...Silicon nitride guide rollers are more resistant to high temperature, high hardness, high toughness, impact resistance and oxidation resistance. At the same time, silicon nitride guide rolls are oil-free, self-lubricating, low in density and light in weight. The service life is more than ten times that of the alloy guide roller.
Silicon Nitride (Si3N4) Characteristics:
1 Good thermal shock resistance
2 Creep resistance
3 Low density
4 High fracture toughness
5 High hardness and wear resistance
6 Electrical resistivity...