New observations on tool life, cutting forces and chip morphology in cryogenic machining Ti-6Al-4V

Bermingham, M. J., Kirsch, J., Sun, S., Palanisamy, S. and Dargusch, M. S. (2011) New observations on tool life, cutting forces and chip morphology in cryogenic machining Ti-6Al-4V. International Journal of Machine Tools and Manufacture, 51 6: 500-511. doi:10.1016/j.ijmachtools.2011.02.009


Author Bermingham, M. J.
Kirsch, J.
Sun, S.
Palanisamy, S.
Dargusch, M. S.
Title New observations on tool life, cutting forces and chip morphology in cryogenic machining Ti-6Al-4V
Journal name International Journal of Machine Tools and Manufacture   Check publisher's open access policy
ISSN 0890-6955
1879-2170
Publication date 2011-06-24
Sub-type Article (original research)
DOI 10.1016/j.ijmachtools.2011.02.009
Volume 51
Issue 6
Start page 500
End page 511
Total pages 12
Place of publication New York, NY, United States
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
The use of cryogenic coolant in metal cutting has received renewed recent attention because liquid nitrogen is a safe, clean, non-toxic coolant that requires no expensive disposal and can substantially improve tool life. This work investigates the effectiveness of cryogenic coolant during turning of Ti-6Al-4V at a constant speed and material removal rate (125 m/min, 48.5 cm3/min) with different combinations of feed rate and depth of cut. It is found that the greatest improvement in tool life using cryogenic coolant occurs for conditions of high feed rate and low depth of cut combinations. However, this combination of machining parameters produces much shorter tool life compared to low feed rate and high depth of cut combinations. It is found that preventing heat generation during cutting is far more advantageous towards extending tool life rather than attempting to remove the heat with cryogenic coolant. Although cryogenic coolant is effective in extracting heat from the cutting zone, it is proposed that cryogenic coolant may limit the frictional heat generated during cutting and limit heat transfer to the tool by reducing the tool–chip contact length. The effect of cryogenic coolant on cutting forces and chip morphology is also examined.
Keyword Cryogenic
Tool life
Cutting force
Chip morphology
Titanium
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2012 Collection
 
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Created: Mon, 10 Oct 2011, 07:43:09 EST by Mr Michael Bermingham on behalf of School of Mechanical and Mining Engineering