Threshold Concentration of Surfactant Agent in Feedstocks Used for Low-Pressure Powder Injection Molding

2020 ◽  
Vol 9 (4) ◽  
pp. 20190149 ◽  
Author(s):  
Ghalya Ali ◽  
Vincent Demers ◽  
Raphaël Côté ◽  
Nicole R. Demarquette
Keyword(s):  
Injection Molding ◽  
Low Pressure ◽  
Threshold Concentration ◽  
Powder Injection Molding ◽  
Powder Injection

scholarly journals Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection Molding

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Fouad Fareh ◽  
Vincent Demers ◽  
Nicole R. Demarquette ◽  
Sylvain Turenne ◽  
Orlando Scalzo
Keyword(s):  
Shear Rate ◽  
Injection Molding ◽  
Inconel 718 ◽  
Rate Sensitivity ◽  
Low Pressure ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Sensitivity Index ◽  
High Shear Rates ◽  
The Impact

The impact of binders and temperature on the rheological properties of feedstocks used in low-pressure powder injection molding was investigated. Experiments were conducted on different feedstock formulations obtained by mixing Inconel 718 powder with wax-based binder systems. The shear rate sensitivity index and the activation energy were used to study the degree of dependence of shear rate and temperature on the viscosity of the feedstocks. The injection performance of feedstocks was then evaluated using an analytical moldability model. The results indicated that the viscosity profiles of feedstocks depend significantly on the binder constituents, and the secondary binder constituents play an important role in the rheological behavior (pseudoplastic or near-Newtonian) exhibited by the feedstock formulations. Viscosity values as low as 0.06 to 2.9 Pa·s were measured at high shear rates and high temperatures. The results indicate that a feedstock containing a surfactant agent exhibits the best moldability characteristics.

Numerical simulation and experimental investigation of mold filling and segregation in low-pressure powder injection molding of metallic feedstock

2020 ◽  
Vol 31 (3) ◽  
pp. 1349-1358 ◽  
Author(s):  
Mohamed Aziz Ben Trad ◽  
Vincent Demers ◽  
Raphaël Côté ◽  
Mehran Sardarian ◽  
Louis Dufresne
Keyword(s):  
Numerical Simulation ◽  
Experimental Investigation ◽  
Injection Molding ◽  
Low Pressure ◽  
Mold Filling ◽  
Powder Injection Molding ◽  
Powder Injection

Low-pressure powder injection molding using an innovative injection press concept

2017 ◽  
Vol 91 (5-8) ◽  
pp. 2595-2605 ◽  
Author(s):  
Simon G. Lamarre ◽  
Vincent Demers ◽  
Jean-François Chatelain
Keyword(s):  
Injection Molding ◽  
Low Pressure ◽  
Powder Injection Molding ◽  
Powder Injection

Experimental study on moldability and segregation of Inconel 718 feedstocks used in low-pressure powder injection molding

2018 ◽  
Vol 29 (1) ◽  
pp. 180-190 ◽  
Author(s):  
V. Demers ◽  
F. Fareh ◽  
S. Turenne ◽  
N.R. Demarquette ◽  
O. Scalzo
Keyword(s):  
Experimental Study ◽  
Injection Molding ◽  
Inconel 718 ◽  
Low Pressure ◽  
Powder Injection Molding ◽  
Powder Injection
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