Core Performance And Technical Specifications Of Zirconia Ceramic Foam Filters

1. Thermal Resistance: Zirconia ceramic foam filters exhibit exceptional high-temperature stability. Their maximum service temperature ranges from 1700°C to 1760°C, with certain high-purity grades capable of withstanding temperatures as high as 1780°C, making them ideally suited for high-temperature molten steel environments.

2. Material Composition: Primarily composed of a mixture of ZrO2-based ceramic particles and additives (such as alumina powder and yttria powder), these filters are fabricated using an organic foam impregnation process to create a three-dimensional, interconnected porous network structure.

3. Specifications and Models: Pore density is typically expressed in PPI (Pores Per Inch). Common specifications include:

* 10 PPI: Suitable for ductile iron castings, large gray iron castings, and steel castings; filters impurities with diameters of approximately 80 μm.

* 20 PPI: Used for malleable iron castings, small gray iron castings, and non-ferrous alloy castings; filters impurities with diameters of approximately 40 μm.

* 30 PPI and Above: Employed for copper alloy and aluminum alloy castings, as well as for precision casting applications; capable of filtering even finer impurities with diameters of less than 20 μm.