Method for manufacturing sendust material and mu173 sendust magnetic powder core

A manufacturing method, sendust technology, applied in the direction of inorganic material magnetism, inductance/transformer/magnet manufacturing, electrical components, etc., can solve the problems of high energy consumption and complicated process

Inactive Publication Date: 2014-02-19
SICHUAN DONGGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the existing manufacturing method has t

Method used

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Comparison scheme
Effect test

Embodiment 1

[0016] Implementation 1. A manufacturing method of sendust material and μ173 sendust magnetic powder core. The specific method is as follows: the composition of the sendust material and μ173 sendust magnetic powder core is ternary system sendust and certain trace elements are added, silicon is 10%, aluminum is 7%, and the balance is iron, including alloy Melting, powder making, powder reduction, powder passivation, annealing, insulation coating, molding, heat treatment, surface coating;

[0017] a. Alloy smelting: alloy smelting is carried out in a magnesia crucible open-type intermediate frequency induction furnace, the melting temperature is above 1400°C, and the alloy melting time is above 50 minutes;

[0018] b. Milling: After the alloy is smelted, it is directly sprayed with nitrogen to make milling powder, and the powder is annealed after passing through a 200-mesh sieve;

[0019] c. Powder reduction: Nitrogen reduction is used, and the nitrogen dew point is controlle...

Embodiment 2

[0026] Implementation 2. A manufacturing method of sendust material and μ173 sendust magnetic powder core. The specific method is: the composition of the sendust material and μ173 sendust magnetic powder core is ternary system sendust and certain trace elements are added, silicon 8%, aluminum 5%, and the balance is iron, including alloy Melting, powder making, powder reduction, powder passivation, annealing, insulation coating, molding, heat treatment, surface coating;

[0027] a. Alloy smelting: alloy smelting is carried out in a magnesia crucible open-type intermediate frequency induction furnace, the melting temperature is above 1400°C, and the alloy melting time is above 50 minutes;

[0028] b. Milling: After the alloy is smelted, it is directly sprayed with nitrogen to make milling powder, and the powder is annealed after passing through a 200-mesh sieve;

[0029] c. Powder reduction: Nitrogen reduction is used, and the nitrogen dew point is controlled below -60°C;

...

Embodiment 3

[0036] Implementation 3. A manufacturing method of sendust material and μ173 sendust magnetic powder core. The specific method is: the composition of the sendust material and μ173 sendust magnetic powder core is ternary system sendust and certain trace elements are added, silicon 9%, aluminum 6%, and the balance is iron, including alloy Melting, powder making, powder reduction, powder passivation, annealing, insulation coating, molding, heat treatment, surface coating;

[0037] a. Alloy smelting: alloy smelting is carried out in a magnesia crucible open-type intermediate frequency induction furnace, the melting temperature is above 1400°C, and the alloy melting time is above 50 minutes;

[0038] b. Milling: After the alloy is smelted, it is directly sprayed with nitrogen to make milling powder, and the powder is annealed after passing through a 200-mesh sieve;

[0039] c. Powder reduction: Nitrogen reduction is used, and the nitrogen dew point is controlled below -60°C;

...

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Abstract

The invention discloses a method for manufacturing a sendust material and a mu173 sendust magnetic powder core. The specific method includes the steps of a, conducting alloy smelting, wherein the smelting temperature is more than 1400 DEG C, and the time for alloy smelting is more than 50 minutes; b, preparing powder, namely, directly conducting nitrogen spraying to manufacture powder after the alloy smelting is conducted; c, conducting powder reduction, namely, conducting reduction through nitrogen; d, conducting power material inactivation, namely, adding an analysis pure grade phosphoric acid solution to the sendust powder, and conducting uniform mixing, wherein the analysis pure grade phosphoric acid solution accounts for, by weight, 3% to 5% of the sendust powder; e, conducting annealing, namely, placing powder into a nitrogen protection furnace at the temperature of 360+/-30 DEG C; f, conducting insulation coating, namely, adding silicon resin adhesives and powder lubricants, wherein the silicon resin adhesives account for, by weight, 1.5% to 3.5% of the powder, and the powder lubricants account for, by weight, 0.5% to 1% of the powder; g, conducting die pressing forming; h, conducting thermal treatment, namely, placing a formed product into the nitrogen protection furnace at the temperature of 700+/-30 DEG C, and conducting annealing for about one hour; i, conducting surface coating, namely, evenly spray painting a layer of epoxy resin paint on the outer surface of the product.

Description

technical field [0001] The invention relates to a manufacturing method of an alloy material, in particular to a manufacturing method of a sendust material and a μ173 sendust magnetic powder core. Background technique [0002] As we all know, the magnetic powder core made of sendust material has the characteristics of good superposition performance, low loss and low temperature rise, and is suitable for higher frequency applications. However, since different users have different requirements on the magnetic permeability of the magnetic powder core made of sendust material, it is necessary to provide ferrosilicon magnetic powder cores with different magnetic permeability according to the user's requirements. At the same time, the existing manufacturing method has the problems of complicated process and high energy consumption. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an inductor with...

Claims

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Application Information

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IPC IPC(8): H01F1/22H01F41/02B22F3/16B22F1/02B22F9/04
Inventor 周勇明应冬苟
Owner SICHUAN DONGGE TECH
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