Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding

Takashi Iwai, Tatsuhiko Aizawa, Junji Kihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Metal Injection Molding deals with the complex fluid which consists of thermoplastic polymer medium and dense metallic powder suspensions to improve flowability and formability. To understand its fundamental mechanical behavior, it is important to consider powder structures and mechanics precisely. For the analysis of this process, a new granular model is proposed, which is based on the Distinct Element Method. Each element in this method is constituted by combining a metal powder with a binder (polymer) shell surrounding it. Both elasticity and viscosity for powder particles and binders are only considered in this mixture model as the constitutive relations. Thermo-mechanical coupling method with mapping/remapping procedure is introduced into the present granular model to deal with the cooling process. Several numerical results have demonstrated the effectiveness and validity of our developed granular modeling to deal with the various phenomena appearing in MIM process.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
EditorsDennis A. Siginer, William E. VanArsdale, Cengiz M. Altan, Andreas N. Alexandrou
Place of PublicationNew York, NY, United States
PublisherPubl by ASME
Pages39-48
Number of pages10
Volume175
ISBN (Print)0791810380
Publication statusPublished - 1993
Externally publishedYes
EventProceedings of the 1993 ASME Winter Annual Meeting - New Orleans, LA, USA
Duration: 1993 Nov 281993 Dec 3

Other

OtherProceedings of the 1993 ASME Winter Annual Meeting
CityNew Orleans, LA, USA
Period93/11/2893/12/3

Fingerprint

Metal molding
Injection molding
Binders
Powders
Powder metals
Polymers
Formability
Thermoplastics
Elasticity
Mechanics
Viscosity
Cooling
Fluids

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Iwai, T., Aizawa, T., & Kihara, J. (1993). Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding. In D. A. Siginer, W. E. VanArsdale, C. M. Altan, & A. N. Alexandrou (Eds.), American Society of Mechanical Engineers, Applied Mechanics Division, AMD (Vol. 175, pp. 39-48). New York, NY, United States: Publ by ASME.

Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding. / Iwai, Takashi; Aizawa, Tatsuhiko; Kihara, Junji.

American Society of Mechanical Engineers, Applied Mechanics Division, AMD. ed. / Dennis A. Siginer; William E. VanArsdale; Cengiz M. Altan; Andreas N. Alexandrou. Vol. 175 New York, NY, United States : Publ by ASME, 1993. p. 39-48.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Iwai, T, Aizawa, T & Kihara, J 1993, Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding. in DA Siginer, WE VanArsdale, CM Altan & AN Alexandrou (eds), American Society of Mechanical Engineers, Applied Mechanics Division, AMD. vol. 175, Publ by ASME, New York, NY, United States, pp. 39-48, Proceedings of the 1993 ASME Winter Annual Meeting, New Orleans, LA, USA, 93/11/28.
Iwai T, Aizawa T, Kihara J. Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding. In Siginer DA, VanArsdale WE, Altan CM, Alexandrou AN, editors, American Society of Mechanical Engineers, Applied Mechanics Division, AMD. Vol. 175. New York, NY, United States: Publ by ASME. 1993. p. 39-48
Iwai, Takashi ; Aizawa, Tatsuhiko ; Kihara, Junji. / Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding. American Society of Mechanical Engineers, Applied Mechanics Division, AMD. editor / Dennis A. Siginer ; William E. VanArsdale ; Cengiz M. Altan ; Andreas N. Alexandrou. Vol. 175 New York, NY, United States : Publ by ASME, 1993. pp. 39-48
@inproceedings{a01b44b6accb4bbb9660f7b12f8fec11,
title = "Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding",
abstract = "Metal Injection Molding deals with the complex fluid which consists of thermoplastic polymer medium and dense metallic powder suspensions to improve flowability and formability. To understand its fundamental mechanical behavior, it is important to consider powder structures and mechanics precisely. For the analysis of this process, a new granular model is proposed, which is based on the Distinct Element Method. Each element in this method is constituted by combining a metal powder with a binder (polymer) shell surrounding it. Both elasticity and viscosity for powder particles and binders are only considered in this mixture model as the constitutive relations. Thermo-mechanical coupling method with mapping/remapping procedure is introduced into the present granular model to deal with the cooling process. Several numerical results have demonstrated the effectiveness and validity of our developed granular modeling to deal with the various phenomena appearing in MIM process.",
author = "Takashi Iwai and Tatsuhiko Aizawa and Junji Kihara",
year = "1993",
language = "English",
isbn = "0791810380",
volume = "175",
pages = "39--48",
editor = "Siginer, {Dennis A.} and VanArsdale, {William E.} and Altan, {Cengiz M.} and Alexandrou, {Andreas N.}",
booktitle = "American Society of Mechanical Engineers, Applied Mechanics Division, AMD",
publisher = "Publ by ASME",

}

TY - GEN

T1 - Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding

AU - Iwai, Takashi

AU - Aizawa, Tatsuhiko

AU - Kihara, Junji

PY - 1993

Y1 - 1993

N2 - Metal Injection Molding deals with the complex fluid which consists of thermoplastic polymer medium and dense metallic powder suspensions to improve flowability and formability. To understand its fundamental mechanical behavior, it is important to consider powder structures and mechanics precisely. For the analysis of this process, a new granular model is proposed, which is based on the Distinct Element Method. Each element in this method is constituted by combining a metal powder with a binder (polymer) shell surrounding it. Both elasticity and viscosity for powder particles and binders are only considered in this mixture model as the constitutive relations. Thermo-mechanical coupling method with mapping/remapping procedure is introduced into the present granular model to deal with the cooling process. Several numerical results have demonstrated the effectiveness and validity of our developed granular modeling to deal with the various phenomena appearing in MIM process.

AB - Metal Injection Molding deals with the complex fluid which consists of thermoplastic polymer medium and dense metallic powder suspensions to improve flowability and formability. To understand its fundamental mechanical behavior, it is important to consider powder structures and mechanics precisely. For the analysis of this process, a new granular model is proposed, which is based on the Distinct Element Method. Each element in this method is constituted by combining a metal powder with a binder (polymer) shell surrounding it. Both elasticity and viscosity for powder particles and binders are only considered in this mixture model as the constitutive relations. Thermo-mechanical coupling method with mapping/remapping procedure is introduced into the present granular model to deal with the cooling process. Several numerical results have demonstrated the effectiveness and validity of our developed granular modeling to deal with the various phenomena appearing in MIM process.

UR - http://www.scopus.com/inward/record.url?scp=0027805891&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027805891&partnerID=8YFLogxK

M3 - Conference contribution

SN - 0791810380

VL - 175

SP - 39

EP - 48

BT - American Society of Mechanical Engineers, Applied Mechanics Division, AMD

A2 - Siginer, Dennis A.

A2 - VanArsdale, William E.

A2 - Altan, Cengiz M.

A2 - Alexandrou, Andreas N.

PB - Publ by ASME

CY - New York, NY, United States

ER -