Refractory Ceramic Foam Filter Manufacturers In India is a key technology in the production of aluminum foil blanks. It is the prerequisite and guarantee for processing high-quality double zero aluminum foil. It has a profound impact on the quality and yield of ultra-thin double zero aluminum foil.
When the new metal foam filter is used for the first time, slightly larger inclusions in the molten aluminum may pass through the holes of the ceramic filter plate. These “large particle” inclusions inherit and affect the inherent quality of the blank.
After the ceramic foam filter has been used for a period of time, some fine particles of impurities will be adsorbed in its pores.
Since the filtering capacity of molten aluminum does not gradually increase, the adsorbed particles continue to accumulate in the pores of the filter plate, making the pores of the filter plate smaller, thereby improving the filtering effect.
However, when the amount of impurities absorbed by the filter plate is large enough to block the holes of the filter plate, the filtering effect begins to decrease, and the quality of the cast-rolled slab decreases accordingly.
It can be seen from the test pinholes that the secondary filter plate can remove the fine particles in the aluminum melt and has a better purification effect on the aluminum melt.
Refractory Ceramic Foam Filter Manufacturers In India can improve the quality of finished products (foil, block, ingot, rod, profile, etc.) to meet the requirements of high-purity cast metal.
Reduce the scrap rate of finished products and improve product quality.
Ceramic cast filters are usually standard size (inches) with a porosity of 10-60 PPI (pores per inch).
The size of the filter depends on its porosity, which is selected according to the filter capacity, pouring time and the layout of the CFF filter box. The choice of filter porosity of ceramic castings depends on the specific alloy, casting temperature, metal contamination and the required output quality.
Before pouring, the filter must be fully preheated to ensure its normal operation.
Electric heating for 1-2 hours, natural gas baking for 10-20 minutes.
If the filter element is equipped with a permanent heating device, the filter element can be reused. If the filter contains metal, the metal must be replaced in the next casting.
The wetting behavior of aluminum, filtering alumina, and SiC foam ceramic filters were studied.
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