A kind of low-noise characteristic grain-oriented silicon steel and its manufacturing method

A technology of oriented silicon steel and its manufacturing method, which is applied in the field of electrical steel and its manufacturing, can solve the problems of not reducing the magnetostriction of the steel plate, achieve the effects of reducing the magnetostrictive performance, controlling the grain size, and reducing the grain size of the finished product

Active Publication Date: 2018-03-30
BAOSHAN IRON & STEEL CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical solution disclosed in this US patent achieves the purpose of reducing iron loss through mirror surface and large coating tension, but this technical solution does not reduce the magnetostriction of the steel plate

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
  • A kind of low-noise characteristic grain-oriented silicon steel and its manufacturing method
  • A kind of low-noise characteristic grain-oriented silicon steel and its manufacturing method
  • A kind of low-noise characteristic grain-oriented silicon steel and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1-A6 and comparative example B1-B2

[0050] Obtain embodiment and comparative example by the manufacturing method of low-noise characteristic grain-oriented silicon steel of the present invention, it comprises steps:

[0051] 1) smelting and casting into slabs, during the smelting process, controlling the proportioning of each chemical element in the silicon steel substrates of the examples and comparative examples;

[0052] 2) Heating: heating to 1200-1280°C, holding the temperature for 1-4 hours, and hot-rolling into strip steel;

[0053] 3) Normalization: firstly heat to 1100-1200°C, then cool down to 900-1000°C at a cooling rate of 1°C / s-10°C / s; then cool at a cooling rate of 10°C / s-70°C / s to room temperature;

[0054] 4) Cold rolling: adopt primary cold rolling or secondary cold rolling with an intermediate annealing step, and the finished product thickness H after cold rolling is 0.27-0.35mm;

[0055] 5) Decarburization annealing: perform a recrystallization annealing at a temperature of 800-900°C, and th...

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
Login to view more

Abstract

The invention discloses a low-noise characteristic oriented silicon steel, which comprises a silicon steel substrate and an insulating coating coated on the silicon steel substrate; in addition, the tension range of the insulating coating is 6-8MPa; the Cu element in the silicon steel substrate and S element content satisfy: 0.1%≤Cu≤0.5%, 0.01%≤S≤0.05%, and atomic ratio Cu / S satisfy: 5≤Cu / S≤10. The invention also discloses a method for manufacturing oriented silicon steel with low noise characteristics, which comprises the steps in sequence: (1) smelting and casting into a slab; (2) heating; (3) normalizing; (4) cold rolling; (5) ) decarburization annealing; (6) finished product annealing; (7) thermal drawing annealing, and coating an insulating coating on the surface of the silicon steel substrate, adjusting the coating amount so that the tension range of the insulating coating is 6-8MPa. The low-noise characteristic oriented silicon steel of the present invention has small magnetostriction, and the iron core made of it produces little vibration, thereby reducing the overall noise level of the transformer.

Description

technical field [0001] The invention relates to a steel material and a manufacturing method thereof, in particular to an electrical steel and a manufacturing method thereof. Background technique [0002] During excitation, the process of dimensional change of oriented silicon steel finished plate with magnetization is called magnetostriction, which is one of the main sources of transformer noise. As people's demand for energy increases and they become more sensitive to noise, users have stricter requirements on the performance of transformers, especially the noise performance of transformers. At present, transformer manufacturers, steel manufacturers, universities and research institutions all over the world have invested a lot of energy and financial resources to carry out research on the correlation between the noise performance of transformers and different influencing factors. [0003] The mechanism of magnetostriction is the change and rotation of the number of 90° mag...

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): C22C38/16C21D8/12
Inventor 吴美洪李国保杨勇杰赵自鹏吉亚明孙焕德沈侃毅凌晨黄杰
Owner BAOSHAN IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap