AdTech specially designed Aluminum Casting Ceramic Foam Filters are made of the basic raw material Aluminium Oxide. They are manufactured with porosities varying from 10 to 60 pores per inch (PPI). Also, combo sets are made in 20-30 PPI and other selections are possible. Different sizes and custom-made filters are manufactured according to specifications.
Aluminum Casting Ceramic Foam Filters Features:
– A homogeneous pore structure
– High surface strength
– Temperature resistant up to 1100°C
– Excellent resistance against chemicals used in foundries
Aluminum Casting Ceramic Foam Filters are an advanced product used for secondary refining. It has a porous structure network. With the continuous deposition of fluid inclusions, the size of the sieve holes and sieve holes becomes smaller and smaller, thereby improving the filtering effect.
The type of CFF metal filtration can be divided into deep bed filtration, filter cake filtration or mixed filtration. The efficiency depends on the pore PPI (pores per inch) of the filter material. It is also related to the size distribution of the removed particles. PPI refers to the plastic used to make foam ceramics. The number of pore boundaries encountered per inch can be found from the average value.
The filtration parameters of Ceramic Foundry Filter are effective porosity (that is, the porosity that effectively affects the porosity), fluid tortuosity, specific surface area and pore size.
Molten metal filtration requires good chemical stability and excellent filtration function, especially the collection and absorption of 1-10um small impurities and filtration residues. The CFF three-dimensional structure can greatly improve the quality of the casting by changing the molten metal from turbulent flow to laminar flow, removing gas, and smoothing the casting.
The CFF metal filtration process also depends on alloy type, grain refiner, casting rate, metal temperature and so on. Adding a grain refiner before the Ceramic Foundry Filter has a particularly adverse effect on the filtration efficiency.