The production cycle and production cost of newly developed products have always been the weakness of traditional casting methods.In order to ensure the qualification of the first trial production of the newly developed castings,the blank shape was simplified,and the casting process was designed.The inner cavity of the castings was formed by 3D printing sand core,and the shape of the castings was machined after pouring.The simplified mold processing took a total of 15 days,synchronous 3D printing of the sand core,and about one week for each casting to print the shell core.If the external structure of the shell is changed,the mold can continue to produce castings.If the oil circuit in the inner cavity is changed,3D printing can be used to re-print,which greatly reduces the production cost and provides a strong guarantee for scientific research and production.
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