Exothermic Neck Down Sleeves a high-performance feeder system designed to maximize directional solidification and minimize casting defects — especially in steel and complex iron castings.

Key Features:

• Neck Down Geometry
  • The narrowed bottom controls the feeding path and focuses molten metal into critical areas.
  • Ensures clean separation from the casting post-solidification.
• Exothermic Reaction Zone
  • Upon contact with molten metal, the sleeve ignites a controlled exothermic reaction.
  • This reaction generates intense localized heat, keeping the metal in the riser molten for a longer time.
  • Extends the feeding duration and enhances directional solidification.
• Open or Blind Top Options :
  • Open: Metal enters directly during pouring.
  • Blind: Closed-top, used for side risers or when no direct metal entry is needed.