Sintering Furnaces

Abbott Furnace Company manufactures continuous belt sintering furnaces used in the powder metal industry.  Sintering is a heat treatment applied to a powder compact in order to impart strength and integrity. The temperature used for sintering is below the melting point of the major constituent of the Powder Metal material.

Abbott Furnace Company designs and builds sintering furnaces around our clients’ manufacturing needs – the time, temperature and atmosphere requirements for their specific product manufacturing process.

Sintering Furnace Features:

Alloy or Ceramic Muffle

  • Muffle to help direct, control and reduce atmosphere flow.
  • Incorporates a silicon carbide muffle.
  • This ceramic muffle is guaranteed for 5 years, if used under recommended operating procedures.

Gas or Electric Heating

  • We offer both types of furnace heating, depending on your needs.
  • Our gas heating systems incorporate Abbott’s “pulse-fire” technology.

Rapid Cooling System (VariCool)

  • Optional VariCool advanced cooling system combines both atmosphere cooling and conventional water-jacketed cooling technology into one convenient unit.
  • Unit can be added when the need for sinter hardening is present in a process.

Atmosphere Moisturizing

  • An optional moisturizing system can be used to alter sintering furnace dew points to ensure proper sintering conditions.

Quality Delube Processor (Q.D.P.)

  • Custom designed reaction/combustion chambers and a regulated atmosphere control, combined with our under-hearth heating system, assures that the delube process is completed efficiently and effectively.

High Temperature Ceramic Belt Furnace

  • High Temperature Ceramic Belt Furnace technology, propelled conventional continuous belt sintering from the 2100ºF range up to a temperature of 2350ºF.
  • Use of strong, ceramic link belt enables superior load bearing capacity, high throughputs and better net-to-gross heating ratio.

Monitoring & Control

  • We offer computerized monitoring and control systems that may supervise several different functions including: sintering furnace temperature, atmosphere flow, dew point, oxygen content, carbon control, belt speed, etc.
  • Abbott utilizes a variety of systems to perform these functions.
Abbott Furnace Company: Sintering Furnaces

Sintering Fundamentals

The production of powder metal components can be summarized in three steps: powder preparation, compaction and sintering.

Metal powder is first formed and blended to a desired chemical composition. During this step, a lubricant, such as wax, is added to help in the ejection of compacts from the molding press. The metal powder mixture is then put into a punch and die tool set of a molding press, and compacted to form a “green” compact.

Abbott Furnace Company: Sintering Furnaces

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