Series 8300 GT - High Temperature Inert Atmosphere GT Dual Chamber Furnaces

Unique “Space Saver” design offers convenience and economy of two independently controlled chambers in one packaged assembly. The upper chamber (Hardening) is equipped with silicon carbide heating elements and designed for operation with inert protective atmosphere to 2500°F. This chamber is constructed with a continuously welded shell, gasketed door assembly, and inlet and outlet ports for operation with a positive flow of atmosphere. These models are best suited for constant operation to maintain a dry refractory environment in the work area to minimize oxidation on work loads. The elements are mounted above and below the hearth and fire through an eight step voltage regulating transformer with selector switches to provide maximum element life. The lower chamber (Tempering) is complete with coil wound heating elements, stainless steel liner and fan to recirculate heat for uniform temperature. Available at operating temperatures of 800°F(88), 1200°F(82), 1400°F(84), and 1600°F(86).

Ruggedly constructed and rated for work loads up to 50 lbs. per square foot of hearth area. All models are completely wired, test fired and shipped ready for connection to main power supply. Available in over twenty standard model sizes.

Standard Features

  • Continuously welded upper chamber sheet metal shell construction. Both chambers designed with same working dimensions.
  • Silicon carbide heating elements mounted above and below hearth for uniform heat in upper chamber.
  • Multi-layered energy efficient lightweight firebrick and mineral block insulation for maximum heat storage and minimum heat loss.
  • Coil wound heating elements mounted in easy-to-replace holders located on side walls of lower chamber.
  • Silicon carbide hearth plate for load support and thermal transfer from floor elements in upper chamber.
  • Manual vertical lift gasketed upper chamber door and horizontal swing lower chamber door.
  • Safety micro-switch shuts off power to elements and fan when door opens.
  • Honeywell digital temperature controller with type K thermocouple and magnetic contactor on each chamber.
  • Controls and power components mounted in a separate free standing NEMA 1 panel.

Options

Flow meters, regulators, oxygen analyzers, dew point indicators, program controllers, over temperature safety systems, timers, recorders, quench tanks, alternate door arrangements, computer interface, gloves and tongs.

 

Specifications

Model Chamber Overall KW Voltage Weight (lbs)
H" W" L" H" W" L"
83GT-A6 6 6 6 80 32 39 3.5 230/460/1 875
83GT-A9 6 6 9 80 32 39 4.5 230/460/1 1000
83GT-A12 6 6 12 80 32 42 6.5 230/460/1 1100
83GT-A18 6 6 18 80 32 48 8.75 230/460/1 1225
83GT-B9 9 9 9 90 36 39 8.5 230/460/1 1200
83GT-B12 9 9 12 90 36 42 10.5 230/460/1 1600
83GT-B18 9 9 18 90 36 48 14 230/460/1 2000
83GT-B24 9 9 24 90 36 54 17 230/460/1 2400
83GT-H12 9 12 12 90 40 42 12.5 230/460/1 1700
83GT-H18 9 12 18 90 40 48 17 230/460/1 1900
83GT-H24 9 12 24 90 40 54 21 230/460/3 2300
83GT-H36 9 12 36 90 40 64 28.5 230/460/3 2600
83GT-K12 12 12 12 100 40 42 15.5 230/460/3 1800
83GT-K18 12 12 18 100 40 48 20 230/460/3 2100
83GT-K24 12 12 24 100 40 54 25.5 230/460/3 2500
83GT-K36 12 12 36 100 40 64 35 230/460/3 2900
83GT-M18 12 18 18 100 48 48 27 230/460/3 2300
83GT-M24 12 18 24 100 48 54 33 230/460/3 2800
83GT-M36 12 18 36 100 48 64 43 230/460/3 3300
83GT-M48 12 18 48 100 48 78 52 230/460/3 3900
83GT-O18 18 18 18 112 48 48 35 230/460/3 3200
83GT-O24 18 18 24 112 48 54 41 230/460/3 3600
83GT-O36 18 18 36 112 48 64 53 230/460/3 4200
83GT-O48 18 18 48 112 48 78 64 230/460/3 4800

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