In production engineering cold forging processes are of great importance due to the high material utilization and the associated energy and resource efficiency. In order to successfully perform cold forging processes, liquid and solid lubricants are used, which are often questionable due to ecological, economic and legislative reasons. For these reasons, dry forming exhibits an increased research potential. The absence of lubricants in dry forming significantly contributes to the waste reduction in manufacturing processes and to the goal of a lubricant-free factory. However, this goes along with the requirement that the dry tribological system has to incur the functions of absent lubricants. In this work, it is proposed to reduce friction by surface structures on workpieces. Positive effects of surface structures were already observed in dry sheet metal forming. However, sheet metal forming significantly differs from cold forging due to lower contact pressures and a lower surface expansion of the workpiece. In order to enable dry forming in cold forging for the first time, friction-optimized surface structures on workpieces are explored. Using a newly developed Pin-On-Cylinder tribometer, experiments present the influence of selected surface structures and surface layer states on the frictional shear stresses in dry contacts.
International Journal of Material Forming – Springer Journals
Published: Jun 14, 2016
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