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

Manufacturing process of ultra-thin oriented silicon steel strip

A technology of oriented silicon steel and manufacturing process, applied in the field of silicon steel thin strip preparation, can solve the problems of large cold rolling deformation, poor texture orientation, difficult yield rate, etc., to facilitate cold rolling deformation, reduce equipment load, reduce The effect of production costs

Active Publication Date: 2017-03-01
SUZHOU JUCI FUNCTIONAL MATERIAL CO LTD
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention provides a manufacturing process for ultra-thin oriented silicon steel strips, which uses ordinary oriented silicon steel as the steel strip raw material, and prepares 0.02 mm thick ultra-thin oriented silicon steel thin strips through a secondary cold rolling process to solve the above-mentioned deformation caused by cold rolling. The problem of low yield due to difficulty in rolling due to too large size, and the problem of poor magnetic properties due to poor orientation of favorable texture after rolling

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
  • Manufacturing process of ultra-thin oriented silicon steel strip
  • Manufacturing process of ultra-thin oriented silicon steel strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A manufacturing process of an ultra-thin oriented silicon steel strip described in this embodiment comprises the following steps:

[0034] (1) The first cold rolling: use 0.3mm thick ordinary oriented silicon steel as the raw material of the steel strip, and the cutting width is 200mm. At room temperature, the first cold rolling is carried out, and the rolling deformation rate is 88%. 3 to 7 passes, and the cooling liquid known in the art is used in the cold rolling process;

[0035] (2) Intermediate annealing: Continuous intermediate annealing is carried out under a hydrogen protective atmosphere, the annealing temperature is 750°C, and the annealing speed is 2 m / min to form a recrystallized structure;

[0036] (3) The second cold rolling: at room temperature, under 40% deformation rate, carry out the second cold rolling, the cold rolling pass is 3 to 7 passes, and the final rolling thickness is 0.02mm;

[0037] (4) Recrystallization annealing: Under the hydrogen-nitr...

Embodiment 2

[0041] A manufacturing process of an ultra-thin oriented silicon steel strip described in this embodiment comprises the following steps:

[0042] (1) The first cold rolling: use 0.2mm thick ordinary oriented silicon steel as the raw material of the steel strip, and the cutting width is 200mm. At room temperature, the first cold rolling is carried out, and the rolling deformation rate is 50%. 3 to 7 passes, and the cooling liquid known in the art is used in the cold rolling process;

[0043] (2) Intermediate annealing: Continuous intermediate annealing is carried out under a hydrogen protective atmosphere, the annealing temperature is 1150°C, and the annealing speed is 20 m / min to form a recrystallized structure;

[0044] (3) The second cold rolling: at room temperature, under 80% deformation rate, carry out the second cold rolling, the cold rolling pass is 3~7 passes, and the final rolling thickness is 0.02mm;

[0045] (4) Recrystallization annealing: Under hydrogen-nitrogen ...

Embodiment 3

[0049] A manufacturing process of an ultra-thin oriented silicon steel strip described in this embodiment comprises the following steps:

[0050] (1) The first cold rolling: using 0.25mm thick ordinary oriented silicon steel as the steel strip raw material, the cutting width is 200mm, at room temperature, the first cold rolling is carried out, the rolling deformation rate is 80%, the cold rolling pass 3 to 7 passes, and the cooling liquid known in the art is used in the cold rolling process;

[0051] (2) Intermediate annealing: Under the hydrogen-nitrogen protective atmosphere, continuous intermediate annealing is carried out, the annealing temperature is 950°C, and the annealing speed is 11 m / min to form a recrystallized structure;

[0052] (3) The second cold rolling: at room temperature, under 60% deformation rate, carry out the second cold rolling, the cold rolling pass is 3-7 passes, and the final rolling thickness is 0.02mm;

[0053] (4) Recrystallization annealing: Und...

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 a manufacturing processing of an ultra-thin oriented silicon steel strip. The manufacturing process comprises the following steps: (1) first cold rolling: at room temperature, cold rolling a steel strip raw material for the first time; (2) intermediate annealing: in a reducing atmosphere, carrying out intermediate annealing at 750-1150 DEG C; (3) second cold rolling: at room temperature, cold rolling for the second time; wherein the final rolling thickness if 0.02mm; (4) recrystallization annealing: in a reducing atmosphere, carrying out recrystallization annealing at the temperature of 750-1150 DEG C; and (5) coating: continuously applying insulating coatings to obtain the ultra-thin oriented silicon steel strip. The manufacturing processing of the ultra-thin oriented silicon steel strip has the advantages of low production difficulty, low equipment load and high production efficiency and can be put into batch production easily; and meanwhile, the ultra-thin oriented silicon steel strip has excellent magnetic property and can be put into practical application favorably.

Description

technical field [0001] The invention relates to the preparation of silicon steel thin strips, in particular to a manufacturing process of ultra-thin oriented silicon steel thin strips. Background technique [0002] Oriented silicon steel has a Goss orientation texture in which the grains tend to be aligned in the direction of easy magnetization, and a soft magnetic material with coarse secondary recrystallized grains. Oriented silicon steel has the characteristics of high magnetic induction and low iron loss. Its manufacturing process is complicated. It is a high-end product in the steel industry. It is mainly used to make various transformer cores and stator cores of large generators. One of the most important functional materials for development. [0003] The thickness of ordinary grain-oriented silicon steel is generally greater than 0.2mm, and it is mainly used to make transformer cores that work at 50Hz power frequency. The thickness of oriented silicon steel strip is...

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 Patents(China)
IPC IPC(8): C21D8/12
Inventor 桂福生
Owner SUZHOU JUCI FUNCTIONAL MATERIAL CO LTD
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