Investigation of Dimensional Accuracy & Surface Roughness of Parts Made by Metal RPT

The direct metal laser sintering (DMLS) process gives designers the possibility to build parts of almost any complexity in a wide range of metallic materials. However, as a relatively new technique, it is still in the development stage as the resulting properties of the sintered metallic parts are not yet strong enough for many industrial applications. The aim of this research is to improve the overall performance of the DMLS process by optimizing the control of process parameters that have very strong influence on the quality of the built part. The purpose of this dissertation work that doing different experiments on DMLS machine at different levels by varying orientation and layer thickness with the help of Taguchi L8 method for optimization by response surface methodology. It can be concluded as the best parameter set for dimensional accuracy for Stainless steel (SS316) material. To identify the effective parameters for mentioned response through ANOVA table. The mathematical equation for responses for predicting value in future will be generated by regression analysis.