Isostatic Pressing Graphite
Isostatic graphite refers to a stone tool material obtained by pressing high-purity stone tool powder in a sealed liquid environment at normal temperature and transferring the powder by ultra-high pressure. Because the pressure in the liquid is equal on each side, it is called cold isostatic pressing. Shaped graphite has the same property values in different directions.
Compared with ordinary graphite, isostatic graphite products have a series of excellent properties, including: strong thermal stability, low expansion rate, excellent chemical resistance, excellent electrical and thermal conductivity, and good processability.
The main applications of isostatic graphite from graphite product manufacturers include: photovoltaic industry, semiconductor and LED industry, high temperature furnace, electric discharge machining, metal industry, glass and refractory industry.
Isostatic graphite is a new type of graphite material developed in the 1960s, which has a series of excellent properties. It has good heat resistance and heat resistance, isotropy, strong chemical corrosion resistance, and excellent machining performance.
Isostatic graphite not only has great achievements in civilian use, but also occupies an important position in the cutting-edge field of national defense. It is an irreplaceable material for the manufacture of single crystal furnaces, graphite crystallizers for metal continuous casting, and stoneware electrodes for EDM. It is also an advantageous material for manufacturing rocket nozzles, deceleration materials and reflective materials for graphite reactors. The main application areas are.
1. Application of isostatic graphite in nonferrous metallurgy:
In order to shorten the production process, reduce costs, improve quality, reduce labor intensity and environmental pollution, the production of metal materials has gradually developed in the direction of continuous casting for more than 20 years. So far, copper and aluminum have basically realized continuous casting production.
2. Application of isostatic bed graphite in atomic energy industry
In the process of nuclear reaction, nuclear fusion will also release a large amount of energy. In order for the phase and nuclear shadow to go on for a long time, it is necessary to melt the ionic body at a certain temperature. Stone black is an important material to maintain plasma stability. . In addition, graphite is also a neutron moderator and an excellent reflector, and its excellent characteristics have established its position in the field of nuclear industry.
3. The role of isostatic graphite in the solar industry
Due to the high strength, high density and good isotropy of the isostatic graphite material, the graphite parts made of it are heated during use, and the heating is relatively uniform. At the same time, the uniform density of the dry material can effectively reduce the material from rapid cooling and heat. internal stress (good thermal shock resistance), so the service life of equipment or appliances can be greatly extended, so in the semiconductor and solar energy industries, a large number of isostatic graphite (isotropic graphite) is used to make Cz type single crystal straight Graphite components in the furnace heat field; heaters for polysilicon casting furnaces. Components such as heaters for compound semiconductor manufacturing.
4. Other aspects:
In addition to the above-mentioned main uses, isostatic graphite is used in cemented carbide (vacuum furnace heaters, sintered plates, etc.), mining (manufacturing drill bit molds), chemical industry (heat exchangers and anti-corrosion parts), machinery (mechanical seals) , aerospace (nozzles, etc.), and other fields are widely used.
Jiangsu High Industry on the research and development and production of high-performance polyurethane isostatic pressing molds. Through in-depth cooperation with many isostatic pressing equipment manufacturers and in-depth study of the industry, the developed isostatic pressing polyurethane mold series products have the characteristics of long service life, high precision, small deformation, easy demoulding, etc., and are widely used in ceramics, etc. Static pressing mould, cemented carbide isostatic pressing mould, rare earth permanent magnet material isostatic pressing mould, graphite isostatic pressing mould, etc.
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