Effect of wear progression in an 'S'-type mixed ceramic tool on machining forces and surface roughness in the turning of hardened AISI 4140 steel
by Jéferson Hilário W. Nicolodi; Luiz Airton Consalter; Orlando Durán; André J. Souza
International Journal of Machining and Machinability of Materials (IJMMM), Vol. 21, No. 3, 2019

Abstract: This study investigates the behaviours of machining forces and the roughness of a workpiece in the dry turning of AISI 4140 steel hardened at 55 HRC due to the wear evolution of a mixed ceramic tool with 'S'-type blade microgeometry. Six end-of-life tests were performed by combining three levels of cutting speed and two feed rate levels. A constant depth of cut was maintained. According to the results, the highest cutting speed and feed rates had a significant effect on the flank and crater wear of the tool and gradually changed the values of the forces and roughness. The feed rate was the parameter with the highest effect on the output parameters of the process. The crater wear evolution caused a reduction of the machining forces. Meanwhile, flank wear formation promoted an increase in the machining force components. From the point of view of the influence of tool wear processes, and, unlike what happens with flank wear, the crater formation affects favourably the surface roughness, as its evolution promoted the reduction of the R_a values in all cutting conditions.

Online publication date: Tue, 07-May-2019

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Machining and Machinability of Materials (IJMMM):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com