An Investigation of Stainless Steel 316L Material Produced with Different Powder Injection Pressure Systems

I n this study, influence of hydrolic pressure or gas pressure on the powder injection molding of 316L stainless steel was investigated. Variations in the microstructure, hardness and density of the porduced samples were discussed in the frame of presure type. In the injection molding applied molding pressure, ratio of powder/binder, binder leacing time, sintering temperature also were examined. Experimental works showed that the gas pressure system was observed to be more effective than hydrolic pressure system for each parameters. Experimental results also showed that the powder ratio in the feedstock and sintering temperature had dominant effect on hardness and microstructure of the samples. The leaching time of Polyethylene Glycol PEG 600 binder has been decreased with increasing molding pressure. Increasing hardness and density of samples were achieved by increasing metal powder ratio. The increasing in hardness and density were also observed by increasing sintering temperature

Keywords:

Powder injection molding, Hydrolic pressure system, Gas pressure system, Debinding times, Sintering temperature Powder/binder ratio,

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ºC and (c) 1350 ºC for 1 h. 9. Li YM, Liu SJ, Qu XH, Huang, B. Thermal debinding processing of 316L stainless steel powder injection molding compacts. Journal of Materials Processing Technology 137 (2003) 65–69.
Koseski RP, Suri P, Earhardt NB, German RM, Kwon YS. Microstructural evolution of injection molded gas-and water-atomized 316L stainless steel powder during sintering. Materials Science and Engineering 390 (2005) 171–177.
Berginc B, Kampus Z, Sustarsic, B. Influence of Feedstock Characteristics and Process Parameters on Properties of MIM Parts Made of 316L. Powder Metallurgy 50 (2) (2007) 172–183.
Oğulcu F. Toz Enjeksiyon Kalıplamada Besleme Stoğunun Akıcılığına İşlem Parametrelerinin Etkisi, M. Sc. Thesis, Gazi University Instiute of Natural and Applied Sciences, Ankara, 2006.
Omar MA, Ibrahim R, Sidik MI, Mustapha M, Mohamad, M. Rapid debinding of 316L stainless steel injection moulded component. Powder Metallurgy Programme, Malaysia 140 (2003) 397-400.
Omar MA, Davies HA, Messer PF, Ellis, B. (2001) The influence of PMMA content on the properties of 316L stainless steel MIM compact. Powder Metallurgy Group, Advanced Materials Research Centre, SIRIM Berhad, Lot 34, Man 2/3, Kulim Hi- Tech Park, 09000 Kulim, Kedah, Malaysia Department of Engineering Materials, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield SI 3TD, UK, 477, pp. 4-81, 2001.
Kurt AO. Lecture Notes, Sakarya University Engineering Faculty Metallurgical and Materials Engineering Department, Sakarya, 2003.
Ji CH, Loh NH, Khor KA, Tor, SB. Sintering study of 316L stainless steel metal injection molding parts using Taguchi method: final density. School of Mechanical & Production Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 311, pp. 74-82, 2000.

Hittite Journal of Science and Engineering-Cover

Yayın Aralığı: Yılda 4 Sayı
Başlangıç: 2014
Yayıncı: HİTİT ÜNİVERSİTESİ

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