23 6月 Netherlands China Foundry Filter
Netherlands China Foundry Filter has a large flow capacity and is suitable for filtration and purification in continuous casting and continuous rolling production.
The metal filters and fiber cloth filters used by low-end customers can only remove large inclusions in the aluminum alloy melt, but cannot remove the inclusions below micrometers.
The non-metallic inclusions in the aluminum melt will produce surface cracks and pinholes during the aluminum foil rolling process. Surface intimacy is also a defect that is not allowed for high-end PS board bases.
In order to meet the needs of high-grade aluminum foil blanks and PS plates, it is necessary to remove non-metallic inclusions in the aluminum melt.
Filtration has become an important link in the production of aluminum foil. The purpose of filtration is to remove non-metallic inclusions in the aluminum melt as much as possible.
The basic requirements for Ceramic Foam Filter Aluminium are
It has sufficient strength at room temperature and high temperature to prevent damage and slag falling during transportation, installation and use.
It has high chemical stability, does not react with aluminum melt in the working temperature range, and will not cause harm to liquid aluminum and the environment.
It has sufficient through porosity and liquid aluminum permeability to ensure smooth filtration during the production process.
Therefore, the filter plate should have a small thermal expansion coefficient without cracking when heated.
It does not absorb moisture, has low density and specific heat capacity, and does not require preheating before use.
Netherlands Aluminium tells aluminum smelting and foundry factory the precautions for using the Netherlands China Foundry Filter
1. When choosing foam ceramics, first consider the requirements for filtration accuracy.
Second, consideration should be given to the requirements of the flow rate of the aluminum alloy liquid on the casting speed, the original cleanliness of the melt, the highest content of inclusions in the aluminum alloy melt, and the total throughput of the aluminum alloy melt.
2. Install the ceramic foam filter correctly. The ceramic foam filter is usually arranged horizontally in the CFF casthouse.
The advantage of the down-pouring method is that the aluminum alloy melt rises uniformly, and there is no turbulence when it hits the filter element, which ensures the uniform start of the filter element and reduces the risk of channeling.
In addition, when installing the ceramic foam filter, the components must be sealed with refractory fibers and leak aluminum.
3. Before filtering, it is best to use a radiant heater or a gas blowpipe to heat the foam ceramic filter to make it close to the melt temperature to ensure that when the front liquid flows to the foam ceramic, the metal does not solidify and does not block the pores.
The Netherlands is located in western Europe, bordering Germany to the east and Belgium to the south. It borders the North Sea to the west and north, and is located in the deltas of the Rhine, Maas and Scheldt rivers. Located between 3°21′ to 7°13′ east longitude and 50°45′ to 53°52′ north latitude.
The natural resources of the Netherlands are relatively poor, only natural gas and oil reserves are relatively abundant (the total proven natural gas reserves in 2012 are about 1,930 billion cubic meters), and there is a certain amount of coal. The development of natural gas in the Netherlands is second only to Russia, the United States and Canada, ranking fourth in the world, with 47.7 billion cubic meters extracted in 2016. At the end of 2012, oil was discovered in the North Sea to which it belongs.