OTF-1200X-II-HPV is a high pressure verticle split tube furnace with two heating zones.
Processing tube is made of 70 mm OD. Ni based superalloy with 1100oC max working temperature, which is designed for growing crystal via high pressure hydro-thermal method.
SPECIFICATIONS
Working Pressure vs. Working Temperatue
•Pressure calculation based on safety factor 3 for 6000 hours service life
○ 200 Bar max. at ≤800°C ○ 150 Bar max. at ≤900°C ○ 100 Bar max. at ≤1000°C ○ 50 Bar max. at ≤1100°C
Working Gases
•Inert gas and oxygen •No hydrogen or any flammable gas
Heating Temp.
•1100°C max.for < 1hr •1000°C for continuous
Heating Rate
≤10°C/min
Heating Element
Fe-Cr-Al Alloy doped by Mo
Heating Zone
•Two heating zones : 200 mm + 200 mm •Total heating zone length： 400 mm •Constant temp. zone : 175 mm ±2°C
Temp. Control
•Three precision digital temperature controller with 30 segments programmable •PID control method with protection of over-temp. and thermal couple broken •Temperature stability : ±1°C •PC control software and interface are included for PC operation
Positive Pressure Sensor
•One digital pressure transduceris installed in high pressure flange •One pressure controller is included. the release vlave will automatically open when pressure reach setting pressure. •Pressure Measurement Range : 0 ~ 15 Mpa
Process Vessel
•Nickel based super-alloy GH747 (Click to download GH747 nickel based alloy datasheet) •Φ70 OD × Φ35 ID ×526 L mm, Norminal Capacity : 500 ml •Attention : Processing Tube is consumable part, you can click picture below to order replacement or spare one. •Optional torque wrench is available here to avoid overtighten the flange bolts.
Flange and Fitting
•A pair of 63mm CF type flanges is included (w/ high pressure valve and 1/4 tube fitting) •2 pcs Copper o-rings are included ( spare cupper O-ring is available as cunsumable. •The flange is cooling by forced air via aluminium heat-sink
Optional Parts ( with extra cost )
•You may order Heavy Duty Rotary Vane Vacuum Pump (7.8 CFM -240 L/m) - EQ-YTP-50 for experiment under vacuum condition •Please consider the Turbomolecular Vacuum Pump Station (up to 1E-7 mbar) - EQ-PV-HVS2 for high vacuum level •Gas flow control system is available upon reuqest ( see picture below right )
Voltage
AC 208 - 240V 50/60Hz
Power
3 KW (20A breaker required)
Dimension
900 × 600 × 1330 mm
Operation Instruction
Application Notes
•The heating temperature must be limited by the certain pressure level due to vessel material strength.
Please refer to the specifications. •The pressure is increasing while the temperutre is rising during operation.
So you need to calculate the pressure changing towards your target temperature and set a safe value of pressure during process.
Safety Notes
•Ni based Super-alloy ( Waspaloy or equivalent) is a reliable processing tube which can be used under high temperature and high pressure.
It has excellent ductility and tensile property so only creep deformation happens under overpressure destruction test and following by a crack formed (usually at the hot zone at the center of tube) to release the pressure.
Brittle fracture won’t happen in the overpressure destruction test which means no tube explosion will happen under overpressure •The PIC at left shows left Ni based Super-alloy processing tube under overpressure test •Attention :for the use with flammable, toxic or corrosive gases, you must contact MTI engineering group for the consultation to know all the prerequisites and precautionary measures. •Attention : A two stage pressure regulator must be installed on gas cylinder to limit the pressure to below 3 PSI for safe operation.Click here to learn the installation of a gas regulator.
