Damaging of cemented carbide end mill with different grain sizes: experimental and simulation

Amirnasiri, Ali; Haghshenas, M.; Parvin, Nader

doi:10.1007/s12598-019-01327-x

Cited by 6 publications

(1 citation statement)

References 27 publications

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“…These geometric dimensions were able to define the shapes of the end mills. It can be seen from Figure 5 that all three coated tools had slightly rounded edges as they were only micro-blasted before coating, which was a result of the fine-grain sizes of the coating [43]. This contributed to an improvement in the mechanical properties and then affected the wear resistance, especially the abrasion and chipping wear during the machining process [44,45].…”

Section: Characterization Of Alcrn Coated Toolsmentioning

confidence: 99%

Enhancing Tool Performance in High-Speed End Milling of Ti-6Al-4V Alloy: The Role of AlCrN PVD Coatings and Resistance to Chipping Wear

He,

Saciotto,

DePaiva

et al. 2024

JMMP

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The conventional cutting tools used for machining titanium alloys normally experience rapid tool wear, and it is generally difficult to achieve a cutting speed over 60 m/min. In this paper, a comprehensive study on improving the machining of Ti-6Al-4V alloy is presented, focusing on high-speed end milling at 100 m/min. Three different AlCrN PVD-coated cemented carbide tools were employed over cemented solid carbide endmills. The study aimed to understand the factors influencing tool performance and, particularly, the uncommon tool wear behavior characterized by chipping on the rake face. The research methodology involves a detailed investigation of coating properties, mechanical characteristics, surface defects, and tool edge geometries. Mechanical properties were measured to assess the resistance to plastic deformation and impact fatigue fracture resistance. Surface defects were meticulously observed, and tool edge geometries were evaluated through optical microscopies. These analyses uncover the key factors contributing to the best tool performance, notably the resistance to plastic deformation (H3/E2 ratio), impact fatigue fracture resistance, and maintaining uniform tool edge geometries. The results of this study reveal that the moderate stress C3 coating outperformed the other two coatings, exhibiting a 1.5-times-longer tool life, a relatively stable cutting force curve, and favorable friction conditions in the cutting zone.

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Section: Characterization Of Alcrn Coated Toolsmentioning

confidence: 99%