Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-grade non-oriented silicon steel and production method thereof

A technology of oriented silicon steel and its production method, which is applied in the production field of high-grade non-oriented silicon steel, and achieves the effects of low production cost, excellent magnetic properties and reduced process flow

Active Publication Date: 2021-04-06
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that normalization treatment is required in the production process of high-grade non-oriented silicon steel in the prior art, the purpose of the present invention is to provide a production method of high-grade non-oriented silicon steel without normalization treatment, and to provide a method using High-grade non-oriented silicon steel prepared by this production method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-grade non-oriented silicon steel and production method thereof
  • High-grade non-oriented silicon steel and production method thereof
  • High-grade non-oriented silicon steel and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] One embodiment of the present invention provides a production method of high-grade non-oriented silicon steel, and high-grade non-oriented silicon steel prepared by the production method. The production method includes the following processes in sequence: molten iron desulfurization, converter smelting, RH refining, continuous casting, hot rolling, acid continuous rolling, annealing, cooling, coating and finishing, and normalization treatment is not required before acid continuous rolling , and the obtained non-oriented silicon steel has good magnetic properties and no corrugated defects on the surface, which meets the requirements of low-cost and high-grade non-oriented silicon steel.

[0046] In this embodiment, the chemical composition design scheme of the non-oriented silicon steel is as follows, and its chemical composition is calculated by mass percentage: C: 0.002-0.004%, S≤0.003%, Si: 1.4-1.7%, Mn: 0.7-0.95 %, P≤0.03%, Sn:0.015~0.035%, Nb≤0.004%, V≤0.004%, Ti≤0....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses high-grade non-oriented silicon steel and a production method thereof. The non-oriented silicon steel comprises the following chemical components including, by mass, 0.002%-0.004% of C, less than or equal to 0.003% of S, 1.4%-1.7% of Si, 0.7%-0.95% of Mn, less than or equal to 0.03% of P and 0.015%-0.035% of Sn, and 11*([Si]-1.4%)=14*([Mn]-0.7%). According to the production method of the non-oriented silicon steel, the heating temperature of a continuous casting billet is 1120 DEG C-1150 DEG C, the finish rolling temperature of finish rolling is 890+ / -15 DEG C, the rolling reduction of finish rolling of the last pass is larger than or equal to 30%, the total rolling reduction of finish rolling of the last two passes is larger than or equal to 50%, and the coiling temperature is 650+ / -20 DEG C; and normalization treatment is not needed before acid continuous rolling, the obtained non-oriented silicon steel is good in magnetic performance, the surface of the non-oriented silicon steel is free of corrugated defects, and the requirements of the low-cost high-grade non-oriented silicon steel are met.

Description

technical field [0001] The invention belongs to the technical field of steel material preparation, relates to a high-grade non-oriented silicon steel, and also relates to a production method of the high-grade non-oriented silicon steel. Background technique [0002] Non-oriented silicon steel is the iron core material of the motor and generator rotor working in the rotating magnetic field, which requires good magnetic properties, including lower iron loss and higher magnetic induction. According to the technical standards and technical agreements of various countries, the iron loss P 1.5 / 50 Non-oriented silicon steel ≤4.00W / kg is called high-grade non-oriented silicon steel, and high-grade non-oriented silicon steel is mainly divided into four categories according to thickness specifications: 0.35mm thickness series, 0.50mm thickness series, special thick specification series and special thin specification series. High-grade non-oriented silicon steel is mainly used in lar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C21D8/12C22C33/04
CPCC22C38/02C22C38/04C22C38/008C21D8/1222C21D8/1272C22C33/04Y02P10/20C21D9/46C21D1/76C21D8/1205C21D8/1277C21D1/60C21D8/1261C21D6/008C22C38/004C22C38/12C22C38/34C21C7/0006C21C7/068C21C7/10C23G1/08C23G3/029C22C38/001H01F1/147B22D11/001C21D6/004C21D6/005C21D8/0205C21D8/0226C21D8/0263C21D8/0278C21D9/52C22C38/002C22C38/06C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C2202/02
Inventor 岳重祥吴圣杰陆佳栋李慧
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com