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Surface roughness and tool wear on cryogenic treated CBN insert on titanium and Inconel 718 alloy steel

Thamizhmanii, Sivaprakasam and Hasan, Sulaiman (2013) Surface roughness and tool wear on cryogenic treated CBN insert on titanium and Inconel 718 alloy steel. In: International Conference on Production Engineering (ICPE2013), 30-31 May 2013, Tokyo, Japan.

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Abstract

Machining of materials by super hard tools like CBN and PCBN is to reduce tool wear to obtain dimensional accuracy, smooth surface and more number of parts per cutting edge. Wear of tools is inevitable due to rubbing action between work material and tool edge. However, the tool wear can be minimized by using super hard tools by enhancing the strength of the cutting inserts. One such process is cryogenic treatment. This process is used in all materials and cutting inserts which requires wear resistance. The cryogenic process is executed under subzero temperature -196 degree C for longer period of time in a closed chamber which contains liquid nitrogen. In this research, CBN inserts with cryogenically treated was used to turn difficult to cut metals like Titanium, Inconel 718 etc. The turning parameters used are different cutting speeds, feed rates and depth of cut. In this research, Titanium and Inconel 718 material were used. The results obtained are surface roughness, flank wear and crater wear. The surface roughness obtained on Titanium was lower at high cutting speed compared with Inconel 718. The flank wear was low while turning Titanium than Inconel 718. Crater wear is less on Inconel 718 than titanium alloy. All the two materials produced saw tooth chips and one reason for more crater wear formation while turning Inconel 718. More abrasion occurred on the flank side in turning Titanium than Inconel 718. The turning on Inconel 718 alloy steel formed built up edge in all the parameters. The formation of built up edge deteriorated the Inconel 718 alloy steel surface. More depth of cut did not affect the quality of machine surface, infact it produced smooth surface.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: cryogenic treatment; crater wear; flank wear; Inconel 718; surface roughness and titanium
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing and Industrial Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 23 Jul 2013 08:04
Last Modified: 23 Jul 2013 08:04
URI: http://eprints.uthm.edu.my/id/eprint/4040
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