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Chamber Dryer Electrically Heated or Gas-Fired 

 
  KTR 1500 with charging cart KTR 21640/S with chamber lightning and drive-in tracks with insulated plugs which provide for an optimal temperature uniformity

Standard models

Motor-driven rotary rack with baskets for moving the charge during heat treatment

KTR 3100/S for curing of composites in vacuum bags incl. pump and necessary connections in the oven chamber

Air circulation in the chamber dryer

The chamber dryers of the KTR range can be used for complex drying processes and heat treatment of charges of normal weight and packing density to an application temperature of 260 °C. The high-performance air circulation enables optimum temperature uniformity throughout the usable space. A wide range of accessories allow the furnace to be modified to meet specific process requirements. The design for the heat treatment of flammable materials in conformance with EN 1539 is available for all sizes.

  • Tmax 260  °C
  • Electrically heated (via a heating register with integrated chrome steel heating elements) or gas-fired (direct gas heating including injection of the hot air into the intake duct)
  • Temperature uniformity up to ∆T 6 K according to DIN 17052-1 (for design wihout track cutouts)
  • High-quality mineral wool insulation provides for outer temperatures of < 20  °C above room temperature
  • High air exchange for fast drying processes
  • Double-wing door for furnaces KTR 3100 and larger
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the dryer and load
  • Incl. floor insulation

Additional equipment

  • Entry ramp for pallet trucks or track cutouts for charging cart
  • Optimal air circulation for individual charges by means of adjustable air outlets
  • Fan system for faster cooling with manual or motor-driven control
  • Programmed opening and closing of exhaust air flaps
  • Observation window and furnace chamber lighting
  • Safety technology according to EN 1539 for charges containing solvents
  • Charging cart with or without rack system
  • Design for clean room heat treatment processes
  • Process control and documentation with Controltherm MV software package
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeatingElectrical
 °Cwdhin lWDHpower in kW1connection*
KTR 1500 260 1000 1000 1500 1500 1930 1430 2315 21.0 3-phase
KTR 3100 260 1250 1250 2000 3100 2160 1680 2880 30.0 3-phase
KTR 4500 260 1500 1500 2000 4500 2410 1930 2880 48.0 3-phase
KTR 6125 260 1750 1750 2000 6125 2660 2180 3000 50.0 3-phase
KTR 8000 260 2000 2000 2000 8000 2910 2430 3000 59.0 3-phase
1Depending on furnace design connected load might be higher

Air Circulation Chamber Furnaces < 675 Liters Electrically Heated

 
  N 60/45HAS with additional door for charging of long parts which ride out of the open door N 250/65HA with gas supply system

N 15/65HA as table-top model

N 250/65HA with quenching bath

N 120/85HAS with charging basket

Air circulation furnace N 500/HAS with four compartments, each with roller conveyor and individual door

The very good temperature uniformity of these chamber furnaces with air circulation provides for ideal process conditiones for annealing, curing, solution annealing, artificial ageing, preheating, or soft annealing and brazing. The furnaces are equipped with a suitable annealing box for soft annealing of copper or tempering of titanium, and also for annealing of steel under non-flammable protective or reaction gases. The modular furnace design allows for adaptation to specific process requirements with appropriate accessories.

  • Tmax 450  °C, 650  °C, or 850  °C
  • Heating from bottom, sides and top
  • Stainless steel air-baffle box in the furnace for optimum air circulation
  • Swing door hinged on the right side
  • Base frame included in the delivery, N 15/65 HA designed as table-top model
  • Horizontal air circulation
  • Temperature uniformity up to ∆T 8 K according to DIN 17052-1 (model N 15/65 HA up to ∆T 14 K)
  • Optimum air distribution enabled by high flow speeds
  • One removable tray and rails for two additional trays included in the scope of delivery (N 15/65 HA without removable tray)

Additional equipment (not for model N 15/65HA)

