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Fusing Furnaces with Fixed Table

Fusing furnace GF 600 Fusing furnace GF 75

Fusing furnace GF 240

"Combing" in a fusing furnace GF 240

Exhaust air flap as additional equipment

Front made of textured stainless steel

Finished parts out of a fusing furnace

The fusing furnaces in the GF 75 - GF 1425 product line were conceived for professional glass artists. The heating elements, closely arranged, protected in quartz tubes, ensure a very high degree of temperature uniformity during fusing or during bending across the whole table surface. The insulation, made of non-classified fibrous material in the furnace hood and robust lightweight refractory bricks in the furnace floor allow clean and safe operation. High current connection capacities assure that the fusing furnace can be rapidly heated up.

  • Tmax 950 °C
  • Heating element, protected in quartz tubes
  • High current connection capacities for short warm-up times and energy-saving way of working
  • Arranged closely beside each other on the top, heating elements ensure direct and uniform radiation of the glass
  • Dual shell hood made of stainless steel with slotted cover lid
  • Controller integrated to save space on the right side of the furnace
  • Level table surface with insulation made of robust lightweight refractory bricks and marked charge surface
  • Hood insulation made of non-classified ceramic fibers for rapid heating up and cooling down
  • Adjustable, large quick-release fasteners - can be used while working in gloves
  • Handles on the left and right side of the hood for opening and closing the furnace
  • Hood safety switch
  • Solid state relays provide for low-noise operation
  • Rapid switching cycles result in precise temperature control
  • Type K thermocouple
  • Hood easy to open and close, supported by compressed-gas springs
  • Lockable air inlet opening for ventilation, fast cooling and observation of charge
  • Robust base on rollers (two of them can be locked down) with tray for glass and tools
  • Comfortable charging height of 870 mm
  • Defined application within the constraints of the operating instructions
  • NTLog for Nabertherm Controller: Recording of process data with USB-flash drive
ModelTmaxInner dimensions in mmFloor spaceOuter dimensions in mmHeating powerElectricalWeight
 °Cwdhin m2WDH3in kW4connection*in kg
GF 75950 6206203100.38110096513103.61-phase180
GF 75 R950 6206203100.38110096513105.53-phase1180
GF 190 LE95010106204000.62148096514006.01-phase2245
GF 190 95010106204000.62148096514006.43-phase1245
GF 24095010108104000.8114801155140011.03-phase250
GF 380950121011004001.3316801465140015.03-phase450
GF 42095016609504001.5721301315140018.03-phase500
GF 520950121011604001.4016801525140015.03-phase550
GF 600950201010104002.0324801375140022.03-phase600
GF 920950211011604002.4425801525140026.03-phase850
GF 1050950231012104002.7927801575140032.03-phase1050
GF 1425950251015104003.7928801875140032.03-phase1200
1Heating only beetween two phases *Please see page 73 for more information about supply voltage
2Fusing of 32 A if connected to 230 V 3Base included
4Depending on furnace design connected load might be higher
 

Fusing Furnaces with Movable Table

Fusing furnace GFM 920

Bottom heating for uniform through heating of large objects as additional equipment

Tables for expansion of the furnace system as additional equipment; Interchangeable table system to use the residual heat of the furnace and to reduce cycle times by changing table in warm state

Motor-driven lid as additional equipment

Front made of textured stainless steel

Inspection glass in air inlet opening for observation of the glass as additional equipment

The fusing furnaces of GFM product line were developed to meet the special requirements of production. For different applications different table models can be supplied. Standard is a table for fusing. Various tables and tubs with different heights are available as system add-ons. Especially economical is the alternating table system, in which one table is loaded while the other one is in the fusing furnace.

  • Tmax 950 °C
  • Heating element, protected in quartz tubes
  • High current connection capacities for short warm-up times and energy-saving way of working
  • Arranged closely beside each other on the top, heating elements ensure direct and uniform radiation of the glass
  • Infrared heated in hood which is attached to stand
  • Dual shell hood made of stainless steel with slotted cover lid
  • Delivered with table
  • Table on wheels, freely movable
  • Controller integrated to save space on the right side of the furnace
  • Level table surface with insulation made of robust lightweight refractory bricks and marked charge surface
  • Hood insulation made of non-classified ceramic fibers for rapid heating up and cooling down
  • Adjustable, large quick-release fasteners - can be used while working in gloves
  • Handles on the left and right side of the hood for opening and closing the furnace
  • Hood safety switch
  • Solid state relays provide for low-noise operation
  • Type K thermocouple
  • Hood easy to open and close, supported by compressed-gas springs
  • Lockable air inlet opening for ventilation, fast cooling and observation of charge
  • Comfortable charging height of 870 mm
  • Defined application within the constraints of the operating instructions
  • NTLog for Nabertherm Controller: Recording of process data with USB-flash drive

Additional features for fusing furnaces GF and GFM

  • Motor-driven lid opening for faster cooling for models GF 380 and/or GFM 420 up
  • Bottom heating for uniform through heating of large objects
  • Cooling fan for accelerated cooling with closed lid
  • Tables for expansion of the furnace system for models GFM; Interchangeable table system to use the residual heat of the furnace and to reduce cycle times by changing table in warm state.
  • Motor-driven exhaust air flap for faster cooling of the fusing furnace
  • Air inlet flap with window for observing the glass
  • Process control and documentation via VCD software package for monitoring, documentation and control
ModelTmaxInner dimensions in mmFloor spaceOuter dimensions in mmHeating powerElectricalWeight
 °Cwdhin m2WDHin kW1connection*in kg
GFM 42095016609504001.57217013401400183-phase630
GFM 520950121011604001.40172014401400153-phase660
GFM 600950201010104002.03253014001400223-phase730
GFM 920950211011604002.44263015501400263-phase980
GFM 1050950231012104002.79283016001400323-phase1190
GFM 1425950251015104003.79303019001400323-phase1390
1Depending on furnace design connected load might be higher *Please see page 73 for more information about supply voltage
 

