Dynamic response optimization for cemented carbide injection molding

Sri Yulis M Amin, Norhamidi Muhamad, Khairur Rijal Jamaludin

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)41-44
Number of pages4
JournalJurnal Teknologi (Sciences and Engineering)
Volume68
Issue number4
DOIs
Publication statusPublished - 2014

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Injection molding
Dynamic response
Carbides
Powders
Metal molding
Customer satisfaction
Processing
Feedstocks
Binders
Polyethylenes
Atmospheric humidity
Temperature
Defects
Costs

Keywords

  • Cemented carbide
  • Metal injection molding
  • Optimization

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Dynamic response optimization for cemented carbide injection molding. / Amin, Sri Yulis M; Muhamad, Norhamidi; Jamaludin, Khairur Rijal.

In: Jurnal Teknologi (Sciences and Engineering), Vol. 68, No. 4, 2014, p. 41-44.

Research output: Contribution to journalArticle

Amin, Sri Yulis M ; Muhamad, Norhamidi ; Jamaludin, Khairur Rijal. / Dynamic response optimization for cemented carbide injection molding. In: Jurnal Teknologi (Sciences and Engineering). 2014 ; Vol. 68, No. 4. pp. 41-44.
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