  • Optimization of the temperature uniformity up to +/- 3 °C according to DIN 17052-1
  • Fan cooling to accelerate the cooling process
  • Motorized exhaust air flaps
  • Manual lift door
  • Pneumatic lift door
  • Adjustable air circulation for sensitive components
  • Additional removable trays
  • Roller conveyor in furnace chamber for heavy charges
  • Annealing boxes
  • Feed and charging aids
  • Designed for Tmax 950  °C
  • Process control and documentation with Controltherm MV software package
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeating ElectricalWeight
 °Cwdhin lWDHpower in kW3connectionin kg
N 30/45 HA 450 290 420 260 30 607 + 255 1175 1315 3.6 single-phase 195
N 60/45 HA 450 350 500 350 60 667 + 255 1250 1400 6.6 3-phase 240
N 120/45 HA 450 450 600 450 120 767 + 255 1350 1500 9.6 3-phase 310
N 250/45 HA 450 600 750 600 250 1002 + 255 1636 1860 19.0 3-phase 610
N 500/45 HA 450 750 1000 750 500 1152 + 255 1886 2010 28.0 3-phase 1030
N 675/45 HA 450 750 1200 750 675 1152 + 255 2100 2010 28.0 3-phase 1350
                       
N 15/65 HA1 650 295 340 170 15 470 845 460 2.7 single-phase 55
N 30/65 HA 650 290 420 260 30 607 + 255 1175 1315 6.0 3-phase2 195
N 60/65 HA 650 350 500 350 60 667 + 255 1250 1400 9.6 3-phase 240
N 120/65 HA 650 450 600 450 120 767 + 255 1350 1500 13.6 3-phase 310
N 250/65 HA 650 600 750 600 250 1002 + 255 1636 1860 21.0 3-phase 610
N 500/65 HA 650 750 1000 750 500 1152 + 255 1886 2010 31.0 3-phase 1030
N 675/65 HA 650 750 1200 750 675 1152 + 255 2100 2010 31.0 3-phase 1350
                       
N 30/85 HA 850 290 420 260 30 607 + 255 1175 1315 6.0 3-phase2 195
N 60/85 HA 850 350 500 350 60 667 + 255 1250 1400 9.6 3-phase 240
N 120/85 HA 850 450 600 450 120 767 + 255 1350 1500 13.6 3-phase 310
N 250/85 HA 850 600 750 600 250 1002 + 255 1636 1860 21.0 3-phase 610
N 500/85 HA 850 750 1000 750 500 1152 + 255 1886 2010 31.0 3-phase 1030
N 675/85 HA 850 750 1200 750 675 1152 + 255 2100 2010 31.0 3-phase 1350
1Table-top model
2Heating only beetween two phases
3Depending on furnace design connected load might be higher
 

Air Circulation Chamber Furnaces > 560 Liters Electrically Heated or Gas-Fired

N 3920/26HAS N 1500/85HA with electric charging system for heavy loads

N 12000/25AS

N 24500/20HAS

Enclosed heater coils on electrically heated models 

Gas burner positioned along the furnace side

N 2520/60HA with roller conveyor inside and in front of the furnace

N 1500/85HA with lift door and work piece holders in the furnace 

Pull-out drawers for heavy loads

Track cutouts for pallet truck or charging cart

N 4010/45HA with track cutouts, chamber lighting and observation window

These air circulation chamber furnaces are available for maximum operating temperatures of 260 °C, 450 °C, 600 °C or 850 °C and are perfectly suited for demanding processes. Due to their robust and solid design even heavy loads can be heat treated. These furnaces are suited for use with baskets, pallets, and charging trolley. The charging can be carried out with fork lift, pallet truck, or charging trolley. The basic furnace is standing on the shop floor without floor insulation. Charging can be simplified by roller conveyors, if necessary also motorized. All furnaces are available with electric or gas heating.

Standard version for models up to 600 °C

  • Tmax 260  °C, 450  °C or 600  °C
  • Electrically heated or gas-fired
  • Electric heating by means of heater coils
  • Direct gas heating or upon request with indirect gas heating with radiation tube, e.g. for heat treatment of aluminum
  • Optimal air circulation for your charge by means of adjustable air outlets
  • Horizontal air flow (type ../HA)
  • High air exchange for perfect heat transfer
  • Ground level charging without floor insulation for 260  °C models
  • Temperature uniformity up to ∆T 10 K according to DIN 17052-1
  • Furnace chamber lined with alloy 1.4301 (DIN)
  • High quality mineral wool insulation provides for low outer temperatures
  • Inside unlocking device for furnaces with walk-in chambers
  • Furnace sizes suitable for common charging systems, such as pallets, baskets, etc.
  • Double-wing door for furnaces with an internal width of more than 1500 mm (260 °C and 450 °C models). Furnaces for higher temperatures and with smaller sizes are equipped with a single-wing door.
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load

