Production method of hot-pressing carbon graphite material

A production method and technology of carbon graphite, which is applied in the field of non-metallic materials, can solve problems such as poor self-repair ability, large degeneration of finished products, and leakage of mechanical seals, and achieve the effects of reducing resin consumption, small deformation, and improving thermal conductivity

Inactive Publication Date: 2013-01-23
WUXI ZHONGQIANG ELECTRIC CARBON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Poor thermal conductivity
[0004] 2. Easy to deform during production
[0005] 3. The Confucianism of the finished product is highly variable
[0006] 4. Poor self-repair ability
[0007] Due to the existence of these defects, the occurrence of mechanical seal leakage accidents

Method used

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  • Production method of hot-pressing carbon graphite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment one: the production method of hot-pressed carbon graphite material of the present invention adopts following processing steps: its formula ratio is counted in parts by weight:

[0029] 1. Preparation of resin binder:

[0030] Take 50 parts of phenolic resin, 35 parts of 99% alcohol, 4 parts of urotropine, and 1 part of oleic acid, add them into a stirring tank and stir them fully at a speed of 400 rpm, and stir at room temperature for 1 hour to make a phenolic resin bonded agent mixed solution.

[0031] 2. Preparation of clinker:

[0032] Add 10 parts of graphite powder, 5 parts of carbon black powder, 40 parts of pitch coke powder, and 40 parts of needle-shaped coke powder into a 200 liter kneading kettle and knead in the kneading kettle, start the kneading kettle heating equipment at the same time, knead for 1 hour, and the temperature At 110°C, add 38 parts of phenolic resin binder mixed solution, the phenolic resin accounts for 14% of the total carbon g...

Embodiment 2

[0047] Embodiment two: the production method of hot-pressed carbon graphite material of the present invention adopts following processing steps: its formula ratio is counted in parts by weight:

[0048] 1. Preparation of resin binder:

[0049] Take 55 parts of phenolic resin, 40 parts of 99% alcohol, 5 parts of urotropine, and 2 parts of oleic acid, add them into a stirring tank and stir them fully at a speed of 450 rpm, and stir at room temperature for 1.25 hours to make a phenolic resin bonded agent mixed solution.

[0050] 2. Preparation of clinker:

[0051] Add 14 parts of graphite powder, 8.5 parts of carbon black powder, 45 parts of pitch coke powder, and 45 parts of needle-shaped coke powder into a 200 liter kneading kettle and knead in the kneading kettle. At 115°C, add 40 parts of phenolic resin binder mixed solution, phenolic resin accounts for 14% of the total carbon graphite powder, at this time the temperature in the kettle drops to 55°C, at this temperature, st...

Embodiment 3

[0064] Embodiment three: the production method of hot-pressed carbon graphite material of the present invention adopts following processing steps: its formula ratio is counted in parts by weight:

[0065] 1. Preparation of resin binder:

[0066] Take 60 parts of phenolic resin, 45 parts of 99% alcohol, 6 parts of urotropine, and 3 parts of oleic acid, add them into a stirring tank and stir them fully at a speed of 500 rpm, and stir at room temperature for 1.5 hours to make a phenolic resin bonded agent mixed solution.

[0067] 2. Preparation of clinker:

[0068]Add 18 parts of graphite powder, 12 parts of carbon black powder, 50 parts of pitch coke powder, and 50 parts of needle-shaped coke powder into a 200 liter kneading kettle and knead in the kneading kettle, start the kneading kettle heating equipment at the same time, knead for 2 hours, the temperature At 120°C, add 42 parts of phenolic resin binder mixed solution, phenolic resin accounts for 14% of the total carbon gr...

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Abstract

The invention relates to a production method of a hot-pressing carbon graphite material, and is characterized by comprising the following steps of: stirring phenolic resins, 99% alcohol, urotropine and oleic acid into a stirring kettle to prepare phenolic resin adhesive mixing solution; adding graphite powder, carbon black powder, pitch coke powder and needle type coke powder into a kneading kettle, mixing and kneading, heating, adding the phenolic resin adhesive mixing solution, stirring and mixing to obtain a clinker; cooling the clinker, grinding powder, pressing and molding, forming and mold pressing, forming and processing, removing burr and fin, cleaning, and drying or blowing to a finished product through hot blast. According to the invention, by adopting a two-section pressing method, porosity in a press is reduced, the pressed density is improved, the intensity and the wear resistance of a product are improved, materials and air holes are uniformly distributed, creep property of the finished product is reduced, the product has small deformation in a production process, and the precision of the product is improved, by adopting an advance mixing and kneading process, the amount of the resins is reduced, and the heat conductivity of the product is improved, so that the quality grade of the hot-pressing carbon graphite material product is improved, thus the hot-pressing carbon graphite material product has wider purposes.

Description

technical field [0001] The invention relates to a production method of a hot-pressed carbon graphite material, and in particular belongs to the technical field of non-metallic materials. Background technique [0002] Carbon graphite material products formed by hot pressing with resin as a binder are called hot-pressed carbon graphite products. They have been used in industrial production as carbon materials for machinery and have a history of more than 50 years in my country. Compared with sintered machinery The application of carbon materials is early, and there is still a broad market. Hot-pressed carbon graphite materials are favored by manufacturers and users due to sufficient raw and auxiliary materials, reasonable prices, and simple manufacturing processes, which are suitable for mass production. As a binder, resin has relatively large performance limitations, and the performance of the product is basically the same as that of resin. Compared with sintered carbon graphit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/02C04B26/12
Inventor 吴强
Owner WUXI ZHONGQIANG ELECTRIC CARBON CO LTD
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