Startseite Investigation of the Moldability Parameters of PEG Based Steatite Feedstocks by Powder Injection Molding
Artikel
Lizenziert
Nicht lizenziert Erfordert eine Authentifizierung

Investigation of the Moldability Parameters of PEG Based Steatite Feedstocks by Powder Injection Molding

  • S. Erguney , C. Karatas , H. I. Unal und S. Saritas
Veröffentlicht/Copyright: 6. April 2013
Veröffentlichen auch Sie bei De Gruyter Brill

Abstract

In powder injection molding (PIM) barrel temperature, injection pressure and injection rate are important parameters for the molding of powder-binder mixtures. Improperly selected parameters lead to undesired problems such as separation of the powder-binder mixture and formation of collapses and cracks on the structure of the molded parts. In this study, steatite feedstocks based on PEG (polyethylene glycol) binders were injection molded into rectangular shape, ordered thickness with steps and zig-zag shaped mold cavities. The effects of the temperature and pressure of injection, rate of filling, temperature of the mold wall and geometry of the mold cavities were investigated. The optimum molding parameters of the feedstocks for the zig-zag shaped mold were determined to be an injection pressure of 80 to 140 MPa, a barrel temperature of 190 to 230°C, an injection rate of 5–25 · 10−6 m3 s−1 and a mold wall temperature of 32°C.


Mail address: Halil Ibrahim Unal, Gazi University, Faculty of Science, Department of Chemistry, Polymers Research Group, Ankara, Turkey. E-mail:

In memory of our friend and colleague Prof. Dr. Suleyman Saritas, who unfortunately passed away under tragic circumstances


References

Ahn, S., et al., “Effect of Powders and Binders on Material Properties and Molding Parameters in Iron and Stainless Steel Injection Molding Process”, Powder Tech., 193, 162169(2009), DOI: 10.1016/j.powtec.2009.03.010Suche in Google Scholar

Bakan, H. I., et al., “Study of Processing Parameters for MIM Feedstock Based on Composite PEG-PMMA Binder”, Powder Met., 41, 289291(1998)Suche in Google Scholar

BilovolV. V., et al., “Modelling of Transient Temperature Fields During Filling Stage of Powder Injection Moulding”, Powder Met., 43, 228232(2000), DOI: 10.1179/003258900665989Suche in Google Scholar

Cao, M., et al., “Usefulness of the Viscosity Measurement of Feedstock in PIM”, in Adv. in Pow. Met., MPIF, Princeton, New Jersey, p. 59(1991)Suche in Google Scholar

Erguney, M. S., “Investigation of Moldability of the Feedstocks Used in Powder Injection Molding”, M.Sc. Thesis, Gazi University, Ankara (2005)Suche in Google Scholar

Gaspervich, J. R., “Practical Application of Flow Analysis in Metal Injection Molding”, Int. J. Powder Met., 27, 133136(1991)Suche in Google Scholar

German, R. M.: Powder Injection Molding, Metal Powder Industries Federation, Princeton, New Jersey(1990)Suche in Google Scholar

German, R. M., Bose, A.: Injection Molding of Metals and Ceramics, Metal Powder Industries Federation, Princeton, New Jersey(1997)Suche in Google Scholar

German, R. M., et al., “KEF Issues in Powder Injection Moulding”, Am. Ceram. Soc. Bull., 70, 12941302(1991)Suche in Google Scholar

Gokten, M., “Investigation of Rheological Properties of the Feedstocks Composed of Steatite and 316L Stainless Steel Powders and PEG Based Resins”, M.Sc. Thesis, Gazi University, Ankara (2003)Suche in Google Scholar

Hens, K. F., et al., “Processing Conditions and Tooling for Powder Injection Molding”, Int. J. Powder Met., 27, 141146(1991)Suche in Google Scholar

Hens, K. F., “Tooling and Injection Molding in Powder Injection Molding”, Int. PIM Symp. Pen State University, Pennsylvania (1995)Suche in Google Scholar

Huang, B., et al., “The Rheology of Metal Injection Molding”, J. Mat. Process. Tech., 137, 132137(2003), DOI: 10.1016/S0924-0136(02)01100-7Suche in Google Scholar

Kale Porcelain Electronics Co.: Technical Ceramics, CEM Press, Istanbul, p. 243253(1997)Suche in Google Scholar

Karatas, C., “Rheological Properties of PIM Feedstocks”, Ph. D. Thesis, Gazi University, Ankara (1998)Suche in Google Scholar

Karatas, C., Saritas, S., “Rheological Properties of Mixed Gas and Water-atomized Stainless Steel Powder MIM Feedstock”, Int. J. Powder Met., 37, 3944(2001)Suche in Google Scholar

Karatas, C., et al., “Rheological Properties of Feedstocks Prepared with Steatite Powder and Polyethylene Based Thermoplastic Binders”, J. Mat. Proces. Tech., 152, 7783(2004), DOI: 10.1016/j.jmatprotec.2004.03.009Suche in Google Scholar

Kryachek, V. M., “Injection Moulding”, Powder Met. Metal Ceram., 43, 336348(2004), DOI: 10.1023/B:PMMC.0000048127.24809.d3Suche in Google Scholar

Lee, D., Hens, K. F., “Process Analysis of Injection Molding Products”, Adv. Powder Met., 1, 122127(1997)Suche in Google Scholar

Maeda, Y., et al., “Optimization of Green Compact Forming Conditions in Metal Injection Moulding”, J. Jap. Inst. Met., 60, 11081115(1996)Suche in Google Scholar

Mangels, J. A., Williams, R. M., “Injection Molding Ceramics to High Green Densities”, Ceram. Bull., 62, 601606(1983)Suche in Google Scholar

Nyberg, L., et al., “Guide to Injection Moulding of Ceramic and Hard Metals: Special Consideration of Fine Powder”, Powder Met., 41, 4145(1998)Suche in Google Scholar

Ruvolo-Filho, A., Magaton, M., “Evaluating Barrier Properties of Acrylic Polyurethane and Aliphatic Polyurethane Coatings Loaded with Micaceous Iron Oxide or Red Iron Oxide”, Polym.-Plast. Tech. Eng., 48, 682695(2009), DOI: 10.1080/03602550902824556Suche in Google Scholar

Uslan, I., et al., “Investigation of Sintering Behavior of Steatite Parts Produced by Powder Injection Molding”, Mat. Sci. Forum, 534, 549552(2007), DOI: 10.4028/www.scientific.net/MSF.534-536.549Suche in Google Scholar

Vacari, J. A., “Take a New Look at Metal Injection Moulding”, Am. Mach., 132, 4548(1988)Suche in Google Scholar

Wang, G., et al., “Research on a New Variotherm Injection Molding Technology and its Application on the Molding of a Large LCD Panel”, Polym.-Plast. Tech. Eng., 48, 671681(2009), DOI: 10.1080/03602550902824549Suche in Google Scholar

Youseffi, V., Menzies, I. A., “Injection Moulding of WC-6 % Co Powder Using Two New Binder Systems Based on Montan Ester Waxes and Water-soluble Gelling Polymers”, Powder Met., 40, 6265(1997)Suche in Google Scholar

Received: 2010-06-09
Accepted: 2010-12-28
Published Online: 2013-04-06
Published in Print: 2011-05-01

© 2011, Carl Hanser Verlag, Munich

Heruntergeladen am 25.9.2025 von https://www.degruyterbrill.com/document/doi/10.3139/217.2382/html
Button zum nach oben scrollen