Optimizing injection parameter of metal injection molding processes using the feedstock of 16 μm stainless steel powder (SS316L), PEG, PMMA and stearic acid

Abu Bakar Sulong, Norhamidi Muhamad, Amir Arifin, Kuu Bi Yong

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Optimization of injection molding parameters isrequired to achieve acceptable strength anddensity of green compact prior to debinding and sintering process in MIM. This study relies on an L9 orthogonal array of Taguchi method in optimizing parameters ofmetal injection molding process and to study effect of solvent debinding stage. Feedstock in this study consists of stainless steel powder (SS316L) with the powder loading of 64Vol% and binder compositions are polyethelene glycol (PEG-73%wt), polymethyl methacrilate (PMMA-25%wt) and stearic acid (SA-2%). Results show that optimum parameters are: mold temperature 550C, injection temperature 1450C, injection pressure 700 bar and packing time 10 s. From the analysis of variance (ANOVA), packing time give effect achieve 69.57% in order to produce good surface quality and mold temperature 43.40 % for the highest contribution factor to the strength of the green compact. The most suitable immersion time for debinding process is 180 minutes at the immersion temperature of 590C.

Original languageEnglish
Pages (from-to)2998-3003
Number of pages6
JournalJournal of Applied Sciences Research
Volume8
Issue number6
Publication statusPublished - Jun 2012

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Metal molding
Stearic acid
Injection molding
Feedstocks
Polyethylene glycols
Stainless steel
Powders
Temperature
Taguchi methods
Analysis of variance (ANOVA)
Glycols
Surface properties
Binders
Sintering
Chemical analysis

Keywords

  • Analysis of variance
  • Green compact
  • Metal injection molding
  • Stainless steel
  • Taguchi's orthogonal array

ASJC Scopus subject areas

  • General

Cite this

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title = "Optimizing injection parameter of metal injection molding processes using the feedstock of 16 μm stainless steel powder (SS316L), PEG, PMMA and stearic acid",
abstract = "Optimization of injection molding parameters isrequired to achieve acceptable strength anddensity of green compact prior to debinding and sintering process in MIM. This study relies on an L9 orthogonal array of Taguchi method in optimizing parameters ofmetal injection molding process and to study effect of solvent debinding stage. Feedstock in this study consists of stainless steel powder (SS316L) with the powder loading of 64Vol{\%} and binder compositions are polyethelene glycol (PEG-73{\%}wt), polymethyl methacrilate (PMMA-25{\%}wt) and stearic acid (SA-2{\%}). Results show that optimum parameters are: mold temperature 550C, injection temperature 1450C, injection pressure 700 bar and packing time 10 s. From the analysis of variance (ANOVA), packing time give effect achieve 69.57{\%} in order to produce good surface quality and mold temperature 43.40 {\%} for the highest contribution factor to the strength of the green compact. The most suitable immersion time for debinding process is 180 minutes at the immersion temperature of 590C.",
keywords = "Analysis of variance, Green compact, Metal injection molding, Stainless steel, Taguchi's orthogonal array",
author = "Sulong, {Abu Bakar} and Norhamidi Muhamad and Amir Arifin and Yong, {Kuu Bi}",
year = "2012",
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T1 - Optimizing injection parameter of metal injection molding processes using the feedstock of 16 μm stainless steel powder (SS316L), PEG, PMMA and stearic acid

AU - Sulong, Abu Bakar

AU - Muhamad, Norhamidi

AU - Arifin, Amir

AU - Yong, Kuu Bi

PY - 2012/6

Y1 - 2012/6

N2 - Optimization of injection molding parameters isrequired to achieve acceptable strength anddensity of green compact prior to debinding and sintering process in MIM. This study relies on an L9 orthogonal array of Taguchi method in optimizing parameters ofmetal injection molding process and to study effect of solvent debinding stage. Feedstock in this study consists of stainless steel powder (SS316L) with the powder loading of 64Vol% and binder compositions are polyethelene glycol (PEG-73%wt), polymethyl methacrilate (PMMA-25%wt) and stearic acid (SA-2%). Results show that optimum parameters are: mold temperature 550C, injection temperature 1450C, injection pressure 700 bar and packing time 10 s. From the analysis of variance (ANOVA), packing time give effect achieve 69.57% in order to produce good surface quality and mold temperature 43.40 % for the highest contribution factor to the strength of the green compact. The most suitable immersion time for debinding process is 180 minutes at the immersion temperature of 590C.

AB - Optimization of injection molding parameters isrequired to achieve acceptable strength anddensity of green compact prior to debinding and sintering process in MIM. This study relies on an L9 orthogonal array of Taguchi method in optimizing parameters ofmetal injection molding process and to study effect of solvent debinding stage. Feedstock in this study consists of stainless steel powder (SS316L) with the powder loading of 64Vol% and binder compositions are polyethelene glycol (PEG-73%wt), polymethyl methacrilate (PMMA-25%wt) and stearic acid (SA-2%). Results show that optimum parameters are: mold temperature 550C, injection temperature 1450C, injection pressure 700 bar and packing time 10 s. From the analysis of variance (ANOVA), packing time give effect achieve 69.57% in order to produce good surface quality and mold temperature 43.40 % for the highest contribution factor to the strength of the green compact. The most suitable immersion time for debinding process is 180 minutes at the immersion temperature of 590C.

KW - Analysis of variance

KW - Green compact

KW - Metal injection molding

KW - Stainless steel

KW - Taguchi's orthogonal array

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