There are many reasons for aluminum pollution

● In the smelting process, aluminum is exposed to the furnace atmosphere in a molten or semi-molten state, easy to oxidize, easy to react with water vapor and absorb hydrogen, easy to form various forms of non-metallic slag (such as furnace lining debris, chloride, carbide in flux, etc.) and coarse metal intercompound particles and so on. 

● Part of the waste that makes up the charge brings some non-aluminum impurities into circulation.

● Because the waste is coming from the process waste and scrap during each process in factory and the waste outside the factory, so, the composition is complex due to different way as well as the quality is poor. These impurities often make the billet produce bubbles and inclusions, which seriously affect the purity of the metal melt, thus further affect the processing properties, mechanical properties, corrosion resistance and the appearance quality of the product.

The main application of alumina ceramic foam filter plate

● Alumina foam ceramic filter plate can effectively remove all kinds of inclusions with fineness up to micron level in aluminum liquid, make aluminum liquid into a steady laminar flow, which is conducive to filling. 

● It has a unique mullite-corundum structure, good mechanical strength and chemical stability, excellent resistance to aluminum liquid erosion performance.

● It can obtain stable filtration effect by strict control of hole size and through hole rate.

● The ceramic foam filter plate is surrounded by a sealing ceramic fiber liner, which facilitates the seal of the filter plate in the filter box to ensure that there is no metal liquid sideflow.

What are advantages of Hebei Cangchen making such plate?

We, Hebei Cangchen, a professional manufacturer of such ACFFP-Alumina Ceramic Foam Filter Plate with own registered trademark: "CANGENDAS", but also provide OEM service to all customers from the world. 

We are a professional company with ISO certificate and our Filter Plate have been certified by REACH & RoHS.

How to choose the suitable alumina Ceramic foam filter plate?

First of all, according to the impurity content of aluminum melt, melt transfer flow rate of the final casting product quality requirements.

The plate with a large hole mesh can be chosed when a lot of impurities contained and normal quality of casting products required.

New type plate with small holes can be selected when the quality requirements of casting products are high.

"CANGENDAS" Brand alumina ceramic foam filter plates adopt the organic bubble body with three-dimensional network structure and connected pores as the carrier, which is penetrated into the thixotropic alumina slurry, and adopts the automatic extrusion process with four square correction center distance, so that the slurry is evenly coated on the carrier bubble skeleton, and is roasted at 1180℃ after drying and curing. Installed in the filter box for aluminum alloy liquid impurities filtration, to meet the production of high value-added, high technical performance of aviation, transportation and other aluminum alloy precision casting. Such as: computer hard disk, printing with PS board base, can material, jet turbine engine fan blades and other products, to achieve the ideal cleanliness, to obtain good results.

Depends on the flow rate and total amount of melt through.

Secondly, look at its color, shoot its body, burn its things during select the filter plate.

The color is pure and no impurity that means the material is uniform; The hand is not sticky thatmeans the surface is not sprayed with binder, which will not cause secondary pollution.

Holding the filter plate with one hand and clapping with the other hand, if the ceramic particles continuously drop when beating the filter plate, it means that a poor quality filter plate, which will cause secondary pollution of liquid aluminum.

Use an open flame or electric heating to burn red and make it cooled at room temperature immediately without cracking slag, it is a good filter plate.

Thirdly, The effective specific surface area or porosity calculation of the foam should be carefully evaluated when selecting.

The mesh homogeneity of the surface layer of the filter plate can be observed, and then the mesh homogeneity of the cross section can be observed.

If possible, the porosity can be measured by drainage method.

The three-dimensional mesh is homogeneous, the porosity is relatively large, means it is an excellent foam ceramic filter plate.