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> Centorr 2400C graphite vacuum furnace working
Centorr 2400C graphite vacuum furnace working
Graphite Hot Zone Measuring 2.4" dia x 8" high. There is also a Graphite Retort that if used will make hot zone 1.7" diam.
Here is some info I found on the web for the Centorr Series 10 Vacuum Furnace:
* Efficient, inexpensive to operate
* Uncomplicated design, easy to operate
* Clean, compact, vacuum tight construction
* Use in vacuum, inert, reducing or oxidizing atmospheres
* Good accurate temperature control
The Centorr Series 10 High Temperature Vacuum or Controlled Atmosphere, Cold Wall, Graphite Tube Furnaces are simple and easy to operate.
A furnace system typically consists of the Basic Furnace Chamber Assembly, the Evacuation System, the Process Gas System, the Power Supply, the Temperature Control Instrumentation, and the Furnace Mounting System.
These furnaces are built having Effective Heat Zone sizes of 2.4" ID x 4" ID to 14" Long or 4" ID x 6" to 16" Long, and capable of operating 2750 C in Vacuum, in Inert Gas, Nitrogen (or in Reducing or in Oxidizing Atmospheres with Muffle Tube Kit).
The Evacuation Kit is capable of attaining 10 - 50 Microns; the Furnace Chamber may be backfilled to 2 PSIG.
The Furnace chamber is usually mounted on a stand with the Evacuation System located behind for maximum efficiency. The Power Supply / Control Console are also located as close as possible to the Furnace Chamber.
The Furnace is ready to operate as soon as power is connected to the main circuit breaker, and water inlet and drain connections are made.
Basic Furnace Chamber Assembly
The basic furnace consists of a double wall all stainless steel, water jacketed chamber containing the heat zone. The heat zone is resistance heated. The heating element is made of refractory metal. The heat shields are also all metal. Heat zone components are easily accessible for inspection or maintenance.
The entire inside of the furnace chamber is designed to conform to the best high vacuum practice. Particular attention is given to the choice of heat zone materials and to surface finishes. Ports are provided for sighting, thermocouples, evacuation, inert gas inlet and exit, gauges, etc. Centorr's proprietary rotatable sight window with gas support is included as standard equipment.
Loading is done through easily opened lids at either end of the Furnace Chamber. Lids are held in place by Screws which permit operation to slightly above ambient pressure.
For operation in the 10 - 50 Microns range of vacuum or for evacuation prior to backfilling with Inert Gas or Nitrogen, we include an Evacuation System. This includes a Mechanical Vacuum Pump, Vacuum Valve, and Manifold. Line Filter ahead of the vacuum pump, and Thermocouple type Vacuum Instrument are optionally available.
Process Gas System consists of Vacuum tight Gas Inlet Valve and Relief Valve, Bourdon type Pressure-Vacuum Gauge and Manifold.
Power Supply Systems consist of Silicon Controlled Rectifier Power Controller (Saturable Core Reactors also available) with Current Limit, Stepdown Transformer, Circuit Breaker, Contactor, Control Transformer, Ammeter, Voltmeter, Push Buttons, Indicator Lights, Water Interlocks, all completely wired and packaged in an attractive floor standing cabinet.
Temperature Control Instrumentation
Centorr can supply control circuitry ranging from the simplest Manual Power Control to the most elaborate Instrumentation. This can include Automatic closed loop control utilizing Thermocouples, Power Transducers, or Optical Pyrometers for sensing; and incorporating Indicators-Controllers, Recorders, and Programmers. Various types of Micro-Processor Programmers are now available and extremely popular.
The furnace chamber is mounted on top of a cabinet, either rigidly attached or simply resting on it. It can also be mounted on a stand completely in the open. It may be oriented Vertically, Horizontally, or at any desired angle. The Purge Port serves as its mounting point from which it may be swivelled without detaching from the evacuation system.
