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A study on PDC drill bits quality

Yahiaoui, Malik and Gerbaud, Laurent and Paris, Jean-Yves and Denape, Jean and Dourfaye, Alfazazi A study on PDC drill bits quality. (2013) Wear, 298-299. 32-41. ISSN 0043-1648

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.wear.2012.12.026


The quality of innovating PDC (Polycrystalline Diamond Compact) bits materials needs to be determined with accuracy by measuring cutting efficiency and wear rate, both related to the overall mechanical properties. An original approach is developed to encompass cutting efficiency and wear contribution to the overall sample quality. Therefore, a lathe-type test device was used to abrade specific samples from various manufacturers. Post-experiment analyzes are based on models establishing coupled relationships between cutting and friction stresses related to the drag bits excavation mechanism. These models are implemented in order to evaluate cutting efficiency and to estimate wear of the diamond insert. Phase analysis by XRD and finite element simulations were performed to explain the role of physicochemical parameters on the calculated quality factor values. Four main properties of PDC material were studied to explain quality results obtained in this study: cobalt content in samples that characterizes hardness/fracture toughness compromise, undesired phase as tungsten carbide weakening diamond structure, diamond grains sizes and residual stresses distribution affecting abrasion resistance.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S0043164812004541
HAL Id:hal-00919880
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Armines (FRANCE)
Other partners > Mines ParisTech (FRANCE)
Other partners > Varel Europe (FRANCE)
Laboratory name:
Agence Nationale de la Recherche
Deposited On:17 Dec 2013 13:28

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