Heavy Duty Box Furnace
Heavy Duty Box Furnace
These furnaces are used for a variety of heat treating applications such as tempering, hardening, sintering or firing, including those requiring inert atmospheres. Precision microprocessor based temperature controls and energy-saving insulation maximize the performance of these rugged units.
Heavy Duty Box Furnace Model Specifications:
Not for use with flammable solvents, vapors, or gases.
| Model | Workspace | Outside Dimensions*(WxDxH) | Max Temp | Heat Input | Insulation Thickness | Operating Characteristics† | Door Type | Height w/ Door Open | Hearth Rating | Approx Shipping Weight | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dimensions(WxDxH) | VolumeCu Ft | ElectricKW | GasBTU/HR | Control Accuracy | Temperature Uniformity | Rise Time (Electric) | Rise Time (Gas) | ||||||||
| HD-153015 | 15" x 30" x 15" | 3.9 | 37" x 53" x 63" | 2,000°F | 18 | 225,000 | 9" | ± 0.3% | ±15°F | 45 | 35 | 78" | 230 | 1,500 lbs | |
| HD-183618 | 18" x 36" x 18" | 6.8 | 55" x 79" x 74" | 2,000°F | 24 | 300,000 | 9" | ± 0.3% | ±15°F | 175 | 130 | 100" | 320 | 2,650 lbs | |
| HD-243618 | 24" x 36" x 18" | 9 | 61" x 78" x 77" | 2,000°F | 33 | 360,000 | 9" | ± 0.3% | ±15°F | 135 | 120 | 100" | 450 | 3,000 lbs | |
| HD-243624 | 24" x 36" x 24" | 12 | 61" x 78" x 80" | 2,000°F | 40 | 440,000 | 9" | ± 0.3% | ±15°F | 125 | 110 | 112" | 450 | 3,600 lbs | |
| HD-244824 | 24" x 48" x 24" | 16 | 61" x 92" x 80" | 2,000°F | 48 | 525,000 | 9" | ± 0.3% | ±15°F | 120 | 105 | 112" | 600 | 4,100 lbs | |
| HD-304830 | 30" x 48" x 30" | 25 | 67" x 92" x 86" | 2,000°F | 56 | 650,000 | 9" | ± 0.3% | ±16°F | 120 | 90 | 118" | 750 | 4,500 lbs | |
| HD-364836 | 36" x 48" x 36" | 36 | 73" x 92" x 93" | 2,000°F | 66 | 750,000 | 9" | ± 0.3% | ±18°F | 140 | 100 | 133" | 950 | 5,250 lbs | |
| HD-306030 | 30" x 60" x 30" | 31.3 | 67" x 104" x 86" | 2,000°F | 60 | 700,000 | 9" | ± 0.3% | ±16°F | 135 | 105 | 118" | 850 | 5,100 lbs | |
| HD-366036 | 36" x 60" x 36" | 45 | 73" x 104" x 93" | 2,000°F | 73 | 800,000 | 9" | ± 0.3% | ±18°F | 140 | 100 | 133" | 1150 | 5,700 lbs | |
| HD-367236 | 36" x 72" x 36" | 54 | 73" x 116" x 93" | 2,000°F | 86 | 950,000 | 9" | ± 0.3% | ±18°F | 140 | 95 | 133" | 1350 | 6,300 lbs | |
| HD-484836 | 48" x 48" x 36" | 48 | 85" x 92" x 93" | 2,000°F | 78 | 850,000 | 9" | ± 0.3% | ±20°F | 135 | 90 | 133" | 1200 | 6,200 lbs | |
| HD-484848 | 48" x 48" x 48" | 64 | 85" x 92" x 105" | 2,000°F | 92 | 1,000,000 | 9" | ± 0.3% | ±20°F | 130 | 90 | 157" | 1400 | 6,900 lbs | |
| HD-487248 | 48" x 72" x 48" | 96 | 85" x 116" x 105" | 2,000°F | 135 | 1,400,000 | 9" | ± 0.3% | ±22°F | 120 | 90 | 157" | 2000 | 8,500 lbs | |
* Outside Dimensions
- All Models: Control panel overhang 9″ right side.
