

[0075] (3) RH refining: RH decarburizat...

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Abstract

The invention relates to the technical field of metallurgy, in particular to a method for producing high-alloy non-oriented silicon steel, the high-alloy non-oriented silicon steel and application of the high-alloy non-oriented silicon steel. According to the method, by optimizing the adding amount, the adding sequence and the adding time of the alloy, the fluctuation interval of the content of each alloy component is effectively reduced, and the precision of the content of each alloy component is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for producing high-alloy non-oriented silicon steel, high-alloy non-oriented silicon steel and use thereof. Background technique [0002] Non-oriented silicon steel is an important functional material and is known as a high-quality steel product. Its quality level and performance level are a comprehensive reflection of the overall production level of modern steel plants. With the rise of emerging industries such as electric bicycles, large generators, new energy vehicles and intelligent manufacturing, high-alloy non-oriented silicon steel has an increasingly high status in the modern industrial system. [0003] In recent years, major iron and steel companies are developing high-alloy non-oriented silicon steel for the manufacture of drive motors, large generators and other equipment. However, at present, the production process of high-alloy non-oriented silicon steel...

Claims

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Application Information

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IPC IPC(8): C21C5/28C21C7/064C21C7/10B22D11/00C22C38/02C22C38/04C22C38/06
CPCC21C5/28C21C7/10C21C7/064B22D11/001C22C38/02C22C38/04C22C38/06C22C38/008Y02P10/20
Inventor 周彦召赵家七马建超李宁麻晗
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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