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Vacuum Rapid Heated Pressing Furnace up to 1600C & 50 Mpa with 0.5" Graphite Die - OTF-1700X-RHP4

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Item Number: OTF1700X4RHP
Transported by LTL Freight (Truck)

OTF-1700X-RHP4 is a Vacuum Rapid Heated Pressing Furnace (VRHP or RHP) designed for making dense pallets under vacuum or the protective gas environment. A 15 kW temperature controllable induction heater is integrated into the system, which provides sufficient power for rapidly heating the graphite pressing die up to 1700ºC. The Induction coil is built inside of stainless steel vacuum chamber. An electric hydraulic press is inserted from the bottom of the chamber, providing up to 5 tons pressing force.

SPECIFICATIONS  (We reserve the right to modify the specifications at any time before order confirmation)

Max. Pressure

  • 5 metric tons (10 MPa on pressure gauge)
  • 20T version is available upon request at the extra cost

Hydraulic Electrical Presser

  • Piston diameter: 60 mm
  • Vertical move distance: 35 mm
  • Automatic pressure controller
  • Please click on the picture for details
  • Pressure accuracy: +/- 0.1 MPa

Induction Heater

  • Working voltage: 208 - 240 VAC, 50/60 Hz, three-phase (380V three-phase available upon request)
  • Working current: 40 A (with a 60 A breaker).
  • Maximum input power: 15 kW
  • Output frequency: 30 ~ 80 kHz
  • Duty cycle: 80%
  • Max. Working Temperature :  1600ºC max duration time: < 30 min
  • Ultimate Temperature: 1700 ℃ <1 min (This might cause damage of thermocouple)
  • Air cooling: fan
  • Protection: water pressure monitoring, high-temperature protection, and overpower protection

Temp. Controller 

  • Working voltage: 208 ~ 240 VAC, single phase
  • Precision digital temperature controller with automatic PID tuning.
  • Temperature profile that contains a maximum of 30 programmable segments to control heating, dwelling, and cooling
  • Overheating and thermocouple failure protection
  • Temperature accuracy: ± 3ºC
  • B-type thermocouple
  • Continuous working temperature range: 1000 ~1600ºC
  • lower temperature range (300 - 600ºC) is available upon request
  • Maximum heating rate in a vacuum (only for 0.5" inner diameter graphite pressing die; without any thermal block): 
    • 4ºC/s (4 mins 50 seconds from room temperature to 1200ºC)  
    • 2ºC/s (5min 40 seconds from 1200 to 1300ºC)
    • 1.5ºC/s (6min 46 seconds from 1300 to 1400ºC)
    • 1.2ºC/s (8mins 10 seconds from 1400 to 1500 ºC)
    • 1ºC/s (9mins 50 seconds from 1500 to 1600ºC)
  • The experimental cooling rate in vacuum:
    • 3.5ºC/s (~ 2 mins 20 seconds from 1600 to 1200ºC)
    • 1.1ºC/s (~ 8 mins 10 seconds from 1200 to 800ºC)
    • 0.4ºC/s (21 mins 25 seconds from 800 to 500ºC)
    • 0.16ºC/s (~ 37 mins 15 seconds from 500 to 350ºC)
    • 0.06ºC/s (~ 104 mins 20 seconds from 350 to 150ºC)
    Processing chamber
    Sealing Flange

  • Stainless steel vacuum-sealed chamber: 260 × 230 × 320 mm (OD × ID × L)
  • Flanges on both ends of the chamber. Flanges have a tunnel for cooling water
  • Equipped with a KF-25D port, pressure gauge, 1/4" gas inlet port with the stainless steel needle valve
  • The upper flange can be lifted by raising the lead screw which provides easy access to the graphite die
  • Requires at least 55 liters per minute water flow. Please click on Pic. 1 below to order at an extra cost
  • Vacuum level: up to 10-5 Torr by our turbopump station (EQ-PAC-LD) turbo pumping system pump) or 7.5 mTorr by a mechanical pump. 10-7 torr turbopump system is available upon request
  • Vacuum pumped is not included.  Please click on the pictures below to view our vacuum pumps at extra cost.
  • The turbopump may be replaced by Gas purification system (O2 & H2O< 1 ppm) (Pic. 5)
    Pic. 1     Pic. 2     Pic. 3   Pic. 4      Pic. 5

    High-Temperature Graphite
    Pressing Die Set 

  • Two built-in graphite supporting rods with Max pressure 50 Mpa
  • One set of 0.5" (inner diameter) graphite die is included for immediate use
  • Made of high purity graphite by HIP processing, Max. Load from the hydraulic press is dependent on die's ID
    • 0.5"ID: Max. 0.63 T (sample pressure 50 Mpa)
    • 1.0 ID: Max. 2.53T (sample pressure 50 Mpa, which is optional)
  • The graphite pressing die is fragile and consumable. Please click on the picture below to order extra sets. We also provide customized die sets upon customer request at an extra cost
  • Mica spacers are included to adjust the height of die sets and insulate heat. Please click on the picture below right to order spares
  • Note: The maximum pressure range of graphite dies will vary depending on the inner diameter of the die.
  • Please contact MTI if SiC die is required up to 100 MPa. 
  • 800 x 800 x 1300 mm (L x W x H)

    Net Weight

  • 350 kg

    Shipping Weight & Dimensions

  • 1030 lbs; 47" x 39" x 75"

    Application Notes

  • Lifetime support
  • One year limited standard warranty (extend the warranty to 5 years at an extra cost)
  • Graphite rods are not covered by warranty
  • CE certified
  • NRTL certification (UL 1450) is available upon request at an extra cost
    Operation  Video

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1. Prices listed online are valid for the US market and who pay by credit card only. There will be extra charges for shipping & handling. Prices vary from country to country.
2. We may add extra charges for paper orders and NET 30 terms due to extra labor costs.
3. The prices listed are subject to change without notice.