Taking the manufacturing of an aluminium FIFA World Cup as an example

the rapid investment casting process of metal crafts based on FDM technology and PLA wire was described.A rapid investment casting process route for metal crafts combining with reverse engineering

3 Dprinting and traditional investment casting was established.The technical characteristics of FDM technology and PLA wire in model preparation were analyzed.The feasibility and rationality of process design were verified by production practice

and the key process parameters of main process procedures such as pattern making

shell making

dewaxing and pouring

were determined.The results reveal that the proposed technical scheme has strong operability

less process procedures

short production cycle

low manufacturing cost

environmental protection and energy saving.