Soft magnetic material annealing thermal treatment method

A technology of annealing heat treatment and soft magnetic materials, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problems of unadjustable annealing temperature, affecting soft magnetic properties, power consumption and time consumption, etc., to improve annealing efficiency and reduce correction Tenacity, sensitivity improvement effect

Inactive Publication Date: 2018-12-18
蚌埠市双环电子集团股份有限公司
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Problems solved by technology

[0004] On the one hand, the efficiency of the traditional annealing method is extremely low, and it can only be annealed one by one, which consumes powe

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[0022] Such as figure 1 As shown, the present invention provides a soft magnetic material annealing heat treatment method, including the following steps:

[0023] S1. Derusting soft magnetic materials; when derusting, an ultrasonic cleaning machine is used to immerse the soft magnetic materials in the rust removing liquid for ultrasonic cleaning for 10 minutes. The mass ratio of water to the rust removing agent in the rust removing liquid is 100:5 ;

[0024] S2. Degrease and prevent rust from the soft magnetic material; when degrease and prevent rust, use an ultrasonic cleaning machine to immerse the soft magnetic material in the degreasing and antirust liquid for ultrasonic cleaning for 10 minutes. A mixture of rust inhibitors, the mass ratio of degreasing agent to rust inhibitor is 100:1.5;

[0025] S3. Dry soft magnetic materials; use a drying oven when drying, the drying temperature is 60±10℃, and the drying time is 1h±10min;

[0026] S4. The chain furnace 1 is used to anneal the...

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Abstract

The invention discloses a soft magnetic material annealing thermal treatment method. The soft magnetic material annealing thermal treatment method comprises the following steps of: S1, performing rust-removal treatment on a soft magnetic material; S2, performing de-oiling rust-removal treatment on the soft magnetic material; S3, drying the soft magnetic material; andS4, adopting a chain type furnace to perform annealing treatment on the soft magnetic material, wherein a furnace hearth of the chain type furnace comprises a first heating area, a second heating area, a first heat-preserving area,a second heat-preserving area, a first cooling region, a second cooling area and a cooling warm area from an inlet to an outlet. Continuous annealing thermal treatment is performed on the soft magnetic material under an unsealed environment, so that annealing efficiency can be greatly improved; an annealing curve is formed in each warm area, so that a microstructure of the soft magnetic materialcan be improved, magnetic conductivity of the soft magnetic material is improved, and coercive force of the soft magnetic material is reduced; after being subjected to annealing thermal treatment, thesoft magnetic material has high magnetic conductivity and low coercive force, and can quickly respond to outer magnetic field changes; and under the low coercive force condition, the soft magnetic material improves sensitivity of an electromagnetic product.

Description

technical field [0001] The invention relates to the technical field of metal heat treatment, in particular to a soft magnetic material annealing heat treatment method. Background technique [0002] Soft magnetic materials refer to when the magnetization occurs at Hc not greater than 1000A / m, such materials are called soft magnetic materials. Typical soft magnetic materials can achieve maximum magnetization with minimum external magnetic field. Soft magnetic materials are easy to magnetize and demagnetize, and are widely used in electrical and electronic equipment. The most widely used soft magnetic materials are iron-silicon alloys and various soft ferrites. [0003] Soft magnetic materials must undergo annealing heat treatment after being processed into parts to obtain good soft magnetic properties and eliminate processing stress. At present, the traditional annealing method is generally to place a batch of soft magnetic materials in a sealed atmosphere furnace, and the ...

Claims

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Application Information

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IPC IPC(8): C21D1/26C21D1/74C21D9/00C23G1/00
Inventor 靳融马武坤殷秋生金建领王波徐乾
Owner 蚌埠市双环电子集团股份有限公司
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