Process for casting aluminum alloy air intake manifold

Abstract

The invention discloses a process for casting an aluminum alloy air intake manifold, which combines the tilting type casting process and the stepped type casting process. The process comprises the following technical measures: 1, determining the casting position of a casting, in which the air intake manifold casting adopts the vertically erected mode; and 2, designing a casting system in which the technical characteristics comprise: (1) arranging a plurality of internal casting gates between a spure and a mold cavity surface, arranging an auxiliary spruce on the upper part of a stable pressure box of the air intake manifold, and arranging a plurality of side risers on proper positions of the stable pressure box of the air intake manifold; and (2) arranging a casting liquid allocation baffle plate in a casting gate basin, and making the position of a charging port of the auxiliary spure on the bottom of the casting gate basin slightly higher than that of the charging port of the spruce. The process has the advantages that: by the arrangement of the auxiliary spure and the side risers on the mounting surface of the stable pressure box, the feeding action of the lateral surface is reinforced and the heat balance of the whole mold cavity is adjusted, which cannot be achieved by the common tilting type casting process, so that the finished product ratio of the casting is greatly improved.

Description

Technical field: [0001] The invention belongs to a metal type gravity casting process and relates to a pouring casting process of an aluminum alloy intake manifold. Background technique: [0002] The intake manifold is an important part of the engine. The shape of the part is unique, the pipeline structure is complex, and the thickness of the pipe wall varies. It can be said that the shape and thickness of the pipe wall on the engine vary the most. Because of its unique shape, complex shape, and different wall thicknesses, the manufacturing process of its castings is also very complicated, which brings great difficulty to the casting process. [0003] At present, most of the casting of the intake manifold is produced by the metal mold horizontal pouring gravity casting process or the tilting casting process. Although these two casting processes have their advantages, there are still many shortcomings. Due to the complexity of the pouring system in the horizontal pouring pro...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a pouring casting process for an aluminum alloy intake manifold that can overcome the poor filling ability, easy cold shut, and easy shrinkage defects for the above-mentioned deficiencies in the pouring casting process.

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