A typical furnace system consists of the following:
- A Basic Furnace Assembly
- Furnace Chamber Assembly
- Entry and Exit Spools
- Heating Elements
- Heat Shields
- Power Supply
- Temperature Control Instrumentation
- Process Gas System
- Gas Purifier, or Purifier with Oxygen Monitor
- Options and Spares
Basic Furnace Assembly
The Basic Furnace consists of an all stainless steel chamber, inside of which is the resistance heated Heat Zone. Heat Zone components are readily accessible for inspection or maintenance. The 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, Process Gas, etc. Centorr Vacuum Industries’ proprietary Rotatable Sight Window is included as standard equipment.
Water-cooled spools are provided at the entry and exit to the furnace. The flow of process gas from the furnace center toward the outside end of each tunnel serves to keep air from entering the heat zone and also to carry with it any impurities which may evolve during heating.
Power Supply System
Power Supply Systems consist of Silicon Controlled Rectifier Power Controller (Saturable Core Reactors also available) with Current Limit, Step-down 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.
Utility requirements are given in KVA at customer’s Primary Voltage, Single or Three Phase, and 50 or 60 Hertz.
Temperature Control Instrumentation
Centorr Vacuum Industries can supply from the simplest Manual Power control to the most elaborate instrumentation. This furnace is generally supplied with a temperature Indicator-Controller working in conjunction with a W/Re Thermocouple. A Temperature Recorder can be supplied optionally.
Process Gas System
Process Gas System consists of three flow meters each with valve, and low gas pressure interlock with panel-mounted alarm.
Gas Purifier, or Purifier with Oxygen Monitor
It is imperative that the process gas be extremely pure. For this reason we recommend our Model 2G-100-SS Gas purifier with O2 Monitor
Options and Spares
Various options and spares are available to suit each application.
NOTE: Chamber mounting brackets and wire feed and take-up spools and mechanism are by customer.