Air inlet mixer and casting process thereof

Abstract

The invention relates to a casting process for an air inlet mixer, which is characterized by comprising the following process steps of: (1) manufacturing an inner cavity sand core which is used for forming an inner cavity of the air inlet mixer and a shape sand core which is used for forming the shape of the air inlet mixer, and a dead head core; (2) performing sand shooting on the obtained inner cavity sand core and the shape sand core by a core shooter; (3) preparing a drag flask, placing the inner cavity sand core and the shape sand core in the drag flask, then filling sand, tightening and striking; preparing a cope box, placing the dead head core into the cope box, filling sand, tightening and striking; arranging a pouring gate between cavities of the drag flask and the cope box; turning the cope box on the drag flask, removing the dead head core and the shape sand core to obtain a sand mould; (4) evenly pouring molten aluminum from a dead head to obtain a casting, cooling the casting in the sand mould for 15-20 minutes, opening the box, removing the sand and taking out the casting; and (5) taking out the inner cavity sand core in the casting to obtain the air inlet mixer. The casting process has the advantages of reasonable structure of the mould and good casting effect.

Description

technical field [0001] The invention relates to an air intake mixer and a casting process thereof, belonging to the technical field of diesel engine components. Background technique [0002] The intake mixer is the intake pipe part of the natural gas-air mixer for diesel engines. The natural gas-air mixer can not only inhale enough natural gas according to the engine speed and load, but also inhale the amount of air required for the normal operation of the engine. The utility model can effectively guarantee the working performance of the diesel-natural gas dual-fuel engine, and at the same time has a simple structure and good use effect, is a creative improvement, and has remarkable economic and social benefits. [0003] There are two main types of mixers at present: one is a Venturi mixer and the other is a proportional mixer. The structure of the Venturi mixer is complex, the requirements for processing technology and processing consistency are very high, the manufacture ...

AI Technical Summary

Problems solved by technology

The structure of the Venturi mixer is complex, the requirements for processing technology and processing consistency are very high, the manufacture is difficult, and the cost is high

The proportional mixer has a simple structure and relatively low cost, but the mixing effect is not good

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