Supercharge Your Innovation With Domain-Expert AI Agents!

Silicon steel sheet vacuum annealing process

An annealing process and silicon steel sheet technology, applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of increased current loss, eddy current noise, etc., to reduce eddy current loss and current loss, reduce iron The effect of improving damage and flatness

Active Publication Date: 2015-09-16
FUJIAN ANSHUN TRANSFORMER
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The cut and formed oriented silicon steel sheet of the power transformer has problems such as burrs and bending. The burrs are easy to form eddy currents and increase the noise, and the bending will increase the current loss.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A silicon steel sheet vacuum annealing process, it comprises the following steps:

[0022] A. The stacked and clamped silicon steel sheets are put into the annealing furnace, and then the annealing furnace is sealed;

[0023] B. After the treatment in step A, the temperature in the furnace is raised to 400°C. During the heating process, the waste gas in the furnace is drawn out and filled with nitrogen in a vacuum state to maintain the nitrogen vacuum protection in the furnace;

[0024] C. After being treated in step B, the temperature in the furnace is raised to 650° C. and kept for 4 hours;

[0025] D. After being processed in step C, raise the temperature in the furnace to 720° C., keep it warm for 3 hours, and then stop heating.

[0026] 30Q120 silicon steel sheet, before the above-mentioned vacuum annealing, when the magnetic flux density B is the standard 17 kilogauss, the unit iron loss is 1.18W / Kg, and the magnetization capacity is 1.82VA / Kg. After the above-m...

Embodiment 2

[0029] A silicon steel sheet vacuum annealing process, it comprises the following steps:

[0030] A. The stacked and clamped silicon steel sheets are put into the annealing furnace, and then the annealing furnace is sealed;

[0031] B. After the treatment in step A, the temperature in the furnace is raised to 450°C, and the exhaust gas in the furnace is drawn out at the same time during the heating process, and nitrogen is filled in a vacuum state to maintain the nitrogen vacuum protection in the furnace;

[0032] C. After being treated in step B, the temperature in the furnace is raised to 700° C. and kept for 3 hours;

[0033] D. After being processed in step C, raise the temperature in the furnace to 720° C., keep it warm for 3.5 hours, and then stop heating.

[0034] After the treatment in step D, the nitrogen vacuum protection is usually not stopped until the temperature of the annealing furnace is naturally lowered to below 200°C, and the furnace can be opened to take o...

Embodiment 3

[0038] A silicon steel sheet vacuum annealing process, it comprises the following steps:

[0039] A. The stacked and clamped silicon steel sheets are put into the annealing furnace, and then the annealing furnace is sealed;

[0040] B. After the treatment in step A, the temperature in the furnace is raised to 500°C. During the heating process, the waste gas in the furnace is drawn out and filled with nitrogen in a vacuum state to maintain the nitrogen vacuum protection in the furnace;

[0041] C. After being treated in step B, the temperature in the furnace is raised to 600°C and kept for 3.7 hours;

[0042] D. After being processed in step C, raise the temperature in the furnace to 720° C., keep it warm for 4 hours, and then stop heating.

[0043] 30Q120 silicon steel sheet, before the above-mentioned vacuum annealing, when the magnetic flux density B is the standard 17 kilogauss, the unit iron loss is 1.18W / Kg, and the magnetization capacity is 1.82VA / Kg. After the above-m...

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

No PUM Login to View More

Abstract

The invention relates to a silicon steel sheet vacuum annealing process, which is characterized by comprising the following steps of: A, putting piled and clamped silicon steel sheets into an annealing furnace, and then sealing the annealing furnace; B, after the treatment of the step A, rising temperature in the furnace to 400-500 DEG C, meanwhile taking out waste gas in the furnace and filling nitrogen under the vacuum condition, and maintaining nitrogen vacuum protection in the furnace; C, after the treatment of the step B, rising temperature in the furnace to 600-700 DEG C, and keeping the temperature for 3-4 hours; D, after the treatment of the step C, rising temperature in the furnace to 720 DEG C, keeping the temperature for 3-4 hours and then stopping heating. The invention aims at providing the silicon steel sheet vacuum annealing process which can eliminate rough selvedge and can improve flatness of the silicon steel sheets.

Description

technical field [0001] The invention relates to a silicon steel sheet vacuum annealing process. Background technique [0002] The cut and formed oriented silicon steel sheets for power transformers have problems such as burrs and bending. The burrs are easy to form eddy currents and increase noise, and bending will lead to increased current loss. Therefore, an effective treatment method is needed to solve the problems of burrs and bending of silicon steel sheets. Contents of the invention [0003] The object of the present invention is to provide a silicon steel sheet vacuum annealing process, which can eliminate burrs and improve the flatness of the silicon steel sheet. [0004] The object of the present invention is achieved through the following technical solutions: a silicon steel sheet vacuum annealing process, characterized in that it comprises the following steps: [0005] A. The stacked and clamped silicon steel sheets are put into the annealing furnace, and then...

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
IPC IPC(8): C21D9/46C21D1/26C21D1/773
Inventor 雷福荣游上云徐斌何俊杰何煜青黄建勇
Owner FUJIAN ANSHUN TRANSFORMER
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com