In modern casting production, defects such as non-metallic inclusions are a major source of scrap and significantly reduce foundry profitability. In recent years, rising pig iron prices and advancements in synthetic casting technologies have led many foundries to adopt scrap metal—including scrap steel and iron—as a cost-saving alternative. However, these materials often contain excessive sand and are insufficiently cleaned (e.g., not fully shot-blasted), leading to high slag formation during smelting. Moreover, the complex and varied sources of scrap metal increase the risk of contamination by non-metallic inclusions, resulting in casting defects such as slag inclusions, porosity, and gas holes. These challenges severely impact casting quality and complicate defect tracing throughout the production cycle.

Ceramic foam filtration technology has advanced significantly since its introduction in the 1970s. Over the decades, materials such as silicon carbide (SiC), zirconia (ZrO₂), and alumina (Al₂O₃) have been developed to serve a wide range of applications—from filtering molten aluminum to cast iron, copper alloys, and steel. Among these, silicon carbide ceramic foam filters have proven especially effective in processing gray cast iron, ductile iron, bronze, and other non-ferrous alloys.Silicon carbide ceramic foam filters are a reliable and modern solution designed to effectively remove impurities, non-metallic inclusions, and trapped gases from molten metal during casting. This filtration results in cleaner microstructures, enhanced wear resistance, and greater dimensional stability in finished parts. By improving metal purity, these filters contribute to higher-quality castings and more efficient, reliable foundry operations.

Today, silicon carbide ceramic foam filters are widely used across automotive components, diesel engines, compressors, wind turbine castings, and high-precision machine tools. These high-demand applications require superior casting quality, which these filters help achieve.

Xinda's silicon carbide ceramic foam filters offer high porosity and low density, enabling efficient slag and inclusion removal while maintaining excellent flow rates. By reducing casting defects and improving material performance, our filters play a crucial role in enhancing casting quality, lowering scrap rates, and boosting overall profitability for our clients.