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Tool wear in sheet metal stamping
journal contribution
posted on 2012-01-01, 00:00 authored by W Yan, Michael PereiraMichael Pereira, Bernard RolfeBernard RolfeThis paper discusses our recent research on wear at the die radius in sheet metal stamping. According to wear theory, contact pressure and sliding distance are the two dominant factors in determining sliding wear. We applied the finite element analysis to accurately quantify the contact pressure and sliding distance at the die radius in sheet metal stamping. The results were then applied to analyze sliding wear at the die radius. We found that a typical two-peak steady-state contact pressure response exists during a channel forming process. The steady-state contact pressure response was preceded by an initial transient response, which produced extremely large and localized contact pressures. We proposed a method to numerically quantify the sliding distance, which was applied to examine the contact sliding distance at the die radius. Correlating the contact pressure and sliding distance, a new insight into the wear/galling that occurs at the die radius in sheet metal stamping was gained. The results show that the region close to zero degrees on the die radius is likely to experience the most wear, with the identified transient stage contributing to a large proportion of the total wear.
History
Journal
Advanced materials researchVolume
421Pagination
750 - 753Publisher
Trans Tech PublicationsLocation
Stafa-Zurich, SwitzerlandISSN
1022-6680Language
engNotes
Presented at the 2nd International Conference on Advances in Materials and Manufacturing Processes (ICAMMP 2011)Publication classification
C1 Refereed article in a scholarly journalCopyright notice
2012, Trans Tech Publications, SwitzerlandUsage metrics
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