Study of rheological behaviour of stainless steel feedstock taking into account the thermal effects
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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IBEREO’15 IBERIAN RHEOLOGY CONFERENCE. ed. / Maria Graca Rasteiro. Coimbra, Portugal: Universidad Nacional de Colombia, 2015. p. 50-53.
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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TY - GEN
T1 - Study of rheological behaviour of stainless steel feedstock taking into account the thermal effects
AU - Kukla, Christian
AU - Duretek, Ivica
AU - Schuschnigg, Stephan
AU - Gonzalez-Gutierrez, Joamin
AU - Gooneie, Ali
AU - Holzer, Clemens
PY - 2015/11/30
Y1 - 2015/11/30
N2 - Powder injection moulding (PIM) process is well established for production of small precision components with both metal and ceramic powders. In comparison to unfilled polymers, the PIMfeedstocks are highly filled multiphase systems, whose flow behaviour is very sensitive to composition of binder and powder loading. Furthermore, the rheology of highly filled multiphase systems is characterized by strain and temperature dependence and influenced by flow instabilities and yield stress. In this study, the rheological behaviour of 316L feedstocks with a polypropylene/wax binder system and different powder loadings was investigated. The experimental work was performed with a rotational and a high pressure capillary rheometer. The aim of this work was to evaluate mixing rules predicting the viscosity of the feedstock out of its composition taking into account the melt temperature rise due to dissipative heating. Hence, measured data were corrected with respect to temperature. Thus the influence of the temperature onto the viscosity and the related model was evaluated.
AB - Powder injection moulding (PIM) process is well established for production of small precision components with both metal and ceramic powders. In comparison to unfilled polymers, the PIMfeedstocks are highly filled multiphase systems, whose flow behaviour is very sensitive to composition of binder and powder loading. Furthermore, the rheology of highly filled multiphase systems is characterized by strain and temperature dependence and influenced by flow instabilities and yield stress. In this study, the rheological behaviour of 316L feedstocks with a polypropylene/wax binder system and different powder loadings was investigated. The experimental work was performed with a rotational and a high pressure capillary rheometer. The aim of this work was to evaluate mixing rules predicting the viscosity of the feedstock out of its composition taking into account the melt temperature rise due to dissipative heating. Hence, measured data were corrected with respect to temperature. Thus the influence of the temperature onto the viscosity and the related model was evaluated.
KW - Rheology
KW - powder injection moulding
KW - highly filled polymer
KW - heat dissipation
KW - modelling
UR - http://e-rheo-iba.org/Papers/IBEREO2015.pdf
M3 - Conference contribution
SP - 50
EP - 53
BT - IBEREO’15 IBERIAN RHEOLOGY CONFERENCE
A2 - Rasteiro, Maria Graca
PB - Universidad Nacional de Colombia
CY - Coimbra, Portugal
T2 - IBEREO15 - Challenges in rheology and product development
Y2 - 7 September 2015 through 9 September 2015
ER -
