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Improvement method and device for prolonging service life of graphite crucible

A graphite crucible and life-span technology, applied in lighting and heating equipment, furnaces, sustainable manufacturing/processing, etc., can solve the problems of graphite oxidation, failure to measure the final temperature, and fracture, so as to increase the fluidity of powder materials and improve the Secondary spraying effect, the effect of improving the bonding strength

Active Publication Date: 2022-03-01
湖州启源金灿新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high final temperature of graphitization, many graphite crucibles oxidize or even break before reaching the final temperature, making it impossible to measure the final temperature

Method used

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  • Improvement method and device for prolonging service life of graphite crucible
  • Improvement method and device for prolonging service life of graphite crucible
  • Improvement method and device for prolonging service life of graphite crucible

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] An improvement method for improving the life of graphite crucible, including the following steps:

[0051] (1) Mixed powder preparation: Tungsten oxide, Si powder, C powder and chloride are mixed in mass 45: 15: 10: 30, resulting in mixed powder;

[0052] (2) Preprocessing: Specifically, the graphite crucible substrate is roughened, and then ultrasonically cleaned in anhydrous ethanol, and then immersed in a sodium carbonate solution, then soaked in the nitric acid solution, then washed, finally placed Dry or dry in the air;

[0053] (3) Elementary bath: The activated graphite crucible was carried out in the mixed powder to obtain a graphite crucible having a primary tungsten coating; specifically, the activated graphite crucible was buried in a mixed powder into a high temperature vacuum graphite. The furnace was held at 3,000 ° C under an argon gas atmosphere, and then the surface of the coating was placed flat with sandpaper and dried to obtain a graphite crucible having...

Embodiment 2

[0057] An improvement method for improving the life of graphite crucible, including the following steps:

[0058] (1) Mixed powder preparation: Tungsten oxide, Si powder, C powder and chloride are mixed in mass 60: 30: 25: 5: 50: 25: 5, resulting in mixed powder;

[0059] (2) Preprocessing: Specifically, the graphite crucible substrate is roughened, and then ultrasonically cleaned in anhydrous ethanol, and then immersed in a sodium carbonate solution, then soaked in the nitric acid solution, then washed, finally placed Dry or dry in the air;

[0060] (3) Elementary bath: The activated graphite crucible was carried out in the mixed powder to obtain a graphite crucible having a primary tungsten coating; specifically, the activated graphite crucible was buried in a mixed powder into a high temperature vacuum graphite. The furnace was injected at 3500 ° C for 1.5 h at an argon gas atmosphere, and then the surface of the coating was placed flat and dried to obtain a graphite crucible h...

Embodiment 3

[0064] An improvement method for improving the life of graphite crucible, including the following steps:

[0065] (1) Mixed powder preparation: Tungsten oxide, Si powder, C powder and chloride are mixed in mass 50: 20: 15: 20, resulting in mixed powder;

[0066] (2) Preprocessing: Specifically, the graphite crucible substrate is roughened, and then ultrasonically cleaned in anhydrous ethanol, and then immersed in a sodium carbonate solution, then soaked in the nitric acid solution, then washed, finally placed Dry or dry in the air;

[0067] (3) Elementary bath: The activated graphite crucible was carried out in the mixed powder to obtain a graphite crucible having a primary tungsten coating; specifically, the activated graphite crucible was buried in a mixed powder into a high temperature vacuum graphite. The furnace was insulated at 3200 ° C for 1.2 h under an argon gas atmosphere, and then the surface of the coating was placed flat and dried, and the graphite crucible having a p...

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Abstract

The invention relates to the technical field of graphitization furnaces, in particular to an improvement method and device for prolonging the service life of a graphite crucible. The improvement method for prolonging the service life of the graphite crucible comprises the following steps that mixed powder is prepared, specifically, tungsten oxide, Si powder, C powder and chlorine salt are evenly mixed according to the mass part ratio of 45-60: 15-30: 10-25: 5-30, and the mixed powder is obtained; the graphite crucible base material is polished and pretreated, and an activated graphite crucible is obtained; primary bath: carrying out primary bath on the activated graphite crucible in the mixed powder to obtain a graphite crucible with a primary tungsten coating; and secondary spraying: spraying powder containing metal tungsten powder is subjected to plasma spraying on the surface of the graphite crucible with the primary tungsten coating, and the graphite crucible with the gradient tungsten coating is obtained. According to the method, the graphite crucible can be prevented from being oxidized and even fractured in the graphitization process; the service life is prolonged.

Description

Technical field [0001] The present invention relates to the technical field of graphitization furnaces, and more particularly to improve methods and apparatus for improving the life of graphite crucible. Background technique [0002] Graphite furnace, mainly used for sintering and graphitization of carbon materials, pi film graphit, thermally conductive material graphitization, carbon fiber rope sintering, carbon fiber filament, graphite purification, graphite powder purification and other graphite in carbon High temperature treatment such as materials. Its use temperature up to 3000 ° C. High production efficiency, energy saving and power saving. [0003] The main heating of the current carbon industrial graphitized production is Aiqi Dynasty, and the principle of Ichqixon furnace graphitization heating is mainly fever through the resistance between the products, and then heats the product in the electric resistance, the final product and resistance The material is commonly heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88C23C4/134C23C4/067C23C4/02F27B17/00
CPCC04B41/88C04B41/5133C04B41/009C23C4/134C23C4/067C23C4/02F27B17/005F27B17/0075C04B41/455C04B41/4527C04B41/52C04B35/522Y02P20/10
Inventor 吕猛胡博金海侹刘锐剑
Owner 湖州启源金灿新能源科技有限公司
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