Sialon Riser Tubes

What are Riser Tubes?

Riser tubes feed molten metal into a mold. Riser tubes ensure a steady and consistent flow of molten metal into the casting mold, preventing the formation of defects such as shrinkage and porosity. Riser tubes are typically made from Aluminium Titanate, Cast Iron or Sialon.

How Do Riser Tubes Work?

The operation of riser tubes in low-pressure die casting is relatively straightforward. The riser tube is submerged into the molten metal in the furnace or crucible. As the molten metal is drawn into the mold under low pressure, the riser tube acts as a conduit to ensure a continuous supply of molten metal into the mold cavity. This controlled filling process helps minimize defects and ensures the casting's integrity.

Key Advantages:

• High Temperature Resistance: Sialon is renowned for its exceptional thermal stability, withstanding temperatures well above 1200°C. This property ensures that sialon riser tubes remain durable and reliable in the extreme heat of molten metal.
• Wear Resistance: Sialon has excellent resistance to chemical corrosion, making it suitable for use with various alloys and molten metals. This resistance helps prolong the lifespan of the riser tubes, reducing maintenance costs.
• Low Thermal Conductivity: Sialon's low thermal conductivity minimizes heat loss during the casting process, ensuring efficient energy utilization and reducing operating costs.
• Dimensional Stability: Sialon maintains its shape and dimensions even when subjected to high temperatures and thermal cycling. This stability is essential for consistent casting results.
• Reduced Downtime: Sialon riser tubes require less frequent replacement compared to conventional materials, reducing downtime and increasing overall operational efficiency.

Applications:

Sialon riser tubes are crucial across various industries, including automotive, aerospace, electronics, and renewable energy, to ensure high-quality, defect-free low-pressure die casting of critical components.

Other sizes are available and tailor-made upon request.

All risertubes are with intregal flange (made from one piece). It is also possible to order with a steel flange.

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