Zirconia ceramic foam filter for steel castings filtration

Zirconia-based ceramic foam filter designed for the filtration of molten steel and steel alloys at temperatures up to 1700 °C. Engineered for foundry and steelmaking applications where removal of non-metallic inclusions and consistent metal quality are critical, this foam filter delivers reliable, high-efficiency filtration for high-alloy and large-scale castings.

Key features

• High temperature capability: rated for molten steel and alloys up to 1700 °C.
• Zirconia composition: provides excellent refractory stability and durability in aggressive molten-metal environments.
• Open-cell foam structure: effective capture and retention of non-metallic inclusions while maintaining good metal flow characteristics.
• High filtration efficiency: reduces inclusion levels and improves casting quality.
• Suitable for high-alloy steels: recommended where low inclusion counts and high metallurgical quality are required.
• Preheatable: filters can be preheated for investment casting and related processes to avoid thermal shock and improve performance.

Applications

• Filtration of molten steel and steel alloys in foundries and steelmaking facilities
• Large-scale iron and steel casting operations
• High-quality and high-alloy steel production where inclusion control is essential

Benefits for operations

• Improved final casting cleanliness and mechanical properties through reduced inclusion levels
• Consistent and reliable filtration performance across pours
• Supports quality-critical casting processes such as investment casting and production of high-alloy steels

Typical supply considerations

• Available in foam format tailored for molten metal filtration (specify desired dimensions, porosity grade and mounting configuration when ordering)
• Preheating prior to service is recommended for investment casting applications to reduce thermal shock and help ensure optimal performance