Additional equippment for models up to 600 °C

  • Optional floor insulation provides for improved temperature uniformity for 260  °C models
  • Entry ramps or track cutouts for floor-level charging cart of models with bottom insulation (not for 600 °C models)
  • Furnace positioned on base frame provides for ergonomic charging height
  • Electro-hydraulic lift door
  • Fan system for faster cooling with manual or motor-driven control
  • Motor-driven control of air inlet and exhaust air flaps for better ventilation of the furnace chamber
  • Observation window and/or furnace chamber lighting (not for 600 °C models)
  • Optimization of the temperature uniformity up to +/- 3 °C according to DIN 17052-1
  • Safety technology according to EN 1539 for charges containing solvents (not for 600 °C models)
  • Charging systems or roller conveyors, also electrically driven provide for easy charging
  • Catalytic or thermal exhaust gas cleaning systems
  • Process control and documentation with Controltherm MV software package

Standard version for models 850 °C

  • Tmax 850  °C
  • Electrically heated or gas-fired
  • Electric heating with heating elements on supports tubes
  • Direct gas heating into the outlet of the air circulation fan
  • Optimal air circulation for your charge by means of adjustable air outlets
  • Horizontal air-flow (type ../HA)
  • High air exchange provides for perfect heat transfer
  • Base frame with 900 mm charging height
  • Temperature uniformity up to ∆T 10 K according to DIN 17052-1
  • Air baffles made of 1.4828 (DIN)
  • Multi-layer insulation with fiber plates (not classified according to EU directive 67/548) provides for low outer temperatures
  • Furnaces sizes perfectly suited to accommodate common charging systems, e.g. like pallets or pallet boxes
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load

Additional equipment for models 850 °C

  • Electro-hydraulic lift door
  • Fan system for faster cooling with manual or motor-driven control
  • Motor-driven air inlet and control of exhaust air flaps for better ventilation of the furnace chamber
  • Optimization of the temperature uniformity up to +/- 3 °C according to DIN 17052-1
  • Base frame for customized charging height
  • Charging systems or roller conveyors, also electrically driven provide for easy charging
  • Designed for Tmax 950  °C
  • Process control and documentation with Controltherm MV software package
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmCirculationHeating Electrical
 °Cwdhin lWDHrate m3/hpower in kW2connection
N 560/26HA 260 750 1000 750 560 1450 1865 2220 900 13.0 3-phase
N 1000/26HA 260 1000 1000 1000 1000 1930 1900 1600 3600 18.0 3-phase
N 1500/26HA 260 1500 1000 1000 1500 2380 1900 1600 3600 22.0 3-phase
N 1500/26HA1 260 1000 1500 1000 1500 1880 2400 1600 3600 22.0 3-phase
N 2000/26HA 260 1500 1100 1200 2000 2380 2000 1800 6400 22.0 3-phase
N 2000/26HA1 260 1100 1500 1200 2000 1980 2400 1800 6400 22.0 3-phase
N 2010/26HA 260 1000 1000 2000 2000 1880 1900 2720 7200 30.0 3-phase
N 2880/26HA 260 1200 1200 2000 2880 2080 2100 2720 9000 54.0 3-phase
N 4000/26HA 260 1500 2200 1200 4000 2380 3110 1800 9000 47.0 3-phase
N 4000/26HA1 260 2200 1500 1200 4000 3080 2410 1800 9000 47.0 3-phase
N 4010/26HA 260 1000 2000 2000 4000 1880 2900 2720 9000 54.0 3-phase
N 4500/26HA 260 1500 1500 2000 4500 2380 2400 2720 12800 54.0 3-phase
N 5600/26HA 260 1500 2500 1500 5600 2110 3180 2340 9000 69.0 3-phase
N 6750/26HA 260 1500 3000 1500 6750 2110 3680 2340 19200 98.0 3-phase
N 7200/26HA 260 2000 1500 2400 7200 2610 2410 3000 18000 93.0 3-phase
N 10000/26HA 260 2000 2500 2000 10000 2610 3180 2840 25600 106.0 3-phase
                       
