A preparation method of carbonyl iron powder antirust powder for producing integrally formed inductors

A technology of carbonyl iron powder and inductors, which is applied in the field of preparation of carbonyl iron powder anti-rust powder for the production of integrally formed inductors, which can solve the problems of easy rusting of integrally formed inductors, reduce production efficiency, prolong production cycle, etc., and achieve excellent salt resistance Effects of fog performance, improvement of production efficiency, and reduction of production cycle

Active Publication Date: 2021-10-15
深圳市艺感科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the carbonyl iron powder purchased in the existing market is prepared into powder and used for the production of integrated inductors, the integrated inductors are prone to rust, and additional spraying treatment (usually painting) is required on the surface of the product to prevent rust, which increases The production process prolongs the production cycle and reduces production efficiency

Method used

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preparation example Construction

[0019] The invention provides a preparation method for producing carbonyl iron powder antirust powder for integrally formed inductors, comprising the following steps: performing phosphating treatment on carbonyl iron powder in advance, and phosphating treatment is a passivation treatment that can increase carbonyl iron powder Insulation performance and anti-oxidation performance; Dilute the insulation treatment agent with acetone in advance, and dilute it into an insulation treatment agent solution. The insulation treatment agent can form a strong insulation layer on the surface of carbonyl iron powder particles, which greatly improves the insulation strength of the particle surface; Dissolve the epoxy resin and the silicone resin together with acetone to form a glue solution; dilute the film-forming agent with acetone in advance to form a film-forming agent solution. The film-forming agent can greatly increase the strength of the film on the surface of carbonyl iron powder Gre...

Embodiment 1

[0030] Dilute 1g of phosphoric acid in 50g of acetone, mix well and add to 1000g of carbonyl iron powder, stir well, dry in the air, bake at 60°C for 1 hour, and the phosphating is complete. Dissolve 10g of epoxy resin and 10g of silicone resin in 50g of acetone successively, dissolve evenly, add to the phosphating powder, and stir evenly for 20 minutes to form a slurry; then take 2g of insulating treatment agent and dissolve in 10g of acetone, fully After dissolving, continue to add to the above slurry, and stir evenly for 5 minutes; then take 2g of film-forming agent and dissolve it in 10g of acetone, after fully dissolving, continue to add to the above slurry, and stir evenly for 5 minutes. Then granulate, dry in the air, bake at 100°C for 2 hours, add 1g of zinc stearate after natural cooling, stir evenly and sieve, take 40-300 mesh as good product granules. Then the good product particles are pressed into 24*14*7 magnetic rings, molded under 25Mpa pressure, cured at 160°C...

Embodiment 2

[0035] Take 5g of phosphoric acid and dilute it in 75g of acetone, mix it evenly, add it to 1000g of carbonyl iron powder, stir it evenly, dry it in the air, bake it at 70°C for 1.5 hours, and the phosphating is completed. Take 20g of epoxy resin and 20g of silicone resin and dissolve them in 75g of acetone successively, dissolve them uniformly, add them to the powder after phosphating, and stir evenly for 30 minutes to form a slurry; then take 2.5g of insulating treatment agent and dissolve them in 20g of acetone, After fully dissolving, continue to add to the above slurry, and stir evenly for 10 minutes; then take 2.5g of film-forming agent and dissolve it in 20g of acetone, continue to add to the above slurry after fully dissolving, and stir evenly for 10 minutes. Then granulate, dry in the air, bake at 90°C for 2 hours, add 2.5g of zinc stearate after natural cooling, stir evenly and sieve, take 40-300 mesh as good product granules. Then the good product particles are pres...

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PUM

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Abstract

The invention discloses a preparation method for producing an antirust powder of carbonyl iron powder for integrally formed inductors, comprising the following steps: performing phosphating treatment on the carbonyl iron powder; dissolving epoxy resin and organosilicon resin together with acetone into a glue solution; Dilute the insulating treatment agent with acetone; dilute the film-forming agent with acetone; first add the glue solution to the carbonyl iron powder that has been phosphating and stir, stir to form a slurry, add the insulating treatment agent solution and continue stirring, stir evenly and then add Continue to stir the film solution, granulate after stirring evenly, dry after granulation, then add zinc stearate and stir evenly, and obtain carbonyl iron powder anti-rust powder after sieving; the present invention adds insulating treatment agent And film-forming agent, so that the surface of carbonyl iron powder particles forms a layer of high-insulation and considerable strength adhesive film, which can effectively resist environmental erosion, and the product directly achieves anti-rust effect, which can shorten the production cycle, improve production efficiency and reduce production costs. .

Description

technical field [0001] The invention belongs to the technical field of passive electronic components manufacturing, and in particular relates to a preparation method of carbonyl iron powder antirust powder for producing integrally formed inductors. Background technique [0002] At present, when the one-piece inductor is produced, the electrically connected coil and electrode terminal are first put into the production mold, and then the powder prepared by carbonyl iron powder is filled and compacted by cold pressing with the upper and lower punches to form a As a whole, it is cured at high temperature and has the advantages of strong anti-electromagnetic interference, small size, high current, and low power consumption. [0003] When the carbonyl iron powder purchased in the existing market is prepared into powder and used for the production of integrated inductors, the integrated inductors are prone to rust, and additional spraying treatment (usually painting) is required on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02H01F41/00
CPCH01F41/00H01F41/0246
Inventor 田林武卫锋
Owner 深圳市艺感科技有限公司
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