- Gas Models:
- Combustion blower overhang 36″ rear.
- Gas spring assists operation. Construction similar to electric door.
- Heating elements located on sidewalls and roof only; 13.5 KW
† Operating Characteristics
- Accuracy as percent of controller span.
- Uniformity at 100°F below maximum temperature.
- Rise Time in minutes to 100°F below maximum temperature.
- Tests run with empty oven and minimum exhaust.
- Performance will vary with load and application.
- See Control & Instrumentation Summary for additional details.
Specifications for Heavy Duty Box Furnace
| MODEL | HD-304830 |
|---|---|
| MAXIMUM OPERATING TEMP | 2,000°F |
| AIR FLOW | Radiant |
| CONTROL ACCURACY | ± 0.3% |
| OVEN UNIFORMITY | ±16°F |
| RISE TIME - ELECTRIC | 120 mins |
| RISE TIME - GAS | 90mins |
| WORKS SPACE DIMENSIONS (WxDxH) | 30" x 48" x 30" |
| SHELVES INCLUDED | None |
| NUMBER OF SHELVES MAX | None |
| SHELF CAPACITY | None |
| MAX LOAD CAPACITY | Not Available |
| DOORS | Electric |
| LOADING METHOD | Floor |
| APPROXIMATE SHIP WEIGHT | 4500 lbs |
| OUTSIDE DIMENSIONS (WxDxH) | 67" x 92" x 86" |
Standard Features for Heavy Duty Box Furnace
Certifications
- UL Listed Control Panel
- Meets the Requirements of the Following Standards:
- NFPA 86 (Standard for Ovens and Furnaces)
- NFPA 70 (National Electric Code)
- FM (Factory Mutual)
- OSHA
- Caution:
- When processing combustible material fire protection should be considered
- Not for use with flammable solvents or vapors. Other models available for these applications. For more information see Class A Solvent Processing page at this website
Safety Equipment
- Adjustable manual reset excess temperature interlock to turn off heat on malfunction of main temperature controller
- Electric Heat Includes
- Separate heating element control contactors to turn off heat on malfunction of main control contactors
- Door interlock turns off power to heating elements when door is opened to protect operator from line voltage at heating elements
- Gas Heat Includes
- Multiple modulating burners fired under hearth from opposing sides to circulate heated air (single burner at top of work space on HD-153015)
- Automatic pre-ignition purge period to clear accumulated gas or fumes from furnace
- Push button electric ignition
- Microprocessor based electronic flame safeguard protection for each burner to continuously monitor flame and close gas valves if flame is not present
- Combustion air blower
- Combustion Blower air flow safety switch to close gas valves on loss of combustion air flow
- High and Low gas pressure switches to confirm safe operating pressure range
- Two pilot valves for each pilot to guarantee gas flow to pilot can be stopped
- Two main safety shut off valves for each burner with valve seat position indicator to assure gas flow to each main burner can be stopped
- Proof of closure switch on one main valve at each burner to prevent igniting pilot unless main valve is closed
- Leak test station at each pilot and main burner valve to allow testing for leakage through valve
- Door interlock drives main burners to low fire as door is opened to protect operator from flames
Controls
- Digital temperature controller
- LED pilot lights
- On-off heat switch
- 5 kA short circuit current rating (SCCR)
Construction
- Choice of
- Air or Inert Atmosphere construction
- Electric or Gas heat (Air construction only)
- 208 volt, 230 volt or 460 volt, 3-phase, 60 HZ – other input power available
- All welded construction
- High temperature Kanthal A-1 coiled wire heating elements supported in vacuum cast refractory ceramic fiber located on all walls and beneath hearth
- 1000 BTU per cubic foot natural gas at 2 psig pressure – propane available. Inlet 1” NPT up to 800,000 BTU/hr, 1-¼ “ NPT to 1,000,000 BTU/hr, 1-½” NPT above 1,000,000 BTU/hr
- Insulated with 9”of light weight, energy saving refractory ceramic fiber
- Load supporting floor insulated with 4” of 18-½ lbs per cubic foot density 1900⁰F block and 4-½” of firebrick,
- 3/16” steel plate reinforced furnace shell with Trilite Green enamel finish
- ½” thick steel front plate around door
- Fire brick throat and doorsill to protect furnace during loading
- Brushed stainless steel control panel face
- Powered vertical lift door (gas spring assisted manual door on HD-153015)
o Electric door: Electromechanical operator pivots door, supported by structural steel arms and bearings, upward above furnace
o Air door: Air cylinder lifts door hanging from heavy duty roller chain supported by sprockets, shaft and pillow block bearings - Door hot side faces away from operator
- Soft insulation on door hot face seals against throat brick and steel front plate
- 2” thick , heavy duty ceramic hearth plates supported by fire brick piers
- Fully assembled and factory tested
- 1 year limited warranty
Modifications & Accessories for Heavy Duty Box Furnace
-
Alloy Hearth Tray
Furnace accessory adding an Alloy Hearth Tray. Manufactured with heat resistant alloy that protects ceramic hearth plates from impact and heavy loading.
