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Batch Atmosphere Processing

National Metal Processing

About the process:

Used to process one load/batch at a time under a protective atmosphere. Process involves controlled heating using a neutral or carburizing atmosphere and controlled cooling. Parts can be arranged in baskets or racks to prevent distortion.



  • Furnaces feature precise carbon control
  • Versatility of either carburizing, carbonitriding, or neutral hardening processes
  • Suitable for either parts requiring heavy case depths or long cycle times
  • Provides flexibility in processing lower volume or larger size parts requiring special handling or fixturing
  • Ability to combine small lots offers cost savings to customers



  • 3 Surface Combustion Allcase batch integral quench furnaces