Manufacturing of optimized technical surfaces through a process combination of stream finishing and laser ablation

通过流精加工和激光烧蚀的工艺组合制造优化的技术表面

• 批准号: 395790598
• 负责人: Professor Dr.-Ing. Volker Schulze
• 金额: --
• 依托单位: Institut für Produktionstechnik (WBK)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/395790598?language=en
• 关键词: Manufacturing; optimized; technical; surfaces; through

The aim of the research project is the design of an efficient process strategy for the process combination of laser ablation and stream finishing for the production of optimized technical surfaces with regard to component life using the example of a hydrodynamically lubricated plain bearing (bearing shaft made of the material 42CrMo4 and bearing shell made of the material 100Cr6). A high potential of the process combination of stream finishing for mechanical surface treatment and laser microstructuring for tribological optimization as an efficient post-processing process chain can be derived from the state of the art and our own preliminary work. However, the interactions between both processes and the resulting component states in the boundary layer are of elementary importance and have to be investigated. The hypothesis of increasing a bearings service life by the use of strain hardened and therefore more durable microstructures is to be verified within the scope of the planned project and the understanding of the mechanisms for the process combination is developed. For the investigations, the tribological properties of the plain bearing are of interest in addition to the surface topography, residual stress and strain hardening depth distributions in the boundary layer.

该研究项目的目的是设计一种有效的工艺策略，将激光烧蚀和流精加工相结合，以生产在部件寿命方面优化的技术表面，以流体动力润滑滑动轴承（轴承轴由材质为42CrMo4，轴瓦材质为100Cr6)。用于机械表面处理的流精加工和用于摩擦学优化的激光微结构的工艺组合作为高效的后处理工艺链的巨大潜力可以从现有技术和我们自己的前期工作中得出。然而，两个过程之间的相互作用以及边界层中产生的成分状态非常重要，必须进行研究。通过使用应变硬化从而获得更耐用的微观结构来延长轴承使用寿命的假设将在计划项目的范围内得到验证，并加深对工艺组合机制的理解。对于研究而言，除了表面形貌、残余应力和边界层中的应变硬化深度分布外，滑动轴承的摩擦学特性也很重要。

项目成果

Optimization of the stream finishing process for mechanical surface treatment by numerical and experimental process analysis

• DOI: 10.1016/j.cirp.2019.04.086
• 发表时间: 2019
• 期刊: CIRP Annals
• 作者: F. Zanger;Andreas Kacaras;P. Neuenfeldt;V. Schulze