Optimization of micro metal injection molding for highest green strength by using taguchi method

M. H I Ibrahim, Norhamidi Muhamad, Abu Bakar Sulong, K. R. Jamaludin, S. Ahmad, N. H M Nor

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Nowadays, micro metal injection molding has become among the promising method in powder metallurgy research to produce small-scale intricate part at an effective process and competitive cost for mass production. The success of injection molding is greatly influenced by feedstock characteristic. This paper investigated the optimization of highest green strength which plays an important characteristic in determining the successful of micro MIM. In this paper, stainless steel SS 316L with D50 = 5.96μm was used with composite binder, which consists of PEG (Polyethelena Glycol), PMMA (Polymethyl Methacrilate) and SA (Stearic Acid). Feedstock with 61.5% with several injection parameters were optimized which highly significant through screening experiment such as injection pressure(A), injection temperature(B), mold temperature(C), injection time(D) and holding time(E). Besides that, interaction effects between injection pressure, injection temperature and mold temperature were also considered to optimize in the Taguchi's orthogonal array. Analysis of variance (ANOVA) in terms of signal-to-noise ratio (S/N-larger is better) for green strength was also presented in this paper. Result shows that interaction between injection temperature and mold temperature (BxC) give highest significant factor followed by interaction between injection pressure and injection temperature (AxB). Single factor that also contributes to significant optimization are mold temperature(C), injection time(D) and injection pressure(A). This study shows that Taguchi method would be among the best method to solve the problem with minimum number of trials.

Original languageEnglish
Pages (from-to)282-289
Number of pages8
JournalInternational Journal of Mechanical and Materials Engineering
Volume5
Issue number2
Publication statusPublished - 2010

Fingerprint

Metal molding
Taguchi methods
Injection molding
Temperature
Feedstocks
Glycols
Stearic acid
Stainless Steel
Powder metallurgy
Analysis of variance (ANOVA)
Binders
Signal to noise ratio
Screening
Stainless steel

Keywords

  • Analysis of variance
  • Green strength
  • Micro metal injection molding
  • Taguchi's orthogonal array

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Optimization of micro metal injection molding for highest green strength by using taguchi method. / Ibrahim, M. H I; Muhamad, Norhamidi; Sulong, Abu Bakar; Jamaludin, K. R.; Ahmad, S.; Nor, N. H M.

In: International Journal of Mechanical and Materials Engineering, Vol. 5, No. 2, 2010, p. 282-289.

Research output: Contribution to journalArticle

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AU - Ahmad, S.

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