In the modern foundry industry, molten metal filtration technology has become an indispensable key link to ensure the quality of castings. As a professional manufacturer and supplier in the field of foundry refractory materials, SEFU, with its years of technical accumulation, provides global foundries with a full range of molten metal filtration solutions to help customers significantly improve the yield and mechanical properties of castings.
Non-metallic inclusions in molten metal are one of the main factors leading to casting defects. SEFU’s advanced filtration system can effectively intercept oxides, slag and other impurities in molten metal to ensure that only pure molten metal enters the mold cavity. Our foam ceramic filters are made of high-quality silicon carbide, alumina and zirconium oxide materials, with excellent high-temperature stability and chemical inertness, and can maintain structural integrity even at extreme pouring temperatures.
Diversified products to meet different casting needs
For the special requirements of different metal castings, SEFU provides a comprehensive range of filtration products:
- Foam ceramic filters: The opening rate is as high as 85-90%, and a variety of pore sizes are available from 10ppi to 60ppi, suitable for various casting scenarios from aluminum alloys to high-temperature alloys. Silicon carbide is particularly suitable for cast iron applications, while zirconium oxide is designed for high-temperature cast steel.
- Straight-hole honeycomb ceramic filters: The unique straight-through channel design achieves efficient filtration while minimizing flow resistance, making it an ideal choice for large castings and high-demand precision castings.
- Customized fiberglass mesh filters: It can be processed into various cap-type structures according to customer needs, providing cost-effective filtration solutions for low-melting-point metal castings such as aluminum alloys.
SEFU: A reliable manufacturer and supplier of casting filters
The core advantage of SEFU filters lies in our strictly controlled material formula and precision manufacturing process. Each batch of products undergoes strict quality inspection to ensure uniform pore distribution and stable filtration performance. Our engineering team is well versed in the characteristics of different casting processes and can recommend the most suitable filter type and installation plan to customers to help optimize the entire casting system design.
In aluminum alloy casting, the use of SEFU filters can reduce more than 80% of inclusion-related defects; in cast iron applications, our filters can effectively reduce the scrap rate caused by slag inclusions; and for demanding steel castings, SEFU high-temperature filters provide a reliable solution.
Serving the global foundry industry
SEFU always insists on driving product upgrades with technological innovation. We not only provide standardized filtration products, but also develop customized solutions according to customers’ special process requirements. From laboratory testing to mass production support, our technical team is fully involved to ensure that each filter can perform at its best in actual production.
Choosing SEFU metal filtration solutions means choosing higher casting quality, lower scrap rate and more stable production efficiency. We sincerely invite global foundries to contact us to discuss how to improve your product quality and market competitiveness through advanced filtration technology.