Some aspects of the wear of polycrystalline diamond tools in rock removal processes

Hibbs, L.E.; Lee, M.

doi:10.1016/0043-1648(78)90116-3

Cited by 22 publications

(10 citation statements)

References 2 publications

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“…All of the above being reminiscent of tool wear in metal cutting. Hibbs and Lee (1978) used a setup akin to metal turning in order to study the wear behavior of polycrystalline diamond, PCD, cutters while cutting sandstone. A fundamental cutting investigation by Okubo et al (1999) compared tool bit wear and cutting mechanism of 47 rock samples with those in mortar and metal cutting applications.…”

Section: Introductionmentioning

confidence: 99%

Compact core drilling in basalt rock using PCD tool inserts: Wear characteristics and cutting forces

Hamade

Manthri

Pušavec

et al. 2010

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 99%

Compact core drilling in basalt rock using PCD tool inserts: Wear characteristics and cutting forces

Hamade

Manthri

Pušavec

et al. 2010

Journal of Materials Processing Technology

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“…• macroscopic failure which was believed to be the result of the impact shock fatigue (very similar to failure mode (ii) reported by Hibbs et al [99,100]),…”

Section: Drag Pick Cutterssupporting

confidence: 63%

Stiffness and Strength of Rock Cutting and Drilling Tools – Drag Bit and Roller Disc Cutters

Serati¹

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Rock cutting with mechanical cutting tools, such as disc cutters and drag picks, offers substantial prospects for excavation industries as it provides a continuous, automated, safe and cost-effective method of rock fragmentation. Over the last few decades, advances in mechanical excavators have focused mainly on developing relationships between the cutting force and the cutting parameters Publications during candidature

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“…Hibbs and Lee conducted a study into the wear mechanisms that operate when PCD is used in a rock removal process [57]. They used very coarse-grained PCD, approximately 100- m grain size, to cut a helical groove in a mortar rock cylinder containing hard particles of quartz.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 17. Resistance of grain boundaries to fracture and abrasion after rock drilling shown by Hibbs and Lee[57]. Panel (a) shows that a grain boundary has not preferentially fractured despite being close to the cutting edge and panel (b) shows that there is no preferential abrasion of a grain boundary parallel to the cutting direction.…”

mentioning

confidence: 99%

The influence of microstructure on the mechanical properties of polycrystalline diamond: a literature review

Scott

2017

Advances in Applied Ceramics

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Polycrystalline diamond (PCD) is an extremely high-performance cutting tool material used in the machining of rock, high-strength, non-ferrous metal alloys and carbon-fibre-reinforced composites. It is favoured for its exceptional hardness and wear resistance which results in at least an order of magnitude improvement in performance over previous technologies in almost all metrics. However, PCD suffers from unpredictable brittle fracture and degradation at high temperature during service which limits its capabilities in cutting applications. The literature on the link between its microstructure and its mechanical properties, including strength, toughness and flaw size distribution as measured by pseudo-static tests, is investigated. The conclusions of the seminal paper on this topic are re-examined in the light of modern ceramics research and an alternative explanation is put forth for the strengthgrain size relationship published in this paper. All known literature values for strength and toughness vs. grain size and binder content are collated showing no overall trend in strength with binder content but moderate trends in all other combinations. The common claim of weak grain boundaries is brought into question in the light of the lack of any evidence of this fracture mode being evident in pseudo-static tests. The industrial literature on wear testing and failure modes of PCD in service and service-like tests is examined to bridge the gap between pseudo-static and dynamic, application-based experiments. Six main failure modes are recorded and summarised with intergranular fracture being the most conspicuously absent from the pseudo-static tests. It is suggested that the temperature generated by friction in dynamic tests causes the weakening of grain boundaries, resulting in a transition from transgranular to intergranular fracture and a call for further research in this area is made.

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Some aspects of the wear of polycrystalline diamond tools in rock removal processes

Cited by 22 publications

References 2 publications

Compact core drilling in basalt rock using PCD tool inserts: Wear characteristics and cutting forces

Compact core drilling in basalt rock using PCD tool inserts: Wear characteristics and cutting forces

Stiffness and Strength of Rock Cutting and Drilling Tools – Drag Bit and Roller Disc Cutters

The influence of microstructure on the mechanical properties of polycrystalline diamond: a literature review

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