Surface roughness analysis after machining of direct laser deposited tungsten carbide

14th International Conference on Metrology and Properties of Engineering Surfaces

Wojciechowski, S.^1 ; Twardowski, P.^1 ; Chwalczuk, T.^1

Poznan University of Technology, Faculty of Mechanical Engineering, Piotrowo 3, 60-965 Poznan, Poland^1

关键词: 3-D surface topography;    Cubic boron nitride (cBN);    Direct laser deposition;    Geometric projections;    Machined surface roughness;    Machining methods;    Material removal;    Roughness analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/483/1/012018/pdf
DOI  :  10.1088/1742-6596/483/1/012018

来源: IOP

【 摘 要 】

In this paper, an experimental surface roughness analysis in machining of tungsten carbide is presented. The tungsten carbide was received using direct laser deposition technology (DLD). Experiments carried out included milling of tungsten carbide samples using monolithic torus cubic boron nitride (CBN) tool and grinding with the diamond cup wheel. The effect of machining method on the generated surface topography was analysed. The 3D surface topographies were measured using optical surface profiler. The research revealed, that surface roughness generated after the machining of tungsten carbide is affected by feed per tooth (fz) value related to kinematic-geometric projection only in a minor extent. The main factor affecting machined surface roughness is the occurrence of micro grooves and protuberances on the machined surface, as well as other phenomena connected, inter alia, with the mechanism for material removal.