Silicon Nitride Sintering Furnace Application In Automobile Industry
Nitride Ceramicssintering Furnace (for pressure sintering of silicon nitride, aluminum nitride, and boron nitride ceramic materials)
Silicon Nitride Sintering Furnace Application In Automobile Industry
Furnace Selections
| Furnace Type | Horizontal type(Max Working pressure:58bar/98bar) |
Vertical type (Max Working pressure:58bar/98bar) |
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| RDE-3312-N | RDE-4412-N | RDE-5512-N | RDE-5518-N | RDE-1500-N | RDE-3800-N | |
| Usable Space (W*H*L) | 300*300*1200mm | 400*400*1200mm | 500*500*1200mm | 500*500*1800mm | Φ1000*1500mm | Φ3250*3800mm |
| Max.Charge Load | 300kg | 500kg | 1200kg | 1500kg | 1000kg | 4000kg |
| Power Rating | 320KVA | 320KVA | 430KVA | 600KVA | 500KVA | 720KVA |
| Heating Zone | 2/3 Zones | 3 Zones | 3 Zones | 3 /4 Zones | 4 Zones | 6 Zones |
| Cooling time | ≤5h | ≤6h | ≤7h | ≤8h | ≤10h | ≤12h |
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Empty furnace, cooling from sintering temperature 2100℃ to 100℃. (water temperature≤26℃, water pressure 2-3bar, 55bar(95bar)≤Ar pressure≤58bar(98bar). |
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| Service Life | 20years/6000furnace cycles | |||||
| Max. Working Temp | 2100℃ | |||||
| Temperature Measurement | Special design High temperature W-Re5/26 Thermocouple | |||||
| Max Vacuum Degree | 1Pa (under cold, empty, dry furnace) | |||||
| Leakage Rate | 3Pa/h (Average value under cold, empty, dry furnace) | |||||
| Wax Collection | ≥98%(Argon gas negative dewaxing, 3-time average value) | |||||
| Forming Agent | Paraffin,PEG,Rubber,(C12H22O5)n etc. | |||||
| Input gas | N2, Ar, H2 | |||||
| Functions |
Automatic Positive Pressure, Negative Pressure Leak Detection Ar Negative Pressure Dewaxing/H2 Micro Positive Pressure Dewaxing Vacuum Sintering Partial Pressure Sintering (Static, Dynamic) Pressure Sintering Rapid Cooling Fully-automatic control & Safety interlock& Breakpoint continuing heating & Wireless remote control& Self-diagnosis |
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Facts about Si3N4
There exist three crystallographic structures of silicon nitride (Si3N4), designated as α, β and γ phases.The α and β phases are the most common forms of Si3N4, and can be produced under normal pressure condition. The γ phase can only be synthesized under high pressures and temperatures and has a hardness of 35 GPa.
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| trigonal α-Si3N4 | hexagonal β-Si3N4 | cubic γ-Si3N4 |
Automobile industry
One of the major applications of sintered silicon nitride is in automobile industry as a material for engine parts. Those include,
- In diesel engines, glowplugs for faster start-up;
- Precombustion chambers (swirl chambers) for lower emissions, faster start-up and lower noise;
- Turbocharger for reduced engine lag and emissions. In spark-ignition engines, silicon nitride is used for rocker arm pads for lower wear, turbocharger turbines for lower inertia and less engine lag, and in exhaust gas control valves for increased acceleration. As examples of production levels, there is an estimated more than 300,000 sintered silicon nitride turbochargers made annually
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