Highly Exothermic Neck Down Sleeves which are a specialized type of feeder sleeve used in foundry casting to enhance feeding in specific mold configurations

Key Features:

• Oval Shape
  • Ideal for castings with space constraints or non-circular mold profiles.
  • Provides a wider contact area for broader feeding without increasing sleeve height.
  • Better utilization of mold cavity space compared to round sleeves.
• Neck Down Configuration:
  • A reduced diameter section at the base of the sleeve regulates metal flow.
  • Encourages directional solidification and clean break-off from the casting.
  • Provides better thermal control at the casting-sleeve interface
• Highly Exothermic Composition:
  • Generates intense heat upon contact with molten metal.
  • Prevents premature freezing of the metal in the riser.
  • Extends feeding duration → improved casting integrity.
• Shape: Usually cylindrical above the neck, with a tapered lower section that inserts into the mold cavity.