-
Programmable Temperature Controller
Oven modification adding a programmable Temperature Controller. Microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller.
-Program Parameters: 40 profiles of up to 50 steps each, a real-time clock with battery backup to allow starting profile at any time of day
-Digital Display, 4.3” color touch screen
-Accuracy, ±0.1% of span plus 1 degree display error
-Connectivity, Relay output for alarm or other notification, two (2) USB ports, Ethernet compatible
Also Available:
-Up to four (4) control channels of temperature, relative humidity or vacuum
-Monitor up to16 sensors
-Math and logic functions
-Digital inputs and outputs
-Data logging
-Graphic Trending
-
Recording Thermometer
Accessory adding a Recording Thermometer. Thermocouple actuated.
- Record: 10″ diameter circular chart 24 hour chart rotation
- Digital Display: 0.56″ high, LED, alphanumeric, 4 digit display; LED status display
- Accuracy: ±0.25%of span plus 1 degree display error
-
Digital Shut Down Timer
Accessory adding a Digital Shut Down Timer. Shuts down oven, selectable range, continuous “hold” feature.
-
Install Customer Supplied Temperature Controller
Modification installing a customer supplied temperature controller in lieu of standard controller.
-
Digital Batch Timer
Oven modification adding a Digital Batch Timer. Uniformly timing batch operations, continuous alarm with door interlock, alarm sounds at end of preset time until door is opened or timer reset.
-
Supply Oven Without Controller
Supply without temperature controller. Supply cutout, thermocouple, and wires only. Customer to supply and install temperature controller.
-
Program Timer
Oven modification adding a programmable 24 hour, 7 day timer.
-
Equipment Shut Down Via Event Output
Modification adding a Equipment Shut Down Via Event Output. Shuts down oven via event output on programmable controller.
Custom Furnaces
-
Pallet Furnace
Serial #: 700048Removable pallet work space bottom
- MAX TEMP: 2000ºF
- WORKSPACE DIMS (WxDxH): 30" x 48" x 36"
-
Heavy Duty Box Furnace
Serial #: 700050Designed for preheating prior to forging. Manual vertical lift door to partially open to create loading slot.
- MAX TEMP: 2000ºF
- WORKSPACE DIMS (WxDxH): 72" x 36" x 18"
-
Model HD-304830 Inert Atmosphere Furnace
Serial #: 80263A0504Alloy roller rails, alloy loading fixture and external support rack to hold fixture in front of furnace
- MAX TEMP: 2000ºF
- WORKSPACE DIMS (WxDxH): 30" x 48" x 36"
-
Model HD-366036-ATM Inert Atmosphere Heavy Duty Furnace
Serial #: 114670A0415Inert atmosphere construction for heat treating turbine components
- MAX TEMP: 2000ºF
- WORKSPACE DIMS (WxDxH): 36" x 60" x 36"
-
Model HD-306030-GF-RR Gas-Fired Heavy Duty Furnace
Serial #: 114731A0415Two lanes of roller rails supported by firebrick piers and air operated roller rail platform to bridge from loading table to work space
- MAX TEMP: 2000ºF
- WORKSPACE DIMS (WxDxH): 30" x 60" x 30"
