ceramic foam filter is to be used in removing unwanted impurities and contaminants from molten metal. Category: 1.Silicon carbide ceramic foam filter apply to improve quality of nodular graphite iron castings,grey iron castings,tenacity iron castings,drop turbulent of iron solution at feeder mouth. worked at 1500 centigrade degree. 2.Zirconia ceramic foam filter apply to purge solution of carbon steel,steel alloy and stainless steel.worked at 1700 centigrade degree. 3.Alumina ceramic foam filter apply to improve quality of aluminium and aluminium alloy casting and other non-ferrous alloy casting. worked at about 1100 centigrade degree. the function is: 1.Mechanic detering: removing big grain foreign oxide matter. 2.Filter function:filter small grain foreign oxide matter. 3.Deep absorbadility:absorb little foreign matter. mutated function:Turbulent-laminar flow 5.Prevent form of whirlpool,avoid engulf bleb. 6.Relax impact,decrease drop gravel. after use, we can get: 1.availably improve up grade products. 2.ameliorate structure of crystalloid of metal products. 3.improve function of machine of metal products. 4.predigest moulding system.