Foundry Filter Hindalco Industries can effectively remove all kinds of inclusions in the aluminum water, and the fineness can reach the micron level so that the aluminum water becomes a smooth laminar flow, which is conducive to perforation.
These impurities usually generate bubbles and inclusions in the slab, which seriously affect the purity of the molten metal, which in turn affects the processing performance, mechanical properties, corrosion resistance, and appearance quality of the product.
Today, there are many ways to remove these harmful substances and purify the aluminum melt.
According to the different methods, these methods can be divided into two categories: in-furnace processing and out-of-furnace continuous processing (ie online processing).
According to the function, it can be divided into main degassing or slag removal. Ceramic casting filter manufacturer (www.adtechamm.com) introduced a method of continuous filtration of an aluminum melt using foam ceramic filter plates. External continuous treatment, the main purification operation is slag removal.
Ceramic foam filter Dimension
Ceramic foam filter Pore Size (PPI): 10/20/30/40/50/60
30ppi 40ppi Foundry Filter is the most commonly used ceramic foam filters in the aluminum casting industry.
Ordinary aluminum casting usually uses 10-40ppi ceramic filter plates.
Aviation and high-quality aluminum materials usually use 30-60ppi ceramic filter plates.
Foundry Filter Hindalco Industries has a certain strength network structure, which can withstand the pressure difference of the metal liquid surface and the influence of the metal flow, but it is brittle and brittle. Due to the precise composition of this material, uniform quality, large surface area, and excellent filtering effect.
30ppi 40ppi cast-in filters usually use polyurethane foam as a carrier and are immersed in a ceramic slurry made of fine powder (such as refractory aggregate sintering aids, binders and water), and then squeeze out the excess slurry. The ceramic material around the foam fiber is dried, fired, and sintered at a high temperature, and finally the foam ceramic product is left.
Because the casting temperature of the casting alloy is different, the foam ceramic filter made of refractory material should be used when casting.
In order to solve this problem, a simple filter made of wire mesh, perforated steel plate, etc. is inserted into the gating system to remove impurities from the beginning.
Used for internal filters with two-dimensional structures such as silicate needle fibers and boron nitride fibers.
Nowadays, ceramic foam filters use pore sizes to mechanically block larger particles of mixed oxide, and filter cakes to filter out smaller mixed oxide particles.
It also has the functions of adsorption and rectification. The production line using ceramic foam filters greatly increases the output of castings.