Gradient Furnaces


The Orton Model GTF-MD-1612 (1600C maximum) Furnace is a specially designed horizontal tube furnaces with controlled, reproducible, linear thermal gradients of approximately 120C across a 12″ long monitored zone. The Orton Model GTF-MD-1616 Furnace is a longer versions with controlled, reproducible, linear thermal gradients of approximately 160C across a 6″ long monitored zone. Thermocouples on 2″ centers monitor the temperatures along the gradient zone, so the temperature of the material at any position along the D-tube hearth is known. Visual or post firing analyses of sections taken from the fired material at any position along the D-tube hearth can be measured, recorded, and studied as a function of temperature.

The furnace is a rectangular, metal shell structure that houses the refractory fiber insulation and four molybdenum disilicide heating elements that surround one end of the 2 7/8 ID ceramic heating chamber tube. The samples to be fired are placed on the top of the 2.5 wide high alumina D-tube hearth, which rests on the bottom of the ceramic heating chamber tube. Type "S thermocouples are spaced on 2 centers along the monitored zone and extend vertically through the top of the heating chamber tube. Two IFB end plugs are included to close both ends of the furnace.

Low Temperature Gradient Furnace (1200C max.)

Furnaces designed with lesser temperature requirements have lower cost. 1200C max temperature furnaces share the same design features as the higher temperature units but can use lower cost insulation packages, heating elements, power controls and thermocouple sensors.

If your application requires max temperature of 1200C or less, contact Orton for a special quote to meet your gradient furnace needs.


Model GTF-MD-1612





General

A Horizontal, bench top gradient furnace system with 12 monitored zone. Typical temperature gradient is 10 -12C/inch at 1400C. Study the effects of temperature on ceramic properties of interest. As a liquidus furnace is useful for determining the maximum temperature at which crystallization will form in a glass, and a minimum temperature at which a glass can be held for extended periods of time without crystal formation and growth.

Can be operated according to ASTM C-829

Includes
  • 1600C Box furnace with 2.875 ID Alumina core tube
  • Programmable process controller
  • Alumina D-Tube hearth
  • 7 Type "S" thermocouples spaced every 2 inches in the monitored zone
  • 5KVA power transformer and 6 position temperature display meter.
  • Power Requirements
  • 240vac/220vac/208vac, 30amp, 50/60Hz
Specification :

Model  :  GTF-MD-1612
Warranty  :  12 Months
Temperature Range :   RT to 1,600C
Furnace  :  Tube style, 12 inch heated zone
Thermocouples  :  Type S
D-tube hearth  :  Alumina 2.5 wide, 17 long
Thermocouple spacing :   2 inches
Heating elements  :  Molybdenum Disilicide
Temperature Control  :  Honeywell UDC 3200 Process controller
Power Control  :  4-20ma / SCR
Total Gradient  :  120 144C
Heating/Cooling Rate  :  1 to 10C/minute
Power Requirements  :  208-240vac, 30amp, 50 or 60Hz
Computer Interface :   Optional
Atmosphere  :  Optional
Furnace Dimensions  :  25 x 15 x 18 (L x W x H)
Component Dimensions  :  Controller Console: 17 x 14 x 5.5
                                          Transformer: 15 x 9 x 10
                                          Temperature Display: 10 x 8 x 4.5
Shipping Weight/Dimensions :   186 lbs. / 49 x 26 x 31 (1 carton on 1 pallet)




Model GTF-MD-1616




General


A Horizontal, bench top gradient furnace system with 16 monitored zone. Typical temperature gradient is 10 -12C/inch at 1400C. Study the effects of temperature on ceramic properties of interest. As a liquidus furnace is useful for determining the maximum temperature at which crystallization will form in a glass, and a minimum temperature at which a glass can be held for extended periods of time without crystal formation and growth.

Can be operated according to ASTM C-829

Includes
  • 1600C Box furnace with 2.875 ID Alumina core tube
  • Programmable process controller
  • Alumina D-Tube hearth
  • 9 Type "S" thermocouples spaced every 2 inches in the monitored zone
  • 5KVA power transformer and 8 position temperature display meter.
  • Power Requirements
  • 240vac/220vac/208vac, 30amp, 50/60Hz
Specification :

Model  : GTF-MD-1616
Warranty  :  12 Months
Temperature Range :   RT to 1,600C
Furnace  :  Tube style, 16 inch heated zone
Thermocouples  :  Type "S"
D-tube hearth  :  Alumina 2.5 wide, 23 long
Thermocouple spacing  : 2 inches
Heating elements  :  Molybdenum Disilicide
Temperature Control  :  Honeywell UDC 3200 Process controller
Power Control  :  4-20ma / SCR
Total Gradient  :  160 - 192C
Heating/Cooling Rate  :  1 to 10C/minute
Power requirements  :  208/240vac, 30amp, 50 or 60Hz
Computer Interface  :  Optional
Atmosphere  :  Optional
Furnace Dimensions  :  32 x 15 x 18(82 x 38 x 46 cm)
Component Dimensions  :  Controller Console: 17 x 14 x 5.5
                                          Transformer: 15 x 9 x 10
                                          Temperature Display: 10 x 8 x 4.5
Shipping Weight/Dimensions  :  200 lbs. / 49 x 26 x 31 (1 carton on 1 pallet)



 
 
 
 
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