CARBURIZING

  • Gas Carburizing
  • Gas Nitriding
  • Gas Nitriding
STRAIGHT PUSHER TYPE
  • Traditional case-hardening process in which carbon is dissolved in the surface layer of a low-carbon steel at a temperature sufficient to render the steel austenitic, followed by quenching and tempering to form martensitic microstructure.
  • Carbonitriding hardens surface of steel by diffusing carbon and nitrogen simultaneously into steel in carburizing atmosphere with ammonia gas at around 850C lower than typical carburizing temperature.
  • It offers several advantages over carburizing, including low distortion, bigger resistance to softening during tempering and fatigue strength.

HARDNESS PROFILE BY CARBON CONTENT

EXPECTED PROPERTY

  • + Enhanced Wear & Shock resistance
  • + Uniform case depth & Easy control
  • + Carbonitriding
  • - Less distorsion with lower process temp
  • - Lower carbon steel(plates) enable

APPLICATION

  • + Automotive parts
  • + Industrial parts
  • + Ship & aircraft parts
 
STRAIGHT PUSHER TYPE
  • Traditional case-hardening process in which carbon is dissolved in the surface layer of a low carbon steel at a temperature sufficient to render the steel austenitic, followed by quenching and tempering to form martensitic microstructure.
  • Carbonitriding hardens surface of steel by diffusing carbon and nitrogen simultaneously into steel in carburizing atmosphere with ammonia gas at around 850℃ lower than typical carburizing temperature.
  • It has several advantages such as low distortion, bigger resistance of softening during tempering, and fatigue strength over carburizing.

HARDNESS PROFILE BY CARBON CONTENT

EXPECTED PROPERTY

  • + Enhanced Wear & Shock resistance
  • + Uniform case depth & Easy control
  • + Carbonitriding
  • - Less distorsion with lower process temp
  • - Lower carbon steel(plates) enable

APPLICATION

  • + Automotive parts
  • + Industrial parts
  • + Ship & aircraft parts
 
  • Gas Quenching
  • Oil or Salt Quwnching
  • Non-equilibrium, boost-diffusion carburizing process in which steel being processed is austenitized in a rough vacuum, carburized in a partial pressure of hydrocarbon gas, diffused in rough vacuum and then quenched with gas.

HARDNESS PROFILE BY CARBON CONTENT

Fatigue strength comparison test shows 15% improvement on SNCM23H when vacuum carburized.
  • Vacuum Carburing
  • Gas Carburizing

EXPECTED PROPERTY

  • + No oxidation layer
  • + High density carburazing
  • + Enhanced fatigue strength
  • + Clean(bright) product
  • + Easy carburizing in small holes
  • + Clean environment

APPLICATION

  1. + Automotive parts
  2. + industrial parts
  3. + ship & aircraft parts
  4. + Tool parts(SKD, SKH etc.)
  5. + Brazing