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A kind of graphite enamel material and preparation method thereof

A production method and graphite technology, applied in the field of new materials, can solve the problems of heat transfer capacity, high temperature resistance, oxidation resistance defects, etc., and achieve the effect of temperature uniformity, no reduction in strength at high temperature, and good heat transfer

Inactive Publication Date: 2020-07-07
ZHONGNAN DIAMOND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the table that common materials on the market, such as alloys, magnesium-aluminum-silicon ceramics, quartz, graphite, and medical enamel plates, all have certain defects in heat transfer capacity, high temperature resistance, and oxidation resistance.

Method used

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  • A kind of graphite enamel material and preparation method thereof
  • A kind of graphite enamel material and preparation method thereof
  • A kind of graphite enamel material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of graphite enamel material, comprising the steps of:

[0032] 1) Making graphite matrix: choose a density of 1.8g / cm 3 Above, graphite rods with a thermal conductivity above 90W / mK are used as matrix materials, which are processed into corresponding shapes by sawing and grinding according to requirements to obtain graphite matrix;

[0033] 2) Titanium coating on the surface of graphite matrix: Coating a layer of metal titanium on the surface of graphite matrix by evaporation method, the specific operation is as follows:

[0034] A. Wet the surface of the graphite matrix with an adhesive; ) mixed;

[0035] B. Sprinkle the coating powder on the surface of the wetted graphite matrix; the coating powder is composed of TiO with a mass ratio of 37:53:20 2 , MgCl 2 Mixed with Al powder;

[0036] C. Place the graphite matrix in a vacuum furnace at 850°C for 3 hours under a vacuum of 3Pa;

[0037] D. Cool to below 100°C and take out of the oven. When ...

Embodiment 2

[0044] A preparation method of graphite enamel material, comprising the steps of:

[0045] 1) Making graphite matrix: choose a density of 1.8g / cm 3 Above, graphite rods with a thermal conductivity above 90W / mK are used as matrix materials, which are processed into corresponding shapes by sawing and grinding according to requirements to obtain graphite matrix;

[0046] 2) Titanium coating on the surface of graphite matrix: Coating a layer of metal titanium on the surface of graphite matrix by evaporation method, the specific operation is as follows:

[0047] A. Wet the surface of the graphite matrix with an adhesive; ) mixed;

[0048] B. Sprinkle the coating powder on the surface of the wetted graphite matrix; the coating powder is composed of TiO with a mass ratio of 37:53:20 2 , MgCl 2 Mixed with Al powder;

[0049] C. Place the graphite matrix in a vacuum furnace at 750°C for 6 hours under a vacuum of 3Pa;

[0050] D. Cool to below 100°C and take out of the oven. When ...

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Abstract

The invention relates to a production method of a graphite enamel material. The method concretely comprises the following steps: 1, producing a graphite matrix body: selecting a graphite bar or board as a matrix body material, and processing the matrix body material into a corresponding shape according to demands to obtain the graphite matrix body; 2, plating titanium on the surface of the graphite matrix body: A, wetting the surface of the graphite matrix body by using an adhesive; B, sprinkling plating powder to the wetted surface of the graphite matrix body; C, performing heat preservation on the graphite matrix body for 3-6h under conditions of the vacuum degree being 0.5-5Pa and the temperature being 600-850 DEG C; and D, performing cooling to the temperature of 100 DEG C or less, discharging the processed material from a furnace, performing cooling to a room temperature, and brushing away redundant powder by using a hair brush; and 3, preparing a titanium nitride layer: putting the graphite matrix body of which the surface is plated with the titanium in the step 2 to a vacuum furnace, performing vacuumizing to 0.1Pa or less, and starting heating; when the temperature is raised to 950-1200 DEG C, introducing nitrogen to 0.05+ / -0.02MPa, and performing heat preservation for 20-200min; and performing cooling to the temperature of 100 DEG C or less, and discharging the finished material from the vacuum furnace. The graphite enamel material has the advantages of high heat transmission, oxidation resistance, high-temperature resistance, temperature shock resistance and the like, and can be made into a furnace body supporting material, a material frame, a material plate and the like.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a graphite enamel material and a manufacturing method thereof. Background technique [0002] Heat treatment of materials or workpieces is a common process method. In the process of product development, sometimes a process of heating graphite core material or other finely divided materials (workpieces) is involved. At this time, support racks for placing materials or trays for containing materials are required. This type of material rack or tray should meet the following conditions: 1) High thermal conductivity, so that the heating height of the material is uniform; 2) There is no obvious change in material composition and strength during heating; 3) It can withstand oxidative atmospheres such as carbon dioxide; 4) The surface should be clean and smooth without sticking to dirty materials; 5) It can withstand rapid temperature changes to improve production effic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/90C04B35/52
CPCC04B35/522C04B41/009C04B41/52C04B41/90C04B2235/9607C04B2235/9684C04B41/5133C04B41/5068
Inventor 张凤岭沈远王国成魏争艳范实宋子衡
Owner ZHONGNAN DIAMOND CO LTD
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