MUFFLE FURNACE (1000 C - 1800 C)

Muffle FurnaceA muffle furnace, also known as chamber or box furnace, provides the user with a cuboidal hot zone, having the depth of the hot zone generally longer than the height and the width. The hot zone is heated using either metallic, Silicon Carbide or Molybdenum Disilicide heating elements.

The hot zone is insulated by multiple layers of low thermal mass vacuum formed ceramic fibre boards of a grade commensurate with the maximum furnace operating temperature. The vacuum formed fibre boards together along with furnace duel body construction having forced air circulation between the outer and inner body ensures outer skin temperature below 60° C at the maximum furnace operating temperature. The hot zone generally has a refractory insulated swivel aside door. The door design ensures almost no heat loss from the door during operation and ensures that hot refractory is always facing away from user. The furnaces are equipped with thyristor powered by automatic PID programmable temperature controllers ensuring control accuracy of +/- 1° C. The outer bodies are duly powder coated for good appearance and longer life. These furnaces have a temperature uniformity of +/- 3° C throughout the hot zone.

The maximum operating temperature of these furnaces range from 600°C to 1800°C.

Model

Working Temperature

Width (mm)

Height (mm)

Depth (mm)

Volume (Lt)

Heaters

Thermocoouple Type

MF1000V2

1000

150

150

200

4.5

Metallic

K

MF1100V2

1100

150

150

200

4.5

Metallic

K

MF1100V3

1100

200

200

300

12

Metallic

K

MF1200V2

1200

150

150

200

4.5

Metallic

K

MF1200V3

1200

200

200

300

12

Metallic

K

MF1200V4

1200

300

300

300

27

Metallic

K

MF1400V2

1400

150

150

200

4.5

SiC

R

MF1400V3

1400

200

200

300

12

SiC

R

MF1400V4

1400

300

300

300

27

SiC

R

MF1350V2

1350

150

150

200

4.5

SiC

R

MF1500V1

1500

100

150

150

2.25

MoSi2

R

MF1500V2

1500

150

150

200

4.5

MoSi2

R

MF1500V3

1500

200

200

300

12

MoSi2

R

MF1600V1

1600

100

150

150

2.25

MoSi2

B

MF1600V2

1600

150

150

200

4.5

MoSi2

B

MF1600V3

1600

200

200

300

12

MoSi2

B

MF1700V1

1700

100

150

150

2.25

MoSi2

B

MF1700V2

1700

150

150

200

4.5

MoSi2

B

MF1700V3

1700

200

200

300

12

MoSi2

B

MF1800V1

1800

100

150

150

2.25

MoSi2

B

MF1800V2

1800

150

150

200

4.5

MoSi2

B

MF1800V3

1800

200

200

300

12

MoSi2

B

 

Temperature Control:  Phase angle fired Thyristor based, driven by programmable (PID) profile controller 
Insulation: Vacuum Formed Ceramic Fiber Insulation
Thermocouple Protection: Alumina or Inconel Sheath depending on maximum operating temperature
Safety Features: As per user requirement

 

  • Metal Retorts - A variety of metal retorts are available for use with this range of furnaces. This type of retort is generally used to cater for the following process conditions: a. To maintain controlled atmospheres within the heated chamber; b. To protect the heating elements and insulation from chemical attack by aggressive volatiles given off by fluxes, acids, etc.
  • Four Sided Heating - This option upgrades the standard two sided heating to four sided heating and is recommended in the following circumstances: For use with metal retorts and ceramic liners; To improve chamber temperature uniformity to meet specific process requirements; To up rate the furnace power to cope with large lo
  • R-Type Thermocouple - This option upgrades the standard K Type (mineral insulated inside Inconel sheath) thermocouple to R-Type thermocouple and is recommended if furnace is going to be used continuously at 1200 C.
  • Over Temperature - This option is recommended to protect valuable contents & for unattended operation.
  • Data Logging & Remote Controllers - A range of sophisticated digital controllers, multi-segment programmers and data loggers is available. These can be fitted with RS232 and RS485.
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