Open AccessIMPROVEMENT IN MACHINING PERFORMANCE OF INCONEL 718 WITH SOLID LUBRICANTS
Author(s) -
Sunil Kumar,
Dilbag Singh,
Nirmal S. Kalsi
Publication year - 2018
Publication title -
jurnal teknologi/jurnal teknologi
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.191
H-Index - 22
eISSN - 2180-3722
pISSN - 0127-9696
DOI - 10.11113/jt.v80.12563
Subject(s) - inconel , machining , materials science , dry lubricant , metallurgy , tool wear , superalloy , carbide , cutting fluid , surface roughness , lubricant , boron nitride , composite material , tribology , microstructure , alloy
From the last decade, the use of high corrosion resistance, high strength superalloys (mostly Ni- or Ti-based) at elevated temperature have significantly increased in aerospace or transport industry. Such materials are tremendously difficult to cut, develop a high temperature and deteriorate the quality of the components leading to tool wear. In place of using the cutting fluid, strict environmental limit develops new cutting methods or techniques for enhancing the tool life. This study demonstrates the performance of solid lubricants (hexagonal boron nitride and graphite) on surface quality. Tool geometry and cutting variables were selected for machining Inconel 718 with TiAlN-coated carbide inserts. The comparison has been conducted between solid lubricant assistant machining and dry machining. The studies demonstrate that the performance of solid lubricants is better than dry machining. There is 10% to 18% reduction in surface roughness with solid lubricants as compared to dry machining.