Rheological Investigation of ZK60 Magnesium Alloy Feedstock for Metal Injection Moulding Using Palm Stearin Based Binder System

2010 ◽  
Vol 44-47 ◽  
pp. 4126-4130 ◽  
Author(s):  
Mohd Ruzi Harun ◽  
N. Muhamad ◽  
Abu Bakar Sulong ◽  
Nor Hafiez Mohamad Nor ◽  
Mohd Halim Irwan Ibrahim
Keyword(s):  
Injection Moulding ◽  
Flow Behavior ◽  
Palm Stearin ◽  
Mg Alloy ◽  
Flow Behavior Index ◽  
Volume Percentage ◽  
Flow Activation Energy ◽  
Moulding Process ◽  
Metal Injection Moulding ◽  
Injection Moulding Process

This paper investigates the characteristic important to metal injection moulding (MIM) process via rheological behavior of MIM feedstock. A gas atomized spherical ZK60 magnesium (Mg) alloy powder and the binder of 60wt.% palm stearin (PS) + 40wt.% low density polyethylene (LDPE) were used in this investigation. Prior to mixing process, critical powder volume percentage (CPVP) was determined and subsequently four different feedstocks with powder loading of 62, 64, 66 and 68vol.% were prepared. The properties of the feedstocks were then analyzed rheologically. Here, the flow behavior index n, the flow activation energy E and the mold ability index αSTV of the Mg alloy MIM feedstocks were determined. Results show that feedstock with 64% powder loading has the best rheological properties and therefore it is considered to be the best for the injection moulding process.

Feedstock Characterization of Elemental Nickel and Titanium Powders Mixture for Metal Injection Moulding Process

2014 ◽  
Vol 575 ◽  
pp. 78-82 ◽  
Author(s):  
Rosliza Razali ◽  
Zulaila Abdullah ◽  
Istikamah Subuki ◽  
Muhammad Hussain Ismail ◽  
Norhamidi Muhamad
Keyword(s):  
Injection Moulding ◽  
Palm Stearin ◽  
Scanning Calorimetry ◽  
Moulding Process ◽  
Metal Injection Moulding ◽  
Injection Moulding Process ◽  
Initial Characterization ◽  
Titanium Powders ◽  
Internal Mixer

The success of metal injection moulding (MIM) process is significantly influenced by the homogeneity level of the powder-binder mixture (feedstock). This paper highlights some initial characterization of the feedstock containing elemental Ni and Ti powders mixture, (50.8 at.% Ni/ 49.2 at.% Ti) mixed with Palm stearin-based binder system. The feedstock was prepared using an internal mixer, HAAKE Rheomix at a temperature of 160°C for 2 hours. The feedstock was then characterized by Differential Scanning Calorimetry (DSC), Thermogravimetric (TGA), Scanning Electron Microscopy (SEM) and Capillary Rheometer. All the results obtained were analyzed and discussed for further injection moulding process.

Physical properties and microstructure study of 316L SS fabricated by metal injection moulding process

2017 ◽  
Author(s):  
Nur Aidah Nabihah Dandang ◽  
Wan Sharuzi Wan Harun ◽  
Nur Zalikha Khalil ◽  
Muhammad Hussain Ismail ◽  
Rosdi Ibrahim
Keyword(s):  
Physical Properties ◽  
Injection Moulding ◽  
Moulding Process ◽  
Metal Injection Moulding ◽  
Injection Moulding Process

Development and characterisation of a biosourced feedstock of superalloy in metal injection moulding process

2017 ◽  
Vol 60 (2) ◽  
pp. 105-111 ◽  
Author(s):  
Alexandre Royer ◽  
Thierry Barrière ◽  
Jean-Claude Gelin ◽  
Loic Hilliou
Keyword(s):  
Injection Moulding ◽  
Moulding Process ◽  
Metal Injection Moulding ◽  
Injection Moulding Process

Mechanical alloying of FeAl intermetallic powder for metal injection moulding process

2010 ◽  
Vol 53 (3) ◽  
pp. 208-212 ◽  
Author(s):  
H. X. Song ◽  
Y. X. Wu ◽  
S. Yuan ◽  
Q. M. Gong ◽  
S.-J. Park ◽  
...  
Keyword(s):  
Mechanical Alloying ◽  
Injection Moulding ◽  
Moulding Process ◽  
Metal Injection Moulding ◽  
Injection Moulding Process

Rheological Behavior of Yttria Stabilized Zirconia (YSZ) Feedstock for Ceramic Injection Moulding (CIM) Process

2017 ◽  
Vol 882 ◽  
pp. 119-123
Author(s):  
Mahfuzah Zainudin ◽  
Muhammad Hussain Ismail
Keyword(s):  
Rheological Behavior ◽  
Injection Moulding ◽  
Flow Behavior ◽  
Palm Stearin ◽  
Stabilized Zirconia ◽  
Flow Behavior Index ◽  
Green Strength ◽  
Ceramic Injection Moulding ◽  
Behavior Index

The characterization of CIM feedstock consisting 58, 59, 60vol% of YSZ powder with binder system comprising a palm stearin (PS) and low density polyethylene (LDPE) were studied. The effects of powder loading and temperature (°C) on the rheological behavior of the YSZ were investigated by using Rosand RH2000 Capillary Rheometer. The results showed all the feedstock achieved desirable injection moulding characteristics such as pseudoplastic behavior, flow behavior index (n) less than 1 and low activation energy (E). The rectangular parts were successfully injected moulded at optimum temperature of 170°C with the highest green strength was 12.7 N, obtained from 60 vol% powder loading which correspond to greater density and low porosity of the samples.

scholarly journals Green Density Optimisation with Sustainable Sewage Fat as Binder Components in SS316L Feedstock of Metal Injection Moulding Process (MIM) by Taguchi Method

2015 ◽  
Vol 773-774 ◽  
pp. 173-177 ◽  
Author(s):  
Azriszul Mohd Amin ◽  
Mohd Halim Irwan Ibrahim ◽  
Rosli Asmawi ◽  
Najwa Mustapha ◽  
Mohd Yussni Hashim
Keyword(s):  
Injection Moulding ◽  
Injection Pressure ◽  
Powder Metallurgy Method ◽  
Moulding Process ◽  
High Productivity ◽  
Optimum Density ◽  
Metal Injection Moulding ◽  
Injection Moulding Process ◽  
Experimental Base ◽  
Shape Retention

Metal injection moulding has gain much attention due to flexibility and high productivity of the plastics injection moulding with the powder metallurgy method of sintering. In order to gain better shape retention, optimum density of green part is required. This paper deals with the application of Taguchi optimisation technique on getting the optimum density for Metal Injection Moulding (MIM) components base on certain parameters in process injection. For this purposes only 3 process parameters were considered here including its interactions which are injection pressure, injection temperature and mould temperature. Since its more close to the final products these parameters were selected and other parameters will be kept constant. An orthogonal array of L16 experimental base design was conducted. Confirmation test will be done base on Signal-to-Noise (S/N) ratio and it Means.

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