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

Preparation method of iron-nickel-molybdenum metal magnetic powder core with magnetic permeability mu = 400

A technology of iron-nickel-molybdenum and magnetic permeability, which is applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problems of brittle magnetic core performance, low molding pressure, high pressure, etc., and achieve low molding pressure , reduce the molding pressure, increase the effect of temperature

Active Publication Date: 2018-01-12
HENGDIAN GRP DMEGC MAGNETICS CO LTD
View PDF8 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of high pressure, fragile magnetic core and low magnetic permeability in the traditional preparation method of iron-nickel-molybdenum magnetic powder core, the present invention provides a kind of coating effect, low molding pressure, which is beneficial to improve the magnetic core magnetic performance. Preparation method of iron-nickel-molybdenum metal magnetic powder core with permeability μ=400

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
  • Preparation method of iron-nickel-molybdenum metal magnetic powder core with magnetic permeability mu = 400

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of an iron-nickel-molybdenum metal magnetic powder core with a magnetic permeability μ=400, comprising the following steps:

[0037] (1) weighing: according to 80% nickel ingot, 2.8% ferromolybdenum (molybdenum content 55%, surplus is iron), surplus is the mass percentage content proportioning of iron and takes each component, for subsequent use;

[0038] (2) Gas atomization pulverization: each component is melted in an intermediate frequency induction furnace, and atomized pulverization is carried out by nitrogen at a pressure of 1.2 MPa through the tundish of the atomization equipment;

[0039] (3) Particle size combination: After sieving the magnetic powder obtained in step (2) according to the particle size, the particle size combination is carried out according to different particle size ratios. Based on the total mass of the magnetic powder matrix, the magnetic powder particle size combination is: -140~+200 mesh magnetic powder 5%, -200~+300 m...

Embodiment 2

[0047] A preparation method of an iron-nickel-molybdenum metal magnetic powder core with a magnetic permeability μ=400, comprising the following steps:

[0048] (1) weighing: according to 82% nickel ingot, 3.2% ferromolybdenum (molybdenum content 65%, surplus is iron), surplus is the mass percentage content ratio of iron and takes each component, for subsequent use;

[0049] (2) Gas atomization pulverization: each component is melted in an intermediate frequency induction furnace, and atomized pulverization is carried out by nitrogen at a pressure of 3.2 MPa through the tundish of the atomization equipment;

[0050] (3) Particle size combination: After sieving the magnetic powder obtained in step (2) according to the particle size, the particle size combination is carried out according to different particle size ratios. Based on the total mass of the magnetic powder matrix, the magnetic powder particle size combination is: -140~+200 mesh magnetic powder 15%, -200~+300 mesh mag...

Embodiment 3

[0059] A preparation method of an iron-nickel-molybdenum metal magnetic powder core with a magnetic permeability of 400, comprising the following steps:

[0060] (1) Weighing: according to 81% nickel ingot, 3.0% ferromolybdenum (molybdenum content 60%, surplus is iron), surplus is the mass percentage content proportioning of iron and takes each component, for subsequent use;

[0061] (2) Gas atomization pulverization: each component is melted in an intermediate frequency induction furnace, and atomized pulverization is carried out by nitrogen at a pressure of 2.4 MPa through the tundish of the atomization equipment;

[0062] (3) Particle size combination: After sieving the magnetic powder obtained in step (2) according to the particle size, the particle size combination is carried out according to different particle size ratios. Based on the total mass of the magnetic powder matrix, the magnetic powder particle size combination is: -140~+200 mesh magnetic powder 10%, -200~+300...

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 technical field of metal soft magnetic material manufacture, in particular to a preparation method of an iron-nickel-molybdenum metal magnetic powder core with the magnetic permeability mu = 400. The preparation method comprises the steps of 1, weighing material; 2, gas atomization pulverizing; 3, granularity combination; 4, heat treatment; 5, activation treatment; 6,once insulating coating; 7, twice insulating coating; 8, compression molding; 9, core annealing; 10, immersion spraying. According to the preparation method of the iron-nickel-molybdenum metal magnetic powder core, before the insulating coating, the surface of the magnetic powder is activated by using an activator, the coating effect is increased, the formed coating layer is more uniform, and theprepared core is not easy to break; organic reagent is not used, and the preparation process is greener and more environmentally friendly; a high temperature release agent is adopted, the heat treatment temperature is high, the forming pressure is low, the magnetic permeability of the magnetic core is improved; the whole method is simple in process, easy to implement and strong in operability.

Description

technical field [0001] The invention relates to the technical field of metal soft magnetic material manufacturing, in particular to a method for preparing an iron-nickel-molybdenum metal magnetic powder core with a magnetic permeability μ=400, which has good cladding effect, low molding pressure, and is conducive to improving the magnetic permeability of the magnetic core. Background technique [0002] Metal magnetic powder core is an important kind of soft magnetic material. Because of its unique properties, it plays an important role in the electronics industry, and its application range and usage are increasing rapidly. Iron-nickel-molybdenum metal magnetic powder core has its unique properties: the lowest loss, the highest magnetic permeability and the best temperature coefficient, and is widely used in precision instruments and military equipment. With the rapid development of today's electronic technology, terminal products are constantly developing in the direction of...

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): H01F1/147H01F1/26B22F1/02C21D1/26C22C38/12C22C38/16C22C38/02C22C38/32
Inventor 吕世雅
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