Journal
TRIBOLOGY INTERNATIONAL
Volume 143, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2019.106084
Keywords
Cryogenic drilling; Inconel 718; Tool wear; Hole quality
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Funding
- SERB-DST, Government of India [ECR/2016/000735]
- National Natural Science Foundation of China [51922066]
- Major projects of National Science and Technology [2019ZX04001031]
- Natural Science Outstanding Youth Fund of Shandong Province [ZR2019JQ19]
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education
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In this paper, the research effforts have been made to discover the potential of cryogenic machining as a sustainable manufacturing process for drilling of Inconel 718 superalloy. The drilling performance is investigated in terms of thrust force, torque, tool wear, chip morphology and hole quality (circularity -CIR, cylindricity -CYL, and surface roughness - R-a values). The experimental result shows temperature-dependent tool wear drastically reduced under cryogenic drilling as compared to dry drilling, and this leads to a reduction in torque values up to 30%. Furthermore, the cryogenic drilling improves tool life up to 87.50% and produce better quality holes due to a decrease in CIR deviations (up to 51%), CYL deviations (up to 77%), and R-a values (up to 48%).
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