Ceramic filter foam

Ceramic filter foam

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Ceramic filter foam can effectively remove various inclusions in the aluminum water with a fineness of micrometers, so that the aluminum water becomes a smooth laminar flow, which is conducive to punching.
These impurities usually cause bubbles and inclusions in the slab, which seriously affect the purity of the molten metal, thereby further affecting the processing performance, mechanical properties, corrosion resistance and product appearance quality.

Today, there are many ways to remove these harmful substances and purify the aluminum melt.
According to different methods, these methods can be divided into two categories: furnace processing and continuous processing outside the furnace (ie online processing).
According to the role, it can be divided into two types: mainly degassing or deslagging. The ceramic casting filter manufacturer (www.adtechamm.com) introduced a method of continuous filtration of aluminum melt using foam ceramic filter plates. External continuous treatment, the main purification operation is to remove slag.

Ceramic filter foam has a certain strength mesh structure, which can withstand the pressure difference of the metal liquid surface and the influence of the metal flow, but it is brittle and brittle. Due to the precise structure of this material, uniform quality and large surface area, the filtering effect is excellent.

30ppi 40ppi casting filter usually uses polyurethane foam as a carrier, immersed in a ceramic slurry made of fine powder (such as refractory aggregate sintering aid, binder and water), and then squeezes out the excess slurry. The ceramic material around the foam fiber is dried, fired and sintered at high temperature, and finally the foam ceramic product is left.
Because the casting temperature of the casting alloy is different, the foam ceramic filter of refractory material should be selected for casting.

To solve this problem, a simple filter made of metal wire mesh, steel plate with holes, etc. is inserted into the gating system to remove impurities from the beginning.
To the inner filter with two-dimensional structure such as silicate needle fibers and boron nitride fibers.
Nowadays, ceramic foam filters use pore sizes to mechanically intercept large particles of mixed oxide, and filter cakes to filter small particles of mixed oxide.
It also has the functions of adsorption and rectification. The production line using foam ceramic filters significantly increases the output of castings.

Ceramic filter foam

Ceramic foam filter
660x660x50 (26″)
584x584x50 (23″)
508x508x50 (20″)
432x432x50 (17″)
381x381x50 (15″)
305x305x50 (12″)
228x228x50 (9″)
178x178x50 (7″)

Ceramic foam clamp hole size (PPI): 10/20/30/40/50/60

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Filter Casting AgentFilter Casting Agent Ceramic Foundry Filters ManufacturersCeramic Foundry Filters Manufacturers Ceramic Filters FoundryCeramic Filters Foundry Ceramic Foam Filter China FactoryCeramic Foam Filter China Factory Refractory Sic Foam FilterRefractory Sic Foam Filter Alu Alumina Ceramic Foam FilterAlu Alumina Ceramic Foam Filter Foam Ceramic Filter AustraliaFoam Ceramic Filter Australia Ziroconia FilterZiroconia Filter Use Filter FoundryUse Filter Foundry Tap Hole ConesTap Hole Cones Reticulated Foam Filters are made by immersing polyurethane sponge in ceramic slurry, squeezing out the excess part, drying, and finally sintering at high temperature to form a three-dimensional porous ceramic material, which is a pipe with twists and turns interconnected with uneven thickness.It is precisely this uneven tube wall that plays a key role in trapping small inclusions in the aluminum melt. This structure also increases the path through which the aluminum melt is in contact with the ceramic part of the filter, thereby increasing the probability of inclusion particles being attached.The main purpose of using ceramic foam filters is to remove inclusions in the aluminum melt. Inclusions usually exist in three forms in the melt: metal oxides; foreign particles such as refractory scraps; particles introduced during melt processing.Reticulated Foam Filters can not only effectively remove the bulk heterogeneous impurities in the molten aluminum, but also filter out small inclusions of a few microns that cannot be removed by traditional processes. Since the hydrogen atoms and other harmful ions in the aluminum liquid are often adsorbed on the inclusions, and the inclusions can become the core of bubble formation, so while filtering the inclusions, it can also reduce the harmful gases in the aluminum liquid.The ceramic foam filter manufacturer will use a set of more complete measures to ensure the stability of the product, to ensure that the strength, through-hole rate, geometric size, appearance quality, physical and chemical properties of the final product meet the standards.In production, in order to achieve a better filtering effect, the aluminum liquid upstream of the filter must have a certain degree of cleanliness, that is, the upstream aluminum liquid can be treated with traditional gas dehydrogenation or flux treatment.To remove inclusion particles above 30um, it is recommended to use multi-stage filtration technology and filter with different ppi filter combinations to achieve satisfactory results.If the above measures are not used as a prerequisite, separate filtration and purification of aluminum alloy melts with high hydrogen and oxygen content, many non-metallic inclusions, and larger sizes, not only the filtration efficiency is low, but the filter is easy to block, resulting in increased costs and purification The effect will not be very good.After taking the above measures, the hydrogen content in the alloy melt has been reduced to a very low level, and the size of the oxide inclusions in the melt has also been smaller.Therefore, the use of Reticulated Foam Filters can effectively remove the fine and dispersed oxidation inclusions, thereby improving the filtration efficiency and reducing the cost of filtration and purification.In addition, the filtered high-quality molten aluminum must be protected from secondary pollution, that is, there should be more stringent requirements for the refractory materials downstream of the filter box, and the surface oxide scale of the downstream molten aluminum must be protected.Reticulated Foam Filters Molten Aluminium CffMolten Aluminium Cff Silicon Carbide Foam FilterSilicon Carbide Foam Filter Aluminum Casting Industry Buy Foam Furnace FilterBuy Foam Furnace Filter
One Response to Ceramic filter foam
  1. coronavirus stats 12月 29, 2020 at 12:47 下午 回复

    Molten aluminum in a melting furnace before further processing – casting into ingots or castings – almost always requires filtration. Filtration methods depend on the casting technology used or the method of processing aluminum melt. generally considered, that it is possible and beneficial only when working with large enough volumes of metal. However, filters can be used for large industries., and in small foundries, including for filtering metal during casting of each individual cast. Filter dimensions depend on its expected performance., the duration of casting and the location of the filter in the filter unit. Filter brand selection (ppi values) determined by the features of aluminum alloy, casting temperature, degree of contamination of the melt and the required level of purity of the metal at the exit.


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