The aim of this work was to study the cutting performances and wear characteristics of Co-WC inserts coated with TiAlSiN and CrTiAlSiN by a filtered cathodic arc process in dry face milling of cast iron. Face milling experiments were conducted on turbine cast iron workpieces with TiAlSiN-coated, CrTiAlSiN-coated and uncoated inserts at various cutting speeds and numbers of inserts. The results showed that Ti-based coatings offered substantially better cutting performances for Co-WC inserts and could effectively protect the inserts over longer cutting lengths than uncoated ones. Specifically, the CrTiAlSiN coating offered the best cutting performances with the lowest workpiece surface roughness, the lowest flank wear rate and the longest maximum cutting length of 10 m, which was about 2.5 times as high as that of uncoated one owing to superior hardness relative to yielding and chemical properties. In addition, the workpiece quality in term of surface roughness was found to improve with increasing cutting speed in the range of 140–300 m/min and decreasing number of inserts ranging from 1 to 3. Microstructural analyses suggested that the CrTiAlSiN-coated inserts exhibited wear due to thermal cracking and partial delamination under high temperature ploughing abrasion while the TiAlSiN-coated ones displayed mainly ploughing abrasive flank wear behaviour, which resulted in a substantially lower flank wear rate than uncoated WC inserts that suffered from the combination of direct cutting and ploughing abrasive wear.
The International Journal of Advanced Manufacturing Technology – Springer Journals
Published: Jun 2, 2018
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
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
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.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera