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1500°C Atmosphere Controlled Quenching Furnace with 82 mm OD Mullite Tube - OTF-1500X-80-VTQ

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Item Number: OTF-1500X-80-VTQ
Transported by LTL Freight (Truck)


Upgrade to Eurotherm Temp. Controller
OTF-1500X-80-VTQ is a split vertical quenching tube furnace with 84 mm OD mullite tube, which is designed for quenching sample from high temperature ( Max. 1500°C) into ice water or oil rapidly to study material phase transition and microstructure.
(Auto electromagnetic sample release flange is added since 07/21/2016)
(Mechanically controlled gate valve was updated to electrically controlled since 6/26/2017 )


Furnace Structure
  • Double layer steel structure with air cooling to keep case temperature < 65oC.
  • Vertical and splittable for easy installation.
  • The tube is sealed by a gate valve at the bottom flange. For quenching, open the gate valve and let the sample drop directly into the liquid container by activating the electromagnetic sample release.
  • Operation control made easy with newly designed electric gate valve.
  • Electromagnet sample release flange with water cooling is included.

Input Power

  • AC 208-240V Single Phase, 50/60 Hz
  • KW (40A Breaker)

Heating Temperature

  • 1500oC < 30 minutes
  • 1400oC < continuous

Max. Heating Rate

  • ≤ 10oC /min

Electromagnet Sample Release Flange
Quenching Media Tank

  • Fully automatic electromagnet sample release flange.
  • Hinged plate hooks the cable, which pulls the sample.
  • 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.
  • Improved top flange design allows easy sample reload without uninstalling all parts of the flange.
  • Bottom flange is connected with a 4" gate valve ( electrically operated ) via CF-100 adaptor.
  • The gate valve is connected with a quenching media container in size 400 L x400 W x 200 H mm.
  • Caution: You must use ice water or cooled oil as quenching agent if quenching under vacuum.
1. Flange Structure 2. Flange Operation 3. Gate Valve 4. Quenching Tank 5. Quenching 6. Pulling Cable
  • Compared to electromagnet cable drop quenching, traditional approach (Cable Cut Quenching) consumes cables.
    Trad. Quenching in Air Trad. Quenching in Vacuum

Heating Element

  • 1500°C grade SiC---12 pcs

Tube Size and Materials

  • Mullite tube made in the USA
  • OD:82 mm x ID 73:mm x Length: 1000 mm (included)

Heating Zone

  • Heating Zone length:            440 mm 
  • Constant Temperature:       150 mm ( within+/- 1oC)
Temperature Controllers
  • 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
  • Built in PID Auto-Tune function with overheating & broken thermocouple broken protection.
  • Over-temperature protection and alarm allow for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • Five K-type thermocouples (one for each zone).
  • RS485 Communications Port.
  • PC controlled software and interface module are optional. Please select the package option. 

Temperature controller (optional)

  • MTS02-Y Temperature control software kit (for YD518P series controllers) + 15" laptop package is available at the options bar. Click for the detail information about the MTS02-Y software kit. 
  • You may upgrade the temperature controller to the Eurotherm 3504 Temperature Controller which is fully compatible with LabVIEW. This package includes a Eurotherm 3504 programmer, a communication cable (RS485 - USB) and a software CD. Click the pic below to view the full spec of Eurotherm 3504 temperature controller. 

Water-Cooled Flanges

  • Both top and bottom flanges have water-cooling jacket (See left picture), which cools and preserves the O-ring sealings on the flange during high-temperature operation
  • Please click the picture below to order water chiller at extra cost

Vacuum Level

  • 0.05  torr (depends on the vacuum pump)
  • Click Picture below to order vacuum pump separately

Power Cable & Plug

  • 10 feet length 10-3 AWG heavy duty UL approved power cable is included. Extra length cable can be ordered by click picture below-left
  • The plug is not included. Browse our catalog for compatible plugs or obtain one from a local hardware store. 


   1040 L × 510 W × 1900 H   ( mm )

Net Weight

  • About 85 kg (excluding mobile cart)

Shipping weight

  • 500lbs  


  • One-year limited warranty (Consumable parts such as heating elements, processing tubes
    and o-rings are not covered by the warranty, please order the replacement at related products below.)

Laptop, software & WiFi Control (Optional)

  • Brand new laptop with Microsoft Window 10 and Microsoft Office 2013 (30 days free trial) for immediate use.
  • Labview Based Temperature Control System (EQ-MTS01) enables user to edit temperature profile, manage heat-treatment recipe, record and plot data for MTI furnaces.
  • A wireless remote control provides up to 300 meters operating range.
  • Above features are available upon request at an extra cost (up to $1,000). Please contact us for more information.
  • Note: 
    The software is only compatible with MTI’s Yudian Temperature Controller



  • CE Certified
  • All electric components ( >24V) are UL / MET / CSA certified
  • The furnace is ready to pass NRTL certification (UL61010)  or CSA certification at extra cost.

Application Notes

Click here to learn more about the installation of a gas regulator.

Operation Instructions


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1. Prices listed online are valid for US market and whom pay by credit card only. There will be extra charges for shipping & handling. Price various from country to country.
2. We may add extra charges for paper order and net30 terms due to extra labor cost.
3. The prices listed are subject to change without notice.