Industrial Ovens & Furnaces #589238

SAKAV has designed and manufactured tunnel ovens for all types of processing. These ovens have been designed for use with a wide range of existing conveyor systems. Since 1985 we have been providing electric gas and steam heated units with operating temperatures from 650C to 6500C.

Tunnel ovens are designed to include support points for your conveyor system. Adjustable silhouette dampers are provided on the oven end openings to minimize heat loss.

Each Oven is designed for the specific application and can include multiple heat zones and a cooling zone. Units can be provided in sections for easy installation and mating with existing conveyor system.

Our experienced engineers will work closely with you to develop a tunnel oven to readily accept your conveyor system. Every unit is completely assembled and tested prior to shipment

STANDARD FEATURES

• Aluminized or stainless steel interior depending on maximum temperature rating.
• 16 gauge aluminized steel exterior with enamel finish
• Welded structural steel, channel base provides a rigid assembly easily moved at any time.
• Heavy duty, all welded, structural steel slide bed is supported by cross angles welded to vertical structural members to transfer load to base
• Side hinged doors provided along oven length for access to work space and heat chamber.
• Adjustable dampers at each end of heat zone can be positioned near load to minimize heat loss from end of oven.
• Adjustable patented opposed louvers on full coverage supply and return ductwork.
• Duct work removable for cleaning
• Control Panel
• Brushed stainless steel control panel face
• 1 year limited warranty.

TUNNEL OVEN LENGTH

Tunnel oven width is selected to accommodate the parts and conveyor system. The speed of the conveyor system and the dwell time determine tunnel oven length.

Heat zone length is the product of the conveyor speed and dwell time. To estimate the length of tunnel over required, insert your process information in the relationship below.

To heat zone length calculated, approximately one foot must be added for insulation and silhouette dampers at each end of the oven. Equipment width will be approximately 2' wider than tunnel work space width to accommodate insulation, ductwork and control enclosure.

To receive a detailed quotation for your application complete the "Request for Quotation Data Sheet" found on the reverse side of our catalog index.

(Conveyor speed of ___ feet per hour) x (Dwell time of __ hour) = (Heat zone length of______ feet)

STANDARD EQUIPMENTAll Models

- 230 volts, 3-phase, 50Hz- Other electrical characteristics available

Vertical downward air flow between full coverage ductwork above and below conveyor belt. Other air flow patterns available. Trilite Green enamel painted aluminized steel exterior.

Electric Models

Each features completely wired, side access control panel enclosing terminals for incoming power, temperature controllers, push buttons and pilot lights. Motor starter and heating element contactors electrically interlocked to shut off heaters if power to blower is interrupted and to permit operation of blower without heat for cooling. Incoloy sheathed tubular heating elements.

Gas Models

- 1, 000 BTU natural gas at 6" water column pressure;- Other gas characteristics availableControl panel as on electric models. Automatic preignition purge period and push button electric ignition contributes to ease of operation. Modulating gas burner is protected with electronic flame safety relay.

Electric Tempering Furnace can be combined with Electric Bench Furnaces or Inert Atmosphere Bench Furnaces to produce a space saving, over and under, heat treating and tempering furnace combination. The top chamber with its manually operated vertical lift door can be selected from among four sizes of 11000F and 12000C Bench Furnaces described on Bulletin BF-710 or Inert Atmosphere Bench Furnaces described on Bulletin BF-720. The Quench Tank is a free standing unit available with electric heat.

STANDARD FEATURES

Controls

- Digital, microprocessor based, thermocouple actuated, indicating temperature controller- On-off heat switch- Easy-to-see pilot light

Safely Equipment

• Adjustable, thermocouple actuated, manual reset excess temperature controller
• Separate heating element control contactor
• Door interlock switch turns off power to heating elements and blower when door is opened; restores power when door is closed

Construction

• Recirculation blower located in back wall
• Heavy gauge aluminized steel cabinet with enamel finish
• Brushed stainless steel control panel face
• Designed to support heat treating furnace
• Well insulated, side-hinged door
• High temperature alloy heating elements supported by rugged ceramic plates
• Energy-saving lightweight ceramic fiber insulation reduces operating costs
• Fast heat-up
• Heating elements located on sidewall and roof for excellent temperature uniformity throughout workspace
• Ceramic hearth tray
• 1 year limited warranty

Optional Quench Tank

• Expanded metal loading basket
• Use with water, oil or synthetic solutions
• HP direct subway grate basket support
• Optional electric heat

All equipment fully assembled and individually factory tested

Electric Models

Safety devices as listed on the front of this bulletin. Heating element contactors electrically interlocked with door to shut off power to heaters as door opens and restores power when closed. High temperature alloy coiled wire-heating element supported in alloy rack, Heating elements located in heat chamber upstream of the recalculating blower. Exhaust outlet 4'" diameter.

