The performance of PCD tools in high-speed milling of Ti6Al4V
The performance of PCD tools in high-speed milling of Ti6Al4V
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DOI：
10.1007/s00170-010-2804-2
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发表时间：
2011-02
期刊：
影响因子：
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通讯作者：
G. Oosthuizen;G. Akdogan;N. Treurnicht
中科院分区：
文献类型：
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作者：
G. Oosthuizen;G. Akdogan;N. Treurnicht
传统刀具的刀具性能较差，并且当用于在提高的切削速度下铣削钛合金时是主要的限制。在这些高切削速度下，Ti6 Al 4V的化学和机械性能导致复杂的磨损机制。本文对一种细晶粒聚晶金刚石（PCD）端铣刀进行了试验，并对其磨损性能进行了研究。的PCD刀具的性能进行了研究，在刀具寿命，切削力和表面粗糙度。PCD刀具产生更长的刀具寿命比涂层硬质合金刀具在切削速度高于100米/分钟。一个较慢的磨损进展被发现与切削速度的增加，而规范是在提高速度的刀具磨损指数增加。基于扫描电子显微镜（SEM）和能量色散谱（EDAX）分析的观察表明，工件的粘附是磨损的主要类型，之后，由于高温降解与磨损的综合作用，可能会加速工具的降解。
Tool performance of conventional tools is poor and a major constraint when used in milling titanium alloys at elevated cutting speeds. At these high cutting speeds, the chemical and mechanical properties of Ti6Al4V cause complex wear mechanisms. In this paper, a fine-grain polycrystalline diamond (PCD) end mill tool was tested, and its wear behavior was studied. The performance of the PCD tool has been investigated in terms of tool life, cutting forces, and surface roughness. The PCD tool yielded longer tool life than a coated carbide tool at cutting speeds above 100 m/min. A slower wear progression was found with an increase in cutting speeds, whereas the norm is an exponential increase in tool wear at elevated speeds. Observations based on scanning electron microscope (SEM) and energy dispersive spectroscopy (EDAX) analysis suggest that adhesion of the workpiece is the wear main type, after which degradation of the tools accelerates probable due to the combined effect of high temperature degradation coupled with abrasion.