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 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

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	450	13,0	25/3	400	150	–
PK 105/12	1280	700 - 1250	105	1450*×1550×1850	500×350×600	660	21,0	40/3	400	150	50
PK 130/12	1280	700 - 1250	130	1450*×1550×2000	500×350×750	750	21,0	40/3	400	200	50
PK 180/12	1280	700 - 1250	180	1500*×1550×2000	550×400×800	830	29,0	50/3	400	200	50
PK 225/12	1280	700 - 1250	225	1550*×1700×1950	600×530×750	920	29,0	50/3	400	250	50
PK 350/12	1280	700 - 1250	350	1650*×1700×2300	700×530×1100	1100	50,0	80/3	400	300	50
PK 540/12	1280	700 - 1250	540	1550*×1900×2650	600×600×1500	1540	50,0	80/3	400	350	50
PK 680/12	1280	700 - 1250	680	2285×2790×2670	900×500×1500	1620	70,0	125/3	400	400	–
PK1000/12	1280	700 - 1250	1000	2300×2850×2900	900×700×1800	1980	70,0	125/3	400	500	–
PK1400/12	1280	700 - 1250	1400	2500×2850×3300	1100×600×2100	2500	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

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
3 m 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

protective atmosphere supply
semi-gastight furnace design without gas supply (This is combined with protective atmosphere supply.)
optimisation of the temperature field to meet the DIN 17052-1 C10-B13 ∆T 20 °C in the internal space (in an empty furnace; measured in the range from 900 °C to 1100 °C a grommet for termocouples is required)
measurement protocol for temperature uniformity (a grommet is needed for the TUS test)
tree-channel digital temperature recorder
measuring loop calibration
EIA-485 or LAN interface
HtMonit EV set (contains software + interface)
grommet for TUS test measuring thermocouples
metal plate for the bottom (only up to temperatures of 1000 °C)
non-controlled overpressure forced cooling (this cannot be combined with semi-gastight version)
controlled overpressure forced cooling (this cannot be combined with semi-gastight version)
set of SiC side covering plates

Custom additional components

custom stand
custom controller
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
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 semi-gastight version