Investigation of Chip Formation and Tool Wear in Drilling Process Using Various Types of Vegetable-Oil Based Lubricants

Abstract

Cutting fluid is a well-known as one of an important element in machining process. However, the consumption of mineral oils as cutting fluid has been raising concern due to worldwide interest in environmental and health matters. The application of vegetable-oil based lubricant is seen can overcome the problem but requires a research study about the machinability. This research paper represents the machinability of using several possible vegetable oils as cutting fluid in term of chip formation and tool wear during drilling operation on stainless steel, AISI 316. In particular, the performance of the vegetable oils; palm, sesame, olive and coconut oils were compared under minimum quantity lubrication (MQL) technique. The result reported that the coconut oil indicates the best machinability in term of highest and uniform chip thickness and least wear on the drill bit under same condition with others. These performances are followed by palm, olive and sesame oil. In additional, the viscosity measurement indicates that coconut oil has the lowest value which can possesses better fluidity and faster cooling capacity than other oils. Overall, coconut oil is recommended as viable alternative lubricants during drilling of stainless steel.

Die and Punch Wear Reduction in Stamping Process by Lean Six Sigma Approach

“…In terms of cutting-edge maintenance, lubricants are used to extend the service life and prevent die and punch wear. In contemporary research, vegetable oils are frequently utilized instead of synthetic and mineral oils since they are more environmentally friendly and give superior outcomes in minimizing tool wear defects [16]. Most studies have indicated that coconut oil, aloe vera oil, and castor oil contribute to reduced tool wear compared to conventional cutting oils and have a high potential to minimize friction in low-speed machines [17][18][19].…”

Investigation of Chip Formation and its Grain Structure using Vegetable Oil Based Lubricants

“…Vegetable oils performed better as compared to mineral-based or semi-synthetic cutting oils. Fairuz et al, investigated the application of vegetable oils as a lubricant in drilling process to perceive the chip formation, tool wear and to predict weather coconut oil could give superior chip if used as lubricant in drilling process [5]. Rubio et al, worked on friction force between work material and tool used for making hole and concluded that sandwich type material was more appropriate for friction drilling process [6].…”

Comparative Analysis of Machining Stainless Steel using Soluble and Vegetable Oils as Cutting Fluids

“…Results show that Palm oil gave the highest thickness of 0.27mm due to its better lubricating property. The effect of use of vegetable-oil based lubricants on chip formation and tool wear in drilling processes has been investigated [14]. Result showed that coconut oil gave the best machinability and least wear on the drill bit under same condition with others.…”