|Furnace Type||Horizontal type(Max Working pressure:58bar/98bar)||
(Max Working pressure:58bar/98bar)
|Usable Space (W*H*L)||300*300*1200mm||400*400*1200mm||500*500*1200mm||500*500*1800mm||Φ1000*1500mm||Φ3250*3800mm|
|Heating Zone||2/3 Zones||3 Zones||3 Zones||3 /4 Zones||4 Zones||6 Zones|
Empty furnace, cooling from sintering temperature 2100℃ to 100℃.
(water temperature≤26℃, water pressure 2-3bar, 55bar(95bar)≤Ar pressure≤58bar(98bar).
|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|
Automatic Positive Pressure, Negative Pressure Leak Detection
Ar Negative Pressure Dewaxing/H2 Micro Positive Pressure Dewaxing
Partial Pressure Sintering (Static, Dynamic)
Fully-automatic control & Safety interlock& Breakpoint continuing heating & Wireless remote control& Self-diagnosis
Application in various industries
Silicon nitride bearings are both full ceramic bearings and ceramic hybrid bearings with balls in ceramics and races in steel. Silicon nitride ceramics have good shock resistance compared to other ceramics. Therefore, ball bearings made of silicon nitride ceramic are used in performance bearings. A representative example is use of silicon nitride bearings in the main engines of the NASA's Space Shuttle
Silicon nitride has long been used in high-temperature applications. In particular, it was identified as one of the few monolithic ceramic materials capable of surviving the severe thermal shock and thermal gradients generated in hydrogen/oxygen rocket engines. To demonstrate this capability in a complex configuration, NASA scientists used advanced rapid prototyping technology to fabricate a one-inch-diameter, single-piece combustion chamber/nozzle (thruster) component. The thruster was hot-fire tested with hydrogen/oxygen propellant and survived five cycles including a 5-minute cycle to a 1320 °C material temperature.
Silicon nitride has many orthopedic applications.The material is also an alternative to PEEK (polyether ether ketone) and titanium, which are used for spinal fusion devices. It is silicon nitride's hydrophilic, microtextured surface that contributes to the material's strength, durability and reliability compared to PEEK and titanium. Certain compositions of this material exhibit anti-bacterial, anti-fungal, or anti-viral properties
The first major application of Si3N4 was abrasive and cutting tools. Bulk, monolithic silicon nitride is used as a material for cutting tools, due to its hardness, thermal stability, and resistance to wear. It is especially recommended for high speed machining of cast iron. Hot hardness, fracture toughness and thermal shock resistance mean that sintered silicon nitride can cut cast iron, hard steel and nickel based alloys with surface speeds up to 25 times quicker than those obtained with conventional materials such as tungsten carbide. The use of Si3N4 cutting tools has had a dramatic effect on manufacturing output. For example, face milling of gray cast iron with silicon nitride inserts doubled the cutting speed, increased tool life from one part to six parts per edge, and reduced the average cost of inserts by 50%, as compared to traditional tungsten carbide tools.
Silicon nitride is often used as an insulator and chemical barrier in manufacturing integrated circuits, to electrically isolate different structures or as an etch mask in bulk micromachining. As a passivation layer for microchips, it is superior to silicon dioxide, as it is a significantly better diffusion barrier against water molecules and sodium ions, two major sources of corrosion and instability in microelectronics. It is also used as a dielectric between polysilicon layers in capacitors in analog chips.
Si3N4 cantilever used in atomic force microscopes