Method for composite-filtering multiple filter media in aluminum-alloy-melt centrifuge field
A technology of aluminum alloy melt and centrifugal force field, applied in the field of filtration, can solve the problems of high cost and high consumption, and achieve the effect of convenient operation and simple method
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Embodiment 1
[0016] The present invention is realized like this, method step is: Prefabricate a special-type cast iron sprue composed of a sprue and 4 outlet channels perpendicular to the sprue, and brush the zinc oxide-water glass coating inside the sprue. The axes of the 4 outlet channels are on a horizontal plane and form an angle of 90°; 4 pieces of porous ceramic filters are placed in each runner outlet channel, and the ceramic filters are stacked from the inside to the outside in the order of coarse porosity to fine porosity In the outlet channel, the innermost layer is a ceramic orifice plate with a hole size of Φ10mm; the second and third layers are foam ceramic filters with a hole size and thickness of 10ppi-20mm and 40ppi-20mm respectively; the fourth layer is ceramic granular Filter, the average size of ceramic particles is Φ2mm and the thickness is 30mm; The high temperature resistant ceramic sprue is fastened in the centrifugal device, and the axis of the sprue coincides wi...
Embodiment 2
[0018] The present invention is realized like this, method step is: Prefabricate a special-type cast iron runner composed of a sprue and an annular outlet channel coaxial with the sprue, and brush the zinc oxide-water glass coating inside the runner. There are 3 layers of cylindrical porous ceramic filters built in the annular runner. The first layer is a columnar ceramic cylinder with a diameter of Φ8mm and a column spacing of 7mm; the second and third layers are foam ceramic cylinders, and the hole size is the same as The thicknesses are 10ppi-20mm and 20ppi-20mm respectively. The fourth layer is a granular ceramic filter with an average diameter of ceramic particles of 2mm. When the high temperature resistant metal runner is placed in the centrifugal device, the axis of the sprue coincides with the rotation axis of the centrifugal device; Preheat the sprue to 1000°C before pouring; Start the centrifugal device, the rotating speed of the centrifugal device is in the ra...
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