Processing Optimization for Metal Injection Molding of Orthodontic Braces Considering Powder Concentration Distribution of Feedstock

Metal injection molding (MIM) utilizes a compound consisting of metal powder particles and a binding agent as the feedstock material. The present study combines MIM mold flow simulations with the Taguchi method to clarify the individual and combined effects of the main MIM process parameters on the...

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Main Authors: Chao-Ming Lin, Jhih-Jyun Wu, Chung-Ming Tan
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Polymers
Subjects:
Online Access:https://www.mdpi.com/2073-4360/12/11/2635
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author Chao-Ming Lin
Jhih-Jyun Wu
Chung-Ming Tan
author_facet Chao-Ming Lin
Jhih-Jyun Wu
Chung-Ming Tan
author_sort Chao-Ming Lin
collection DOAJ
description Metal injection molding (MIM) utilizes a compound consisting of metal powder particles and a binding agent as the feedstock material. The present study combines MIM mold flow simulations with the Taguchi method to clarify the individual and combined effects of the main MIM process parameters on the metal powder concentration distribution in the final sintered product. The results show that the molding process should be performed using a short filling time, a high melt temperature, a low packing pressure, a low mold temperature, and a small gate size. Given these process settings, the powder concentration uniformity and phase separation effect are significantly improved; giving rise to a better aesthetic appearance of the final sintered product and an enhanced mechanical strength.
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spelling doaj.art-925123cd8e9c40d48b2480cc23222be72023-11-20T20:23:10ZengMDPI AGPolymers2073-43602020-11-011211263510.3390/polym12112635Processing Optimization for Metal Injection Molding of Orthodontic Braces Considering Powder Concentration Distribution of FeedstockChao-Ming Lin0Jhih-Jyun Wu1Chung-Ming Tan2Department of Mechanical and Energy Engineering, National Chiayi University, Chiayi 60004, TaiwanDepartment of Mechanical and Energy Engineering, National Chiayi University, Chiayi 60004, TaiwanDepartment of Mechanical Engineering, WuFeng University, Chiayi 62153, TaiwanMetal injection molding (MIM) utilizes a compound consisting of metal powder particles and a binding agent as the feedstock material. The present study combines MIM mold flow simulations with the Taguchi method to clarify the individual and combined effects of the main MIM process parameters on the metal powder concentration distribution in the final sintered product. The results show that the molding process should be performed using a short filling time, a high melt temperature, a low packing pressure, a low mold temperature, and a small gate size. Given these process settings, the powder concentration uniformity and phase separation effect are significantly improved; giving rise to a better aesthetic appearance of the final sintered product and an enhanced mechanical strength.https://www.mdpi.com/2073-4360/12/11/2635metal injection moldingTaguchi methodorthodontic bracepowder concentration distributionmold flow analysis
spellingShingle Chao-Ming Lin
Jhih-Jyun Wu
Chung-Ming Tan
Processing Optimization for Metal Injection Molding of Orthodontic Braces Considering Powder Concentration Distribution of Feedstock
Polymers
metal injection molding
Taguchi method
orthodontic brace
powder concentration distribution
mold flow analysis
title Processing Optimization for Metal Injection Molding of Orthodontic Braces Considering Powder Concentration Distribution of Feedstock
title_full Processing Optimization for Metal Injection Molding of Orthodontic Braces Considering Powder Concentration Distribution of Feedstock
title_fullStr Processing Optimization for Metal Injection Molding of Orthodontic Braces Considering Powder Concentration Distribution of Feedstock
title_full_unstemmed Processing Optimization for Metal Injection Molding of Orthodontic Braces Considering Powder Concentration Distribution of Feedstock
title_short Processing Optimization for Metal Injection Molding of Orthodontic Braces Considering Powder Concentration Distribution of Feedstock
title_sort processing optimization for metal injection molding of orthodontic braces considering powder concentration distribution of feedstock
topic metal injection molding
Taguchi method
orthodontic brace
powder concentration distribution
mold flow analysis
url https://www.mdpi.com/2073-4360/12/11/2635
work_keys_str_mv AT chaominglin processingoptimizationformetalinjectionmoldingoforthodonticbracesconsideringpowderconcentrationdistributionoffeedstock
AT jhihjyunwu processingoptimizationformetalinjectionmoldingoforthodonticbracesconsideringpowderconcentrationdistributionoffeedstock
AT chungmingtan processingoptimizationformetalinjectionmoldingoforthodonticbracesconsideringpowderconcentrationdistributionoffeedstock