Metal powder injection molding inductor and processing method thereof

A technology of metal powder and injection molding, which is applied in the manufacture of inductors/transformers/magnets, transformer/inductor coils/windings/connections, inductors with magnetic cores, etc., which can solve the problems of poor electrical performance consistency and production costs of power inductors Advanced problems, to achieve the effect of light weight, no harmful substances, and clean production environment

Inactive Publication Date: 2009-10-07
深圳感通科技有限公司
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Problems solved by technology

[0005] Aiming at the above-mentioned defects of the prior art, the present invention solves the probl

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  • Metal powder injection molding inductor and processing method thereof
  • Metal powder injection molding inductor and processing method thereof
  • Metal powder injection molding inductor and processing method thereof

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Embodiment Construction

[0021] 70% of the main performance of the inductor depends on the material selection of the inner space of the coil, and the outer material of the coil is mainly used to form a closed magnetic circuit, realize electromagnetic shielding, reduce eddy current, and realize physical insulation and heat dissipation , resistance to welding heat, and the realization of mechanical coating protection. The magnetoelectric properties of the metal powder core made of metal powder mainly depend on the magnetic permeability of the metal powder; and the saturation magnetic induction value of the widely used metal powder material is about 1.4T, and the magnetic permeability ranges from 22-100 , such a low magnetic permeability limits its application range. If you want to choose a material with a magnetic permeability above 100, you can only choose fragile ferrite at present. The present invention skillfully utilizes the complementarity of the characteristics of ferrite and iron powder core, a...

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Abstract

The invention relates to a metal powder injection molding inductor and a processing method thereof, which aim at solving the problems of poor electrical performance consistence and high production cost and the like of the traditional power inductors; the method comprises the following steps of: firstly installing a magnetism-conducting core in a hollow cavity of a coil body of an enameled wire, later installing the coil with the magnetism-conducting core in an injection mold; then taking the composite material which mainly comprises ferromagnetic metal powder as flowing feeding and injecting the composite material into the injection mold until the cavity of the injection mold is completely filled; and finally obtaining a patch type inductor or a plug-in inductor which is molded by the injection of metal powder after curing and demolding. The inductor product has consistent appearance size and electrical performance, can select magnetism-conducting cores of various shapes and material qualities to meet different inductance performance demands, and can also greatly improves the production efficiency; in addition, the placement direction of the internal coil of the product can be designed freely and the whole product is consistent with the development direction of elements towards shortness and thinness.

Description

technical field [0001] The invention relates to an inductor element and a processing method thereof, more specifically, to a metal powder injection molding inductor and a processing method thereof. Background technique [0002] A traditional power inductor mainly includes three parts: a magnetic core, a coil, and an electrode; the magnetic core is usually made of manganese-zinc or nickel-zinc ferrite. The power inductor of another structure follows the powder metallurgy process, specifically, the vertical hollow enameled wire coil is embedded in the insulating iron powder, and then it is made by die-casting and thermal curing. [0003] In the inductor with the former structure, its magnetic core usually needs to be produced by a professional factory, and the manufacturing process of the entire inductor product basically relies on jigs and manual operations, resulting in fragile products, large leakage inductance, and low volume-to-energy efficiency ratio. , The consistency ...

Claims

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Application Information

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IPC IPC(8): H01F17/04H01F27/28H01F41/00
Inventor 王向群
Owner 深圳感通科技有限公司
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