PK hardening chamber furnace up to 1280 °C

A sturdy furnace for hardening and more, even available in a semigastight version

We design our hardening chamber furnaces as very durable facilities for hardening, annealing, or preheating metal charges before forging under an oxidizing atmosphere. The heating elements are covered with SiC plates with strong mechanical durability, which protect them from damage. Heating from three sides, meanwhile, is a guarantee of even heat distribution within the operating area.

At your request, we also manufacture these furnaces in a semi-gastight version with a retort or with a working tub, so that you can also use them for heat treatment of a charge under a partially protective atmosphere. Do not expect, however, for this furnace to be on par with a gastight furnace after these adjustments. This is truly only partial protection of the charge. 

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Benefits

  • Simple to control
  • Robustness
  • Mechanical resistance of the internal insulation
  • Noise-free operation
  • Custom adjustments
  • Semi-gastight version
  • Practical rotary table for manipulating the charge
  • Easy door opening even on the larger models
  • 24-month warranty

Charge treatment technology

  • Preheating shell moulds
  • Preheating castings
  • Preheating moulds
  • Preheating moulds before forging
  • Homogenisation annealing
  • Normalisation annealing
  • Hardening
  • Cementing
PK-180_12-hardening-chamber-furnace.jpg PK 180/12 hardening chamber furnace
PK-180_12-hardening-chamber-furnace.jpg PK 180/12 hardening chamber furnace

Technical parameters

Furnace equipment

Furnace type Tmax°C Recommended operating temperature range in °C Volume in l External dimensions (w × h × d) mm Internal dimensions (w × h × d) mm Weight in kg Input in kW Protection**  Voltage V Max. load capacity of bottom in kg Max. load for folding tables in kg
PK 55/12 1280 700 - 1250 55 1350×1450×1750 400×250×550 520 13,0 25/3 400 150
PK 105/12 1280 700 - 1250 105 1450*×1550×1850 500×350×600 670 21,0 40/3 400 150 50
PK 130/12 1280 700 - 1250 130 1450*×1550×2000 500×350×750 730 21,0 40/3 400 200 50
PK 180/12 1280 700 - 1250 180 1500*×1550×2000 550×400×800 800 29,0 50/3 400 200 50
PK 225/12 1280 700 - 1250 225 1550*×1700×1950 600×530×750 880 29,0 50/3 400 250 50
PK 350/12 1280 700 - 1250 350 1650*×1700×2300 700×530×1100 1080 50,0 80/3 400 300 50
PK 540/12 1280 700 - 1250 540 1550*×1900×2650 600×600×1500 1250 50,0 80/3 400 350 50
PK 680/12 1280 700 - 1250 680 2285×2790×2670 900×500×1500 1500 70,0 125/3 400 400
PK1000/12 1280 700 - 1250 1000 2300×2850×2900 900×700×1800 1700 70,0 125/3 400 500
PK1400/12 1280 700 - 1250 1400 2500×2850×3300 1100×600×2100 1850 95,0 160/3 400 800
*Furnace dimensions without manipulation table.
**Protection can vary depending on accessories chosen (at additional cost).
Subject to technical changes.

Standard equipment

  • HtIndustry/Ht205 controller (30 programmes with 15 steps each)
  • spirals made of resistor wire
  • mineral-fibre blocks, lightweight bricks, SiC plates, and refractory concrete parts
  • ventilation chimney
  • rotary table for charge located on the right for PK 105/12 through PK 540/12 furnaces
  • “S” type thermocouple
  • contactless SSR switching relay for noise-free operation
  • limit switch on door
  • Ht700 limit unit
  • 3m power cable, CEE terminal for PK 55/12 through PK 225/12
  • electrical power terminals in switchboard (supplied without power cable) for PK 540/12 through PK 1400/12 furnaces
  • manually controlled door (PK 55/12 through PK 540/12)
  • electro-hydraulic door opening towards the top (PK 680/12 through PK 1400/12)
  • stand
  • PK 55 – 540 come without a switchboard, with the electrical installation located in the rear portion of the furnace
  • PK 680 – PK 1400 have electrical installation elements located in the switchboard on the right side.

Optional accessories available at additional cost

  • ventilation chimney filler
  • protective atmosphere intake
  • semigastight furnace variant
  • metal plate at bottom (only up to temperature of 1000 °C)
  • set of SiC covering side plates
  • optimisation of the temperature field to meet the DIN 17052 C10-B13 ∆T 20 °C in the internal space (in an empty furnace; measured in the range from 900 °C to 1100 °C)
  • graphic temperature recorder
  • measuring loop calibration
  • EIA485 interface
  • HtMonit set (software + interface)
  • large hardening table for PK 55/12 with a combination of hardening tubs and a fan (see SKV datasheet) 
  • hardening container
  • custom controller
  • custom stand
  • electro-hydraulic door opening towards the top (for the PK 55/12 through PK 540/12 models)
  • foot pedal (replaces hand-lever vent for furnaces with electro-hydraulic door opening)
  • pneumatic door opening with foot control using a pedal (standard method is over a 2m cable)
  • pneumatic door opening with manual control using a lever
  • non-controlled overpressure forced cooling (this cannot be combined with semigastight variant)
  • controlled overpressure forced cooling (this cannot be combined with semigastight variant)
  • operating tub for hardening in a protective atmosphere (set of side covering SiC plates needed; refractory steel up to 950 °C; Inconel up to 1100 °C); option to supply with an intake for protective atmosphere into the tub; the furnace itself is, however, supplied without a protective atmosphere intake and without the option for semigastight variant
 
Note: When combining accessories (at additional cost), consult with our technical office.
Over 13,000 furnaces manufactured
Our own team of maintenance technicians
25-member design team
6 custom projects per month
Testing of your specific charges
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