SEÇİCİ LASER ERGİTME YÖNTEMİ İLE ÜRETİLMİŞ DIN 1.4404 MALZEMENİN EDM İLE İŞLENEBİLİRLİĞİ

Abstract

Bu çalışmada, diş protez ve implant üretiminde sıklıkla kullanılan, Seçici Lazer Ergitme metodu ile üretilmiş AISI 316 L (DIN 1.4404) malzemenin Elektro Erozyon yöntemi (EDM) ile işlenebilirliğinin araştırılması için deneysel çalışmalar gerçekleştirilmiştir. Deneylerde bakır ve grafit olmak üzere iki farklı elektrot kullanılmıştır. Akım (amper, I) ve pulse on-time (µs, ton) değerleri değiştirilerek deney parametreleri oluşturulmuştur. Elektrotlarda meydana gelen aşınma (EW) değerleri, yüzey pürüzlülük (Ra) değerleri ve malzemeden kalkan talaş kaldırma oranı (MRR) değerleri incelenmiştir.

Keywords

• EDM, İşlenebilirlik, Seçici laser ergitme

MACHINABILITY OF SELECTIVE LASER MELTED DIN 1.4404 MATERIAL WITH EDM

Abstract

In this study, experiments were performed in order to research the machinability of the implant material AISI 316L(DIN 1.4404), produced by the Selective Laser Melting (SLM), and Electrical Discharge Machining (EDM) methods. This material is the most frequently used implant material in the production of dentures and dental implants. In the experiments, copper and graphite electrodes were used. Experiment parameters were generated by changing the current (ampere, I) and pulse on-time (µs, ton ) values. After performing the experiments, the relationship between the Material Removal Rate (MRR), Electrode Wear (EW) of the material and Surface Roughness (Ra) values were investigated.

Keywords

• EDM, Machinability, Selective laser melting

References

1. Shellabear, M., Nyrhila, O., 2004. DMLS- Development history and state of the art.
2. LANE 2004 conference, Erlangen, Almanya.
3. Sinirlioğlu M. C., Rapid Manufacturing of Dental and Medical Parts via LaserCUSING® Technology using Titanium and CoCr Powder Materials,RapidTech 2009: US-TURKEY
4. Workshop on Rapid Technologies. Simon J.P., Fabry G., An ovverview of implant materials, Acta Orthopaedica Belgica, Vol.57 – 1 – 1991.
5. Çelik A., Bayrak Ö., Alsaran A., Kaymaz İ., Yetim A.F., Effects of plasma nitriding on mechanical and tribological properties of CoCrMo alloy, Surface & Coatings Technology 202 (2008) 2433–2438.
6. İnternet Kaynağı, Adres: www.metaldunyasi.com, Poyraz M., Sağın A., Ortopedik İmplant Malzemelerin Genel Özellikleri, Erişim Tarihi: 06.12.2010.
7. Brinksmeier E., Levy G., Meyer D., Spierings A.B., 2010, Surface integrity of selective- laser-melted components, CIRP Annals - Manufacturing Technology 59, 601–606.
8. Morgan, R., Sutcliffe, C.J., and O’Neill, W., 2001. Experimental Investigation of

9. Nanosecond Pulsed Nd:YAG Laser Re-melted Pre-placed Powder Beds. Rapid Prototyping Journal, 7 (3) (2001),159–172.
10. İnternet kaynağı, Adres: http://www.biyomalzeme.org.tr/VH.pdf, Erişim Tarihi: 08.2011
11. Puertas I., Luis C.J., Álvarez L., 2004, Analysis of the Influence of EDM Parameters on
12. Surface Quality, MRR and EW of WC–Co, Journal of Materials Processing Technology 153– , 1026–1032.
13. Kumar S., SinghR., SinghT.P., Sethi B.L., Surface Modification By Electrical Discharge Machining: A Review, Journal of Materials Processing Technology 209 (2009) –3687.
14. Valentincic, J., Junkar, M., 2004. On-line selection of rough machining parameters. J.
15. Mater. Process. Technol. 149, 256–262. Habib S.S., Study of the parameters in electrical discharge machining through response surface methodology approach, Applied Mathematical Modelling 33 (2009) 4397–44.