Application of powder injection moulding for manufacturing of tool composite materials

• Autorzy: Matula G. , Jędrzejewska-Anioł A. , Niespodziański J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The goal of this work is development of the tool composites on the basis of T15 HSS contained 10% of carbides. This tool material were manufactured by Powder Injection Moulding method and sintered. Design/methodology/approach: Torque-load test, rheological tests, thermal debinding, sintering, hardness test and microstructure examinations. Findings: Examination of the effect of the binder type and portion on structure and properties of the experimental tool materials revealed that using the stearic acid for covering the carbides surface reduces viscosity, thus improving technological properties of the feedstock. Employment of polypropylene instead of the high density polyethylene reduces viscosity and torque-load of the investigated feedstocks. Therefore, there is a possibility to increase the portion of the metallic and ceramic powder. Practical implications: Stearic acid significantly reduces the viscosity of tested polymer-powder mixtures, so its use is justified. The share of the binder in materials, injection molded or extruded should be minimal and allows only the formation of the slurry. Too high proportion of binder creates difficulties during the degradation and causes greater shrinkage and possibility of a distortion during sintering. Employment of polyethylene instead of the high density polypropylene reduces viscosity and torque-load of the investigated feedstocks. Therefore, there is a possibility to increase the portion of the metallic or ceramic powder. This results in a lower deformation probability and in a lower sinter shrinkage. Originality/value: In the paper the using extruding of the polymer-powder mix gives the possibility to fabricate cermets which, with their structure and mechanical properties, fill the gap in tool materials between the high-speed steels and cemented carbides.

Słowa kluczowe

EN

powder metallurgy; extrusion; powder injection moulding; feedstock; tool materials

PL

metalurgia proszków; wyciskanie; formowanie wtryskowe proszku; substraty; materiały narzędziowe

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2013
• Tom: Vol. 59, nr 2
• Strony: 80--85
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Matula G.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Jędrzejewska-Anioł A.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Niespodziański J.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

Bibliografia

• [1] J. Nowacki, Polyphase sintering and properties of metal matrix composites, Journal of Materials Processing Technology 175 (2006) 316-323.
• [2] E. Pagounis, V.K. Lindroos, Processing and properties of particulate reinforced steel matrix composites, Materials Science and Engineering A 246 (1998) 221-234.
• [3] B. Ralph, H.C. Yuen, W.B. Lee, The processing of metal matrix composites - an overview, Journal of Materials Processing Technology 63 (1997) 339-353.
• [4] D. Lou, J. Hellman, D. Luhulima, J. Liimatainen, V.K. Lindroos, Interactions between tungsten carbide (WC) particulates and metal matrix in WC-reinforced composites, Materials Science and Engineering A 340 (2003) 155-162.
• [5] J.M. Torralba, E. Gordo, PM High Speed Steel matrix composites - State of the art Powder Metallurgy Progress 2/1 (2002) 1-9.
• [6] W.D. Callister, Fundamentals of Materials Science and Engineering, New York, 2001.
• [7] R.M. German, A-Z of Powder Metallurgy, Mississippi, 2005.
• [8] M. Rosso, Ceramic and metal matrix composites: Routes and properties, Journal of Materials Processing Technology 175 (2006) 364-375.
• [9] G.S. Upadhyaya, Sintered metallic and ceramic materials. Preparaion, properties and application, England, 2000.
• [10] R. Cornwall, PIM 2001 airs industry's successes and challenges, Metal Powder Report, 2001, 10-13.
• [11] R.M. German, Divergences in global powder injection moulding, Powder Injection Moulding International 2/1 (2008) 45-49.
• [12] R.M. German, Alternatives to powder injection moulding: variants on almost the same theme, Powder Injection Moulding International 4/2 (2010) 31-40.
• [13] H.Ö. Gülsoy, Mechanical properties of injection moulded 316L stailess steel with (TiC)N additions, Powder Metallurgy 50/3 (2007) 271-275.
• [14] L. Liu, N.H. Loh, B.Y. Tay, S.B. Tor, Y. Murakoshi, R. Maeda, Mixing and characterisation of 316L stainless steel feedstock for micro powder injection molding, Materials Characterization 54 (2005) 230-238.
• [15] F. Petzoldt, Metal injection moulding in Europe: ten facts that you need to know, Powder Injection Moulding International 1/2 (2007)23-28.
• [16] R.M. German, Powder injection moulding - design and application, PA 16803 USA, 2003.
• [17] H. Ye, X.Y. Liu, H. Hong, Fabrication of metal matrix composites by metal injection molding-A review, Journal of Materials Processing Technology 200 (2008) 12-24.
• [18] G. Matula, L.A. Dobrzański, A. Várez, B. Levenfeld, Development of a feedstock formulation based on PP for MIM of carbides reinforced M2, Archives of Materials Science and Engineering 27/2 (2008) 195-198.