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Evaluation of the Influence of Tool Coatings on the Machinability of the Ti6Al4V Alloy Using Gray Relational Analysis
 
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1
Faculty of Mechanical Engineering Department of Machine Tools and Mechanical Technologies Wroclaw University of Science and Technology Łukasiewicza 5, 50-371 Wrocław, Poland
 
2
Faculty of Mechanical Engineering Wroclaw University of Science and Technology Łukasiewicza 5, 50-371 Wrocław, Poland
 
These authors had equal contribution to this work
 
 
Corresponding author
Paweł Karolczak   

Faculty of Mechanical Engineering Department of Machine Tools and Mechanical Technologies Wroclaw University of Science and Technology Łukasiewicza 5, 50-371 Wrocław, Poland
 
 
 
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ABSTRACT
This paper presents a study of the turning of titanium alloy Ti6Al4V with uncoated and physically or chemically coated carbide blades. The indicators studied and measured were 3D surface roughness, cutting force, the shape of the resulting chips and the degree of blade wear. It was found that coating the cutting blades increased the cutting forces. More blade wear mechanisms also occur, including thermal and adhesive wear. The chemically applied coating makes it possible to obtain the best roughness of Sq and Sz. The coating of the cutting blades had no effect on the form of the chips produced. The Grey Relational Analysis (GRA) confirmed that the recommended blades for the machining of superalloys warranted better technological results for the machining Ti6Al4V alloy.
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