Machinability experimental study of sintered alumina (Al2O3) ceramics material by chemical vapor deposition diamond coating milling tools

Document Type

Conference Presentation

Department

Mechanical Engineering

Conference Title

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture

Date of Presentation

9-1-2015

Abstract

The sintered alumina (Al2O3) ceramic materials featured with high temperature stability, excellent wear resistance, and high strength are highly in demand for various commercial applications. Alumina ceramics in the sintered state are difficult to machine owing to their high hardness. This research focuses on the study on the machinability of sintered alumina ceramic materials by using chemical vapor deposition diamond coating tools. Milling cutting tests are performed on a common 3-axis computer numerical control milling center. Four fluted tungsten carbide end mills with chemical vapor deposition diamond coating are utilized to machine alumina ceramics at different cutting speeds, feed rates, and widths of cut. The cutting process outcome is evaluated based on the machined surface's finish, tool wear and life, the material removal rate, and the cutting force. It is found that the milling machining process for alumina ceramic materials using chemical vapor deposition diamond coating tools is feasible with adequate machining conditions, and the machining outcome largely depends on the cutting conditions. Two alumina ceramics parts are also fabricated to demonstrate the feasibility of proposed machining processes. The details of the machining experiments and the obtained results are presented in this article.

ISSN

0954-4054

Volume

229

Issue

9

First Page

1535

Last Page

1546

DOI

10.1177/0954405414539496

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