Analysis of tool wear in face milling of alloy cast iron under constant material removal volume condition

摘要

Due to some special properties, alloy cast iron HTCuCrSn-250 is widely used to manufacture the cylinder block of the diesel engines. However, the additional alloying elements aggravated tool wear which is significantly affected by cutting parameters during machining process. In this paper, tool wear in face milling of alloy cast iron under constant material removal volume (MRV) condition was investigated. First, the relationship between tool flank wear (VB) and MRV was determined. Secondly, the wear morphology and mechanism were analyzed and a predicted model between cutting parameters and tool wear was proposed. Finally, the optimization was taken, and three groups of optimal parameters were obtained. This research illustrated that different combinations of cutting parameters result in different wear morphology and the main wear mechanisms are diffusion and oxidation. This research also indicated the two parameters, axial depth of cut and the radial depth of cut, which have significant impact on the tool wear. Meanwhile, a model between VB and the cutting parameters under the constant MRV condition during milling HTCuCrSn-250 was proposed.