Low-pressure casting and manufacturing technology of aluminum alloy cylinder part

Abstract

The invention discloses a low-pressure casing and manufacturing technology of an aluminum alloy cylinder part. Aluminum alloy materials adopted in the technology comprise, by mass, 6.0 percent to 7.0 percent of Si, 0.3 percent to 0.5 percent of Mg, 0.1 percent to 0.2 percent of Ti, 0.05 percent to 0.15 percent of Fe and the balance of Al. After the materials are melted, thinned, metamorphosed and refined, low-pressure cast moulding is carried out on the materials. Through the liquid ascending, mould filling, pressure maintaining and pressure relieving processes of the low pressure casting, a casting is formed in a mould cavity. After solution treatment and non-complete artificial aging heat treatment are carried out on a casting blank, the low-pressure casing and manufacturing technology has the advantages that the structure is compact, casting defects of pores, porosity shrinkage, cavity shrinkage, slag inclusion and the like are solved, the casing quality is improved, meanwhile, the machining allowance of the casting is small, the material utilization rate is improved, and the manufacturing cost is reduced.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a low-pressure casting preparation process of an aluminum alloy cylinder part. [0003] Background technique [0004] The casting of aluminum alloy cylinder parts requires at least the steps of configuring aluminum alloy, melting, mold clamping, and reinforcement. In the current pouring process of aluminum alloy cylinder parts, the finished castings are not hard enough, have large pores, and shrinkage and shrinkage cavities It is more serious, not only the casting process is more, which affects the production capacity, but also the scrap rate is high. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the purpose of the present invention is to provide a low-pressure casting preparation process for aluminum alloy cylinder parts, which can directly cast aluminum alloy ...

AI Technical Summary

Problems solved by technology

[0004] The casting of aluminum alloy cylinder parts requires at least the steps of configuring aluminum alloy, melting, mold clamping, and reinforcement. In the current pouring process of aluminum alloy cylinder parts, the finished castings are not hard enough, have large pores, and shrinkage and shrinkage cavities It is more serious, not only the casting process is more, which affects the production capacity, but also the scrap rate is high