Wear mechanisms of uncoated and coated carbide tools when machining Ti6Al4V using LN2 and cooled N2

Wear mechanisms of uncoated and coated carbide tools when machining Ti6Al4V using LN2 and cooled N2 One of the main challenges of the manufacturing industry is to optimise the cutting tool life in order to increase both the process productivity and the product surface quality in machining operations. Several innovative strategies were developed and tested as function of both the workpiece material and the peculiar machining operation, being the most interesting in case of difficult-to-cut alloys, the use of low-temperature cutting fluids that would be able to inhibit the thermally activated wear mechanisms responsible of the cutting edge geometrical alterations. In this context, the aim of the paper is to investigate the effect of cryogenic cooling technologies based on the use of liquid nitrogen (LN2) and gaseous nitrogen (N2) cooled at − 100 °C on the tool wear when using uncoated and coated cemented carbide inserts in semi-finishing turning of the Ti6Al4V titanium alloy. Four commercially available insert grades commonly used in machining difficult-to-cut alloys were tested using the cutting parameters recommended by the tool manufacturer. The investigation combined scanning electron microscopy and optical profiler analyses to efficiently define and quantify the main tool wear mechanisms. The study proved that the innovative technology based on cooled N2, regardless of the adopted insert grade, determined the best results in terms of tool life improvement since it simultaneously inhibited the cratering phenomenon onto the tool rake face and produced the lowest flank wear with respect to both the dry cutting, wet strategy, and LN2 cooling cases. It was also proved that the best results were obtained for the uncoated insert when using cooled N2. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The International Journal of Advanced Manufacturing Technology Springer Journals

Wear mechanisms of uncoated and coated carbide tools when machining Ti6Al4V using LN2 and cooled N2

Loading next page...
 
/lp/springer_journal/wear-mechanisms-of-uncoated-and-coated-carbide-tools-when-machining-NywAGnsDdz
Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag London Ltd.
Subject
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
ISSN
0268-3768
eISSN
1433-3015
D.O.I.
10.1007/s00170-017-1289-7
Publisher site
See Article on Publisher Site

Abstract

One of the main challenges of the manufacturing industry is to optimise the cutting tool life in order to increase both the process productivity and the product surface quality in machining operations. Several innovative strategies were developed and tested as function of both the workpiece material and the peculiar machining operation, being the most interesting in case of difficult-to-cut alloys, the use of low-temperature cutting fluids that would be able to inhibit the thermally activated wear mechanisms responsible of the cutting edge geometrical alterations. In this context, the aim of the paper is to investigate the effect of cryogenic cooling technologies based on the use of liquid nitrogen (LN2) and gaseous nitrogen (N2) cooled at − 100 °C on the tool wear when using uncoated and coated cemented carbide inserts in semi-finishing turning of the Ti6Al4V titanium alloy. Four commercially available insert grades commonly used in machining difficult-to-cut alloys were tested using the cutting parameters recommended by the tool manufacturer. The investigation combined scanning electron microscopy and optical profiler analyses to efficiently define and quantify the main tool wear mechanisms. The study proved that the innovative technology based on cooled N2, regardless of the adopted insert grade, determined the best results in terms of tool life improvement since it simultaneously inhibited the cratering phenomenon onto the tool rake face and produced the lowest flank wear with respect to both the dry cutting, wet strategy, and LN2 cooling cases. It was also proved that the best results were obtained for the uncoated insert when using cooled N2.

Journal

The International Journal of Advanced Manufacturing TechnologySpringer Journals

Published: Nov 9, 2017

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off