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Vacuum sticking method for Stirling cryocooler piston and wear-resistant materials

A technology of wear-resistant materials and bonding methods, applied in the direction of material gluing, connecting components, mechanical equipment, etc., can solve the problems of air bubbles and shedding, and achieve the effect of increasing long-term stability

Active Publication Date: 2015-08-19
CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a vacuum bonding method for the piston of a Stirling refrigerator and a wear-resistant material, to solve the problems of air bubbles and shedding in the existing bonding method, and to improve the firmness and strength of the piston bonded to the wear-resistant material. The service life of the Tring refrigerator

Method used

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Embodiment Construction

[0017] The present invention is further illustrated below by specific examples.

[0018] A vacuum bonding method for a piston of a Stirling refrigerator and a wear-resistant material, comprising:

[0019] S1. First process the outer circle of the piston bonding end and the inner hole of the wear-resistant material bonding end so that the roughness Ra is 3.2 to 6.3;

[0020] S2, then carry out plasma cleaning treatment to piston and wear-resistant material;

[0021] S3. Prepare and mix the high-strength adhesive at the same time;

[0022] S4, then place the piston, wear-resistant material and prepared adhesive in a vacuum oven at 60°C to 80°C for 25min to 30min, wherein the vacuum degree and negative pressure of the vacuum oven are controlled at 0.1MPa;

[0023] S5, then transfer the piston, wear-resistant material and adhesive to the vacuum glove box, wherein the piston is fixed on the reducer placed in advance in the vacuum glove box, and the wear-resistant material and adh...

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Abstract

The invention provides a vacuum sticking method for a Stirling cryocooler piston and wear-resistant materials. The vacuum sticking method comprises the steps that the piston, the wear-resistant materials and an adhesive are placed into a vacuum glove box, wherein the wear-resistant materials and the adhesive are placed at a heating area inside the vacuum glove box; the wear-resistant materials and the adhesive are heated for a period of time at the certain temperature; the adhesive evenly coats the outer circumferential face of the sticking end of the piston and the surface of an inner hole of the sticking end of the wear-resistant materials; the sticking end of the piston is rotationally screwed into the inner hole of the sticking end of the wear-resistant materials, so that the piston and the wear-resistant materials are stuck; the obtained stuck sample piece is placed at the heating area inside the vacuum glove box for solidification. According to the vacuum sticking method, the Stirling cryocooler piston and the wear-resistant materials are well stuck firmly, the long-term sticking stability of the piston and the wear-resistant materials is improved, and the service life of the Stirling cryocooler is prolonged.

Description

technical field [0001] The invention relates to a vacuum bonding method for a piston of a Stirling refrigerator and a wear-resistant material. Background technique [0002] At present, the commonly used bonding of the piston of the Stirling refrigerator and the wear-resistant material is not carried out in a vacuum state, but is carried out under the conditions of normal temperature and pressure. In the existing bonding method under normal temperature and pressure conditions, the bonding part is easy to remain and mix with air, and the air will generate air bubbles when the bonded sample is exposed to high temperature. If the air bubbles rush out from the bonding part, it will cause sticking. The joints are uneven, and as time goes on, the wear-resistant material will fall off from the bonding parts, which will eventually affect the performance and service life of the Stirling refrigerator. Contents of the invention [0003] The purpose of the present invention is to ...

Claims

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Application Information

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IPC IPC(8): F16B11/00
CPCF16B11/006
Inventor 辛存良何世安
Owner CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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