Casting equipment

Abstract

The present invention relates to an integrated equipment for aluminum alloy refining and casting, in which a holding furnace is divided into two furnace chambers, that is, fluid refining chamber and pressure casting chamber. After being refined in the fluid refining chamber, aluminum fluid doesn't contact air so that it will not be reoxidized, enabling manufacture of casts with fine quality. Meanwhile, immersing electric heating is employed in the holding furnace of the present invention to improve the temperature uniformity of aluminum fluid and the heating efficiency. After completing the pressure casting, the inert gas at high temperature will not be discharged directly into the atmosphere but into a gas tank so that it can be reused after being purified, improving utilization rate of resource and energy.

We claim: 
     
         1 . A casting equipment comprising a low pressure casting machine and a mould, characterized in that the body frame ( 1 ) of the low pressure casting machine is mounted with the mould ( 2 ), and the body frame ( 1 ) of the low pressure casting machine is mounted with a holding furnace ( 4 ) at its lower portion; the holding furnace ( 4 ) is divided into two furnace chambers, that is, fluid refining chamber ( 4 - 1 ) and pressure casting chamber ( 4 - 2 ), the two furnace chambers are connected at their lower portions through a passage with a gate valve ( 13 ) and a filter ( 14 ); the two furnace chambers are each provided with immersing electric heaters ( 12 ) at their lower portions, and the fluid refining chamber ( 4 - 1 ) is provided at its bottom portion with permeable bricks ( 15 ) at regular intervals, which bricks are connected with a compressed inert gas tank via an intake tube ( 9 ) having an electric proportional valve B ( 10 ); the fluid refining chamber ( 4 - 1 ) is provided at its middle-upper portion with a furnace gate ( 16 ); the two furnace chambers are connected at their upper portions through a connecting pipe ( 17 ) having an electric valve ( 18 ); the pressure casting chamber ( 4 - 2 ) is connected at its upper portion with the sprue of the mould ( 2 ) through the lifting tube ( 7 ) and a suction tube ( 3 ), and the lifting tube ( 7 ) is provided at its lower portion with a filtering screen ( 8 ); the pressure casting chamber ( 4 - 2 ) is provided at its upper portion with a pressure relief tube ( 5 ) having an electric proportional valve A ( 6 ), which tube is connected with a gas tank.