Zirconia ceramic foam filter for steel casting

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Product Description:

Zirconia ceramic foam filter


Application:For the filtration of molten steel and alloy,large scale iron casting
Product standard:China national GB/T 25139-2010
Zirconia ceramic foam filters are determined for filtering of steel and steel alloys up to the temperature of 1700 °C.
Filters are recommended especially for high quality grades of alloys.
-Drop turbulent of molten steel and alloy
-Improve accepted rate of steel casting
-Reduce foreign matter of steel casting
-Drop twice oxide flaw
-Reduce second-face flaw after machine process
PHYSICAL PROPERTY:
Main material:ZrO2
Applied Temperature:≤1700℃
Color:Yellow
Hole density (PPI):10/20PPI(PPI=pores per inch)
Porosity(%):80-87
Bending strength(Mpa):≥1.0
Compressive Strength(MPa):≥1.75
Bulk Density(g/cm3):0.7-0.85
DIMENSIONS:
Length*width*height=(40-100)*(40-100)*(20-35)mm
With round,square and rectangle shape.
Size tolerance:±1mm
Pore size: 10/20PPI          
PPI tolerance:±2PPI
CHEMICAL COMPOSITION:
Al2O3 MgOSiO2 Fe2O3 ZrO2
≤1.8% ≥3.0% ≤0.5% ≤0.1% ≥94.00%
APPEARANCE REQUIREMENTS:
-No cracking allowed across the full length of the edge
-Any fine cracks within the filter matrix may not be through-going
-Filters should be free from loose debris


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