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首页> 外文会议>European Powder Metallurgy Congress Exhibition >The Effect of L-PBF Process Parameters on Surface Quality and Mechanical Properties of H13 Hot Work Tool Steel
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The Effect of L-PBF Process Parameters on Surface Quality and Mechanical Properties of H13 Hot Work Tool Steel

机译：L-PBF工艺参数对H13热加工钢材表面质量和力学性能的影响

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Metal parts produced by Additive Manufacturing (AM) technologies typically suffer from poor surface quality, i.e. high surface roughness and porosity. Improving the surface quality could enable the manufacturing of components with little to no surface machining. In this research, we studied the effect of Laser Powder Bed Fusion (L-PBF) process parameters on the porosity and mechanical properties of H13 hot work tool steel. Optimized values for the core and border contour parameters were determined with a Design of Experiments approach using varying scanning speed, laser power and hatch distance parameters. The optimized process parameters were used to print samples for characterization. The experiments included microscopy analyses, surface roughness measurements and tensile testing. For comparison, some of the tensile specimens were machined to eliminate the effect of possible surface defects on the mechanical properties. The results suggest that a significant improvement in mechanical properties is achievable with optimized parameters.
机译：添加剂制造（AM）技术生产的金属部件通常遭受差的表面质量差，即高表面粗糙度和孔隙率。改善表面质量可以使得能够制造几乎没有表面加工的部件。在本研究中，我们研究了激光粉覆盖（L-PBF）工艺参数对H13热工床钢孔隙度和力学性能的影响。使用不同扫描速度，激光功率和舱口距参数的实验方法设计确定核心和边界轮廓参数的优化值。优化的过程参数用于打印样本以进行表征。实验包括显微镜分析，表面粗糙度测量和拉伸测试。为了比较，将一些拉伸样品加工以消除可能表面缺陷对机械性能的影响。结果表明，利用优化参数可实现机械性能的显着改善。

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