Production process and main uses of isostatic pressed graphite

Isostatic graphite is a new type of graphite material developed in the 60s of the last century, with a series of excellent properties. For example, hydrostatic graphite has good heat resistance, and in an inert atmosphere, its mechanical strength not only does not decrease with the increase of temperature, but increases, reaching the ** value at about 2500 °C; Compared with ordinary graphite, the structure is fine and dense, and the uniformity is good: the thermal expansion coefficient is very low, and it has excellent thermal shock resistance: isotropic; It has strong chemical corrosion resistance, good thermal and electrical conductivity; It has excellent machinability.
It is precisely because of this series of excellent properties that isostatic graphite is widely used in metallurgy, chemistry, electrical, aerospace and atomic engineering, and with the development of science and technology, the application field is still expanding.

2023-12-30 14:24:56Wang Xuemei249

Isostatic graphite requires structural isotropic raw materials, needs to grind raw materials into finer powders, needs to apply cold isostatic pressing technology, the roasting cycle is very long, in order to achieve the target density, multiple impregnation and roasting cycles are required, and the graphitization cycle is much longer than ordinary graphite.

Another method of producing isostatic graphite is to use mesophase carbon microspheres as raw materials. First, the mesophase carbon microspheres were oxidized and stabilized at a higher temperature, then isostatic pressing, and then further calcined and graphitized