Research on direct rapid manufacturing of 316L fine metal part using fiber laser

In order to study the application of fiber laser in direct manufacturing of 316L stainless steel fine part by selective laser melting(SLM),a fiber laser was focused to a minimal fine spot size of 30μm~50μm on the work plane of the SLM system by means of a beam expander and f-θ lens.After analyzing some SLM experiment results under different conditions of defocus,laser power,scanning speed and path,the effect of the above parameters on the part prototyping accuracy was found.The analysis result shows that a stainless 316L part with minimal thin wall of 0.1 mm can be built through optimization of processing parameters and scanning path.