N 560/45HA(E1) 450 750 1000 750 560 1450 1865 2220 900 13,01/ 19,0 3-phase
N 1000/45HA(E1) 450 1000 1000 1000 1000 1930 1900 1600 3600 18,01/ 40,0 3-phase
N 1500/45HA(E1) 450 1500 1000 1000 2380 1900 1600 1320 3600 22,01/ 40,0 3-phase
N 1500/45HA1(E1) 450 1000 1500 1000 1500 1880 2400 1600 3600 22,01/ 40,0 3-phase
N 2000/45HA(E1) 450 1500 1100 1200 2000 2380 2000 1800 6400 22,01/ 46,0 3-phase
N 2000/45HA1(E1) 450 1100 1500 1200 2000 1980 2400 1800 6400 22,01/ 46,0 3-phase
N 2010/45HA(E1) 450 1000 1000 2000 2000 1880 1900 2720 7200 30,01/ 54,0 3-phase
N 2880/45HA(E1) 450 1200 1200 2000 2880 2080 2100 2720 9000 54,01/ 66,0 3-phase
N 4000/45HA(E1) 450 1500 2200 1200 4000 2380 3110 1800 9000 47,01/ 65,0 3-phase
N 4000/45HA1(E1) 450 2200 1500 1200 4000 3080 2410 1800 9000 47,01/ 65,0 3-phase
N 4010/45HA(E1) 450 1000 2000 2000 4000 1880 2900 2720 9000 54,01/ 66,0 3-phase
N 4500/45HA(E1) 450 1500 1500 2000 4500 2380 2400 2720 12800 54,01/ 66,0 3-phase
N 5600/45HA(E1) 450 1500 2500 1500 5600 2110 3180 2340 9000 69,01/ 93,0 3-phase
N 6750/45HA(E1) 450 1500 3000 1500 6750 2110 3680 2340 19200 98,01/116,0 3-phase
N 7200/45HA(E1) 450 2000 1500 2400 7200 2610 2410 3000 18000 93,01/117,0 3-phase
N 10000/45HA(E1) 450 2000 2500 2000 10000 2610 3180 2840 25600 106,01/130,0 3-phase
                       
N 1000/60HA 600 1000 1000 1000 1000 1930 1900 1600 3600 40.0 3-phase
N 1500/60HA 600 1500 1000 1000 1500 2380 1900 1600 3600 40.0 3-phase
N 1500/60HA1 600 1000 1500 1000 1500 1930 2400 1600 3600 40.0 3-phase
N 2000/60HA 600 1500 1100 1200 2000 2380 2000 1800 6400 46.0 3-phase
N 2000/60HA1 600 1100 1500 1200 2000 1980 2400 1800 6400 46.0 3-phase
N 4000/60HA 600 1500 2200 1200 4000 2380 3110 1800 9000 65.0 3-phase
N 4000/60HA1 600 2200 1500 1200 4000 3080 2410 1800 9000 65.0 3-phase
                       
N 1000/85HA 850 1000 1000 1000 1000 2100 2000 1900 3400 46.0 3-phase
N 1500/85HA 850 1500 1000 1000 1500 2600 2000 1900 6400 46.0 3-phase
N 1500/85HA1 850 1000 1500 1000 1500 2100 2600 1900 6400 46.0 3-phase
N 2000/85HA 850 1500 1100 1200 2000 2600 2100 2100 9000 64.0 3-phase
N 2000/85HA1 850 1100 1500 1200 2000 2200 2800 2100 9000 64.0 3-phase
N 4000/85HA 850 1500 2200 1200 4000 2600 3400 2100 12600 97.0 3-phase
1Reduced connected power for plastics applications
2Depending on furnace design connected load might be higher
 

Air Circulation Bogie Hearth Furnaces Electrically Heated or Gas-Fired

 
  Air circulation bogie hearth furnace W 5290/85 AS with annealing box for heat treatment of coils under protective gas W 4000/60AS with charging basket made of 1.4828

W 10430/85AS

Cooling fan for accelerated cooling

Charge support in an air circulation bogie hearth furnace for 850 °C

Air circulation bogie hearth furnace for heat-treating coils

W 13920/60AS4 with floor grid for heavy loads

The air circulation bogie hearth furnaces W 1000/60A - W 8300/85A are used when heavy charges weighing up to more than 25 t have to be heat-treated. They are ideal for processes such as solution annealing, artificial ageing, annealing or soft annealing, for which a high degree of temperature uniformity is crucial. The high-performance air circulation assures that the temperature uniformity achieved throughout the work space is outstanding. A broad selection of additional equipment enables these furnaces to be optimally adapted to suit specific processes.

