PZ gastight bell furnace with internal atmosphere circulation up to 650 / 850 °C

Bottom-loading furnace for processing charges under a protective atmosphere

The gas-tight bell furnace PZ is used primarily for heat treatment of charges in a defined protective atmosphere (argon, nitrogen, forming gas, etc.), which protects the surface of the charge from unwanted changes. The furnace is designed as a bell furnace with a bottom loading with a protective atmosphere supply inside the retort. This solution allows for the insertion and manipulation of a large and heavy charge at floor level. The furnace is equipped with forced air circulation, which allows for faster heating of the charge and better distribution of the temperature field.

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Benefits

Robust construction with long service life
Bottom loading, no need for structural modifications to the hall floor
Forced circulation of the protective atmosphere, uniform temperature distribution in the internal working space of the furnace
The retort design ensures gas tightness of the furnace
Low consumption of protective gas
Defined working environment in the retort
Space for placing thermocouples inside the retort
Mechanical durability
Chemical durability
24-month warranty
Immediate technical support

Charge treatment technology

Tempering
High-temperature tempering
Tempering of tool steels with a protective atmosphere
Tempering after vacuum hardening
Normalizing annealing
Soft annealing
Annealing to remove internal stress
Recrystallization annealing
Artificial aging
Sintering

PZ gastight bell furnace with internal atmosphere circulation

Furnace type	Tmax°C	Recommended operating temperature range°C	Internal usable dimensions (øD×h)mm	Internal dimensions (øD×h)mm	External dimensions (w×h×d)mm	InputkW	Weightkg	Protection*A	VoltageV
PZ 60/65	650	300-600	400×400	500×500	1900×3200×1900	35	1500	80/3	400
PZ 300/65	650	300-600	560×750	850×850	2200×4300×2300	45	2900	125/3	400
PZ 600/65	650	300-600	700×650	950×750	1900×4000×2300	56	2950	160/3	400
PZ 950/65	650	300-600	1100×900	1200×1000	2000×4400×2900	70	3700	250/3	400
PZ 60/85	850	300-800	400×400	500×500	1900×3200×1900	50	1500	125/3	400
PZ 300/85	850	300-800	560×750	850×850	2200×4300×2300	60	2900	160/3	400
PZ 600/85	850	300-800	700×650	950×750	1900×4000×2300	70	2950	250/3	400
PZ 950/85	850	300-800	1100×900	1200×1000	2000×4400×2900	90	3700	250/3	400

*Protection may vary according to the optional accessories selected.
Subject to technical changes.

Standard equipment

Retort
Electrically lifted chamber
Ht205 controller (30 programmes with 15 steps each)
Limit unit
Resistance heating
Circulation fan (water-cooled)
Ammeters for checking the state of the heating elements (numbers based on number of phases connected to the heating)
Automatic intake of protective atmosphere for one type of gas
“K” type thermocouple

Optional accessories available at additional cost

Ht200 controller (30 programmes with 25 steps each, USB interface)
Controlled forced overpressure cooling (indirect)
Optimisation of the temperature field to meet the DIN 17052-1 ΔT 15 °C standard in the internal usable space (in an empty furnace at Tmax), including a report from measuring (calibration of the measurement loop, grommet for TUS test is needed)
Measuring loop calibration (thermocouple + controller)
Grommet for TUS test measuring thermocouples
Charge thermocouple + Ht40 display
EIA-485 interface or LAN interface
HtMonit EV set (includes interface + software)
Digital three-channel temperature recorder

Atypical accessories:

Modification of the retort base frame
Other gas management according to customer specifications (more gases, more flow rates, etc.)

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

25-member design team

6 custom projects per month

Testing of your specific charges

PZ gastight bell furnace with internal atmosphere circulation up to 650 / 850 °C

Bottom-loading furnace for processing charges under a protective atmosphere

I’m interested in this furnace

Benefits

Charge treatment technology

Technical parameters

Furnace equipment

Standard equipment

Optional accessories available at additional cost

Atypical accessories:

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