Fe-Ni magnetically soft alloy with short-range order structure and Fe-Ni magnetically soft alloy part

A technology of iron-nickel soft magnetic alloy and short-range order, which is applied in the field of soft magnetic alloy parts and iron-nickel soft magnetic alloy, can solve the problems of high saturation magnetic induction intensity, etc., and achieve the goal of increasing saturation magnetic induction intensity, simple process, and improving magnetic properties Effect

Active Publication Date: 2017-05-31
HUNAN HENGJI POWDER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For now, the MIM method is rarely used for the production of Fe-50%Ni ferromagnetic powder cores, and the existing Fe-50%Ni soft magnetic alloy materials generally do not contain L1 0 Ordered phase, the maximum saturation magnetic induction intensity is not more than 1.5T

Method used

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  • Fe-Ni magnetically soft alloy with short-range order structure and Fe-Ni magnetically soft alloy part
  • Fe-Ni magnetically soft alloy with short-range order structure and Fe-Ni magnetically soft alloy part
  • Fe-Ni magnetically soft alloy with short-range order structure and Fe-Ni magnetically soft alloy part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The Fe-50%Ni alloy powder with an average particle size of 35 microns is used, and the Fe-50%Ni alloy powder with an average particle size of 1 micron is added and mixed, and the mixing mass ratio is 7:3. Through dry mixing, feeding mixing, granulation, injection molding to produce such as figure 2 circle shown. Specific process: the two powders are mixed evenly by mechanical mixing, the mixing equipment is a four-tank dry mixer, and the dry mixing time is 2 hours. Add an appropriate amount of oil-based binder according to 55% of the powder loading, and make it evenly mixed by dry mixing for 1 hour. After the mixed powder with the binder added is dry-mixed evenly, it is put into the mixing equipment for mixing, so that the metal powder and the binder are mixed evenly, and the feed material with good fluidity is obtained. The sample is injected with an injection molding machine. By adjusting the injection temperature, mold temperature, injection pressure, and injectio...

Embodiment 2

[0021] Use Fe-50%Ni alloy powder with an average particle size of 20 microns, add Fe-50%Ni alloy powder materials with an average particle size of 3 microns, mix, and the mixing mass ratio is 7:3.

[0022] The two powders were mixed evenly by means of mechanical mixing, the mixing equipment was a four-tank dry mixer, and the dry mixing time was 2 hours. Add an appropriate amount of oil-based binder according to 55% of the powder loading, and make it evenly mixed by dry mixing for 1 hour. After the mixed powder with the binder added is dry-mixed evenly, it is put into the mixing equipment for mixing, so that the metal powder and the binder are mixed evenly, and the feed material with good fluidity is obtained. The sample is injected with an injection molding machine. By adjusting the injection temperature, mold temperature, injection pressure, and injection speed, a defect-free magnetic performance test ring injection blank is obtained. After the injection body is obtained, th...

Embodiment 3

[0027] Use Fe-50%Ni alloy powder material with an average particle size of 50 microns, add Fe-50%Ni alloy powder material with an average particle size of 5 microns, mix, and the mixing mass ratio is 7:3.

[0028] The two powders were mixed evenly by means of mechanical mixing, the mixing equipment was a four-tank dry mixer, and the dry mixing time was 2 hours. Add an appropriate amount of oil-based binder according to 55% of the powder loading, and make it evenly mixed by dry mixing for 1 hour. After the mixed powder with the binder added is dry-mixed evenly, it is put into the mixing equipment for mixing, so that the metal powder and the binder are mixed evenly, and the feed material with good fluidity is obtained. The sample is injected with an injection molding machine. By adjusting the injection temperature, mold temperature, injection pressure, and injection speed, a defect-free magnetic performance test ring injection blank is obtained. After the injection body is obta...

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Abstract

The invention discloses a Fe-Ni magnetically soft alloy with a short-range order structure and a Fe-Ni magnetically soft alloy part. The Fe-Ni magnetically soft alloy is prepared by mixing Fe-50%Ni coarse powder with the average particle size ranging from 20 microns to 50 microns and Fe-50%Ni fine powder with the average particle size ranging from 1 micron to 5 microns according to the mass ratio of 7:3; and due to the adding of the fine powder, an L10 phase of the short-range order can be better formed in the alloy, and therefore the saturation magnetic induction density of the material is improved, the saturation magnetic induction density of the material can reach 1.55 T to 1.57 T to the maximum degree, and the magnetic performance is obviously improved. A method is easy to operate, components of the alloy do not need to be changed, the cost is low, and the technology is simple. Heat treatment heat preservation is conducted on the magnetically soft alloy material after forming, and then fast cooling is conducted, so that the grain size can be controlled, stress can be eliminated at the same time, the magnetic performance of the magnetically soft alloy is easily and conveniently improved, expensive rare earth elements do not need to be added, and the Fe-Ni magnetically soft alloy part provided with nanoscale L10 phase particles and having good magnetic performance is obtained.

Description

technical field [0001] The invention belongs to the field of magnetic materials, and relates to an iron-nickel soft magnetic alloy, in particular to an L1 with short-range order 0 phase iron-nickel soft magnetic alloy, and soft magnetic alloy parts prepared from the iron-nickel soft magnetic alloy. Background technique [0002] Soft magnetic material is one of the most widely used magnetic materials at present. Secondly, the hysteresis loop is very narrow, and a high magnetic induction intensity can be obtained under a weak external magnetic field. After the external magnetic field is cancelled, the remaining magnetism is very small. Basically does not reflect magnetism. It is generally desired that the magnetic permeability and magnetic induction of soft magnetic materials be high and the coercive force be low, so as to improve the function and efficiency. Soft magnetic nickel alloy (nickel content 35-90%) is currently the most widely used soft magnetic alloy. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/08C22C19/03B22F1/00B22F3/22H01F1/147
CPCH01F1/14741C22C19/03C22C38/08B22F3/225B22F1/052
Inventor 何浩娄嘉陈永志吴楚
Owner HUNAN HENGJI POWDER TECH
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