  • Tmax 600  °C or 850  °C
  • Dual shell housing with rear ventilation provides for low shell temperatures for the 850  °C models
  • Swing door hinged on the right side
  • Heating from chrome steel heating elements for the 600  °C models
  • Heating from three sides (both side walls and the trolley) for the 850  °C models
  • High-performance air circulation fan with vertical circulation
  • Temperature uniformity up to ∆T 10 K according to DIN 17052-1
  • Bottom heating protected by SiC tiles on the bogie providing level stacking surface for the 850  °C models
  • Furnace chamber fitted with inner sheets made of stainless steel 1.4301 for 600  °C models and of 1.4828 for 850  °C models
  • Insulation structured with high-quality mineral wool for 600  °C models
  • Insulation made of high-quality, non-classified fiber material for 850  °C models
  • Bogies with flanged wheels running on rails for easy and precise movement of heavy loads
  • Electric chain-driven bogie in combination with rail operation for smooth movement of heavy loads from model W 4800
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load

Additional equipment

  • Direct gas heating or upon request with indirect gas heating with radiation tube
  • Electric chain-driven bogie in combination with rail operation for smooth movement of heavy loads up to Model W 4000
  • Optimization of the temperature uniformity up +/- 3 °C according to DIN 17052-1
  • Bogie running on steel wheels with gear rack drive, no rails in front of the furnace necessary
  • Different possibilities for an extension to a bogie hearth furnace system: 
    • Additional bogies
    • Bogie transfer system with parking rails to exchange bogies running on rails or to connect multiples furnaces
    • Motor-driven bogies and cross-traversal system
    • Fully automatic control of the bogie exchange
  • Electro-hydraulic lift door
  • Motor-driven exhaust air flaps, adjustable via the program
  • Uncontrolled or controlled cooling system with frequency-controlled cooling fan and motor-driven exhaust air flap
  • Multi-zone control adapted to the particular furnace model provides for optimum temperature uniformity in the 850  °C models
  • Commissioning of the furnace with test firing and temperature uniformity measurement (also with load) for the purpose of process optimization
  • Designed for Tmax 950  °C, fan blade driven indirectly via a belt to protect the air recirculation motor against over-heating
  • Process documentation and control with Controltherm MV software package, NTLog and NTGraph for the basic furnace or Nabertherm Control Center (NCC) for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeating powerElectrical
 °Cwdhin lWDHin kW1connection
W 1000/.. A   800 1600 800 1000 1800 2390 2305 50.0 3-phase
W 1600/.. A   1000 1600 1000 1600 2000 2390 2535 50.0 3-phase
W 2200/.. A   1000 2250 1000 2200 2000 3040 2535 95.0 3-phase
W 3300/.. A 600 1200 2250 1200 3300 2200 3040 2745 95.0 3-phase
W 4000/.. A or 1500 2250 1200 4000 2500 3040 2780 120.0 3-phase
W 4800/.. A 850 1200 3300 1200 4800 2200 4090 2780 120.0 3-phase
W 6000/.. A   1500 3300 1200 6000 2500 4090 2900 156.0 3-phase
W 6600/.. A   1200 4600 1200 6600 2200 5390 2770 152.0 3-phase
W 7500/.. A   1400 3850 1400 7500 2400 4640 2980 154.0 3-phase
W 8300/.. A   1500 4600 1200 8300 2500 5390 2780 203.0 3-phase
1Depending on furnace design connected load might be higher
 

Air Circulation Pit-Type Furnaces Electrically Heated or Gas-Fired

 
S 1780/60AS S 1000/85A  

2 x S 5600/75 AS in production

Motor-driven air-inlet and axhaust air flaps

S 100/60A - S 1000/85A

Due to their robust design, these pit-type furnaces with air circulation are particularly useful for a professional heat treatment demanding optimum temperature uniformity. Production processes such as tempering, solution annealing, artificial ageing, and soft annealing can be realized with these pit-type furnaces.

  • Tmax 600  °C or 850  °C
  • Useful for heavy charge weights
  • Air circulation fans in the furnace lid, high circulation rate
  • Heating chamber with air baffle cylinder
  • Heating elements on all wall surfaces
  • Distribution of air flow through grid at the furnace floor
  • Pneumatic or hydraulic lifting device
  • Temperature uniformity up to ∆T 6 K according to DIN 17052-1

