Alumina foam ceramic filter plates are very important in improving the quality of smelted aluminum alloy melts. It greatly affect the subsequent processing performance and the quality of the final product. Therefore, all countries in the world attach great importance to the purification of aluminum melt. AdTech ceramic foam filters (CFF) have substantial strength at ambient and molten aluminium temperatures. AdTech filters are durable, have high thermal conductivity and are resistant to chemical attack. They are useful to remove inclusions in aluminium gravity casting, pressure die casting, low-pressure, and high-performance sand foundries.
Alumina Foam Ceramic Filter Advantages
- Excellent strength and thermal properties
- Resistant to molten aluminium attack
- Available in various sizes and grades
- Reduced scrap
- Better surface finish of castings
- Increased metal quality
Reasons for Aluminum Liquid Pollution
There are many reasons for aluminum pollution. On the one hand, in the melting process, aluminum is exposed to the furnace atmosphere in a molten or semi-molten state. The molten aluminum is susceptible to oxidation, easy to react with water vapor to absorb hydrogen. And then easy to form various forms of non-metallic slag (lining fragments, chlorides, carbides in the flux) and coarse intermetallic compound particles. On the other hand, some of the wastes that make up the charge bring some non-aluminum impurities in the circulation process.
Because the waste comes from the process wastes and wastes in each process of our factory and the wastes outside the factory. Therefore, the route of impurities is different, the composition is complex, and the quality is also poor. These impurities often cause bubbles and inclusions in the slab, which seriously affect the purity of the metal melt. And further affect the processing performance, mechanical properties, corrosion resistance, and product appearance quality.
Alumina foam ceramic filter plates can effectively remove all kinds of inclusions with a fineness of the micron level in aluminum water. So that the aluminum water becomes a steady laminar flow, which is beneficial to filling. AdTech ceramic foam filter has a unique mullite-corundum structure, good mechanical strength and chemical stability, excellent resistance to aluminum erosion performance. Strict control of the pore size and through-hole rate can obtain a stable filtering effect. AdTech foam ceramic filter plate is sealed with ceramic fiber gasket, which helps the sealing of the filter plate in the filter box.