Thursday, March 29, 2012

Erdem Özdemir - 030070307 - 5th Week Definitions - Part 2

Borazon Tips

Manufacturing
New - Better Definition

Polycrysialline cubic boron nilridc (PCBN) tools are used for lurning and milling operations on abrasive, and difficult-to-cut (DTC) materials. PCBN tools can remove material a( much higher rates than conventional cutting tools, with far longer tool life. Wherever PCBN cutting tools were used to replace a grinding operation, machining time was greatly reduced because of the higher metal-removal rate.


(Exploring advanced manufacturing technologies, 2003, Stephen F. Krar, Arthur Gill, P 10)






Previous:

Also known as a syntetic diamond and are used for machining non ferrous alloys and non metals such as fibre,glass, and plasticsThey are unsuitable for machining ferrous materials.(Machine Tools Handbook P.H. Joshi)










Blue Annealing

Manufacturing

New- Better Definition





Softening of a steel by heating a hot-rolled sheet in an atmospheric environment, followed by cooling in air. A blue oxide is formed on the surface, but does not affect properties.


(Academic Press dictionary of science and technology,1992, Christopher G. Morris, P282)






Previous:


Heating hot rolled feroous sheet in an open furnace to a temperature within the transformation range and then cooling in air, in order to soften the metal. The formation of a bluish oxide on the surface is incidential.

(Heat Treater's Guide: Practices and Procedures for Irons and Steels, Chandler H., Page #868)






No comments:

Post a Comment