Analysis of the evolution of the Built-Up Edge and Built-Up Layer formation mechanisms in the dry turning of aeronautical aluminium alloys

摘要: Abstract Tool wear is one of the main parameters employed for evaluating tool life, due to its influence in loss quality manufactured parts. So, minimising possible maximise life and optimise manufacturing performance. Different mechanisms can cause a specific machining process. Adhesion that be present wider range cutting temperatures. This type produced by two different ways. On hand, direct adhesion caused incorporation particles chips. other secondary fragment workpiece material tool. affects First, geometry changes incorporation. In second place, when these fragments are removed, they drag out causing wear. Indirect located edge, giving rise Built-Up Edge (BUE) and/or rake face Layer (BUL). BUL BUE formation their evolutions quality. this paper study mechanisms, evolution on dry turned aeronautical workpieces surface has been achieved. particular, developed using aerospace aluminium alloys such as UNS A92024 (Al–Cu) A97050 (Al–Zn). Results have shown formed mechanical mechanism. initially thermo-mechanical causes. However, detected consequence extrusion process BUE. Changes related with observed roughness profile machined pieces evaluated through average roughness, Ra. first relationship between effects finish worked samples found. Obtained results confirmed position angle reduction