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Ceramic Filter
Ceramic Foam Filter Product Description
Ceramic foam filters utilize organic foams with interconnected pores and a three-dimensional mesh structure as a carrier. These foams are then infused into a thixotropic alumina slurry. A fully automated extrusion process with square center distance correction ensures the slurry is evenly applied to the foam skeleton of the carrier. The foam is then dried, solidified, and calcined at 1180°C. Installed in a filter box, it filters impurities from molten aluminum alloy, meeting the requirements for producing high-value, high-performance aluminum alloy precision castings for aviation and transportation applications. These include computer hard drives, PS substrates for printing, canning materials, and jet turbine engine fan blades.
Advantages of Ceramic Foam Filters
Utilizing an adsorption-based filtration mechanism, it effectively removes large inclusions from molten aluminum and effectively absorbs fine inclusions.
It produces no slag, effectively reducing contamination of the molten aluminum.
It offers excellent thermal shock resistance, improving corrosion resistance to molten metals.
Automated production lines with a three-step calibration process ensure precise dimensions and a better fit within the filter box.
It improves surface quality, product performance, and microstructure.
Advantages of Ceramic Foam Filters
The ceramic foam filter plate is surrounded by a sealing gasket, which acts on the contact surface between the filter plate and the filter box to prevent molten aluminum from leaking through the contact surface.
The ceramic foam filter plate uses three different specifications of sealing gaskets: fiber paper edge; fiber cotton edge; and expanded cotton edge.
Ceramic Foam Filter Plate Sizes
DIMENSION (± 3 MM):
7x7in 9x9in 12x12in 15x15in 17x17in 20x20in 23x23in 26x26in
THICKNESS: 50 ± 2 mm
BEVEL ANGLE: 17.5± 1.5°
SPECIAL DIMENSION:
square, rectangular, round, trapezoidal, abnormal, or customized as per the requirement.
Instructions for Using Ceramic Foam Filter Plates
Inspect and clean the filter housing to remove debris and keep it clean and free of damage.
Gently place the filter plate into the filter housing and manually tighten the sealing gasket around the filter plate to prevent the molten aluminum from drifting or floating.
Evenly preheat the filter housing and filter plates to a temperature close to the molten aluminum temperature. The preheat temperature for the filter plates should be no less than 260°C. Preheating removes adsorbed moisture, helps to open the initial filter aperture, and prevents partial clogging of the filter plate due to thermal expansion and contraction. Preheating can be done using electric or gas heating, and should typically take 15-30 minutes.
During casting, carefully monitor the changes in the liquid aluminum head and maintain the required flow of molten aluminum. The normal starting pressure is 100-150mm. As the molten aluminum begins to flow through, the pressure will drop below 75-100mm and then gradually increase.
During normal filtration, avoid knocking or vibrating the filter plate. Ensure the launder is filled with molten aluminum to avoid disturbances of either large or small amounts. After filtration, remove the filter plate and clean the filter box in time.
Performance Parameters
Alumina Foam Filter can remove impurities efficiently, including large size and small size of particles. It can make the molten aluminum flow steady, and it is good for cast filling, by reducing defects of slag and pinhole and increasing the quality of aluminum alloy and product rate. It is widely used in aluminum alloy casting production.
Ceramic Foam Filter Other Sizes
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