International Syalons has supplied world leading advanced silicon nitride and sialon products to the molten metal handling industry for many years, utilising the outstanding chemical stability of our materials, particularly in contact with non–ferrous molten metals.
The exceptional heat and corrosion resistant properties of advanced silicon nitride and sialon ceramics have been utilised in a range of foundry products for non–ferrous molten metal handling. These include thermocouple protection sheaths, heater and riser tubes, ladles and other foundry products.
Syalon 101 has excellent thermal shock resistance as a result of its high strength, toughness and thermal conductivity. It is thermally very stable and extremely resistant to corrosion by most non–ferrous metals, particularly aluminium and zinc. There is therefore no contamination of the melt. In addition, Syalon 101 is non–wetting for most non–ferrous metals, making it very resistant to build up of dross and therefore very low maintenance.
These unique properties give sialon a significantly better service life over conventional products such as chill cast iron, silicon carbide and aluminium titanate, for example. Our products are used extensively in both primary and secondary aluminium smelters and in the holding furnacess and filter boxes of cast houses. Examples of the foundry products we manufacture include:
Syalon 101 thermocouple protection sheaths are becoming the industry standard in non–ferrous metal foundries. They possess outstanding thermal shock resistance, are non–wetting and suffer no degradation in contact with aluminium and its alloys.
The benefits of Syalon 101 for thermocouple sheaths applies equally to heater and riser tubes. International Syalons manufacture a wide array of heater and riser tubes to suit most requirements in the non–ferrous molten metal foundry business.
Silicon nitride and sialon riser tubes are used for precise, large capacity, high and low pressure die casing of aluminium products in many foundries and cast houses as they offer a greatly increased service lifetime over low cost refractories.
Sialon ceramic equipment is often used for handling non–ferrous metals, such as aluminium alloys and zinc. Sialons are alloys of silicon nitride and are characterised by excellent thermal and chemical stability, making them ideal for these applications.
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Sialon and zirconia provide the high temperature strength and non-wetting properties necessary for metal casting, extruding, and welding.
Technical ceramics are characterised by excellent mechanical strength and hardness, and are widely used in extreme wear applications.
Silicon nitride offers excellent corrosion and thermal resistance and are ideal materials for use in the chemical and process industries.