The characterisation of die friction as a means to reduce component machining and attain near-net shape form

Özkan, Necati
The cylindrical alumina compacts, produced by the uniaxial die pressing technique, posses a certain density distribution due to the creation of uneven stress distributions within the samples, which are controlled, in a major part, by the wall boundary (friction) conditions between the compact and the die wall. Die wall lubrication reduces the wall friction and hence the density variations within the compact. The extent of the shape deviations in the sintered compacts is directly proportional to the extent of the density variations generated within the corresponding green compacts. By reducing the wall friction coefficient, between the powder and the die wall, the shape distortions in the sintered final product are minimised.
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Citation Formats
N. Özkan and I. AYDIN, “The characterisation of die friction as a means to reduce component machining and attain near-net shape form,” Tribology Series, pp. 365–369, 1998, Accessed: 00, 2020. [Online]. Available: