Tribologische Optimierung der Gestalt und Beschichtung von Führungsleisten für das BTA-Tiefbohren von hochlegierten Stählen

该项目的继续是必要的，以获得更多的专业知识，在摩擦学优化的导向垫的BTA深孔钻。在该项目中，开发了一种新的工艺链。该链条包括具有减摩ta-C的涂层。此外，前处理和后处理是通过微细加工实现的。该工艺在精加工未涂覆的基板时实现轴向引入区域的限定形状优化。作为后处理的精加工负责有效去除涂层缺陷。改进后的导向垫的磨损性能明显优于传统导向垫的磨损性能。一个最佳的工艺策略已被开发，它允许通过微精加工基板的导向垫的形状优化。然而，关于涂层，没有足够的信息的相关性的涂层特性和BTA过程中的磨损行为。因此，有必要对更多涂层进行基本分析，并应在项目的第二阶段进行。此外，通过微精加工的导向垫的形状优化的有效性应通过使用其他涂层来分析。

The continuation of this project is necessary to gain more expertise in the tribological optimization of guide pads for the BTA deep hole drilling. In this project a new process chain has been developed. This chain includes the coating with friction reducing ta-C. Moreover, the pre- and aftertreatmentis realized by microfinishing. This process effects a defined shape optimization of the axial lead-in-area when finishing the uncoated substrate. The finishing as an after-treatment is responsible for an effective removal of coating defects. The wear behavior of the modified guide pads is significantly better than the wear behavior of conventional pads. An optimum process strategy has been developed which allows for the shape optimization of the guide pads by microfinishing the substrate. However, concerning the coating, there is no sufficient information about the correlation of the coating characteristics and the wear behavior in the BTA process. Thus, a fundamental analysis with a bigger number of coatings is necessary and should be conducted within a second phase of the project. Moreover, the effectiveness of the shape optimization of guide pads by microfinishing should be analyzed by the use of other coatings.