Radiation magnetic field sintered rare-earth permanent magnetic tile and its magnetic processing method

A technology of rare earth permanent magnet and magnetization method, which is applied in the field of permanent magnet tiles and its magnetic treatment, can solve the problems of permanent magnet material magnetic energy not being utilized, and achieve the effect of high yield and high density

Inactive Publication Date: 2005-03-02
HEYE SPECIAL STEEL +1
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, its disadvantage is that although the shape is tile-shaped, the magnetic domain arrangement is still parallel, and the magnetic field direction is still parallel after magnetization.
The ra

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
  • Radiation magnetic field sintered rare-earth permanent magnetic tile and its magnetic processing method
  • Radiation magnetic field sintered rare-earth permanent magnetic tile and its magnetic processing method
  • Radiation magnetic field sintered rare-earth permanent magnetic tile and its magnetic processing method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Please refer to Figure 4 The magnetic field distribution of sintered rare earth permanent magnet tiles with radiant magnetic field Figure 5 The outline drawing of the radiant magnetic field sintered rare earth permanent magnet tile. The sectional shape of the radiant magnetic field sintered rare earth permanent magnet tile is fan-shaped, and the inner and outer arcs are concentric circles. The direction of the magnetic field is radial, H represents the direction of the magnetic field, and N represents the normal direction of the radiator, and the two overlap.

[0034] The radiant magnetic field sintered rare earth permanent magnet tile is formed by sintering and magnetizing anisotropic rare earth permanent magnet powder after being shaped in a magnetic field.

[0035] The method of forming and magnetizing the radiant magnetic field sintered rare earth permanent magnet tile in the magnetic field is as follows:

[0036] 1 The material is anisotropic rare earth permanent magn...

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 present invention relates to one kind of radiative magnetic field sintered RE permanent magnetic tile and its magnetic treating process. The tile has sector cross section and concentric inner and outer arc, and radial magnetic field. The magnetic treating process of formation and magnetization inside magnetic field includes the following steps: adopting anisotropic permanent magnet powder of granularity of 2-6 microns; filling the powder into forming cavity; applying parallel magnetic field of magnetic induction 1.0-2.0 T to form radial magnetic field in the forming mold; applying pressure of 20-100 MPa in the direction perpendicular to the magnetic field and maintaining for 2-60 sec; forming the blank tile; and magnetizing the blank tile in radial magnetic field or parallel magnetic field to produce the RE permanent magnetic tile. The magnetically treated RE permanent magnetic tile has obviously higher magnetic energy utilization rate.

Description

technical field [0001] The invention relates to a permanent magnet tile and a magnetic treatment method thereof, in particular to a radiation magnetic field sintered rare earth permanent magnet tile and a magnetic treatment method thereof. Background technique [0002] At present, rare earth permanent magnet materials such as sintered NdFeB have high magnetic properties, and their permanent magnet materials are used in many fields. The tile-shaped permanent magnet material is mainly used in permanent magnet rotors or stators with rotating bodies such as motors and generators. The existing manufacturing method of sintered NdFeB rare earth permanent magnet tile is to first make a cuboid permanent magnet with parallel magnetic field by powder metallurgy, and then process it into a "magnetic tile" with a fan-shaped cross section by wire cutting and other methods, and then Magnetized under parallel magnetic field. Therefore, its disadvantage is that although the shape is tile-s...

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): C04B35/50C04B35/64
Inventor 于旭光张荣斌田藏韬杨文义
Owner HEYE SPECIAL STEEL
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