MACHINABILITY OF NICKEL AND TITANIUM ALLOYS UNDER OF GAS-BASED COOLANT-LUBRICANTS (CLS) - A REVIEW

Advanced materials like nickel and titanium have un ique combinations such as low thermal conductivity, high chemical reactivity and hardness. All of these properties are desirable to be used as suitable lubricant and proper cooling technique for increasing tool life, decreasing cutting temperature and impro ving surface roughness. This paper presents a liter ature review done on gasbased coolant-lubricants (CLs) which used in the fo rm either gas or cooled-pressured gases. Investigat ion of previous researches with different approaches which have been used on m achining operation that effect on cutting temperatu re, tool wear and surface roughness. As a result, gas-based coolant-lubricant s (CLs) has been determined as one of the most suit able cooling process for machining cutting operation in terms of improvement in tool life and surface roughness. Furthermore, t his type of cooling process is considered as one of environmentally conscious m achining. Index Terms: Gas-based coolant‐lubricants (CLs), ni ckel and titanium alloys, tool wear, surface roughn ess and integrity, green machining.

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