The investment casting filters are irregular multi-layered tortuous mesh, and the molten metal must pass through the tortuous channel to enter the cavity. Large inclusions, which are too large to pass through the channel, are captured on the surface of the filter.inquiry
Filtration mechanism of investment casting filters: filter cake, adsorption, rectification, mechanical screening, etc.
In the actual use process, it can be roughly classified into two categories: rectification and filtering.
Generally, fiberglass mesh filters and straight-hole honeycomb ceramic filters can only remove the inclusions on the surface, and the inclusions smaller than the minimum pore size cannot be filtered and will flow into the sand mold. In contrast, the foamed ceramic filter is an irregular multi-layered tortuous mesh, and the molten metal must pass through the tortuous channel to enter the cavity. Large inclusions, which are too large to pass through the channel, are captured on the surface of the filter. With the increase of inclusions, the inclusions accumulate on the surface of the filter, and gradually form a filter cake, so that only very fine particles can pass through.
Silicon carbide ceramic foam filter
|Aperture||Length * Width * Thickness (mm)||Diameter * Thickness (mm)|
|10/20/30/40 PPI||40×40×15||Dia 40×22|
|10/20/30/40 PPI||50×30×22||Dia 50×22|
|10/20/30/40 PPI||50×50×15||Dia 60×22|
|10/20/30/40 PPI||50×50×22||Dia 70×22|
|10/20/30/40 PPI||60×60×15||Dia 75×22|
|10/20/30/40 PPI||75×50×22||Dia 80×22|
|10/20/30/40 PPI||75×75×22||Dia 90×22|
|10/20/30/40 PPI||100×75×22||Dia 100×22|
|10/20/30/40 PPI||100×100×22||Dia 125×22|
|10/20/30/40 PPI||150×150×22||Dia 150×22|
|10/20/30 PPI||200×200×40||Dia 200×50|
|10/20/30 PPI||300×300×20||Dia 300×50|
|10/20/30 PPI||300×300×50||Dia 305×50|
|10/20/30 PPI||350×350×50||Dia 250×50|
|10/20/30 PPI||400×400×50||Dia 400×50|
|10/20/30 PPI||450×450×50||Dia 450×50|
|10/20/30 PPI||500×500×50||Dia 500×50|
Silicon carbide ceramics do not require preheating. Ceramic pieces are fragile, so it is necessary to avoid violent falls, drops, and brutal operations during transportation and use; when taking out the ceramic ware, some fine slag may be generated due to bumping or scratching, so it is best to use it before putting it into the casting system. Use compressed air to wipe all sides of the pottery, or turn over both sides by hand, and gently shake off the fine slag adhering to the surface.
Put it in a dry and ventilated place, and the outer box should not be under heavy pressure. Generally, the ceramic ware should not be stacked more than 7 layers of cartons after packing.