Tub Furnaces with Wire Heating

Tub furnace GW 1660 Top hat furnace GW 2208/S with electro-hydraulically driven hood, tub can be pulled out on rails

Tub furnace GW 2200

Bottom heating covered by SiC tiles to create level stacking support

Automatic lid opening via electromechanical spindle

Motor-driven exhaust air flaps as additional equipment

Tub furnace GW 1660

For slumping and bending of complex glass parts, e.g. glass furniture, shower cabins, etc., tub furnaces are the right choice. Full coverage heating: from the lid, all 4 sides and the tub bottom. Due to the modular system additional tubs in customized dimensions can be provided.

  • Tmax 900 °C
  • Full coverage heating: from lid, all 4 sides and bottom
  • 3-zone temperature control from top to bottom for optimal temperature uniformity
  • Heating elements mounted on ceramic support tubes for free heat radiation and long service life
  • Bottom heating covered by SiC tiles
  • Hood insulated with non-classified fiber materials
  • Tub bottom insulated with multi-layer of insulation, lightweight refractory bricks on the hot face
  • Hinged hood as standard version
  • Gas operated dampers provide for easy hood opening
  • Manually operated exhaust air flaps
  • Tub on wheels can be pulled out manually
  • Rails on floor for perfect tub guidance included
  • Defined application within the constraints of the operating instructions

Additional equipment

  • Interchangeable table system on rails, electrically driven on request
  • Electro-hydraulically driven hood instead of hinged cover
  • Tub insert to elevate bottom height, in order to use the furnace for glass fusing applications (in this product version the tub heating can be switched off
  • Automatic lid opening for faster cooling, programmable via the controller extra function
  • Motor-driven exhaust air flaps in the hood for preselected cooling
  • Powerful cooling system An efficient fan system, mounted to the furnace, cools the dual shell housing from the back. This system shortens cooling times by up to 50 % subject to cycles and charge. Direct contact between the cooling air and charge, hence turbulences in the firing chamber are avoided, protecting the glass from any damage.
  • Interchangeable table system running on rails
  • To shorten process times and optimise operational capacity, two or more furnace tubs, placed alternately under the hood, can be used. An automatic tub changing system is also available on request.
  • Process control and documentation via Nabertherm Control Center (NCC) for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeating ElectricalWeight
 °Cwdhin lWDHpower in kW1connection*in kg
GW 83090012001150600830214019801250363-phase820
GW 8409001650850600840259016801250363-phase980
GW 1200900200010006001200294018301250403-phase1210
GW 1500900210011506001450304019801250703-phase1420
GW 1660900230012006001660324020301250803-phase1780
GW 2200900230012008002200324020301400903-phase2160
GW 80009003700270080080004640353014001803-phase2980
1Depending on furnace design connected load might be higher *Please see page 73 for more information about supply voltage
 

Top Hat Furnaces with Wire Heating with Table

Top hat furnace HG 5208/S with two tables for bending and slumping of glass Top hat furnace HG 1196/S with top hat and table heating; table heating can be switched-off during fusing

Top hat furnace HG 2000

Motor-driven exhaust air flaps as additional equipment

Heating elements in furnace hood

Nabertherm markets this range of top hat furnaces for bending and slumping of large glass parts. The top hat furnace is equipped with one table running on rails which can be pulled out for easy charging. As accessory an additional table can be integrated, which is charged while the other table is in the furnace. The top hat furnaces are heated from the ceiling and from the table.

  • Tmax 900 °C
  • Heating from lid and table
  • 3-zone temperature control (lid-inner circular element, lid-outer circular element, table) for optimal temperature uniformity
  • Table heating can be switched-off for fusing
  • Heating elements on supporting tubes provide for long service life
  • Table heating elements covered by SiC tiles for level stacking support
  • Hood insulated with non-classified fiber materials
  • Table insulated with multi-layer resistant, lightweight refractory bricks
  • Top hat to be opened by overhead crane in floor shop
  • Protection guides for easy top hat opening and closing
  • Manually-operated exhaust air flap
  • Furnace table on fixed chassis for user-friendly charging height (approx. 800 mm)
  • Defined application within the constraints of the operating instructions
  • NTLog for Nabertherm Controller: Recording of process data with USB-flash drive

Additional equipment

  • Top hat side heating in case of high top hat dimensions
  • Interchangeable table system on rails, electrically powered on request
  • Electro-hydraulically driven top hat
  • Cooling system
  • Table on wheels for free movement
  • Motor-driven exhaust air flaps
  • Process control and documentation via Nabertherm Control Center (NCC) for monitoring, documentation and control
ModelTmaxInner dimensions in mmFloor spaceOuter dimensions in mmHeating powerElectricalWeight
 °Cwdhin m2WDHin kW1connection*in kg
HG 750900210012003002.52255018001350353-phase1200
HG 1000900175010005501.75220014501600333-phase1500
HG 1500900210012505502.63255017001600443-phase2000
HG 1800900245018504004.35295023501600453-phase2500
HG 2000900245015005503.68290019501600553-phase2500
HG 2640900300022004006.60350027001450753-phase3400
HG 3000900350022004007.70400028001600753-phase3800
HG 48009005500210040011.55600027001600903-phase4500
HG 5208/S900310021008006.513990259031401103-phase5000
HG 7608/S900380025008009.504690299031401433-phase7000
1Depending on furnace design connected load might be higher *Please see page 73 for more information about supply voltage