12" x 12" x 12" Vacuum Furnace

Maximum Temperature:  
1300^o C

Internal Dimensions:        
12” high x 12” wide x 24” deep element-to-element

External Dimensions:      
74” high x 69” wide x 54” deep

Power Requirements:      
480 volts, 3 phase, 108 amps full load

Atmosphere:                      
High vacuum / Inert gas backfill to aid cooling

Applications:

·        Vacuum brazing

·        Vacuum sintering

·        Vacuum annealing

·        Vacuum de-gassing

·        High temperature vacuum research

·        MIM sintering

·        Standard one-year warranty

·        This furnace is in stock and comes with one day of test fire and training at our plant in Terryville, CT.

·        This entire unit is a totally enclosed, packaged, and assembled that is shipped as one piece, requiring only the water, gas, and power to be connected to the appropriate locations. All of the doors on this furnace can be locked to protect unauthorized personnel from coming in contact with the high voltage. These same doors are hinged and removable, if necessary, to provide easy access to all parts of the furnace.

·        This furnace is provided with four heavy-duty leveling legs that allow it to be placed exactly level for critical processes.

·        New Yokogawa UP550 digital programmable temperature controller with 30 programs and 300 segments (with three-year warranty). This unit provides .1^o resolution and is capable of controlling this furnace typically within 1-2 degrees. It can read out in either degrees F or degrees C. This controller has auto-tuning that makes tuning to a particular process quick and easy. It has an alphanumeric display that indicates the process profile, as well as when events in the program are turned on and off.

·        An optional feature to work with the UP550 is the Yokogawa Light Loader. It clips on the face of the UP550 and allows an interface to a computer to upload and download programs and modify the configuration of the controller.

·        New AutomationDirect Direct Logic 06 PLC programmer-controller for fully automatic operation with alphanumeric display to indicate furnace processing cycles. This furnace can be run with just the five push-buttons on the front of the alphanumeric display. This feature allows the furnace to be automatically warmed up to prepare for production, to automatically run production processes, to automatically shut itself down, and to store itself under vacuum. Comes with auto-manual station.

·        The AutomationDirect PLC comes with an auto-manual station that is key-accessed so it can only be used by authorized personnel. The switches on the auto-manual station allow valves to be turned on and off; allow the diffusion pump heat to be turned on and off; and, provide a means to operate the furnace manually for either special testing or diagnostics.

·        All new graphite rigid board hot zone – This vacuum furnace has 2” of new rigid board graphite insulation.

·        All new graphite heating elements

·        Four-sided heating elements running front-to-back for optimum temperature uniformity. Each heating element is easily replaceable. There are two graphite nuts holding each heating element in place.

·        All new graphite hearth plate: Runs the length of the furnace, front-to-back. It can easily support in excess of 50 pounds, evenly distributed.

·       Mechanical vacuum pump. This pump has been remanufactured and has a new charge of mechanical pump oil installed in it. The mechanical pump is mounted on vibration isolators and attached to the furnace frame.

·       High-speed 6" diffusion pump. This pump has been remanufactured and has a new 480 volt heater and a new charge of diffusion pump oil installed in it.

·        All new self-contained feed and drain water manifolds are mounted on the furnace frame and accessible from the rear of the furnace. The furnace is completely water-plumbed with all-new hoses and fittings.

·        This furnace comes with a new chamber overtemperature-overpressure safety relief valve. The outlet of this valve is plumbed to a hose coming out the rear of the furnace.

·       Digital vacuum gauge. This gauge has two thermocouple inputs – one to monitor chamber pressure and one to monitor foreline pressure. It also has an ionization gauge to monitor high vacuum in the chamber. The thermocouple gauge tubes and ionization gauge tubes are new.

·        Thermocouple – This unit comes with a new inconel-sheathed dual Type “K” high temperature thermocouple probe to sense temperature in the furnace. Other probes are available for an additional charge.

·        Backfill gas – This furnace is equipped with metal lines that have been helium leak tested to 10^-9 scale to minimize any potential contamination that may come from contaminated backfill gases.

·        Digital high limit safety controller. This controller continuously monitors the temperature in the furnace and will automatically turn the furnace off if an overtemperature condition exists inside the furnace. It is settable to the nearest one degree over the entire operating range of the furnace. This controller works in conjunction with a new mechanical high limit safety contactor.

·        Wiring – All internal wires, fuses, motor starters, relays, and power supplies in this furnace are new.

·        New all copper main power transformer with manufacturer’s one-year warranty. The connection between the power transformer and the copper power feedthroughs bringing the heat to the heater elements is through new water-cooled power cables. These water-cooled power cables bring the power from the transformer to the heater elements efficiently, thereby minimizing energy consumption.

·        Phase angle fired SCR pack. This device precisely modulates the power required to keep the furnace at temperature. Comes with manufacturer’s one-year warranty.

·        We provide written operating procedures, complete detailed electrical schematics, and manuals for all instrumentation and controls on the furnace.

·        This unit is leak-tested with a helium mass spectrometer, with no detectable leak in the 10^-9 range. There is a built-in KF-25 leak test port that is capped that can be used to easily attach the furnace to a helium mass spectrometer leak detector.

·        Optional paperless datalogging chart recorder available for additional charge.

·        Optional remote diagnostics that allows real-time troubleshooting and diagnostics over a phone line available for additional charge.