Determination of the Frictional Behavior at Compaction of Powder Materials Consisting of Spray-Dried Granules

Journal Article · Thu Mar 15 00:00:00 EDT 2018 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-018-3205-1· OSTI ID:22858032

Staf, Hjalmar; Olsson, Erik ^[1]; Lindskog, Per ^[2]; Larsson, Per-Lennart ^[1]

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1. Royal Institute of Technology, Department of Solid Mechanics (Sweden)
2. Sandvik Coromant AB, R&D (Sweden)

The frictional behavior during powder compaction and ejection is studied using an instrumented die with eight radial sensors. The average friction over the total powder pillar is used to determine a local friction coefficient at each sensor. By comparing forces at compaction with forces at ejection, it can be shown that the Coulomb’s friction coefficient can be described as a function of normal pressure. Also stick phenomena has been investigated in order to assess its influence on the determination of the local friction coefficient.

• OSTI ID: 22858032
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 3 Vol. 27; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
FINITE ELEMENT METHOD
FRICTION FACTOR
POWDERS
SPRAYS
TUNGSTEN CARBIDES