Additional equipment

  • Integral fan for fast cooling
  • Optimization of the temperature uniformity up to +/- 2 °C according to DIN 17052-1
  • Variable rpm converter control of the air circulation velocity for sensitive parts
  • Multiple zone control or special air circulation system for optimum temperature uniformity tailored to the charge
  • Charge weights up to 7 tons
  • Designed for Tmax 950  °C, fan blade driven indirectly via a belt to protect the air recirculation motor against over-heating
  • Process control and documentation with Controltherm MV software package
ModelTmaxInner dimensions cond. cylinderVolumeMax. charging weightOuter dimensions in mmHeating powerElectricalWeight
 °CØ in mmh in mmin lin kg/m2WDHin kW1connectionin kg
S 100/..A   450 600 100 1500 1100 1200 1600 17.5 3-phase 1000
S 200/..A   600 800 200 1500 1200 1300 2050 28.5 3-phase 1300
S 300/..A 600 600 1000 300 1500 1200 1300 2250 39.5 3-phase 1500
S 500/..A or 800 1000 500 1500 1400 1600 2400 52.5 3-phase 1600
S 600/..A 850 800 1200 600 1500 1400 1600 2600 62.5 3-phase 1800
S 800/..A   1000 1000 800 1500 1600 1800 2400 70.0 3-phase 1900
S 1000/..A   1000 1300 1000 1500 1600 1800 2700 90.0 3-phase 2200
1Depending on furnace design connected load might be higher
 

Pit-Type and Top-Loading Furnaces with or without Air Circulation Electrically Heated or Gas-Fired

S 1512/85HAS S 5120/GS1, furnace chamber divided in two sections, split cover

S 4100/S for sintering of high parts

Furnace chamber S 5120/GS with receptacle for an insulating plate in order to devide the furnace chamber

Our top-loading furnaces are perfectly suited for the heat treatment of longer or heavier components. The furnace is usually charged with a factory crane. Due to their high-performance air recirculation system, the furnaces provide for excellent temperature uniformity up to a maximum temperature of 850 °C. The top-loading furnaces for the temperature range up to 1280 °C provide for very good temperature uniformity due to their five-side heating. Alternatively, these furnaces can also be provided with gas heating. Customized dimensions are designed and produced to accomodate the size and weight of the components to be treated.

  • Tmax 260  °C, 450  °C, 600  °C or 850  °C for furnaces with air recirculation
  • Tmax 900  °C or 1280  °C for furnaces with radiant heating
  • Electrically heated or gas-fired
  • Heating from both long sides for furnaces with air recirculation
  • Heating from all four sides and the floor with SiC plates in the floor as level stacking support for models to 900  °C or 1280  °C
  • High-quality insulation, adapted to the specific maximum temperature
  • Electrohydraulic opening system of the lid with two-hand operation
  • Closable air supply vents in the lower area of the furnace chamber
  • Closable exhaust air vents in the lid
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load

Additional equipment

  • Motor-driven exhaust air flaps for faster cooling
  • Controlled fan cooling with motor-driven exhaust air flaps
  • Multi-zone control of the heating provides for optimum temperature uniformity
  • Furnace chamber can be devided in length for short workparts, partitions can be controlled separately
  • Designed for Tmax 950  °C, fan blade driven indirectly via a belt to protect the air recirculation motor against over-heating
  • Process control and documentation with Controltherm MV software package
 

Air Circulation Chamber Furnaces/Ovens with Safety Technology for Solvent-Containing Charges According to EN 1539 or NFPA 68

 
  Ship-lock type furnace N 560/26HACLS with safety technology, front charging and rear unloading Drying oven KTR 1500 for drying of foundry cores with an alcohol-based binder

Exhaust port and powerful exhaust fan mounted on the furnace

Guide-in tracks for furnaces with bottom insulation

Safety Technology for Air Circulation Chamber Furnaces

Certain processes release and vaporize solvents or other flammable vapors. The concentration of these vapors must be kept below a certain limit to prevent ignition. European Norm EN 1539 and NFPA 68 in the USA prescribe the required safety equipment for these processes.

For these applications and processes, all air circulation furnaces of the KTR and N ..HACLS product lines are suited with safety technology for protection of a potentional ignition in the furnace chamber.

To avoid an ignition in the furnace, flammable vapors must be diluted with air. Special care must be taken so high concentrations of flammable materials do not accumulate in “dead” areas within the furnace. For this purpose, the furnaces are equipped with an exhaust gas fan providing for a defined underpressure. A measurement system monitors this flow, while fresh air is simultaneously resupplied. In parallel, the furnace atmosphere is diluted by the inflow of fresh air. The air circulation is also monitored by the measurement system.

  • Furnace sizes between 120 and 10000 liters
  • Powerful exhaust fan capable of maintaining underpressure in the furnace
  • Defined and monitored air circulation flow and exhaust air
  • Visual and audible emergency signals
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load

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