Efficient cold-rolled non-oriented electrical steel produced through CSP process and production method

A technology of grain-oriented electrical steel and production method, applied in the field of non-oriented electrical steel production, can solve the problems of inferior magnetic properties, high cost, etc., and achieve the effects of excellent magnetic properties, inhibition of normal growth, and reduction of iron loss

Active Publication Date: 2022-01-11
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a CSP process to produce high-efficiency cold-rolled non-oriented electrical steel and its production method. Compact and heat-saving, to solve the problems of inferior magnetic performance of CSP technology products and high cost of conventional hot charging and hot rolling technology

Method used

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  • Efficient cold-rolled non-oriented electrical steel produced through CSP process and production method
  • Efficient cold-rolled non-oriented electrical steel produced through CSP process and production method
  • Efficient cold-rolled non-oriented electrical steel produced through CSP process and production method

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Comparison scheme
Effect test

Embodiment 1

[0047] A high-efficiency cold-rolled non-oriented electrical steel produced by a CSP process includes the following mass percentage components: as shown in Table 2, the balance not shown in Table 2 is Fe and unavoidable impurities.

[0048] The CSP flow process described in embodiment 1 produces the production method of high-efficiency cold-rolled non-oriented electrical steel, comprising the following technological process:

[0049] The molten iron is pretreated firstly, then smelted in a converter, subjected to ladle argon blowing and RH vacuum treatment, then enters thin slab continuous casting, and finally passes through a tunnel furnace for soaking, and then enters a 7-stand continuous rolling mill for rolling; the thin slab is then hot-rolled Made into 2.3mm-thick hot-rolled sheet; the hot-rolled sheet is pickled, cold-rolled, annealed and coated to make a 0.5mm-thick low-grade electrical steel strip.

[0050] The specific process parameters are:

[0051] For hot metal ...

Embodiment 2

[0062] A high-efficiency cold-rolled non-oriented electrical steel produced by a CSP process includes the following mass percentage components: as shown in Table 2, the balance not shown in Table 2 is Fe and unavoidable impurities.

[0063] The CSP flow process described in embodiment 2 produces the production method of high-efficiency cold-rolled non-oriented electrical steel, comprising the following technological process:

[0064] The molten iron is pretreated firstly, then smelted in a converter, subjected to ladle argon blowing and RH vacuum treatment, then enters thin slab continuous casting, and finally passes through a tunnel furnace for soaking, and then enters a 7-stand continuous rolling mill for rolling; the thin slab is then hot-rolled Made into 2.3mm-thick hot-rolled sheet; the hot-rolled sheet is pickled, cold-rolled, annealed and coated to make a 0.5mm-thick low-grade electrical steel strip.

[0065] The specific process parameters are:

[0066] For hot metal ...

Embodiment 3

[0076] A high-efficiency cold-rolled non-oriented electrical steel produced by a CSP process includes the following mass percentage components: as shown in Table 2, the balance not shown in Table 2 is Fe and unavoidable impurities.

[0077] The CSP flow process described in embodiment 3 produces the production method of high-efficiency cold-rolled non-oriented electrical steel, comprising the following technological process:

[0078] The molten iron is pretreated firstly, then smelted in a converter, subjected to ladle argon blowing and RH vacuum treatment, then enters thin slab continuous casting, and finally passes through a tunnel furnace for soaking, and then enters a 7-stand continuous rolling mill for rolling; the thin slab is then hot-rolled It is made into a hot-rolled sheet with a thickness of 2.5mm; the hot-rolled sheet is made into a finished low-grade electrical steel strip with a thickness of 0.5mm after pickling, cold rolling, annealing and coating.

[0079] The ...

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Abstract

The invention provides efficient cold-rolled non-oriented electrical steel produced through a CSP process and a production method. The efficient cold-rolled non-oriented electrical steel comprises the following components: less than or equal to 0.0030% of C, 1.00-1.70% of Si, less than or equal to 0.0050% of Als, 0.10-0.30% of Mn, 0.01-0.3% of Sn, less than or equal to 0.050% of P, less than or equal to 0.0080% of S, less than or equal to 0.0030% of N, less than or equal to 0.0030% of Nb, less than or equal to 0.0030% of V, less than or equal to 0.0030% of Ti and the balance of Fe and inevitable impurities. Compared with the prior art, the method for producing the efficient cold-rolled non-oriented electrical steel through the CSP process has the advantages that by controlling chemical components in the steel and adopting a proper production process, excellent surface quality, low iron loss, high magnetic induction, low manufacturing cost and efficient production are realized.

Description

technical field [0001] The invention belongs to the technical field of non-oriented electrical steel production, and in particular relates to a high-efficiency cold-rolled non-oriented electrical steel produced by a CSP process and a production method. Background technique [0002] Cold-rolled non-oriented electrical silicon steel is an important electromagnetic material for manufacturing various types of motors and generators, especially cold-rolled non-oriented electrical steel products with low iron loss and high magnetic induction. Direction of development. At present, the mainstream production process of low-grade electrical steel is mainly thin slab continuous casting and rolling (CSP) and conventional hot charging and hot rolling. CSP technology has a shorter production process and lower energy consumption, but the magnetic properties of the produced electrical steel products fail to meet the market requirements of low iron loss and high magnetic induction. Conventi...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14B21C37/02C21D8/02C22C33/04
CPCC22C38/02C22C38/04C22C38/06C22C38/008C22C38/001C22C38/12C22C38/14C22C33/04B21C37/02C21D8/0205C21D8/0226C21D8/0247Y02P10/20
Inventor 朱德港武战军吴鹏飞章鸣
Owner MAANSHAN IRON & STEEL CO LTD
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