High Alumina Bricks 40 PPI Open Celled Ceramic Honeycomb Foam Filter for Investment Aluminum Alloy Casting
Product Name: alumina foam ceramic filter plate
Product specifications: length 584mm * width 584mm * thickness 50mm
Pporosity 50ppi
Product color: white
Chemical composition: AL2O3
Features and Advantages:
The foam ceramic filter has the characteristics of light weight, high strength, large specific surface area, high porosity, corrosion resistance, high temperature impact force and so on.
It has an open cell structure, which can collect the total surface area of slag, and can remove the small inclusions adsorbed to the inner pore surface of the filter sheet, so that the liquid metal is stable forming.
It’s very sensitive to defects caused by impurities, foam filter can help improve the quality of casting and effectively reduce the rejection rate, effectively remove the final product quality defects – slag hole, trachoma, air hole and other quality problems.
Efficacy of ceramic foam filter
1. Purify the metal molten liquid
2. Simplify the pouring system
3. Iimprove the casting metallographic structure
4. Reduce inclusions in casting
5. Improve the casting quality rate
6. Reduce the internal reoxidation defect of castings
7. Reduce surface defects of castings after machining
Guide to the selection of foam ceramics
It is very important to select and design filter type and filter holder correctly according to casting type and pouring weight.
The general principle is that the whole gating system should be a pressure-free system to ensure the smooth filling of liquid metal.
The main points are (ratio of cross-sectional area) :
F Straight runner: F filter front end: F filter back end: F Cross runner: F inner runner = 1:4:1.75:1.1:1.2
Application:
It is widely used in casting iron, casting steel, casting copper and casting aluminum.
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