Abstract
The wear of high speed steel cutting tools during milling, twist drilling, bandsawing and power hacksawing has been studied. Five major wear mechanisms were identified: (1) edge chipping and blunting; (2) abrasion; (3) mild adhesive wear; (4) severe adhesive wear; (5) continuous wear. The relative intensities of these five mechanisms were found to be determined by the particular combination of cutting parameters, work material and cutting operation being used. In contrast, a variation in the chemical composition or in the microstructure of the high speed steel tool material generally did not change the dominant wear mechanism. However, the tool material properties determine the resistance against the operating wear mechanism and, therefore, they determine the tool life. In this paper a discussion on how the cutting conditions affect the relative intensities of the different wear mechanisms is presented. Also, results from comparative tool material testing and metallographic analysis of worn tools are combined to give a qualitative description of the microstructural parameters that promote wear resistance against each individual wear mechanism. Taken together, this information can be used to provide guidelines for selection of the optimum high speed steel grade in a specific application.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
