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Metal magnetic powder for integrally-formed inductor and preparation method thereof

A technology of metal magnetic powder and alloy powder, which is applied in the field of metal magnetic powder and its preparation of integrally formed inductors, which can solve problems such as cracking of molded products, failure of inductance characteristics, and rust, so as to reduce product energy consumption and improve quality products efficiency and cost reduction

Inactive Publication Date: 2020-07-24
江门市开源电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During production, problems such as poor powder fluidity, unreachable inductance characteristics, cracking of molded products, unreachable inductance and saturation, and rust are prone to occur, resulting in huge waste of materials, manpower, production, and delivery.

Method used

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Embodiment Construction

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] A metal magnetic powder for integrated forming inductors, comprising 97.5% to 99.45% FeSiCr alloy powder, 0.01% to 0.1% film forming agent, 0.015% to 0.5% binder and 0.51% to 2% by mass percentage Lubricants, film-forming agents include phosphoric acid or passivating agents, adhesives include high-temperature-resistant adhesives and curing agents, and the ratio of high-temperature-resistant adhesives and curing agents is 1: (0.5-1.6).

[0024] The iron-silicon-chromium alloy powder includes 2.5%-6.5% chromium, 3%-11% and 83%-...

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Abstract

The invention discloses a metal magnetic powder for an integrally-formed inductor and a preparation method thereof. The metal magnetic powder comprises the following components in percentage by mass:97.5%-99.45% of an iron-silicon-chromium alloy powder, 0.01%-0.1% of a film-forming agent, 0.015%-0.5% of an adhesive and 0.51%-2% of a lubricating agent, wherein the film-forming agent includes a phosphoric acid or a passivant, the adhesive includes a high-temperature-resistant adhesive and a curing agent, and a ratio of the high-temperature-resistant adhesive to the curing agent is 1: (0.5-1.6).A service life of a mold is prolonged, technical problems that characteristics of an electric appliance are unstable due to cracking of an inner portion and an outer portion of a product and so on are solved, energy consumption of the product is greatly reduced, productivity is improved, a yield is effectively increased, and cost is reduced.

Description

technical field [0001] The invention relates to the field of soft magnetic powder, in particular to a metal magnetic powder used for integrally forming inductors and a preparation method thereof. Background technique [0002] Integral molding inductors are divided into DIP and SMD, both of which are formed by die-casting of iron powder, which requires high powder insulation treatment. The most commonly used are reduced iron powder, carbonyl iron powder and alloy iron powder. Among them, reduced iron powder has high inductance, but poor current characteristics and corrosion resistance, requires spraying treatment, and is cheap. Carbonyl iron powder has low inductance and poor corrosion resistance, but has good current characteristics and high price. Compared with the previous two, the alloy iron powder has a middle inductance, good corrosion resistance and current characteristics, but the price is also expensive. As elemental iron with a loose structure, reduced iron powder...

Claims

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Application Information

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IPC IPC(8): H01F1/26H01F41/02
CPCH01F1/26H01F41/0246
Inventor 杨国俊李仲彬黄钿鉁
Owner 江门市开源电子有限公司