Position:Home > Products > Tube Furnace > Multi-Zone Tube Furnace > Three zones Tube Furnaces

1100℃ 3Zone Hi-Temperature Hi-Pressure Rocking Tube Furnace



KJ-1200X-HPR-III is a high-pressure rocking tube furnace with three heating zones. The processing tube is made of a Ni-based superalloy. It is designed for heat treatment materials under both high-pressure gas and high temperature up to 1100ºC.

Specific Introduction:
    KJ-1200X-HPR-III is a high-pressure rocking tube furnace with three heating zones. The processing tube is made of a Ni-based superalloy. It is designed for heat treatment materials under both high-pressure gas and high temperature up to 1100ºC. It is designed for melting alloy or compound which is easy to evaporate under atmosphere.
Furnace Structure
  • Split-able tube furnace with three heating zone with the independent temperature controllers
  • Each zone length of 200 mm and 600 mm in total length
  • Ni-Based Super-alloy with Max. working temperature up to 1100oC at high pressure.
  • The furnace can be swung from -30º to + 90º an electric motor at the frequency range of 0.1 - 1 time/min
  • AC 208 - 240V 50/60Hz
  • 4.2 KW (32 A breaker required)

Working Temperature
  • Max. Temperature: 1100 °C  (< 1 hr)
  • Continuous working temperature: 1000°C
  • Max. Heating Rate: 10°C /min
Heating Zones
  • Three heating zones: 150 mm + 150 mm + 150 mm
  • Total heating zone length: 450 mm 
  • Constant temp. zone: 280 mm ±1°C
Temperature Control
  • Three precision digital temperature controllers (FA-YD518P-AG )  are included
  • Proportional–integral–derivative control (PID control) and auto-tune function
  • 30 segments programmed with ramping, cooling and dwelling steps
  • Built-in over-temperature alarm and thermocouple failure alarm
  • +/- 1 ºC temperature control accuracy
  • THE Default RS485 PC port for PC operation and operation software is included.
  • You may upgrade the temperature controller to the Eurotherm 3000  with +/- 0.1 ºC accuracy.
Processing Tube

  • Ni-based superalloy GH747
  • Tube dimension: OD 60 x  ID 52 x  Length 1000 , mm
  • Max. working temperature:   1100ºC
  • 8 pcs fibrous alumina thermal blocks are included ( 4 pcs each side) with SS310 small tube to fix crucible in the center without moving.
Working Gases
  • Inert gas or oxygen
  • No hydrogen or any flammable gas is allowed

Working Pressure
  • 40 bar Max. at 800°C
  • 25 bar Max. at 900°C
  • 12 bar Max. at 1000°C
  •   8 bar Max. at 1100°C
Flange & Fitting
  • There are two fixing methods for tube and flanges
    • High-pressure fixing method
      • There are two CF flanges included, the upstream side with 1/4" NPT venting port
      • 2 pecs of copper O-rings are included. Spare copper O-ring as consumable parts available.
      • One 1/4" metal hose is included for connecting tube and cylinder
    • Constant pressure fixing method
      • A CF to KF flange adaptor is used on left side of the tube, and a cooling ring is installed externally. A CF type flange is used on the right side
      • Remove left side KF flange in order to get the sample out
Gas Filter & Cold Trap
  • A core funnel filter is installed on the gas outlet side of the tube
  • A cold trap is also installed outside of the core funnel filter
Rocking Stage
  • Gear DC motor, 150W  drives the furnace in the center
  • LCD digital display with adjustable speed from 10 - 70 RPM
  • Rocking angle: -30º to + 90º
  • Rocking frequency: 0.1 - 1 time per minute adjustable
  • Rocking Timer: 1-1199 min or continuous running adjustable.
Control Unit
  • The control panel is separated from the furnace for safe operation
  • Temperature, pressure, and gas flow rate are controlled via the touch screen panel
  • Rocking Furnace: 1535mm (L) x 1050mm (W) x 1340mm (H)
  • Control Unit: 700mm (L) x 550mm (W) x 1100mm (H)
Shipping Weight ~200 kg
Warranty One-year limited warranty with lifetime support  (Consumable parts such as processing tubes, and O-rings are not covered by the warranty, please  contact us to order replacements.)
  • CE Certified
  • NRTL(UL61010)  or CSA certification is available at extra cost.
Safety Notes
The pics show the Superalloy tube under overpressure test
  • The Ni-based superalloy is a reliable material that has excellent ductility and tensile properties. Only creep deformation happens under overpressure ( Click Pic left column to see)
  • DO NOT overtighten the flange screws as this may cause permanent damage to the flange or screws. Please refer to the instruction about proper torque for installing CF flange bolts. We recommend you to use a torque wrench to tighten the screws with the flange
  • DO NOT operate the furnace at a temperature/pressure above the safety limit that Kejia’s recommends
  • Extreme caution should be exercised while operating within the vicinity of the high-pressure furnace. The operator should NEVER stand in front of the flanges, gas inlet/outlet, or the pressure relief valve while the tube is pressure loaded! NEVER faces on the gas inlet/outlet and the pressure relief valve to avoid injury from high pressure, hot gas discharge
  • Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure for safe operation. 
tel Email FaceBook YouTuBe

Tel Number