The effect of cryogenic cutting tools on machining difficult to cut material

Derani, Mohd Naqib (2012) The effect of cryogenic cutting tools on machining difficult to cut material. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

Material developments for the cutting tool is one of the most critical elements in metal cutting, have always been characterized by an increase in wear resistance to machine harder, tougher, or chemically reactive materials. In machining processes, a major quality related output is integrity of the machined part surface. In machining of difficult to cut material, a drastic decrease in tool-life makes the machining process even more difficult. Inconel 718 is a high strength thermal resistant material alloy which was used for this project. It contains hard particles making it a very difficult to machine. The difficulty of machining Inconel 718 leading to short tool life and poor surface roughness. This project describes a study on the effects of cryogenic treatment on tool wear and surface roughness of Inconel 718. The main aim of this study is to analyze the differences in tool performance between cryogenically treated and untreated PVD during face mill Inconel 718. The flank wear and crater wear on cutting tool are studied for specific operating parameters. It was found that at lower cutting speed, 20 and 30 m/min and lower feed rate, 0.05 and 0.08 mm/tooth, non-cryogenic PVD cutting tool is better compare to cryogenic PVD cutting tool in term of surface roughness and tool wear. At high cutting speed, cryogenic PVD produce low surface roughness and less tool wear. The optimum parameter that can be used to obtain low surface roughness and less tool flank wear for cryogenic PVD is 40 m/min and above.

Item Type:Thesis (Masters)
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA213-215.1 Engineering machinery, tools, and implements
T Technology > TJ Mechanical engineering and machinery > TJ1530-1570 Other special machinery
ID Code:2397
Deposited By:Normajihan Abd. Rahman
Deposited On:28 Mar 2012 16:39
Last Modified:28 Mar 2012 16:39

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