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Ultralow-coercivity soft-magnetic iron core and preparation method thereof

A soft magnetic core and coercive force technology, applied in the field of ultra-low coercive force soft magnetic core and its preparation, can solve the problems of large coercive force of the soft magnetic core, failing to meet the ideal standard, complicated preparation method, etc. High coercivity, high waste reduction rate, and low consumption of manpower and material resources

Active Publication Date: 2018-08-21
ZHEJIANG HENGJI YONGXIN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the soft magnetic core in the prior art that the coercive force is large, cannot reach the ideal standard, and the preparation method is cumbersome, and there are many influencing factors, and a kind of ultra-low coercive force soft magnet is proposed. Core and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of ultra-low coercive force soft magnetic core proposed by the present invention is prepared from soft magnetic core A material and soft magnetic core B material. The soft magnetic core A material is iron powder with a particle size of 200 meshes. The soft magnetic core The core B material includes the following raw materials in weight percentage: C 0.0025%, Al 4%, Si 0.8%, Ni 3.2%, Co 0.8%, Zn 0.4%, Mo 0.7%, B 0.5%, Mn0.5%, composite rare earth metal 0.3%, the balance is Fe and unavoidable impurities, the composite rare earth metal is a mixture of La and Pr, and the mass ratio of La and Pr is 1:1.5.

[0026] Its preparation method comprises the following steps:

[0027] S1, according to C 0.0025%, Al 4%, Si 0.8%, Ni 3.2%, Co 0.8%, Zn 0.4%, Mo0.7%, B 0.5%, Mn 0.5%, composite rare earth metal 0.3%, the balance is Fe Take by weighing each raw material of soft magnetic core B material, for subsequent use;

[0028] S2. Add the raw materials weighed in step S1 into ...

Embodiment 2

[0033]A kind of ultra-low coercive force soft magnetic core proposed by the present invention is prepared from soft magnetic core A material and soft magnetic core B material. The soft magnetic core A material is iron silicon powder with a particle size of 100 meshes. Magnetic core B material includes the following raw materials in weight percentage: C 0.0025%, Al 3.8%, Si 1.0%, Ni 2.8%, Co 0.7%, Zn 0.35%, Mo 0.7%, B 0.5%, Mn 0.4%, composite rare earth metal 0.3%, the balance is Fe and unavoidable impurities, the composite rare earth metal is a mixture of La and Pr, and the mass ratio of La and Pr is 1:1.6.

[0034] Its preparation method comprises the following steps:

[0035] S1, according to C 0.0025%, Al 3.8%, Si 1.0%, Ni 2.8%, Co 0.7%, Zn 0.35%, Mo0.7%, B 0.5%, Mn 0.4%, composite rare earth metal 0.3%, the balance is Fe Take by weighing each raw material of soft magnetic core B material, for subsequent use;

[0036] S2. Add the raw materials weighed in step S1 into a sm...

Embodiment 3

[0041] A kind of ultra-low coercive force soft magnetic core proposed by the present invention is prepared from soft magnetic core A material and soft magnetic core B material. The soft magnetic core A material is iron-aluminum powder with a particle size of 100 meshes. Magnetic core B material includes the following raw materials in weight percentage: C 0.003%, Al 3%, Si 0.8%, Ni 3%, Co 1.0%, Zn 0.25%, Mo 0.7%, B 0.5%, Mn0.3%, compound rare earth Metal 0.2%, the balance is Fe and unavoidable impurities, the composite rare earth metal is a mixture of La and Pr, and the mass ratio of La and Pr is 1:1.4.

[0042] Its preparation method comprises the following steps:

[0043] S1. According to C 0.003%, Al 3%, Si 0.8%, Ni 3%, Co 1.0%, Zn 0.25%, Mo 0.7%, B0.5%, Mn 0.3%, composite rare earth metal 0.2%, the balance is Fe Take by weighing each raw material of soft magnetic core B material, for subsequent use;

[0044] S2. Add the raw materials weighed in step S1 into a smelting fur...

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Abstract

The invention belongs to the technical field of soft-magnetic iron cores and particularly provides an ultralow-coercivity soft-magnetic iron core and a preparation method thereof. The problems are solved in the prior art that a soft-magnetic iron core is high in coercivity and cannot reach ideal standard, a preparation method is complicated and lots of influence factors exist. The ultralow-coercivity soft-magnetic iron core is prepared by a soft-magnetic iron core material A and a soft-magnetic iron core material B, wherein the soft-magnetic iron core material B contains the following raw materials: Al, Si, Ni, Co, Zn, Mo, B, Mn, compound rare earth metal, Fe and inevitable impurities. The preparation method comprises the following steps that S1, the rate materials of the soft-magnetic iron core material B are prepared; S2, the soft-magnetic iron core material B is prepared; S3, the soft-magnetic iron core material A and the soft-magnetic iron core material B are ball-milled and refined; S4, smelting, ingot casting and annealing are performed to obtain the ultralow-coercivity soft-magnetic iron core. The ultralow-coercivity soft-magnetic iron core is reasonable in composition, ultralow in coercivity, excellent in magnetic performance and low in cost, and the preparation method is simple.

Description

technical field [0001] The invention relates to the technical field of soft magnetic cores, in particular to an ultra-low coercivity soft magnetic core and a preparation method thereof. Background technique [0002] The hysteresis loop of soft magnetic materials is narrow and long, the initial magnetic permeability is high, the coercive force is small, and it is easy to obtain and lose magnetism. It is a class of extremely important magnetic materials and is widely used in electrical equipment and electronics. in the device. The soft magnetic core is the most widely used soft magnetic material. For example, the soft magnetic core can be applied to the automobile engine system. It is the core component of the ignition coil of the automobile engine system, and the magnetic inductance of the iron core will directly affect the The ignition energy to the coil, and the service life of the iron core. However, the current production of soft magnetic cores is mainly made by cutting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/147H01F41/02
CPCH01F1/147H01F1/14733H01F1/14791H01F41/0206
Inventor 吴奇明李康基
Owner ZHEJIANG HENGJI YONGXIN NEW MATERIALS CO LTD