Processing technology of static iron core of electromagnetic valve

A processing technology and static iron core technology, which is applied in the field of electromagnetic valve static iron core processing technology, can solve the problems of large material loss, low work efficiency, and large damage to the magnetic properties of products, so as to reduce the coercive force, improve the magnetic properties, The effect of grain uniformity

Active Publication Date: 2012-07-18
SHAOXING KANGJIAN PRECISION STAINLESS STEEL
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Problems solved by technology

[0011] The purpose of the present invention is to solve the problems of low technical work efficiency, large material loss, 33.2% cumulative material loss, and large damage to the magnetic properties of the produc

Method used

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  • Processing technology of static iron core of electromagnetic valve
  • Processing technology of static iron core of electromagnetic valve
  • Processing technology of static iron core of electromagnetic valve

Examples

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Embodiment

[0031] Example: A machining process for a solenoid valve static iron core, such as figure 2 As shown, the parts structure of the static iron core is as follows figure 2 Shown. The static iron core 1 has a cylindrical cap shape, one end of which is provided with an end hole 2 and the other end is provided with a ring groove.

[0032] The static iron core in this example is a ferrite material with a diameter of 10mm, and the processing technology is as follows:

[0033] a. The raw material is soaked in the film solution for more than 30 minutes and the film is applied, and the diameter is 9.85±0.02mm in the first cold drawing;

[0034] b. The material is first annealed after cold drawing. Keep the furnace temperature at 810±10°C for 4 hours. After the furnace is cooled to 450°C, open the furnace door to cool to room temperature and leave the furnace, and fill with nitrogen as protective gas during annealing;

[0035] c. The material is soaked in the film solution for more than 30 mi...

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Abstract

The invention relates to a processing technology of a static iron core of an electromagnetic valve, which has the advantages of reducing the material spillage and improving the magnetic performance of the static ion core. The technology comprises the following steps of: performing cold drawing, primary annealing treatment, secondary cold drawing on linear ferrite serving as raw material, and carrying out cold heading on the material to form a part blank; performing secondary annealing treatment on the part blank, detecting the magnetic performance of the part and performing surface finishing treatment if the part is qualified. According to the processing technology, cutting processing is replaced with cold drawing and cold heading, annealing treatment is performed after the part is formed, the magnetic perforamnce of the final part is enhanced, and the material utilization rate in the static iron core processing process is improved.

Description

Technical field [0001] The invention relates to a solenoid valve component, in particular to a solenoid valve static iron core processing technology. technical background [0002] The static iron core of the solenoid valve is also called the head, stop iron, attractor, etc. The solenoid valve controls the attraction or separation between the static iron core and the moving iron core by switching on and off to achieve the purpose of controlling the opening and closing of the valve. , The static iron core has higher requirements on the magnetic properties of the material. [0003] The CN1594638A patent published by the Chinese Patent Office on March 16, 2005, entitled Head Material for Solenoid Valve and its preparation method, the material composition meets (weight percentage): C content is less than 0.08%, Si content is 0.8~2.5% , Cr content is 12-16%, Mn content is 0.2-0.6%, S content is 0.2-0.4%, Ti content is 0.2-0.6%, rare earth Re content is 0-0.1%, and the rest is iron. The...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 石康
Owner SHAOXING KANGJIAN PRECISION STAINLESS STEEL
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