The performance of PCD tools in high-speed milling of Ti6Al4V
2011 (English)In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 52, no 9-12, 929-935 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2011. Vol. 52, no 9-12, 929-935 p.
Milling, Tool wear, High speed, Thermal softening, Ti6Al4V, PCD tool
Production Engineering, Human Work Science and Ergonomics
IdentifiersURN: urn:nbn:se:kth:diva-32188DOI: 10.1007/s00170-010-2804-2ISI: 000287497200008OAI: oai:DiVA.org:kth-32188DiVA: diva2:409509
QC 201104082011-04-082011-04-082011-04-28Bibliographically approved