Degassing type metal melt filtering device and using method thereof

Abstract

The invention discloses a degassing type metal melt filtering device and a using method thereof. The degassing type metal melt filtering device comprises a filtering box with an upward opening, a filtering piece and a degassing assembly; the filtering piece is arranged in the filtering box, the filtering piece divides an inner cavity of the filtering box into an upper liquid inlet cavity and a lower liquid outlet cavity, and the degassing assembly comprises a pressing plate and a vibration guide rod which are fixedly connected; the pressing plate is in surface contact with the upper surface of the filter sheet; and air exhaust holes are formed in the pressing plate. According to the degassing type metal melt filtering device and the using method thereof, the structure is reasonable, the pressing plate can prevent a metal melt from covering the filtering piece area under the pressing plate, and the vibration guiding rod and the pressing plate are matched to directly conduct vibration to the filtering piece, so part of gas in the filter piece and below the filter piece is gathered to an area right below the pressing plate and is emptied through filter holes and the exhaust holes below the pressing plate, the vibration strength is easy to control, the vibration is quickly transmitted, the breakage probability of the filter piece is low, and the time for infiltrating the filter piece by the metal melt can be shortened.

Description

technical field [0001] The invention relates to the field of metal casting, in particular to a degassing type molten metal filtering device and a using method thereof. Background technique [0002] The impurities in the metal melt will affect the casting quality, so the metal melt needs to be filtered through the open filter box before casting the mold. The open filter box mainly relies on the weight of the metal melt to make the metal melt pass through the filter; open filter The filter in the box is generally a ceramic filter. Before the casting starts, the ceramic filter needs to be dried, but there may be cases where the drying is not complete or it is placed for a certain period of time after drying. Because the metal melt has a certain viscosity and The filter has a thickness, so that the metal melt will first cover the entire upper surface of the filter, and the water vapor will expand and block the filter pores together with the air in the filter, causing the metal m...

AI Technical Summary

Problems solved by technology

The defective of [0004] prior art is: the first, filter box is made up of the inner cavity that metal shell and refractory material are made, and wherein metal shell and refractory material are unfavorable for vibrating Conduction makes it difficult to control the percussion force, and it is very easy to cause the percussion force to be too large, resulting in the ceramic filter or refractory material being shattered; second, the metal melt feed quickly covers the filter, even if the percussion filter box is used In the same way, the gas discharge rate is still slow, and the air in the filter cannot even be excluded.

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