A molding process based on 3D printing cast aluminum alloy cylinder head

Abstract

The invention provides a forming process of a cast aluminum alloy cylinder head based on 3D printing. The forming process comprises the following steps that parting treatment is carried out on the complex aluminum alloy cylinder head, SLS wax mold printing and 3DP sand core printing are carried out on the aluminum alloy cylinder head which is subjected to parting treatment, a wax mold is treated to prepare a gypsum mold, sand core treatment is carried out, a cavity is formed through a gypsum mold baking process, the cavity obtained through baking and the treated sand core are accurately installed through treating methods such as vacuum refining, vacuum pouring and pressurizing condensation, and the complex aluminum alloy cylinder head is obtained. According to the forming process, the advantages of 3D printing, a sand mold casting process and a gypsum mold casting process are given full play to, the purpose of high-quality rapid mold-free manufacturing of the aluminum alloy cylinder head is achieved, compared with an existing manufacturing method, the complex aluminum alloy cylinder head is manufactured more easily, the production size precision is high, and the surface quality andthe internal quality are good.

Description

technical field [0001] The invention belongs to the field of metal casting molding technology, and in particular relates to a molding technology based on 3D printing casting aluminum alloy cylinder head. Background technique [0002] The internal structure of the aluminum alloy cylinder head is complicated, and the size and internal quality requirements are very high. Generally, the aluminum alloy cylinder head is produced by opening a metal mold, which has a long production cycle and high cost; the rapid production of the aluminum alloy cylinder head adopts The most important thing is to print sand molds and sand cores separately, and then carry out multi-block core assembly, and then carry out sand mold gravity casting or low-pressure casting. The quality of the cylinder head produced by this method is poor, the dimensional accuracy is lower than C10, and the finish is lower than Ra12.5 , there are a large number of internal defects, and there are often problems with assem...

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Problems solved by technology

[0003] In view of the above, the purpose of the present invention is to provide a molding process based on 3D printing cast aluminum alloy cylinder head, which solves the problem of aluminum alloy cylinder head by parting and processing complex aluminum alloy cylinder head, combined with 3D printing technology and various auxiliary processes. The internal quality problem of the cylinder body of the cover

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