Research on the Surface Micro-configuration in Vibration Cutting Particle Reinforced Metallic Matrix Composites SiCp /Al
会议名称：《第十届国际制造工程与管理会议》
会议日期：2002年
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
基 金：State Key Laboratory of Metal Matrix Composites of Shanghai Jiaotong University Henan Natural Science Foundation (004040400) Doctor Foundation of Jiaozuo Institute of Technology
关 键 词：PCD tools composite SiCp/Al surface micro-configuration tool wear
摘 要：正 The cutting performance of particulate reinforced metallic matrix composites （PRM-MCs） SiCp/Al in ultrasonic vibration cutting and common cutting with carbide tools and PCD tools was researched in the paper. Microstructure of machined surface was described, the relation, between cutting parameters and surface roughness was presented, and characteristic of the surface remained stress was also presented. Furthermore, wear regularity and abrasion resistance ability of tools in ultrasonic vibration cutting and common cutting of PRMMCs were discussed in detail. The test results show- （1） The surface configurations are obviously different when using different tools to machine such PRMMCs. The surface machined with carbide tools looks luminous and orderly and there are seldom surface defects on it. The reason is that the soft basal body is apt to flow during cutting, therefore a layer of Al matrix film covers machined surface. On the contrary, the surface machined with PCD tools looks lackluster. But the profile of machined surface is very clear. Superfine grooves, pits and black reinforce particulates can be seen easily without obvious Al film. （2） Because of unstable cutting process in common cutting, the surface is easy to produce some defects such as burrs, built-up edges and so on so that the quality of surface becomes very poor. Vibration cutting can reduce the influence of tearing, plastic deformation and built-up edge in cutting and can restrain flutter so as to make cutting process more stable. Therefore, surface roughness of vibration cutting is better than that of common cutting. （3） There is an optimum value of feed rate in vibration cutting of PRMMCs due to the influence of material characteristics. Whether feed rate is more than or less than this optimum value, surface roughness will increase. （4） According to analyzing the wear rate of tools in vibration cutting PRMMCs, it can be concluded that abrasion resistance of tools will be improved remarkably whe