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. 

プロセス制御

機能と設備

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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 with touch operation P570 (50 programs with each 40 segments)

付加装置

  • 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

技術仕様

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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