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Experimental and numerical analysis of rotary tricone drill bit and its wear prediction

  • Manbodh Kumar Das
  • Shibayan Sarkar
  • Bhanwar Singh Choudhary
Technical Paper
  • 43 Downloads

Abstract

In this study, a three-dimensional model of unused drilling bit was prepared in CAD design modular and analyzed using the ANSYS workbench. Static and fatigue analysis was carried out, and wear-affected area was investigated through FEM. From the analysis, the maximum deformation and maximum von Mises stress obtained are 0.019492 mm and 435.11 MPa, respectively. During fatigue analysis, the minimum tool life was obtained as 2084.9 cycle life. During the microstructure analysis, wear phenomenon such as plastic deformation is visible at a higher magnification of 600× . Crack is visible at a lower magnification 200× . Furthermore, EDX analysis has also been done on samples prepared from unused and used tricone drilling bit. A higher variation of carbon (C) content by weight percentage of unused and used tricone drilling bit was observed which indicates reducing ductility and malleability of the material.

Keywords

FEM Rotary tricone drill bits Plastic deformation Crack SEM EDX 

Abbreviations

OCP

Open Cast Project

FEM

Finite element method

SEM

Scanning electron microscope

EDX

Energy-dispersive X-ray spectroscopy

EDS

Energy-dispersive spectroscopy

LHD

Load–haul–dump

WEDM

Wire electric discharge machine or wire-EDM

BCCL

Bharat Coking Coal Limited

rpm

Revolution per minute

WC

Tungsten carbide

Notes

Acknowledgements

Authors would like to acknowledge the authority of Dhansar Open Cast Project (OCP) coal mine of BCCL Dhanbad in Jharkhand for providing the data and sample from the site.

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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Authors and Affiliations

  • Manbodh Kumar Das
    • 1
  • Shibayan Sarkar
    • 1
  • Bhanwar Singh Choudhary
    • 2
  1. 1.Department of Mechanical EngineeringIndian Institute of Technology (ISM)DhanbadIndia
  2. 2.Department of Mining EngineeringIndian Institute of Technology (ISM)DhanbadIndia

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