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

A method for improving the strength of mnzn power ferrite core without increasing loss

A ferrite core, ferrite technology, applied in the direction of inorganic material magnetism, inductance/transformer/magnet manufacturing, circuit, etc., can solve the problem that the method is not perfect, and achieve the effect of improving the strength of the magnetic core

Active Publication Date: 2020-01-10
HENGDIAN GRP DMEGC MAGNETICS CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the technical solutions similar to the above-mentioned patents all increase the strength at the expense of loss. This method is not perfect

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 method for improving the strength of mnzn power ferrite core without increasing loss
  • A method for improving the strength of mnzn power ferrite core without increasing loss
  • A method for improving the strength of mnzn power ferrite core without increasing loss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 53.5mol% Fe 2 o 3 and 10.2mol% of ZnO, the rest is the amount of MnO, mixed in the ratio of 1:4:0.45 according to the ratio of ball water, sand milling and crushing in a sand mill for 1 hour, then spray granulation, put into Pre-fired at 950°C in a rotary kiln. 400ppm of CaCO 3 , 100ppm ZrO 2 and 350ppm V 2 o 5 Add it to the calcined material, put the calcined material and additives into a sand mill, grind it for 160 minutes, then spray and granulate it, and press it into ECW32G2 product under a certain pressure. Put the product into a bell furnace for sintering, and the sintering temperature is 1300°C. Keep warm for 5 hours, and the oxygen content is 5%-6%. Then cooled to room temperature under nitrogen protection.

Embodiment 2

[0027] 53.2mol% Fe 2 o 3 and 10.5mol% of ZnO, and the rest is the amount of MnO, mixed according to the ratio of 1:4:0.45 in the ratio of ball water to water, sanded and crushed in a sand mill for 1 hour, then spray granulated, put into Pre-fired at 950°C in a rotary kiln. 300ppm of CaCO 3 , 100ppm ZrO 2 and 350ppm V 2 o 5 Add it to the calcined material, put the calcined material and additives into a sand mill, grind it for 160 minutes, then spray and granulate it, and press it into ECW32G2 product under a certain pressure. Put the product into a bell furnace for sintering, and the sintering temperature is 1300°C. Keep warm for 5 hours, and the oxygen content is 5%-6%. Then cooled to room temperature under nitrogen protection.

Embodiment 3

[0034] 53mol% Fe 2 o 3 and 10.7mol% of ZnO, the rest is the amount of MnO, mixed in the ratio of 1:4:0.45 according to the ratio of ball water, sand milled and crushed in a sand mill for 1 hour, then spray granulated, put into Pre-fired at 950°C in a rotary kiln. 300ppm of CaCO 3 , 100ppm ZrO 2 and 240ppm V 2 o 5 Add it to the calcined material, put the calcined material and additives into a sand mill, grind it for 160 minutes, then spray and granulate it, and press it into ECW32G2 product under a certain pressure. Put the product into a bell furnace for sintering, and the sintering temperature is 1300°C. Keep warm for 5 hours, and the oxygen content is 5%-6%. Then cooled to room temperature under nitrogen protection.

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 the field of magnetic materials and discloses a method of improving the magnetic core strength of a MnZn power ferrite without increasing loss. 200-400ppm of CaCO3, 240-410ppmof V2O5 and 100-200ppm of ZrO2 are added to prepare the MnZn power ferrite. The method disclosed by the invention can effectively improve the magnetic core strength of the ferrite on the premise of not increasing the loss.

Description

technical field [0001] The invention relates to the field of magnetic materials, in particular to a method for improving the strength of an MnZn power ferrite core without increasing loss. Background technique [0002] Although the volume of electronic components becomes smaller, the size of the corresponding magnetic core is also smaller, but the strength requirements for the magnetic core are further increased to ensure that the small magnetic core will not break during use. [0003] Although there are many methods to improve the strength of the magnetic core at present, for example, the Chinese patent application number CN201010268612.0 discloses a preparation method of high bending strength ferrite, and the ferrite is prepared according to the following steps: material selection- Mixing - calcining - granulation - molding - sintering. The raw material includes main material and auxiliary material, main material: 55.5-58.5mol% Fe 2 o 3 , 4.5-9.5 mol% of ZnO, the rest i...

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): H01F41/02H01F1/36C04B35/26C04B35/622
Inventor 吕东华
Owner HENGDIAN GRP DMEGC MAGNETICS 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