In the last years, Additive Manufacturing, thanks to its capability of continuous improvements in performance and cost-efficiency, was able to partly replace and redefine well-established manufacturing processes. This research is based on the idea to achieve great cost and operational benefits especially in the field of tool making for injection molding by combining traditional and additive manufacturing in one process chain. Special attention is given to the surface quality in terms of surface roughness and its optimization directly in the Selective Laser Melting process. This article presents the possibility for a remelting process of the SLM parts as a way to optimize the surfaces of the produced parts. The influence of laser remelting on the surface roughness of the parts is analyzed while varying machine parameters like laser power and scan settings. Laser remelting with optimized parameter settings considerably improves the surface quality of SLM parts and is a great starting point for further post-processing techniques, which require a low initial value of surface roughness.

在过去的几年中，增材制造凭借其不断提高的性能和成本效率的能力，能够部分替代和重新定义完善的制造流程。这项研究基于这样的想法，即通过将传统制造和增材制造相结合，在一个工艺链中实现巨大的成本和运营收益，特别是在注塑模具制造领域。就表面粗糙度及其直接在选择性激光熔化过程中的优化而言，对表面质量给予了特别关注。本文提出了对SLM零件进行重熔工艺的可能性，以优化生产零件的表面。在改变机器参数（例如激光功率和扫描设置）的同时，分析了激光重熔对零件表面粗糙度的影响。具有优化参数设置的激光重熔可以显着改善SLM零件的表面质量，并且是进一步后处理技术的一个很好的起点，后者需要较低的表面粗糙度初始值。