The quality of the aluminum melt is very important, it affects the subsequent processing performance and the quality of the final product to a large extent, so the purification of the aluminum melt is an essential step. AdTech alumina foam ceramic filter plate can filter and clean aluminum. Ceramic foam filters are a proven, cost-effective way to remove inclusions from aluminum melt. These filters are machined to tight dimensional tolerances, are treated during processing, and have very low friability. It is a combination of excellent strength, thermal properties, and resistance to attack from molten aluminum.
There are many reasons for aluminum pollution. On the one hand, during the smelting process, aluminum is exposed to the atmosphere in the furnace in a molten or semi-molten state, which is prone to oxidation, reacts with water vapor and absorbs hydrogen, and easily forms various forms of non-metallic slag (Such as lining fragments, chlorides, carbides in flux, etc.) and coarse intermetallic particles, etc. On the other hand, part of the scraps that make up the charge brings some non-aluminum impurities in the circulation process. Because the waste comes from the process waste and waste material and waste outside the factory in each process of the factory, the route is different, the composition is complicated, and the quality is poor. The above-mentioned impurities often cause bubbles and inclusions in the casting slab, which seriously affect the purity of the molten metal, thereby further affecting the processing performance, mechanical properties, corrosion resistance, and appearance quality of the product.
The alumina foam ceramic filter plate 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 filling. It has a unique mullite-corundum structure, which is good mechanical strength and chemical stability, excellent resistance to aluminum water washing. Strictly controlled hole size and through-hole rate, can obtain a stable filtering effect; the foam ceramic filter plate is surrounded by a sealed ceramic fiber liner, which helps to the sealing in the filter box ensures that there is no side flow of molten metal. This product is mainly used in the purification process of aluminum and aluminum alloy production, and also used as various gas-solid, liquid-solid separation media, catalyst carriers, burners, sound-absorbing and environmental protection fields.
The use of alumina ceramic foam filter plates to purify molten aluminum has brought huge benefits to the strip foil and its products (such as can blanks, car finishing materials, PS printing plates, etc.). For manufacturers of aluminum alloy profiles, The following obvious advantages:
1. Improve extrusion productivity: When the 6063 alloy extruded billet is purified by the filter plate, the extrusion speed increases by about 20% and the productivity increases by nearly 15%.
2. Extend mold life and reduce the number of mold repairs.
3. Reduce the squeezing force: When the 6063 alloy melt is purified with a filter plate, it is found that the squeezing force is reduced by 3% more than the unfiltered one.
4. Significantly improve the surface quality of aluminum profiles.