A method for producing thin-gauge, medium-high grade non-oriented silicon steel by CSP flow anomalous process

A thin-gauge technology for oriented silicon steel, applied in the field of high-grade non-oriented silicon steel, can solve problems such as corrugation, achieve the effects of improving the structure of hot-rolled sheets, saving costs, and weakening the deterioration of magnetic properties

Active Publication Date: 2022-06-07
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of problems such as corrugation that is easy to occur when the existing CSP process is used to produce medium and high-grade non-oriented silicon steel, and to provide a method for producing thin-gauge medium-high-grade non-oriented silicon steel through the non-normalization process of the CSP process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] A method for producing thin-gauge, medium- and high-grade non-oriented silicon steel by CSP process non-normalization process in this embodiment includes smelting, CSP continuous casting, tunnel furnace soaking, hot continuous rolling, cold rolling and annealing, wherein molten steel after smelting treatment The chemical composition and process parameters such as smelting and rolling are shown in Tables 1 to 4 below. The iron loss value P of the non-oriented silicon steel produced in this example 1.50 / 50 (W / kg) is 3.0, magnetic induction value B 50 (T) was 1.69.

[0076] Table 1 Example 1 Chemical composition control (Wt%) of molten steel obtained by smelting

[0077] Si Al Mn Nb+V+Ti C+S+O+N+Zr Rest of Fe 1.70 0.35 0.80 0.0015 0.0046

[0078] Table 2 embodiment 1 smelting process

[0079] Slag alkalinity Deoxidizer Argon blowing pressure Process carbon increase slab thickness 4.0 0.75kg / ton 0.5Mpa 3ppm 7...

Embodiment 2

[0085] A method for producing thin-gauge, medium- and high-grade non-oriented silicon steel by CSP process non-normalization process in this embodiment includes smelting, CSP continuous casting, tunnel furnace soaking, hot continuous rolling, cold rolling and annealing, wherein molten steel after smelting treatment The chemical composition and process parameters such as smelting, rolling and annealing are shown in Tables 5 to 8 below. The iron loss value P of the non-oriented silicon steel produced in this example 1.50 / 50 (W / kg) is 2.2, magnetic induction value B 50 (T) was 1.67.

[0086] The chemical composition control (Wt%) of the molten steel obtained by table 5 embodiment 2 smelting

[0087] Si Al Mn Nb+V+Ti C+S+O+N+Zr Rest of Fe 2.0 0.4 0.85 0.0015 0.0055

[0088] Table 6 embodiment 2 smelting process

[0089] Slag alkalinity Deoxidizer Argon blowing pressure Process carbon increase slab thickness 4.2 0.85kg / ton...

Embodiment 3

[0095]A method for producing thin-gauge, medium- and high-grade non-oriented silicon steel by CSP process non-normalization process in this embodiment includes smelting, CSP continuous casting, tunnel furnace soaking, hot continuous rolling, cold rolling and annealing, wherein molten steel after smelting treatment The chemical composition and process parameters such as smelting, rolling, and annealing are shown in Tables 9 to 12 below, respectively. The iron loss value P of the non-oriented silicon steel produced in this example 1.50 / 50 (W / kg) is 2.7, magnetic induction value B 50 (T) was 1.72.

[0096] Table 9 The chemical composition control (Wt%) of the molten steel obtained by smelting in Example 3

[0097] Si Al Mn Nb+V+Ti C+S+O+N+Zr Rest of Fe 1.5 0.2 1.0 0.002 0.0045

[0098] Table 10 embodiment 3 smelting process

[0099] Slag alkalinity Deoxidizer Argon blowing pressure Process carbon increase slab thickness 4....

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Abstract

The invention discloses a method for producing thin-gauge medium-high-grade non-oriented silicon steel by a CSP flow anomalous process, and belongs to the technical field of silicon steel production. The invention includes the following steps: composition design, smelting, CSP continuous casting, tunnel furnace soaking, hot continuous rolling, cold rolling and annealing. Through composition and process design, the present invention can effectively overcome the disadvantages of corrugated defects in high-grade grades in the existing CSP production, and omit the normalization process of the conventional process, so that the produced thin-gauge non-oriented electrical steel has high magnetic induction and low iron loss excellent magnetic properties.

Description

technical field [0001] The invention belongs to the technical field of silicon steel production, and more particularly relates to a method for producing thin-gauge, medium- and high-grade non-oriented silicon steel by a CSP process irregularity process. Background technique [0002] Non-oriented silicon steel is the most widely used soft magnetic material in motors, and it is one of the key materials that constitute the core components of motors. Its magnetic properties directly affect the efficiency of motors. The use of high-efficiency non-oriented silicon steel is one of the main ways to reduce volume, weight, iron loss and improve efficiency of electromechanical products. With the country and society increasingly demanding and paying more attention to environmental protection, energy saving and consumption reduction, electromechanical products are constantly developing towards miniaturization and high efficiency. The development of high-efficiency non-oriented silicon st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/06C22C38/04C22C38/12C22C38/14C21C7/10C21C7/00C21D1/26C21D8/02
CPCC22C38/02C22C38/06C22C38/04C22C38/12C22C38/14C22C38/001C22C38/002C21C7/10C21C7/0006C21D1/26C21D8/0226C21D8/0236Y02P10/20
Inventor 樊立峰朱雅娴亢泽岳尔斌何建中陆斌苏娟蔡会生郭锋
Owner INNER MONGOLIA UNIV OF TECH
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