A kind of iron-nickel soft magnetic alloy and iron-nickel soft magnetic alloy parts with short-range ordered structure

An iron-nickel soft magnetic alloy, short-range ordered technology, applied in the field of soft magnetic alloy parts, iron-nickel soft magnetic alloy, can solve the problem of high saturation magnetic induction intensity, to improve the saturation magnetic induction intensity, high performance and cost, eliminate stress Effect

Active Publication Date: 2018-06-12
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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  • A kind of iron-nickel soft magnetic alloy and iron-nickel soft magnetic alloy parts with short-range ordered structure
  • A kind of iron-nickel soft magnetic alloy and iron-nickel soft magnetic alloy parts with short-range ordered structure
  • A kind of iron-nickel soft magnetic alloy and iron-nickel soft magnetic alloy parts with short-range ordered structure

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

An iron-nickel soft magnetic alloy and iron-nickel soft magnetic alloy parts with a short-range ordered structure, the iron-nickel soft magnetic alloy is Fe-50% Ni coarse powder with an average particle diameter of 20-50 microns and an average particle diameter of 1-5 micron Fe-50% Ni fine powder is prepared by mixing the mass ratio of 7:3; the addition of finer powder is conducive to the formation of short-range ordered L10 phase in the alloy, thereby improving the saturation magnetic induction of the material, Its saturation magnetic induction reaches a maximum of 1.55‑1.57T, and its magnetic performance is significantly improved. The method is simple to operate, does not need to change the composition of the alloy, and has low cost and simple process. However, in the present invention, by performing heat treatment and heat preservation on the soft magnetic alloy material after molding, and then performing rapid cooling, the grain size can be controlled and the stress can be eliminated at the same time, and the magnetic properties of the soft magnetic alloy can be improved simply and conveniently without adding expensive rare earth elements to obtain Iron-nickel soft magnetic alloy parts with nano-scale L10 phase particles with excellent magnetic properties.

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 Patents(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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