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Preparation technology of high-performance amorphous nickel-based anti-theft iron core

An anti-theft iron core and preparation process technology, applied in the direction of inductor/transformer/magnet manufacturing, magnetic materials, magnetic objects, etc., can solve the problems of stress relaxation, magnetic performance attenuation, magnetic performance deterioration, etc. The effect of enhancing corrosion ability and eliminating internal stress

Inactive Publication Date: 2015-05-06
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the amorphous material is essentially a high-energy metastable state, stress relaxation will occur when it is placed for a long time, which will lead to the deterioration of its magnetic properties.
Especially when it is exposed to a salty humid environment, it will undergo extremely fast corrosion, which will lead to the attenuation of its magnetic properties and cause failure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The formula of nickel-based anti-theft iron core is as follows: nickel 6.1Kg (30.5%), molybdenum 0.9Kg (4.5%), manganese 0.01Kg (0.05%), chromium 0.02Kg (0.1%), silicon 0.01Kg (0.05%), boron 0.44Kg (2.2%), iron 12.52Kg (62.6%).

[0020] The preparation process steps of the amorphous nickel-based anti-theft iron core are as follows:

[0021] a. According to the above formula, put the raw materials into the vacuum intermediate frequency furnace, -2 Induction melting under Pa conditions, and then casting into master alloy;

[0022] b. The master alloy is sprayed into an amorphous strip with a thickness of 24 μm by a single-roller spin quenching method;

[0023] c. Wind the sprayed strip to form an annular iron core with an inner diameter, outer diameter, width and height of 11.2mm, 17.5mm, and 5mm respectively;

[0024] d. Perform annealing and stress relief treatment on the iron core in a vacuum annealing furnace, the annealing temperature is 380°C, and the holding ti...

Embodiment 2

[0032] The formula of nickel-based anti-theft iron core is as follows: nickel 6.2Kg (31%), molybdenum 1.1Kg (5.5%), manganese 0.02Kg (0.1%), chromium 0.02Kg (0.1%), silicon 0.02Kg (0.1%), boron 0.87Kg (4.35%), iron 11.77Kg (58.85%).

[0033] The preparation process steps of the nickel-based anti-theft iron core are as follows:

[0034] a. According to the above formula, put the raw materials into the vacuum intermediate frequency furnace, -2 Induction melting under Pa conditions, and then casting into master alloy;

[0035] b. Spray the master alloy into an amorphous strip with a thickness of 28 μm by using a single-roller spin quenching method;

[0036] c. Wind the sprayed strip material into an annular iron core with inner diameter, outer diameter, width and height of 11.2mm, 17.5mm and 5mm respectively

[0037] d. Perform annealing and stress relief treatment on the iron core in a vacuum annealing furnace, the annealing temperature is 400°C, and the holding time is 80 m...

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Abstract

The invention discloses a preparation technology of a high-performance amorphous nickel-based anti-theft iron core. The iron core is made of a nickel-based amorphous alloy. The preparation method comprises the following steps of vacuum smelting of a mother alloy, argon-filling pressure strip spraying and vacuum low temperature annealing. The nickel-based amorphous material comprises the following components (wt.%): 30.5-31% of nickel, 4.5-5.5% of molybdenum, 0.05-0.1% of manganese, 0.1% of chromium, 0.05-0.1% of silicon, 2.2-4.35% of boron and 58.85-62.6% of iron. The prepared amorphous nickel-based iron core is greater than 1.5T in saturation induction density Bs, above 7400 in initial permeability mu i, and less than 0.75 / m in coercive force Hc, is excellent in corrosion resistance and can be extensively used for the field of amorphous anti-theft systems.

Description

technical field [0001] The invention belongs to the technical field of preparation of amorphous nickel-based materials, and specifically prepares an amorphous nickel-based anti-theft iron core with high magnetic permeability and corrosion resistance by means of vacuum smelting and pressure spraying. Background technique [0002] Amorphous alloy refers to that when the material is solidified so fast that the atoms in the material are frozen from the liquid state, so that the atomic arrangement has the characteristics of short-range order and long-range disorder of liquid metal. The structural difference between amorphous alloys and crystalline solids is that there is no long-range order and no translational periodicity. The structural characteristics of the amorphous state also lead to its unique magnetic properties, mechanical properties, electrical properties and corrosion resistance properties, which also determine its broad application prospects. Amorphous soft magnetic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/153H01F41/02C22C45/02
Inventor 吴玉程李鹏苏海林张伟
Owner HEFEI UNIV OF TECH
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