Abstract
This paper deals with a comparison of different materials to produce models for investment casting technology using additive manufacturing methods. The work is focused on three materials for FDM type printers, as well as two resins for SLA printing devices. To create a comprehensive image of each filament the materials are presented in terms of technology, the need for additional post processing, as well as physical and mechanical properties for each product.
Highlights
The manufacturing technique called investment casting using a wax model is a common centuries-old process. This type of casting production consists in making a wax model that is coated with a ceramic material
Almost any material can be applied to ceramic shells, which ensures a wide range of uses for this production process
After the models are burned out, no adhering material remains on the wall of the ceramic shell, but the correct processing of the shells made of POLYCASTTM parts involves rinsing and drying of the ceramic shell, as stated by the manufacturer
Summary
The manufacturing technique called investment casting using a wax model is a common centuries-old process. This type of casting production consists in making a wax model that is coated with a ceramic material. After the coating and drying process is completed, the wax is melted from the shell This is achieved in specialized devices to ensure the Flash melt effect. The melting of the top layer will provide space for the wax residue to expand during melting After this step, the shell is ready for annealing and subsequent casting. Almost any material can be applied to ceramic shells, which ensures a wide range of uses for this production process. Many companies are trying to develop a universal material that would not affect serial processes in foundries and could be implemented in production side by side with classic wax models. [6] [7]
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