Effect of Post-Process Machining on Surface Properties of Additively Manufactured H13 Tool Steel
Effect of Post-Process Machining on Surface Properties of Additively Manufactured H13 Tool Steel
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DOI：
10.3139/105.110359
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发表时间：
2018-08-01
影响因子：
0.6
通讯作者：
Denkena, B.
中科院分区：
文献类型：
--
作者：
Breidenstein, B.;Brenne, F.;Denkena, B.
工具钢AISI H13的特点是高耐磨性和良好的抗热冲击性。H13主要应用于压铸和锻造工具等领域。通过增材制造技术（例如选择性激光熔化（SLM））对H13进行加工，开辟了关于例如内部冷却通道的新设计可能性，以便改善操作期间的工具性能。然而，由于SLM造成的高表面粗糙度和不足的几何精度，通常需要额外的切割或成形工艺，导致零件的表面和表面下性质的改变。所提出的工作揭示了SLM处理和随后的端面铣削和/或深轧制操作对表面和次表面性能的发展的影响，并突出了足够的工艺窗口。
The tool steel AISI H13 is characterized by a high wear resistance and a good thermal shock resistance. H13 is mainly employed in applications such as tools for pressure die casting and forging. Processing of H13 by additive manufacturing techniques, such as selective laser melting (SLM), opens up new design possibilities with respect to e.g. internal cooling channels, in order to improve the tool performance during operation. However, due to high surface roughness and insufficient geometric accuracy imposed by SLM, additional cutting or forming processes are often required leading to an alteration of the surface and subsurface properties of the part. The presented work reveals the effect of SLM processing and subsequent face milling and/or deep rolling operations on the development of surface and subsurface properties and highlights adequate process windows.