Abstract
This research presents a new die on principle of the collector method. The collector die of spiral type for uniaxial dry compacting homogeneously dense powdered bodies of complex shape without macroscopic defects has been developed. To reduce the die-wall friction effects collector method is based on the selfalignment of uniform density regions within a green compact. The purpose of this work is comparison of statistical dispersion of local deformation in the volume of ceramic powders compacted using collector die of spiral type and by conventional collector die at certain conditions. A collector die of spiral type was designed for shaping cylindrical compacts (diameter 14 mm, height 40 mm) with 2-12 alternating, oppositely-moving parts of the passive shaping surface of sliders, twisted at an angle of 80 degrees. The results of comparative simulation by FEM showed that dispersion of powder layer deformation for collector die of spiral type can be reduced up to 4-20% if friction coefficient ,u=0.1 and can be reduced up to 5-15% if friction coefficient ,u=0.05. It was shown, that density distribution into powder green compact can be minimized by increasing the number of moving parts of passive shaping surface. Thus it is possible to decrease the density gradients. The collector die of spiral type can be apply to shape uniform-dense cylindrical articles from dry ceramic poly- and nano-sized powders.
| Original language | English |
|---|---|
| Title of host publication | 8th International Forum on Strategic Technology 2013, IFOST 2013 - Proceedings |
| Pages | 25-28 |
| Number of pages | 4 |
| Volume | 1 |
| DOIs | |
| Publication status | Published - 2013 |
| Event | 8th International Forum on Strategic Technology, IFOST 2013 - Ulaanbaatar, Mongolia Duration: 28 Jun 2013 → 1 Jul 2013 |
Other
| Other | 8th International Forum on Strategic Technology, IFOST 2013 |
|---|---|
| Country | Mongolia |
| City | Ulaanbaatar |
| Period | 28.6.13 → 1.7.13 |
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Keywords
- - collector pressing
- ceramics
- powder compaction
- uniform density distribution
ASJC Scopus subject areas
- Computer Networks and Communications
- Software
Cite this
Optimal design of the spiral type of collector die for dry powder compaction. / Edgar, Dvilis; Oleg, Khasanov; Prakorb, Chartpuk; Vitaly, Sokolov.
8th International Forum on Strategic Technology 2013, IFOST 2013 - Proceedings. Vol. 1 2013. p. 25-28 6616979.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Optimal design of the spiral type of collector die for dry powder compaction
AU - Edgar, Dvilis
AU - Oleg, Khasanov
AU - Prakorb, Chartpuk
AU - Vitaly, Sokolov
PY - 2013
Y1 - 2013
N2 - This research presents a new die on principle of the collector method. The collector die of spiral type for uniaxial dry compacting homogeneously dense powdered bodies of complex shape without macroscopic defects has been developed. To reduce the die-wall friction effects collector method is based on the selfalignment of uniform density regions within a green compact. The purpose of this work is comparison of statistical dispersion of local deformation in the volume of ceramic powders compacted using collector die of spiral type and by conventional collector die at certain conditions. A collector die of spiral type was designed for shaping cylindrical compacts (diameter 14 mm, height 40 mm) with 2-12 alternating, oppositely-moving parts of the passive shaping surface of sliders, twisted at an angle of 80 degrees. The results of comparative simulation by FEM showed that dispersion of powder layer deformation for collector die of spiral type can be reduced up to 4-20% if friction coefficient ,u=0.1 and can be reduced up to 5-15% if friction coefficient ,u=0.05. It was shown, that density distribution into powder green compact can be minimized by increasing the number of moving parts of passive shaping surface. Thus it is possible to decrease the density gradients. The collector die of spiral type can be apply to shape uniform-dense cylindrical articles from dry ceramic poly- and nano-sized powders.
AB - This research presents a new die on principle of the collector method. The collector die of spiral type for uniaxial dry compacting homogeneously dense powdered bodies of complex shape without macroscopic defects has been developed. To reduce the die-wall friction effects collector method is based on the selfalignment of uniform density regions within a green compact. The purpose of this work is comparison of statistical dispersion of local deformation in the volume of ceramic powders compacted using collector die of spiral type and by conventional collector die at certain conditions. A collector die of spiral type was designed for shaping cylindrical compacts (diameter 14 mm, height 40 mm) with 2-12 alternating, oppositely-moving parts of the passive shaping surface of sliders, twisted at an angle of 80 degrees. The results of comparative simulation by FEM showed that dispersion of powder layer deformation for collector die of spiral type can be reduced up to 4-20% if friction coefficient ,u=0.1 and can be reduced up to 5-15% if friction coefficient ,u=0.05. It was shown, that density distribution into powder green compact can be minimized by increasing the number of moving parts of passive shaping surface. Thus it is possible to decrease the density gradients. The collector die of spiral type can be apply to shape uniform-dense cylindrical articles from dry ceramic poly- and nano-sized powders.
KW - - collector pressing
KW - ceramics
KW - powder compaction
KW - uniform density distribution
UR - http://www.scopus.com/inward/record.url?scp=84887902844&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84887902844&partnerID=8YFLogxK
U2 - 10.1109/IFOST.2013.6616979
DO - 10.1109/IFOST.2013.6616979
M3 - Conference contribution
AN - SCOPUS:84887902844
SN - 9781479909315
VL - 1
SP - 25
EP - 28
BT - 8th International Forum on Strategic Technology 2013, IFOST 2013 - Proceedings
ER -