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Processing method of magnetized seal

A processing method and technology for sealing parts, applied in the field of sealing parts processing, can solve the problems of easy occurrence of gaps between the sealing parts and the mechanical contact parts, poor tightness of the sealing parts and the mechanical contact, and difficulty in meeting the performance requirements of the sealing parts, etc. High and low temperature, good sealing effect, the effect of improving the service life

Inactive Publication Date: 2017-11-24
宁国市宁和密封件厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the existing problems: natural rubber is environmentally friendly, low in toxicity, less polluting, and has good degradation effect, but it is inferior to artificial synthetic rubber in terms of heat resistance, hardness and anticorrosion performance. It is difficult for natural rubber as the raw material for seals to meet the performance requirements of seals; and seals are mostly used in the grooves of mechanical joints. The tightness is poor, and the gap between the seal and the mechanical contact part is easy to appear, resulting in gas or oil leakage, and the sealing effect is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A processing method for a magnetic seal, comprising the following steps:

[0017] (1) Sol mixing: first heat natural rubber, silicone rubber, and hydrogenated nitrile rubber to 184°C to make liquid and stir and mix for 32 minutes, then add nylon, paraffin and other ingredients, stir for 42 minutes, and follow the cooling rate of 5°C / min The temperature was lowered to 64°C and kept for 1.5h, and the colloid was obtained after cooling;

[0018] (2) Mastication and mixing: process the colloid through plastic and mixing processes to obtain rubber;

[0019] (3) Molding: put the rubber into the seal abrasive for heat treatment, first heat the temperature to 172°C for 1.5h, and use ultrasonic vibration for 22min, then lower the temperature to 85°C at 3°C / min and keep for 42min , the primary seal is made after cooling;

[0020] (4) Vulcanization: Put the primary seal in a vulcanization tank for vulcanization treatment at a temperature of 93°C and a volume concentration of hyd...

Embodiment 2

[0026] A processing method for a magnetic seal, comprising the following steps:

[0027] (1) Sol mixing: first heat natural rubber, silicone rubber, and hydrogenated nitrile rubber to 187°C to make a liquid state, stir and mix for 38 minutes, then add nylon, paraffin and other ingredients, stir for 44 minutes, and follow the cooling rate of 5°C / min The temperature was lowered to 67°C for 2 hours, and the colloid was obtained after cooling;

[0028] (2) Mastication and mixing: process the colloid through plastic and mixing processes to obtain rubber;

[0029] (3) Molding: Put the rubber into the seal abrasive for heat treatment, first heat the temperature to 174°C for 2h, and use ultrasonic vibration for 20-24min, then lower the temperature to 88°C at 3°C / min and keep After 45min, the primary seal was made after cooling;

[0030] (4) Vulcanization: Put the primary seal in a vulcanization tank for vulcanization treatment at a temperature of 96°C and a hydrogen sulfide volume c...

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PUM

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Abstract

The invention discloses a processing method of a magnetic seal, which is characterized in that it includes the following aspects: (1) sol mixing, first melting natural rubber, silicon rubber, hydrogenated nitrile rubber, and then adding nylon, paraffin and other ingredients ; (2) Molding and mixing, the colloid is processed by plastic and mixing processes to obtain rubber; (3) Molding, putting the rubber into the seal abrasive for heat treatment; (4) Vulcanization: making the primary seal The parts are placed in a vulcanization tank for vulcanization treatment.

Description

technical field [0001] The invention belongs to the technical field of seal processing, and in particular relates to a processing method of a magnetic seal. Background technique [0002] The seal is used to fill the gap of the mechanical joint, which has the function of preventing internal oil or gas from leaking to the outside, and also isolates external gas, dust and other debris from entering the inside of the machine, resulting in a decrease in mechanical performance. It has waterproof, dustproof, and air leakage prevention. effect. Its main processing material is natural rubber or artificial synthetic rubber. Natural rubber is environmentally friendly, low in toxicity, less polluting, and has a good degradation effect. However, it is inferior to artificial synthetic rubber in terms of heat resistance, hardness and anti-corrosion performance. Poor, simply using natural rubber as the processing raw material of the seal is difficult to meet the performance requirements of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L83/04C08L15/00C08L77/00C08L91/06C08K13/02C08K5/09C08K3/04C08K3/34C08K3/16
CPCC08L7/00C08K2003/164C08K2003/168C08K2201/01C08L2205/035
Inventor 张文尧
Owner 宁国市宁和密封件厂
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