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Method for producing dipping graphite tube

A production method and technology for impregnating graphite, applied in the production field of impregnated graphite tubes, can solve the problems of easy cracking, bursting, blistering, etc., and achieve the effect of improving product quality and long service life

Active Publication Date: 2008-05-28
南通子扬化工设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing graphite tubes have problems such as foaming, cracks, and bursts, and the working performance and working life are not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] A kind of production method of impregnated graphite tube, comprises the following steps successively:

[0013] (1) Batching molding: after graphite powder and pitch are mixed, put into molding die and extrude; wherein the consumption ratio of graphite powder and pitch is 30~40: 15~20 by weight (example 30: 15, 31: 35, 30:40, 38:20, 38:39);

[0014] (2) roasting: put the formed tube into a roasting furnace for roasting;

[0015] (3) Impregnation: further drying the roasted formed tube, impregnating it in phenolic resin, and then heat-treating it to obtain the finished product.

[0016] 50%~100% (for example, 50%, 80%, 100%) of the weight by 100 mesh in the graphite powder raw material, the asphalt adopts medium temperature asphalt. During extrusion molding, the temperature of the machine head is 125-155°C (for example, 125°C, 140°C, 155°C), and the temperature of the molding die is 140-165°C (140°C, 150°C, 165°C). (Example 6MPa, 10MPa, 12MPa) pre-compression treatment...

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PUM

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Abstract

The invention discloses a production method of a dip graphite tube, comprising steps of blending, molding, roasting, and dipping, etc. Finished products produced by the method of the invention has the advantages of long service life and no phenomenon of bubble, crackle and cracking, etc.

Description

Technical field: [0001] The invention relates to a production method of an impregnated graphite tube. Background technique: [0002] The existing graphite tubes have problems such as foaming, cracks, and bursts, and the working performance and working life are not ideal. Invention content: [0003] The purpose of the present invention is to provide a production method of impregnated graphite tube with good product quality. [0004] Technical solution of the present invention is: [0005] A kind of production method of impregnated graphite tube is characterized in that: comprises the following steps successively: [0006] (1) Batching molding: After mixing graphite powder and pitch, put it into a molding die and extrude; wherein the dosage ratio of graphite powder and pitch is 30-40:15-20 by weight; [0007] (2) roasting: put the formed tube into a roasting furnace for roasting; [0008] (3) Impregnation: further drying the roasted formed tube, impregnating it in phenol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/48C04B41/63
Inventor 白网荣吴建飞保清祥李瑞清卢政陈红林
Owner 南通子扬化工设备有限公司
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