HJN

CRM Group has developed a multi-purpose breakthrough casting technology which is currently under industrial implementation: the HJN (Hollow Jet Nozzle). It enables closely controlling the structure of the metallic product, and more precisely allows:

  • Reduction of central segregation
  • Refinement of the solidification structure
  • Modification of the steel composition during casting sequence
  • Improvement of addition yields for easily oxidable elements
  • Casting new steel grades such as composite steels with addition on exogeneous particles or innovative steels with variable properties along product thickness

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HJN Principle