Title

Stress Analyses of CBN Insert in Hybrid Machining of RBSN Ceramic

Document Type

Article

Publication Date

3-2004

Publication Title

Machining Science and Technology

Volume

8

Issue

1

First page number:

1

Last page number:

19

Abstract

This article investigates the significant improvement in cutting tool life in machining of Reaction Bonded Silicone Nitride (RBSN), using cryogenic coolant. A finite element model is developed to analyze stress distributions in the Cubic Boron Nitride (CBN) cutting inserts used in a hybrid turning process. The analysis reveals that the decrease in cutting tool temperature caused by cryogenic cooling leads to a decrease of stresses in the cutting tool, especially when micro-cracks are present. It is found that a decrease in temperature from 1740 to 788 degrees C leads to approximately 56% stress reduction at the flank face of the cutting tool.

Keywords

Boron nitride; CBN; Cutting tools; RBSN; Hybrid machining; Machining; Silicon nitride; Strains and stresses; Stress analyses

Disciplines

Manufacturing | Materials Science and Engineering | Mechanical Engineering | Mechanics of Materials | Process Control and Systems

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Identifier

DOI: http://dx.doi.org/10.1081/MST-120034238

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