Brick-Insulated Chamber Furnaces for Cooling/Relieving Stresses in Glass

Due to the five-sided heating and a special arrangement of the heating elements, the furnaces ensure good temperature uniformity. 

Sterowanie procesami

Funkcja i wyposażenie

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N300G.png
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Chamber furnace N 660/G with exhaust flue and switchgear on the side (special design)
Chamber furnace N 300/G with controlled cooling
Chamber furnace N 500/GS
Controlled cooling as additional equipment
Charging trolley for chamber furnace N 2200
Switchgear on the side (special design)

The chamber furnaces to 900 °C are ideally suited for cooling and relieving stresses in glass. Other applications include sterilizing glass components after they have been cleaned and burning in coatings. Due to the five-sided heating and a special arrangement of the heating elements, the furnaces ensure good temperature uniformity. With an extensive range of additional equipment, these chamber furnaces can be adapted to suit many different process requirements.

  • Tmax 900 °C
  • Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
  • Five-side heating provide for good temperature uniformity
  • Heating elements on support tubes provide for free heat radiation and long service life
  • Multi-layer insulation consisting of lightweight refractory bricks and backed by special fiber insulation
  • Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
  • Self-supporting and long-life ceiling construction, with bricks laid in arched construction
  • Bottom heating protected by SiC tiles with an even stacking base
  • Semi-automatic air inlet flap for chamber kilns up to 300 liters
  • Infinitely adjustable, manual air inlet from 360 liters
  • Exhaust air opening in the lid, including connection for an exhaust air tube (80 mm diameter) up to 300 liters
  • Motorized exhaust air flap in the top of the furnace for optimum ventilation of the furnace chamber and for rapid cooling at low temperatures from 300 liters
  • Frame included for furnaces up to 660 liters
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
  • Controller mounted on furnace door and removable for comfortable operation
  • Controller P570 (50 programs with each 40 segments)

Dodatkowe wyposażenie

  • Automatic control of the air inlet flap (up to 300 liters)
  • Motorized exhaust air flap for optimum ventilation of the furnace chamber and for rapid cooling at low temperatures (up to 300 liters, included from 360 liters)
  • Cooling system, including P570 Controller, to speed up furnace cooling with a fan and specified temperature gradients or a fixed volume of fresh air. Both operating modes can be activated for different segments, using an extra function of the controller.
  • Protective gas connection for purging the furnace with non-flammable protective or reaction gases
  • Automatic gas supply system for nitrogen or argon
  • Multi-zone control for optimal temperature uniformity in the work space
  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
  • Metal charging trolley with inserts for Tmax 550 °C or Tmax 800 °C
  • Process control and documentation via VCD software package for monitoring, documentation and control

Specyfikacja techniczna

Model Tmax Inner dimensions in mm Volume Outer dimensions1 in mm Heating power Electrical Weight
  °C w d h in l W D H in kW2 connection in kg
N 100/G 900 400 530 460 100 720 1130 1440 7 3-phase 275
N 150/G 900 450 530 590 150 770 1130 1570 9 3-phase 320
N 200/G 900 470 530 780 200 790 1130 1760 11 3-phase 375
N 200/GS 900 400 1000 500 200 795 1710 1605 16 3-phase 300
N 250/GS 900 500 1000 500 250 895 1710 1605 18 3-phase 370
N 300/G 900 550 700 780 300 870 1300 1760 15 3-phase 450
N 360/GS 900 600 1000 600 360 995 1710 1705 20 3-phase 500
N 440/G 900 600 750 1000 440 1000 1410 1830 20 3-phase 820
N 500/GS 900 600 1400 600 500 995 2110 1705 22 3-phase 1000
N 660/G 900 600 1100 1000 660 1000 1750 1830 26 3-phase 950
N 1000/G 900 800 1000 1250 1000 1390 1760 2000 40 3-phase 1680
N 1500/G 900 900 1200 1400 1500 1490 1960 2150 57 3-phase 2300
N 2200/G 900 1000 1400 1600 2200 1590 2160 2350 75 3-phase 2800
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
2Depending on furnace design connected load might be higher

 

Charging trolley Trolley dimensions in mm Insert dimensions in mm Removable rails
for model3 W D H W D H Quantity Distance in mm
N 100/G 370 505 410 315 470 22 12 30
N 150/G 430 505 540 375 470 22 12 40
N 200/G 450 505 730 395 470 22 17 40
N 300/G 530 675 730 478 640 22 17 40
3Charging trolley for larger models available as a special design

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