High density calcium silicate board engineered for direct contact with molten aluminum. Non-wetting surface, superior machinability, excellent dimensional stability — ideal for launders, floats, spouts, transition plates, and holding furnace linings.
The aluminum industry operates with molten metal at temperatures exceeding 700°C, requiring materials that are non-wetting, chemically stable, and mechanically strong. Traditional refractories often fail due to aluminum penetration, oxidation, or mechanical wear.
HR RHINO high density calcium silicate boards are specifically engineered for direct molten aluminum contact, with densities ranging from 800-1200 kg/m³ and options for glass fiber or carbon fiber reinforcement. Based on high-purity xonotlite, our boards resist aluminum penetration while maintaining structural integrity under extreme conditions.
Key performance advantages include non-wetting with molten aluminum, excellent machinability for complex shapes (floats, spouts, transition plates), dimensional stability, and long service life — making our boards the preferred choice for aluminum smelters, die casters, and continuous casting operations worldwide.
Six critical applications in the aluminum production and casting process where HR RHINO high density calcium silicate boards deliver superior performance.
Launder systems that transport molten aluminum between furnaces and casting stations require non-wetting, thermally stable linings. Our high density boards resist aluminum penetration and maintain smooth metal flow with minimal heat loss.
Continuous casting and sheet casting operations rely on precision-machined floats, spouts, and casting tips. Our CNC-machinable high density boards can be shaped into complex geometries with tight tolerances.
Billet and ingot casting systems use transition plates and hot-top rings in direct contact with molten aluminum. Our products provide thermal gradient control and prevent premature solidification at critical transition points.
Holding furnaces maintain molten aluminum at precise temperatures before casting. Our boards serve as hotface linings, dams, and launders, providing both thermal insulation and resistance to aluminum attack.
LPDC systems use sprue bushes, riser tubes, nozzles, and feeder box liners. Our carbon fiber reinforced 800 kg/m³ grade offers excellent thermal shock resistance for repeated casting cycles.
Our high density boards are machined into collars, gaskets, and pipe support rings used throughout the aluminum plant for sealing, insulation, and structural separation between hot and cold zones.
Engineered performance for direct molten aluminum contact applications.
Molten aluminum does not wet or bond to the board surface, preventing buildup, contamination, and thermal bridging.
CNC machinable to tight tolerances. Complex shapes like floats, spouts, and custom casting components produced easily.
Compressive strength up to ≥23 MPa and flexural ≥15 MPa. Handles mechanical stress of molten metal flow and handling.
Carbon fiber (800 kg/m³ N-17) or glass fiber reinforced grades for enhanced tensile strength and thermal shock resistance.
Resistant to molten aluminum chemical attack. No reaction with liquid non-ferrous metals under normal operating conditions.
OEM manufacturing available. Send your drawings for precision-machined parts to exact specifications.
Our signature high density board engineered specifically for direct contact with molten aluminum in smelting, casting, and transfer operations.
Features superior resistance to aluminum penetration, exceptional dimensional stability (≤0.16% shrinkage at 850°C), and high mechanical strength suitable for launders, troughs, and holding furnace internals.
View Product Details →High density product lineup for different aluminum industry applications from die casting to launder systems.
Flagship molten aluminum contact grade. Compressive ≥17 MPa, flexural ≥8.5 MPa, 1000°C.
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Ultra-high density for hot-top rings and transition plates. Compressive ≥23 MPa, max 1100°C.
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Rapid temperature cycling applications. Compressive ≥15 MPa, flexural ≥7.0 MPa.
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Structural insulation for holding furnaces and launders. Compressive ≥14 MPa.
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Die casting sprue bushes and nozzles. Compressive ≥21 MPa with carbon fiber reinforcement.
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General purpose 800 kg/m³ grade. Compressive ≥11 MPa, HD 60 hardness.
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