Abstract
Fused deposition modeling (FDM) is one of the rapid prototyping technologies that can use plastic material, which can be effectively used for making patterns for investment casting. The surface finish of the investment casting depends upon the surface finish of the pattern. But the surface finish of the parts produced by using FDM is not very good as compared to wax patterns, which are conventionally used in investment casting. Therefore to use plastic patterns instead of wax, a technique is required to improve the surface finish of the FDM parts. It has been found that there are various methods to improve surface finish of plastic patterns made by FDM. These methods have been reviewed in this paper.
Highlights
Rapid prototyping (RP) systems were emerged in 1987 with the introduction of stereolithography technology, a process that solidifies layers of ultraviolet light-sensitive liquid polymer using laser technology
The Fused Deposition Modeling (FDM) is an RP technique in which a plastic or wax material is extruded through a nozzle that traces the part's cross sectional geometry layer by layer
Methods to Improve Surface Finish of Parts Produced by Fused Deposition Modeling investment casting process
Summary
Rapid prototyping (RP) systems were emerged in 1987 with the introduction of stereolithography technology, a process that solidifies layers of ultraviolet light-sensitive liquid polymer using laser technology. The most common non-wax material used in FDM is Acrylonitrile Butadiene Styrene (ABS) Like wax, this material can be used for making investment casting patterns. Methods to Improve Surface Finish of Parts Produced by Fused Deposition Modeling investment casting process. In FDM process the surface finish of the parts produced is found to be inferior as compared to wax and some other RP technologies. This is due to the resolution of the process which is dictated by the filament thickness [5].
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