Gas Models

- 1, 000 BTU natural gas at 2-psig pressures. 1" NP inlet up to 800, 000 BTU/HR - Other gas characteristics availableSafety devices as listed on the front of this bulletin. Automatic preignition purge period and push button electric ignition contributes to ease of operation. Modulating gas burner fires into chamber upstream of the re-circulating blower. Gas burner protected with electronic flame safety relay. Door interlock switch drives main burner to low fire when door is opened and restores control when door is closed. Exhaust outlet 6" diameter.Furnace shell is made of 3/16" thick steel plate reinforced with structural steel. Doorsill constructed from firebrick to protect furnace during loading. Stainless steel grid at bottom of workspace to distribute loading. Soft insulation on door provides an excellent heat seal by pressing against the vestibule refractory and " thick steel front plate. Exterior painted with Trilite Green enamel. Each features completely wired side access control panel assembled on the furnace enclosing terminals for incoming power, temperature controllers, push buttons and pilot lights.

Electric Door

Door pivots upward above furnace, clearing front for easy loading. In the closed position, full door weight seats door firmly against furnace face. Structural steel pivot arms are supported at furnace sidewalls by bearings and connected to a heavy-duty electro-mechanical actuator. The door is controlled by a switch at the furnace control panel.

Air Door

Door rises vertically in front of the furnace hanging from heavy-duty roller chain, sprockets, shaft and pillow block bearings. In the closed position, rollers at the sides of the door engage support brackets to force the full door weight against the furnace face. Large diameter air cylinder rotates support shaft to lift the door. The door is controlled by a manual air valve with supply filter, lubricator and regulator.

ADDITIONAL EQUIPMENT AVAILABLE

• Programmable Temperature Controller, microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller.PTC3
• Recording Thermometer, thermocouple actuated, 24-hour, 10" diameter circular chart used in conjunction with standard controller.RT
• Programmable Recording Temperature Controller, microprocessor based, thermocouple actuated, digital display, 24-hour, 10" diameter circular chart, in lieu of standard controller .PRTC3
• Digital Timing System, incorporated into standard temperature controller, 99 hour 59 minute range, starts timing at temperature set point and shuts down furnace at end of set time .DTS3
• Shut Down Timer, with continuous "hold" feature 1, 5, 10 or 30 hour range.SDT
• Batch Timer, for uniformly timing batch operations. Continuous alarm with door interlock; alarms at end of preset time period until door is opened or timer reset. 1, 5, 10 or 30 hour range. BT
• Inert Atmosphere Construction, available on electric furnaces only, includes continuously welded furnace shell, inert atmosphere gas inlet and outlet, sealed terminal boxes, high temperature door gasket.IAC
• Inert Atmosphere Inlet Piping, complete with indicating flow control and gas valve. Specify atmosphere.IA

ELECTRICHEAT TREATINGFURNACES

SAKAV standard 11000C and 12000C furnaces provide for a variety of heat treating applications. Precision microprocessor based temperature controls and energy saving insulation maximize the cost efficiency and performance of these rugged units. Five sizes from 0.44 to 2.0 cubic feet. ideal for general purpose heat treating of tools, dies and other parts

STANDARD FEATURES

Controls

- Digital, microprocessor based, thermocouple actuated, indication temperature controller - On- off heat switch - Easy to see pilot light

Safety Equipment

• Adjustable, thermocouple actuated, manual reset excess temperature controller
• Separate heating element control contactor
• Door interlock switch turns off power to heating elements when door is opened restores power when door is closed

Construction

• Heavy gauge aluminized steel cabinet with enamel finish
• Brushed stainless steel control panel face
• Gas spring assisted manually operated vertical lift door
• Door hot side faces away from operator at all times
• High temperature alloy wire heating elements supported by rugged ceramic plates or Fibers.
• Energy saving lightweight ceramic fiber insulation reduces operating costs
• Fast heat -up
• Heating elements located on sidewall and roof for excellent temperature uniformity throughout workspace
• Ceramic hearth tray
• 1 year limited warranty

Every furnace fully assembled and individually factory tested

ADDITIONAL EQUIPMENT AVAILABLE

• Floor Stand, 26"High, heavy-duty steel cabinet shelf.FS
• Programmable Temperature Controller, microprocessor based, digital indicating, thermocouple actuated, in l ieu of standard controller .PTC3
• Recording Thermometer, thermocouple actuated, 24- hour, 10" diameter circular chart, used in conjunction with standard controller, includes floor stand to house recorder Floor stand cannot be used for storage. RT
• Programmable Recording Temperature Controller, microprocessor based, thermocouple actuated, digital display, 24 - hour 10" diameter circular chart in lieu of standard controller, includes floor stand to house temperature controller. Floor stand can to be used for storage .PRTC
• Digital Timing System, incorporated into standard temperature controller, 99 hour 59 minute range, starts timing at temperature set point and shuts down furnace at end of set time .DTS3
• Shut Down Timer, with continuous "hold" feature 1, 5 10 or 30 hour range.SDT
• Batch Timer, for uniformly timing batch operations. Continuous alarm with door interlock alarms at end of preset time period until door is opened or timer reset 1, 5 10 or 30 hour range . BT
• Alloy Hearth Tray 7" x 11" .AH 812 11"x 11".AH 1212 11" x 23" .AH 1224
• Quench Tank 22" wide x 22" long x 26" deep, 40 gallons capacity with HP motor direct driven mixer, work basket and subway grating basket support for 115 or 230 /1/60. QT
• Quench Tank Electric Heater, with temperature control.QTH