Silicon nitride extrusion roller si3n4 ceramic guide wheel
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Silicon nitride extrusion roller si3n4 ceramic guide wheel
Silicon nitride ceramic offers exceptional thermal shock, extreme thermal stress resistance, excellent wear resistance, great chemical resistance, and easier machinable features. It’s always made use of producing refractory ceramic parts, anti-corrosion ceramic parts, ceramic seal parts, ceramic cutter/blade for machining.
Our company supplies a great of silicon nitride ceramic components, including Si3N4 ceramic tube, Si3N4 ceramic plate, Si3N4 ceramic rod, and various complicated silicon carbide ceramic structural parts.
Silicon Nitride (Si3N4) has good high temperature strength, creep resistance and oxidation resistance.In addition, its low thermal expansion coefficient gives excellent thermal shock resistance compared with most ceramic materials.
Silicon Nitride Ceramic Properties | |
Color: | Gray and Gray-black |
Density: | 3.24~3.28 g/cm3 |
Vickers Hardness: | 14 Gpa |
Maxium Use Temperature: | 1500 ℃ |
Thermal Conductivity: | 22-42 W.(M.K)-1 |
Bending Strength: | ≥ 900 Mpa |
Fracture Toughness: | 6~8 (Mpa.m1/2) |
Thermal Expansion Coefficient (at 0~1400℃): | 2.95~3 ×10-6/℃ |
Thermal Conductivity @ 20°C | W/mK |
Thermal Expansion a at 20–100°C | 10-6/K |
Specific Heat | 100°C |
Silicon nitride extrusion roller si3n4 ceramic guide wheel
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
The prime features of Si3N4 Silicon Nitride Ceramic
1. Extraordinary thermal shock, it can withstand up to1000ºC
2. It’s easier to do precise machining, the tolerance can be 0.001mm
3. Chemical corrosion resistance under high temperature, except for HF and H3PO4
4. Extreme wear and abrasion resistance., much better than stainless steel
5. Great mechanical properties, hardness, compressive and flexural strength are much higher stainless steel
Application of silicon nitride ceramics:
Silicon nitride ceramic parts work as welding pins, Ceramic Shafts, Ceramic bearings, Ceramic substrates, Ceramic piston plungers, Ceramic sliders, Ceramic seal ring, Air turbine blades which are widely used in machinery, electronics, semiconductor, petroleum, chemical industry, smelting, and other industries