Wall friction coefficient estimation through modelling of powder die pressing experiment

Citation
B. Wikman et al., Wall friction coefficient estimation through modelling of powder die pressing experiment, POWD METALL, 43(2), 2000, pp. 132-138
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Metallurgy
Journal title
POWDER METALLURGY
ISSN journal
0032-5899 → ACNP
Volume
43
Issue
2
Year of publication
2000
Pages
132 - 138
Database
ISI
SICI code
0032-5899(2000)43:2<132:WFCETM>2.0.ZU;2-#
Abstract
Forming of PM components through powder pressing is a process, which is inf luenced by the friction between the powder and the tool walls. For good per formance of the pressing process it is uf great interest to understand and estimate the effects of powder-wall friction. However, quantification of th e friction coefficient between the powder and the tool is a delicate task. Local contact conditions, such as contact stress, must be measured or other wise estimated in order to evaluate the coefficient of friction. Here, the friction coefficient is estimated by combining an experiment with modelling of the experiment. Two methods for assessment of friction are presented, a n optimisation approach using finite element analyses and an analytical app roach. Experimental data are taken from the single action cold pressing of a cylinder shaped component.