Orclever Proceedings of Research and Development

Investigation of Suitable Production Conditions of High Extension Cast Iron (EN-GJS-400-18)

Zafer Ay

Demisaş A.Ş

https://orcid.org/0009-0004-2511-1863

Fatih Apaydın

Bilecik Şeyh Edebali Üniversitesi

https://orcid.org/0000-0002-6905-7465

DOI: https://doi.org/10.56038/oprd.v3i1.311

Keywords: Nodular graphite cast iron, GGG, EN-GJS-400-18

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Abstract

EN-GJS-400-18 spherical cast iron materials are widely used in the automotive, construction, mining, metallurgy, and machinery manufacturing sectors due to their high strength, ductility, toughness, low melting point, good fluidity, and good machinability properties. There are various difficulties in always producing at the same standard under mass production conditions. The most important of these difficulties is the lack of availability of raw materials of the same purity. In this study, it is aimed to produce EN-GJS-400-18 ductile iron material, which is difficult to produce in terms of mass production practice in foundries, in accordance with serial conditions. For this purpose, the effects of Si, carbide-forming elements Cu and Mo, and casting material diameter on the microstructure and mechanical properties of EN-GJS-400-18 spherical graphite cast iron were examined. As a result of the experiments, it was seen that the 20 mm diameter sample with the content of %Si:3.10, %Mo:0.001, %Cu:0.03 was obtained with the highest elongation value of 22.38%. It has been determined that the minimum ferrite ratio in the microstructure of this material is 80% and the number of nodules per mm2 is 600, which will reveal superior mechanical properties.

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References

E. Sevgi, “Küresel Grafitli Dökme Demirlerin Isıl İşlem Şartlarının Mekanik ve Mikroyapı Özelliklerine Etkisinin İncelenmesi,” 2019.

B. Ateş, “Katı Çözelti Sertleşmesinin Küresel Grafitli Dökme Demirin Dönel Eğme Yorulma Davranışına Etkisi,” Yüksek Lisans Tezi, İstanbul Teknik Üniversitesi (İTÜ), Fen Bilimleri Enstitüsü, İstanbul, 2013.

M. Çelikbilek, “EN-JS1020 Küresel Grafitli Dökme Demirin Delme İşleminde Yüzey Pürüzlülüğünün İstatistiksel Değerlendirilmesi,” Yüksek Lisans Tezi, Fen Bilimleri Enstitüsü, Karabük, 2015.

E. Öztürk, “Östemperleme Sıcaklığının Küresel Grafitli Dökme Demirlerin Mikroyapı ve Mekanik Özelliklerine Etkisi,” Yüksek Lisans, Konya Teknik Üniversitesi, Lisansüstü Eğitim Enstitüsü, Konya, 2019. DOI: https://doi.org/10.36306/konjes.613878

A. Çetin, Katı Çözeltiyle Güçlendirilmiş Ferritik Sfero Dökme Demirler, 3rd ed. 2016.

E. Karadeniz, M. Çolak, and F. Barutçu, “GGG-60 KÜRESEL GRAFİTLİ DÖKME DEMİR ÜRETİMİNDE AŞILAYICI TÜRÜ VE MİKTARININ İÇYAPI VE MEKANİK ÖZELLİKLERE ETKİSİNİN İNCELENMESİ,” 2017. DOI: https://doi.org/10.28948/ngumuh.298199

K. A. Jafar and A. A. Behnam, “Influence of Mold Preheating and Silicon Content on Microstructure and Casting Properties of Ductile Iron in Permanent Mold,” Journal of Iron and Steel Research International, vol. 18, no. 3, pp. 34–39, 2011, doi: 10.1016/S1006-706X(11)60034-4. DOI: https://doi.org/10.1016/S1006-706X(11)60034-4

İ. Karaca, “Küresel grafitli dökme demirlerin üretiminde metalurjik silisyum karbür ve ferro silis katkılarının malzeme üzerindeki etkilerinin araştırılması,” Bilecik Şeyh Edebali Üniversitesi, 2022. [Online]. Available: https://www.who.int/news-room/fact-sheets/detail/autism-spectrum-disorders

M. A. Yalçın, “Optimization of Alloying and Heat Treatment Process Parameters of Austempered Ductile Iron (ADI) Casting,” Degree of Master of Science, Atılın University, The Graduate School of Natural and Applied Sciences, Ankara, 2019.

M. Çoşar, “Küresel grafitli dökme demir dökümünde dolum hızı, döküm sıcaklığı ve metalurji kalitesinin farklı kesit kalıkları üzerinde akıcılık özelliklerine etkisinin incelenmesi,” Gümüşhane Üniversitesi, 2022. [Online]. Available: https://www.who.int/news-room/fact-sheets/detail/autism-spectrum-disorders

M. Pascual, J. Cembrero, F. Salas, and M. Pascual Martínez, “Analysis of the weldability of ductile iron,” 2007, doi: 10.1016/j.matlet.2007.08.070. DOI: https://doi.org/10.1016/j.matlet.2007.08.070

C. Hartung, R. Logan, A. Plowman, D. Wilkinson, E. G. Hoel, and E. Ott, “Research on Solution Strengthened Ferritic Ductile Iron (SSFDI) Structure and Properties Using Different Treatment and Inoculation Materials,” International Journal of Metalcasting, vol. 14, no. 4, pp. 1195–1209, 2020, doi: 10.1007/s40962-020-00469-4. DOI: https://doi.org/10.1007/s40962-020-00469-4

F. İlçin, “Molibden ve nikel içeren küresel grafitli dökme demirlerde östemperleme ısıl işlemi ile mekanik özelliklerindeki değişimin araştırılması,” Konya Teknik Üniversitesi, 2022.