{"id":2965,"date":"2020-09-18T09:11:34","date_gmt":"2020-09-18T09:11:34","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=2965"},"modified":"2020-09-18T09:11:34","modified_gmt":"2020-09-18T09:11:34","slug":"filtering-mechanism","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/filtering-mechanism\/","title":{"rendered":"Mekanisme Penyaringan"},"content":{"rendered":"

There are many kinds of filter mechanisms. Take the ceramic foam filter as an example to illustrate the main filtering mechanism. The filtering mechanism of ceramic foam filter includes mechanical filtration, rectification, filter cake function, adsorption.<\/p>\n

\"Mekanisme<\/p>\n

Mechanical filtration<\/strong>: When the molten metal flows through the filter busa keramik<\/a>, inclusions larger than the pore diameter are blocked on the filter.<\/p>\n

Rectification<\/strong>: The molten metal is generally in a turbulent state during pouring. When the molten metal passes through the filter, it tends to a laminar flow state, which is conducive to the floating of inclusions, reducing the impact on the modeling, and reducing sand washing and secondary oxidation inclusions.<\/p>\n

Filter cake function<\/strong>: As the filtration progresses, the filter pores will gradually become clogged by inclusions and become smaller, thereby filtering smaller inclusions.<\/p>\n

Adsorption<\/strong>: The ceramic foam filter has a large surface area, and the filter material has a strong adsorption effect on inclusions. When the metal liquid flows through these curved channels, the tiny inclusions are easily adsorbed to the filter channel wall on. The different filtering effects of various filters are mainly due to the different strengths of the above-mentioned functions.<\/p>\n

In general, the ceramic foam filter with a three-dimensional structure has a good filtering effect, and the simultaneous action of multiple filtering mechanism can eliminate the inclusions in the molten metal to the greatest extent.<\/p>\n

\"Mekanisme<\/p>\n

In principle, the ceramic foam filter can be placed at any position of the gating system, but the closer to the casting, the better the filtering effect. In order to prevent high-temperature molten iron from crushing the filter under high pressure, try to avoid placing it under the sprue. The filter has a blocking effect on the molten metal and part of the mesh is blocked during the filtering process. The filtering area should be 2 to 4 times the area of \u200b\u200bthe original runner.<\/p>\n

The benefits of filtration The filtration of molten metal can bring many benefits, mainly in the following aspects.<\/p>\n