Selective Laser Sintering Machine

手头的提案主题是大型零件的工业3D打印系统，该系统使用SLS工艺生产具有高表面和结构质量的高复杂性塑料部件。聚酰胺选择性激光烧结（SLS）是一种零件和机器部件的制造工艺，可以制造非常复杂的几何形状，满足负载能力和强度方面的最高要求，与使用注射成型工艺制造的部件直接相当。这意味着制造工艺比许多其他增材制造工艺具有很大的优势。另一个特殊的特点是，在制造过程中不需要通常需要的支撑结构，因此不仅可以制造单个零件，而且可以同时制造大量零件。这使得该过程具有极高的生产力和成本效益。在流体力学系，德国机械工程学院唯一的全身磁共振成像机用于研究技术和非技术三维流动。为了避免在MRI中出现任何金属物体，需要用塑料制成的流动模型。使用SLS，可以充分利用基于磁流变的流量测量技术的所有优势：可以在短时间内测量许多不同的模型/配置，可以研究高度复杂几何形状的流动，由于可以在一夜之间构建新模型或模型组件，可以实现快速的开发周期。激光烧结聚酰胺组件的机械性能确保了核磁共振成像机中含水组件的最高故障安全性。

The subject of the proposal at hand is an industrial 3D printing system for large parts, which uses the SLS process to produce components of high complexity with high surface and structural quality in plastic. Selective laser sintering (SLS) of polyamide is a manufacturing process for parts and machine components with which very complex geometries can be manufactured that meet the highest demands in terms of load capacity and strength and are directly comparable to components manufactured using the injection molding process. This means that the manufacturing process has great advantages over many other additive manufacturing processes. Another special feature is the fact that the otherwise usually required support structure is not needed in the manufacturing process and therefore not only individual parts, but a very large number of parts can be manufactured at the same time. This makes the process extremely productive and cost-efficient. At the Department of Fluid Mechanics, the only whole-body magnetic resonance imaging machine in Germany at a mechanical engineering faculty is operated to investigate technical and non-technical three-dimensional flows. The need to avoid any metal objects in the MRI requires flow models made of plastic. With the SLS, all advantages of MR-based flow measurement techniques can be optimally used: Many different models / configurations can be measured in a short time, flows in highly complex geometries can be investigated, fast development cycles can be realized due to the possibility to build new models or components of models overnight. The mechanical properties of the laser-sintered polyamide components ensure the highest possible failure safety of the water-bearing components in the magnetic resonance imaging machine.