PKRC gastight chamber furnace with retort up to 950 / 1100 °C

The better PKR. With internal atmosphere circulation for precise temperature distribution

For this furnace, the same applies as for PKR—a precisely defined protective atmosphere protecting the surface of the charge from unwanted changes, relatively low gas consumption, a variant with argon, nitrogen, or forming gas, and so on. However, the PKRC furnaces also have even better temperature distribution than PKR furnaces thanks to internal atmosphere circulation.

For the PKRC furnaces, you can also pay extra for a retort made from of type Inconel material that can handle a temperature 150 °C higher than a stainless steel retort can. We can also adapt PKRC furnaces to nitriding furnaces at your request.

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  • Installation of facilities in the Czech Republic for free
  • Custom adjustments
  • Noise-free operation
  • 24-month warranty
  • Immediate technical support
  • Even temperature distribution
  • Mechanical durability
  • Chemical durability
  • Industrial robustness

Charge treatment technology

(PS = partially suitable)

  • Normalisation annealing
  • High-temperature tempering
  • Curing
  • Tempering of tool steels with protective atmosphere
  • Nitriding
  • Carbonitriding
  • Sintering
  • Pyrolysis
  • Heat treatment of metal materials
  • Material testing (PS)
  • Annealing, reducing internal stress
PKRC-55_95-gastight-chamber-furnace-with-retort-and-circulation.jpg PKRC 55/95 gastight chamber furnace with retort and circulation
PKRC-55_95-gastight-chamber-furnace-with-retort-and-circulation.jpg PKRC 55/95 gastight chamber furnace with retort and circulation

Technical parameters

Furnace equipment

Furnace type Tmax°C Tmax for long-term operation °C Volume in l External dimensions (w × h × d) mm Internal dimensions of retort (ød  × w × h) mm Input in kW Weight in kg Protection*  Voltage V Max. load capacity of bottom in kg
PKRC 55/95 950** 850*** 24 1400×1830×1450 267×410×198 13 600 25/3 400 150
PKRC 130/95 950** 850*** 69 1635×1930×1670 372×635×303 21 980 40/3 400 200
PKRC 180/95 950** 850*** 83 1700×1960×1670 412×635×338 29 1100 50/3 400 200
PKRC 350/95 950** 850*** 225 1915×2080×2005 544×895×447 50 1380 80/3 400 300
*Protection may vary according to the optional accessories selected.
**In case of using retort made of type Inconel material and cast-iron propeller up to 1100 °C.
***In case of using retort made of type Inconel material and cast-iron propeller up to 1000 °C.

Subject to technical changes.
Note: After our experience with previous applications, we know that the service life for a standard retort (an internal gastight vessel) used for a maximum temperature of 950 °C is low (it depends on its endurance period for the temperature, but is roughly on the order of hundreds of hours). If you wish to operate a plant regularly at a temperature of around 950 °C, then we recommend equipping it with a retort made from of type Inconel material.

Standard equipment

  • Ht205 controller (30 programs of 15 steps each)
  • heating coils wound on ceramic tubes outside the working area of the furnace
  • door sealing
  • manually controlled ventilation and suction flaps for cooling outside of the retort
  • manual door opening to the side
  • limit unit
  • automatically controlled protective atmosphere inlet for one gas type (without vacuum pump)
  • vacuum pressure gauge for vacuum control in the retort
  • vacuum pump connection inlet
  • G½” adapter for connecting cooling collar rubber hose
  • thermistor for temperature control flange, signalling the presence of coolant in the retort collar
  • overpressure valve at the retort gas input point with pressure 4-6 mbar
  • ammeters to check the status of the heating elements (number depends on the number of stages involved in heating)
  • type ‘K’ thermocouple
  • contactless solid state relays for silent operation
  • limit end-switch for safe opening of the furnace

Optional accessories available at additional cost

  • spare retort of refractory steel
  • vacuum pump for extraction of the atmosphere + necessary controlled forced cooling
  • charge thermocouple and Ht40 temperature display unit
  • controlled forced cooling (according to input cooling curve)
  • three-channel digital temperature recorder 
  • optimization of the temperature field to meet DIN 17052-1 ΔT20 °C norms in the inner useable   furnace (in empty furnace at Tmax)
  • calibration of the measurement loop
  • EIA-485 or LAN interface
  • HtMonit EV set (contains software + interface)

Atypical accessories:

  • retort made of Inconel material and cst propeller of fan
  • other gas services based on customer specifications (more gas, more flow, etc ...)
  • atypical stand 

Note: When combining accessories (at additional cost), consult with our technical office.
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