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Horizontal Directed Crystallization (HDC) Tube Furnace, 1100C Max. - OTF-1200X-50-DSL

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OTF-1200X-50-DSL is a horizontal sliding 2" tube furnace with variable speed from 1 mm/sec - 100 mm/sec and programmable repeating time. This furnace is designed for directional growth of longer single wall nano carbon tube (SWCT) by CVD method. It can also be used for horizontally growing low melting point metallic single crystal under vacuum and inert gas as Bagdasarov or HDC method).   The complete system includes 30 segments precision temperature controller, 2"OD x 36"L Quartz tube and vacuum flanges with 1100°C max. working temperature. 


Furnace Structure

  • Double layer steel structure with dual air cooling fans 
  • One precision bear linear sliding system installed under table to drive tube furnace back forward at variable speed
  • 6" color touch screen speed control can program moving direction, moving speed and repeating travel time
  • Vacuum flanges and a digital vacuum gauge are installed  for immediate use.


1.5 kW
Voltage AC 110V Single Phase, 50/60 Hz

Max. Temperature

1100°C (<1 hour) with flowing gas

Continuous Temperature


Heating Zone Length

  • Heating Zone:  8" (200mm), single zone. The picture below shows temp. distribution 
  • Constant Temperature Zone:   2.3" (60mm)  (+/-1°C) @ 1000 °C
  • Temperature Gradient:  Can be created depended on temp. profile and adjust by thermal block 
  • Optioanl:  you may choose dual zone tube furnace at Pic below right at extra cost to creat higher thermal gradient or longer constant temperature zone
  •                        -- two zone furnace    

Speed Control

  • Precision DC motor drives furnace moving
  • 6" color touch screenc ontroller will:
    • setting moving speed from 1 mm/second to 100 mm/second
    • setting travel distance
    • setting travel time to be repeated
  • The lower speed controlled range is available upon request at extra cost.

Processing Tube

  • High purity fused quartz tube
  • Size:  OD: 2" x  ID: 1.8." x Length: 39" (50mm OD x 46mm ID x 1000mm L)
  • Two foam ceramic blocks are included which must be placed inside tube to avoid heat radiation damaging O-rings

Temperature Controller
& Sliding Control

  • 30 programmable segments for precise control of heating rate, cooling rate and dwell time
  • Temperature Accuracy: +/ - 1°C
  • Built-in over temperature alarm and protection allows for operation without attendant
  • Two K type thermal couples are included. One is built in furnace to control furnace temperature, and another is inserted into tube to monitor sample's real temperature profile
  • Optional:  
    • The furnace may be operated by PC by installing a control module. Please order a MTS-02 control module at extra cost.    
    • If you order the PC control module together with the furnace, we will install and test it before shipping. We recommend you to order a computer (laptop) from us to avoid software installation problems. For more information please click here
    • Please order temperature calibrator ( click picture below right) to measure temperature profile and calbrate furnace temperature from time to time to achieve better growth.

 Vacuum Flanges

Vacuum sealed flange with SS needle valves and vacuum gauge are included for immediate use

 Vacuum Level 

Limited by pump (pump is not included, click on pictures below to order)

  • 10E-5 torr can be reached by molecular pump
  • 10E-2 torr by a mechanical pump.

 Sliding Rails / Table

  • Double sliding rail made by Cr plated steel

  • Sliding length: 1200 mm


  • Vertical sliding assembling is available upon request at extra cost


  • 315 x 300 x 380mm (tube furnace alone)
  • 1200 x 400 x 530mm (Furnace + sliding system)
  • 360 x 180 x 300mm (speed control box)

 Net Weight

100 kg

Shipping Package Size

70" x 45" x 45"

Shipping Weight

350 lbs


  • CE Certified
  • All electric components ( >24V) are UL / MET / CSA certified
  • The furnace is ready to pass TUV(UL61010) or CSA certification at extra cost. ( please click marks below to learn details )


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


One year limited manufacturer's warranty with lifetime technical support (Consumable parts such as processing tubes, O-rings, and heating elements are not covered by the warranty, please order replacements at related products below).

Application Notes

Click here to learn the installation of a gas regulator

  • Tube furnaces with quartz tubes are designed for using under vacuum and low pressure < 0.2 bar / 3 psi / 0.02 MPa
  • 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.
  • Vacuum limit definition for all quartz tube furnaces: * Vacuum pressures may only be safely used up to 1000°C
  • Click here to learn How to set up quartz/ ceramic tube and vacuum flange for MTI Tube furnace.
  • After CVD, the graphene must be transferred from the metal catalyst to another substrate for most applications. By using the graphene transfer tape, the residue can be low.
  • For Horizontaldirectional crystalization  (HDC), you may use a gas feedtrough as pic below:

Operation Instructions


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