View Full Document

Performance Studies of Alumina TiC-based Ceramic Tool Inserts



View the full content.
View Full Document
View Full Document

5 views

Unformatted text preview:

1 Performance Studies of Alumina TiC based Ceramic Tool Inserts when Turning Tool Steels V C Venkatesh Z A Ahmad and M Konneh Faculty of Mechanical Engineering Universiti Teknologi Malaysia 81310 UTM Skudai Johor Bharu Malaysia Abstract Investigation in this paper is devoted to evaluating the cutting performance of two alumina TiC based ceramic cutting tools having negative side cutting edge angles SCEA s of 50 CNG and 10 TNG by finish turning two tool steels Experimental studies were carried out at various cutting speeds feeds and depths of cut in dry conditions The cutting performance of the alumina based ceramic tools was judged by the cutting force produced during the process of machining and by the surface roughness of the workpieces The influence of the cutting parameters that is the cutting speed feed and depth of cut on the cutting performance is discussed The higher negative SCEA of 50 generally works better for the tool steels than the 10 Turning with ceramics compares favourably with alternative machining processes normally used in the fabrication of die and moulds Keywords Ceramic cutting tools alumina surface roughness cutting force tool performance turning tool steels 1 Introduction To achieve the desired production and economic advantages in aerospace automotive and steel industries more refractory cutting tools like ceramics are required The refractory nature of Al2O3 ceramic tools coupled with their high wear resistance high compression strength has necessitated their use at much higher speeds than possible with cemented carbides 1 Although ceramic tool materials have certain specialized properties which necessitate their use for high speed machining and hard part turning they have certain drawbacks The mechanical and thermal properties low toughness being the major deficiency of the tools subject them to an unpredictable tool performance which is undesirable in today s manufacturing undertakings Strength thermal shock resistance and particularly



Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Performance Studies of Alumina TiC-based Ceramic Tool Inserts and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Performance Studies of Alumina TiC-based Ceramic Tool Inserts and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?