The aim of the investigations presented in this research work is to optimize the cutting geometry for drilling of Heat Resistant Austenitic Stainless Steel (HRASS) based on the tool life and strain hardening generated on the work material during cutting process. In particular, an attempt has been made to understand the effect of cutting edge preparation on both the cutting forces and the strain hardening of the work material. Besides, chips in flutes are also analyzed by tomography technique to better understand their evacuation in-situ in correlation with the cutting forces. A Quick-Stop Device (QSD) in drilling is also employed to analyze the influence of the cutting edge radius, the coating material, and the cutting fluid nature on the strain hardened layer using micro hardness filiations.

这项研究工作的目的是根据切削过程中刀具寿命和在工作材料上产生的应变硬化来优化耐热奥氏体不锈钢（HRASS）钻孔的切削几何形状。特别地，已经尝试理解切削刃准备对切削力和工作材料的应变硬化的影响。此外，还通过层析成像技术分析了排屑槽中的切屑，以更好地了解其与切削力的关系。钻孔中的快速停止设备（QSD）也用于使用微硬度纤丝分析切削刃半径，涂层材料和切削液性质对应变硬化层的影响。