Furnace Structure

• Double-layer steel casing.
• High purity 1800^oC grade fibrous alumina insulation 
• Alumina processing tube, vacuum & gas sealing flange with valves, vacuum gauge, and thermal blocks are included 
• A quenching liquid tank is built on the bottom for immediate use
• Quench sample up to 50mm dia, x 65 mm L under inert gases and vacuum
• Automatic electromagnet sample release fixture is included

Electromagnet Sample Release for Quenching

• A full automatic electromagnet sample release flange is included
• A hinged plate hooks the cable, which pulls the sample.
• The hinged plate drops when the electromagnet powers off. The sample and the cable fall into the quenching tank.
• Rings are available for hanging the tube block with cables.
• The bottom flange is connected with a 4" gate valve (manually operated ) via a CF-100 adaptor
• The gate valve is connected with a quenching media container in size 400 x400 x 200 H ( mm )
• Caution: You must use ice water or cooled oil as a quenching agent if quenching under a vacuum.

1. Flange Structure	2. Flange Operation	3. Gate Valve	4. Quenching Tank	5. Quenching	6. W Pulling Wire

Power Input

• Single Phase, 220V AC +/- 10%, 50/60 Hz
• Max. 4000W (4 KW )
• 20A air breaker required
• 10 feet long 10-3 AWG power cable is included. Extra length cable can be ordered by clicking the picture below
• The plug is not included. Browse our catalog for compatible plugs or obtain one from a local hardware store. 

 Working Temperature:

• Max. working temperature: 1700 ^oC (3092 ^oF) for < 1 hours
• Continuous working temp.: 800-1600 ^oC (3002 ^oF)

Heating / Cooling Rate

•  5 ^oC / min above 1200 ^oC
• 10 ^oC/min below 1200^oC

Heating Elements &
Heating Zone

• 4 pcs of U-shaped 1800 grade MoSi2
• Heating Zone Length: 130mm
• Constant Temperature Zone: 60 mm within +/- 5 ^oC

Temperature Controller

Optional Eurotherm 3000 

Processing Tube

• 99%High purity Al₂O₃ Ceramic, ID: 54mm; OD: 60 mm x Length 850 mm
• Two fibrous ceramic tube blocks are included to block heat radiation from the inside tube. (Ceramic blocks must be fully inserted into the furnace chamber before heating)
• You may consider using a tungsten wire to hang up a crucible or sample to quench sample ( click Pic right to learn )
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Vacuum Sealing and Valve

• Vacuum pressure can reach 50 mTorr by a quality mechanical vacuum pump and 10^^-5 torr by turbo molecular pump. Please click the picture below to see the flange assembly details.
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• Optional: You may consider using the parts below to increase the vacuum efficiency 
• Please click here to order a digital vacuum gauge for precision vacuum control up to 10^-4 torr (see picture below and click to enlarge)
• KF25 Stainless steel Bellows 
• KF25 Quick Clamps
• Mechanical pump for 10-2 torr or turbopumps for 10-4 torr vacuum
•                   

 Quenching operation

• One stainless steel tank is located on the bottom of the furnace to contain quenching liquid.
• One large gate valve is built on the bottom tube
• One electromagnet is installed on the top flange and holds sample hanging wire up to 500 g
• Touch the release button of the electromagnet on the temperature control unit, the sample will drop into the liquid tank.
• Before release, the sample must fill argon gas to 5 psi and open the gate valve

Hermetic Quenching Tank
(Optional)

Laptop, software & WiFi Control (Optional)

Certificates

Warning

MoSi2 heating element is used in high temperatures under an oxidizing atmosphere. During the oxidizing process, the SiO2 protective film is formed again the heating elementfrom melting during sustained use. The MoSi2 heating element must not be used at the temperature between 400 ^oC and 700 ^oC for a long time, otherwise, the element will be cremated under the strong oxidizing atmosphere at low temperatures.

Application Notes

• In order to obtain accurate temperature inside the tube furnace, you need to calibrate the temperature before use, please click here to learn how.
• How to set up a ceramic tube and vacuum flange for an MTI Tube furnace.
• The tube furnaces with alumina tube are designed for use under vacuum and low pressure < 0.02 Mpa / 0.2 Bar/ 3 PSI 
• Never use a graphite crucible in the alumina tube.
• Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.
• The flow rate for gasses should be limited to < 200 SCCM ( or 200ml/min )
• Vacuum limit definition for all alumina tube furnaces: * Vacuum pressures may only be safely used up to 1500°C

GSL-1700X-80VTQ-UL

HEL1800T-30300

TC-B-GSL-16

F-T-block-70