SLIP CHARACTERIZATION OF POWDER/BINDER MIXTURES AND ITS SIGNIFICANCE IN THE FILLING PROCESS ANALYSIS OF POWDER INJECTION-MOLDING
SCIE
SCOPUS
- Title
- SLIP CHARACTERIZATION OF POWDER/BINDER MIXTURES AND ITS SIGNIFICANCE IN THE FILLING PROCESS ANALYSIS OF POWDER INJECTION-MOLDING
- Authors
- KWON, TH; AHN, SY
- Date Issued
- 1995-10
- Publisher
- ELSEVIER SCIENCE SA LAUSANNE
- Abstract
- Our experimental data from a capillary rheometer clearly show that powder/binder mixtures for powder injection molding (PIM) experience so-called slip phenomena at the wall, like many particle-filled materials. It is thus of great importance to characterize quantitatively the slip, together with shear-thinning viscosity data of power/binder mixtures in view of proper numerical simulations of the PIM filling process. The slip at the wall could be quantified in terms of a slip velocity or in terms of a very thin slip layer. The present paper adopted the well-known Mooney's method for determining slip velocity, whereas the slip layer thickness was determined by a newly-proposed method. The dip velocity, or the slip layer thickness, thus determined were then introduced into the finite element analysis of the PIM filling process. This was found to have a significant effect on the overall flow behavior during the injection molding filling.
- Keywords
- SLIP CHARACTERIZATION; POWDER/BINDER MIXTURES; SLIP EFFECTS; POWDER INJECTION MOLDING; FILLING PROCESS ANALYSIS; BEHAVIOR; PARTS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21703
- DOI
- 10.1016/0032-5910(95)03001-P
- ISSN
- 0032-5910
- Article Type
- Article
- Citation
- POWDER TECHNOLOGY, vol. 85, no. 1, page. 45 - 55, 1995-10
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