The use and development direction of isostatic graphite
- Graphite for solar cells and semiconductor wafers: Graphite materials for photovoltaic industry: Because of the high-strength, high-density, graphite components of isostatically pressed graphite materials which are heated and heated uniformly during use, and at the same time, the density of materials is uniform which can effectively reduce the internal stress generated by the quenching and rapid heat of the material (good thermal shock resistance), so it can greatly extend the service life of equipment or appliances. Therefore, in the semiconductor and solar industry, a large amount of isostatic graphite is used making Cz-type single crystal straight pull furnace thermal field graphite parts (crucible, heater, guide tube, cover, etc.); polysilicon melting furnace heater, compound semiconductor manufacturing heater, crucible, and other components.
- Advantages of graphite for EDM: The specific gravity of graphite is 1/5 of that of copper, and the weight of graphite of the same volume is 5 times lighter than that of copper. It is easy to manufacture large molds; graphite processing speed is fast, generally 3 to 5 times faster than ordinary metal, which can reduce tool wear and electrode loss; graphite has high melting point and is not easy to be deformed, so there is no need to worry about deformation and damaged workpiece due to excessive processing. Graphite is generally not required to be polished after processing. It reduced errors and reduced production cycles. Graphite's electric cremation processing speed is fast and the loss is small. As long as the reasonable processing parameters are matched, the graphite electrode can achieve zero loss in the theoretical sense and reduce the number of repeated processing of the electrode. Because graphite materials have the above advantages over copper materials, many mold factories are now converting to graphite processing to shorten the lead time of products and to enhance their competitiveness in the market.
Isostatic Graphite
High gas cooled reactor core structure graphite material: There are 2 main differences between nuclear graphite and conventional engineering graphite, nuclear purity and radiation damage resistance. The quality requirements of nuclear graphite in the cold state are: large size, stable quality, good thermal stability, low thermal expansion coefficient, and nuclear purity (high purity below 50 ppm). Static graphite is a new type of graphite material, which is a fine product in graphite materials. Due to a series of excellent characteristics, it will inevitably be closely linked with high-tech and national defense technology, and become one of the most valuable new materials in the 21st century. With the economic development of the economy, the domestic and international market capacity of static pressure graphite is increasing day by day, and the development potential is huge.
