At present, sand castings inside passenger car engines mainly include cylinder block, cylinder head, bearing cover, exhaust pipe, valve cover, chain cover, etc. This chapter will study the rapid casting process design of an engine aluminum alloy cylinder head, an engine cast iron cylinder block and an aluminum alloy chain chamber cover.
The design process of sand casting and wax mold precision rapid casting can be roughly divided into the following three steps: first, the analysis of sand casting and the selection of casting process; The second is to design the gating system and process parameters of sand casting, and make full use of computer simulation software to verify and optimize the process; The third is the design of sand mold and the selection of rapid manufacturing process. In the selection of sand mold manufacturing process, the process selection will be based on the sand core structure of sand mold and combined with the characteristics of three kinds of sand mold rapid manufacturing processes.
Through sand casting process analysis and design optimization of engine aluminum alloy cylinder head, aluminum alloy chain chamber cover and cast iron cylinder block. By defining the database close to the actual mold parameters, the accuracy of simulation analysis is improved, the defect trend in the actual production of sand castings is predicted by simulation analysis, the solution is formulated, and the sand casting process is determined. At the same time, the casting parting design is completed, and the manufacturing process is formulated according to the characteristics of sand mold and sand core.