As the casting process develops towards precision and large-scale, the innovation of filtration technology has become one of the key factors in improving the yield of castings. As an important demand for metal liquid purification in this casting field, the cap-shaped fiberglass mesh filters provide a molten metal filtration solution for precision casting through its unique three-dimensional structure design. This special form of the casting filter medium not only has the basic functions of a flat filter, but also realizes the multi-dimensional purification of molten metal.
When the high-temperature metal flows through the mesh filters, the guiding effect of the dome shape can effectively adjust the flow velocity distribution. At the same time, the high temperature resistance and fine pore structure of the glass fiber material itself ensure continuous and stable filtration efficiency throughout the casting process. This design is particularly suitable for high-end application scenarios such as aviation engine parts and automotive power systems that have strict requirements on the internal quality of castings.
Structure & Material Features of Cap-Shaped Fiberglass Mesh Filters for Casting
Three-dimensional cap design:
The dome structure (height 20-50mm) fits tightly with the inner wall of the pouring cup to prevent the molten metal from flowing around;
The bottom reinforcement rib design improves impact resistance and withstands the instantaneous impact of the molten metal.
Material composition:
Alkali-free glass fiber (SiO₂ content ≥96%) is woven orthogonally in two directions;
The proprietary coating has a temperature resistance of up to 1600°C, reducing fiber embrittlement at high temperatures.
Core functional advantages
- Impurity interception: It can capture 10-300μm impurities, which is more efficient than the flat filter;
- Flow field optimization: The dome diversion effect allows the molten metal to transition smoothly and reduces the air entrainment defects caused by eddy currents;
- Customized adaptability: It supports non-standard size customization with a diameter of 50-200mm, and is suitable for special processes such as lost foam and low-pressure casting, and is suitable for various automated mechanical filtration equipment.
Typical application scenarios
Automotive field: casting thin-walled parts such as turbocharger housings and cylinder heads to reduce shrinkage rates;
Heavy industry field: avoiding macroscopic inclusion defects in large valve and pump castings.
As an important innovation in the casting field, the cap-shaped glass fiber filter effectively solves the limitations of traditional flat filters in metal liquid purification through the combination of three-dimensional structural design and high-performance materials. Its core value is not only reflected in the improvement of impurity interception efficiency, but also in the significant improvement of the internal quality of castings through fluid optimization. It has been successfully applied to high-end fields such as aerospace and automobile manufacturing.
SF-Foundry Customized Service
SF-Foundry is a foundry filter manufacturer and supplier with decades of experience in molten metal filtration and purification. It can recommend the optimal aperture and wall thickness based on the customer’s casting weight and metal type; it can also customize foundry filters of various shapes according to customer needs. Choose SF-Foundry to be your reliable supplier.
Email: info@sf-foundry.com
WhatsApp: +8613785803358