Molten Metal Foam Filters

Molten metal foam filters can reduce casting defects. Metal foam filters are characterized by light weight, high mechanical strength, large surface area and high porosity. Through the distributed pore network structure, they can increase the surface area and absorb sinter, make the liquid metal more pure, and greatly reduce the occurrence of waste quality problems such as blisters and holes. Molten metal foam filter has excellent thermal shock resistance, chemical resistance and high temperature stability.

Metal foam filters provide the best way to eliminate non-metallic inclusions in aluminum solutions. These inclusions are the main source of quality problems of castings.

When casting products, remove impurities in molten metal, refractory waste, solid refractory alloy and sinter, eliminate turbulence, reduce porosity of casting and improve casting quality.

Therefore, our metal foam filters are widely used in aluminum foundry industry to prevent oxide, scum, gas, slag and other impurities from defects.

The turbulence in the metal flow is eliminated, the metal flow is stabilized, and spray, spatter and collapse are avoided. Improve fluidity, castability, processability, yield, and cost-effectiveness. Remove a large proportion of fine particles, reduce waste and rework, Low-pressure loss. Provide a consistent flow rate and capacity.

Molten Metal Foam Filters Advantages

3D grid structure
High mechanical strength, no residue in beating
High porosity
Large surface area, strong absorption of impurities
Excellent thermal shock resistance

Danish Aluminum Inc said that the products of the metal foam filter plant AdTech can effectively remove and absorb various impurities in molten aluminum, thereby improving the surface quality, product performance and microstructure effectiveness. It is mainly used for precision casting of aluminum alloy such as household, building, electric power, condenser tube, cable, etc.

Danish aluminum engineers recommend Adtech filters to other aluminum plants in Denmark to make molten aluminum purer. Danish aluminum has a proposal:

1. Selection of aluminum alloy bar: 10-30ppi

2. Long term casting option: 30-50ppi

3. Selection of high quality aluminum profile or plate: 40 or 50ppi

4. Double zero wave continuous casting and rolling options: > 50ppi