23 6月 Germany China Foundry Filter
Germany China Foundry Filter can remove the most effective and reliable method of non-metallic inclusions in aluminum alloy melt. In principle, it can be divided into filter cake filtration and depth filtration. There are many types of filtration, the best ones are filter tubes and ceramic foam filters.
When the impurity particles in the molten aluminum flow through the micropores of the porous ceramic filter element, they come into contact with the walls of the micropores due to inertia. The inertial impact is proportional to the square of the diameter of the impurity particles, and inversely proportional to the flow speed and fluid viscosity.
Germany China Foundry Filter has been running for a period of time, because the internal communication of the filter element may be caused by particulate impurities in the fluid medium, and the surface filter cake layer thickens, resulting in an increase in filtration resistance. When the flow rate is reduced, it can flow back through gas and mix with a single liquid. The washing method can be regenerated, and the equipment is basically restored to its original state. Therefore, timing back-blowing and back-washing can greatly extend the service life of the porous ceramic filter element.
Generally speaking, the installation and use of ceramic foam filters need to pay attention to the following aspects
1. The correct choice of ceramic foam filter: The size and specifications of the filter plate must consider the specific type of metal filtration, the maximum level, the total amount of filtration, and the cleanliness of the original aluminum liquid.
2.The pretreatment of melt filtration cannot be ignored: such as normal furnace and holding furnace slagging and furnace cleaning.
3. Especially the online degassing device is still necessary, because it can not only reduce the hydrogen content in the melt, but also remove some non-metallic inclusions.
4. The ceramic foam filter should meet the high temperature CFF filter box: suitable for sealing, can prevent the gap between metal filtering and entering the box, and also avoid the foam filter plate from being too light and failing from the aluminum liquid.
It can effectively remove large-size inclusions in molten aluminum and can effectively adsorb small-size inclusions. The effect of reducing aluminum slag pollution is obvious.
Good thermal shock resistance improves the corrosion resistance to molten metal. Automatic production line, accurate size, more suitable for CFF filter box.
Germany is located in central Europe, bordering Poland and the Czech Republic to the east, Austria and Switzerland to the south, the Netherlands, Belgium, Luxembourg, and France to the west, Denmark to the north, and the North Sea and the Baltic Sea. It is the country with the largest number of neighbors in Europe.
Germany is a country with relatively poor natural resources. In addition to rich reserves of hard coal, lignite and salt, it relies heavily on imports in terms of raw material supply and energy, and about two-thirds of primary energy needs to be imported.
The natural gas reserves are about 382 billion cubic meters, which can meet about a quarter of domestic demand. The proven reserves of hard coal are about 230 billion tons, and lignite is about 80 billion tons.
The proven reserves of other mineral deposits are: about 13 billion tons of potash, 1.6 billion tons of iron ore, and 50 million tons of petroleum. There are a small amount of uranium mines in the southeast.
The forest covers an area of 10.766 million hectares, accounting for about 30% of the country’s area. The water area is 860,000 hectares, accounting for 2.4% of the country’s area.