Series 19 High Temperature Vacuum or Controlled Atmosphere Refractory Metal Heat Zone Furnace

55 Northeastern Blvd,

Nashua, NH 03062

sales@centorr.com

Ph: 603-595-7233

Toll free: 800-962-8631

Fax: 603-595-9220

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Series 19
High Temperature Vacuum or Controlled Atmosphere Refractory Metal Heat Zone Furnace

Brazing
Melting
Sintering
Heat Treating
Ceramic Firing
Degassing

Features

Extremely convenient to load/unload
Clean, compact, vacuum tight construction
Use in vacuum, inert, nitrogen, and hydrogen atmospheres
Low thermal mass - rapid heating and cooling
Accurate temperature control

The CENTORR Series 19 High Temperature, High Vacuum or Controlled Atmosphere, Cold Wall, Refractory Metal Heat Zone Furnaces are extremely convenient to operate. The heat zone housing is raised hydraulically as a unit on a dovetail slide thus exposing the stationary work support hearth for loading or unloading. This furnace is particularly well suited to applications which require maintenance of precise positioning or assembly of the work during firing.

A furnace system typically consists of the basic furnace chamber assembly, the high vacuum system or evacuation system, the process gas system, the power supply, the temperature control instrumentation, and the furnace mounting system.

The unit is ready to operate as soon as power is connected to the main circuit breaker, process gas is supplied, and water inlet and drain connections are made.

Heat Zone Size	6.5" Dia. x 12" High to 14" Dia. x 24" High
Temperature	Up to 3000°C
Pressure Vacuum	2 PSI to 10^-6 Torr
Interlocks	Chamber is immobilized if a. heat zone is energized, or b. Chamber is pressurized.

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. A hearth is provided for work support.

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 is included as standard equipment.

High Vacuum System
Standard high vacuum systems consist of high vacuum elbow, diffusion pump with cold trap, mechanical pump, manual, semi-automatic, or full automatic valve system, all copper manifold, Viton "O" rings, and combination ion gauge & two station thermocouple gauge vacuum instrument.

Evacuation System
For operation in the 10-50 Microns range of vacuum or for evacuation prior to backfilling with desired process gas, 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
The standard process Gas System consists of Vacuum tight Gas Inlet Valve and Relief Valve, Bourdon type Pressure-Vacuum Gauge and Manifold. Process gas systems capable of handling multiple gases, including gas mixing, mass flow control, and gas analysis are available as options.

Power Supply System
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. Power supply systems employing saturable core reactors are also available on request.

Utility requirements are given in KVA at customer's Primary Voltage, Single or Three Phase, and 50 to 60 Hertz.

Temperature Control Instrumentation
Centorr can supply control circuitry ranging from the simplest Manual Power Control to the most sophisticated intelligent 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.

Furnace Mounting Assembly
The furnace chamber is mounted on a steel table.