Dynamic Response Optimization for Cemented Carbide Injection Molding

Authors

  • Sri Yulis M. Amin Department of Engineering Mechanics, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Batu Pahat, Johor, Malaysia
  • Norhamidi Muhamad Precision Research Group, Dept. of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia
  • Khairur Rijal Jamaludin Department of Mechanical Engineering, Razak School of Engineering and Advanced Technology, Universiti Teknologi Malaysia, 54100 Kuala Lumpur, Malaysia

DOI:

https://doi.org/10.11113/jt.v68.2993

Keywords:

Cemented carbide, metal injection molding, optimization

Abstract

The need to optimize the injection molding parameters for producing cemented carbide parts via Metal Injection Molding process is crucial to ensure the system’s robustness towards manufacturer and customer’s satisfactions. Defect free product with best density can be produced while reducing time and cost in manufacturing. In this work, the feedstock consisting of WC-Co powders, mixed with palm stearin and polyethylene binder system was injection molded to produce green parts. Several processing variables, namely powder loading, injection temperature, holding pressure and flowrate, were optimized towards the density of the green body, as the response factor. By considering humidity level at morning and evening conditions as the noise factor, the results show the optimum combination of injection molding parameters that produces best green density. The green part exhibited best density by following this optimum processing parameters, A2B3C1D1, that are flowrate at 20 ccm/s, powder loading at 63% vol., injection temperature at 140°C, and holding pressure at 1700 bar.

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Published

2014-05-15

How to Cite

M. Amin, S. Y., Muhamad, N., & Jamaludin, K. R. (2014). Dynamic Response Optimization for Cemented Carbide Injection Molding. Jurnal Teknologi, 68(4). https://doi.org/10.11113/jt.v68.2993