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The demand for higher-quality aluminum products is progressively on the rise, especially in cutting edge industries like aerospace. Degassing is a process used to remove the hydrogen from the molten aluminum. The most popular aluminium degassing with nitrogen method involves introducing nitrogen gas into the liquid aluminum. The hydrogen causing these inclusions is simply drawn […]

The molten aluminum degassing with nitrogen is usually introduced into the melt through a rotary degassing device. This degassing process is limited by the laws of thermodynamics; when purge bubbles are introduced into the melt, they float towards the surface, thereby collecting hydrogen. In the best case, these hydrogen-saturated bubbles leave the melt and reduce […]

The molten metal flows through a series of successively arranged integrated purification stages, including a slag removal stage, in which it is removed from the molten metal by woven refractory filters, thereby removing larger particulate impurities from the molten metal. The smelting stage removes the entrained and dissolved hydrogen metal from the molten metal, an […]

The alumina ceramic foam filter used for aluminum casting is one of the core components of the ceramic filter. It is a new type of porous functional ceramic material, which is covered with crisscross capillary pores (about 1 to 10 microns in diameter). This is the channel for filtration. This component is called the board […]

The CFF system uses special ceramic foam filters for casting, it can remove the inclusions generated between the refining system and the mold table. The ability of the ceramic foam filter to capture these inclusions is critical to maintaining a clean ingot during the metal solidification process. Therefore, the quality and productivity of downstream operations […]

The porous ceramic foam filter uses polyurethane foam as a carrier, immerses it in a coating made of ceramic powder, binder, sintering aid, suspending agent, etc., and then extrudes the excess coating to uniform the ceramic coating ground applied to the carrier. The skeleton becomes a green body, and the green body is dried and […]

How to choose the correct ceramic foam filter? There are many impurities and the casting quality is average. A ceramic foam filter with a larger mesh can be used, and a glass cloth coarse filter is added in front of the filter. At this time, semi-continuous casting is important for coarse filtration using glass cloth. […]

In order to remove the alkali metal elements (ie Na, Ca, K, Li), the use of a chlorine-containing reactive flux gas is a recognized method for processing molten aluminum. Under equilibrium conditions, the chlorides of each of these elements are produced as reaction products. Except for LiCl, all these halide salts are pure species and […]

Al2O3 ceramic foam filter is just developed as a new type molten aluminium filter to decrease casting flaw in recent years. Alumina ceramic foam filter has the characteristics of light-weight, high mechanical strength, large specific surface areas, high porosity. In industrial applications, filter materials are often chosen according to cost as well as their processing and […]

Gas porosity may occur if hydrogen is introduced into the molten metal when it is poured into the mould. Hydrogen can be drawn in through moisture or water vapour in the atmosphere. Aluminium degassing system is used to solve this problem and it is carried out as an important part of the aluminium casting process. […]