PENGARUH PENAMBAHAN PROSES INOKULASI TERHADAP STRUKTUR MIKRO DAN KEKERASAN PRODUK COR DENGAN MATERIAL FC 250

  • Sabtun Ismi Khasanah Politeknik Manufaktur Ceper
  • Muhammad Zikri Niamillah POLITEKNIK MANUFAKTUR CEPER
  • Danis Aditya Mardani POLITEKNIK MANUFAKTUR CEPER
  • Suparni Suparni POLITEKNIK MANUFAKTUR CEPER
Keywords: inoculation, FC-250, microstructure, hardness

Abstract

The inoculation process in metal casting is needed to make grey cast iron or nodular cast iron. Inoculation aims to increase the number of freezing nuclei and promotes the formation of a homogeneous microstructure. This research aims to determine the effect of the inoculation addition process on the microstructure and hardness of PP products with FC-250 material. The changes made include changes to the inoculation process and changes to the chemical composition of the induction furnace. Changes in the inoculation process include changing the inoculation process which was initially only carried out on ladles with an inoculation material weight of 0.5 kg to 2 processes, namely on ladles with an additional weight of 0.8 kg of inoculation material and an inoculation process on crucible (kowi) with an additional material weight of 0.4 kg. The results of the metallography test after the additional inoculation process showed that the pearlite and ferrite graphite spread evenly and fell into Type-A graphite. The hardness test results show that the effect of adding inoculation changes the level of hardness so that it complies with ASTM 40 specifications/standards, namely 180 – 302 HB. The hardness value after the addition of the inoculation process was 190 HB.

References

A. D. S. De Jesus and G. Soebiyakto, “Analisis Uji Tarik Dan Metalografi Sifat Mekanik Besi Tuang Kelabu (Fc-20) Dengan Proses Heat Treatment,” Proton, vol. 10, no. 1, pp. 25–29, 2018, doi: 10.31328/jp.v10i1.804.

Y. Umardani et al., “Dengan Metode Fluiditas Strip Mould,” vol. 11, pp. 5–12, 2009.

M. Doloksaribu and E. Afrilinda, “Pengaruh Krom Terhadap Sifat Mekanik dan Struktur Mikro pada Besi Cor Nodular 400,” Met. Indones., vol. 38, no. 1, pp. 8–13, 2016, [Online]. Available: http://jurnalmetal.or.id/jmi/article/view/7.

S. I. Khasanah and F. Habib, “Analisa Perbandingan Komposisi Unsur Mg terhadap Pembulatan Grafit dan Kekerasan Prosuk Presure Plate,” J. Foundry, vol. 5, no. 2, pp. 38–45, 2022.

T. Sarkar and G. Sutradhar, “Influence of austenitizing temperature on microstructure and mechanical properties of austempered gray iron (AGI),” Mater. Today Proc., vol. 4, no. 9, pp. 10138–10143, 2017, doi: 10.1016/j.matpr.2017.06.336.

E. Fraś and M. Górny, “Inoculation Effects of Cast Iron,” Arch. Foundry Eng., vol. 12, no. 4, pp. 39–46, 2012, doi: 10.2478/v10266-012-0104-z.

A. Fay, “Influence of inoculation on cast iron machinability: Case studies,” China Foundry, vol. 17, no. 2, pp. 150–157, 2020, doi: 10.1007/s41230-020-9152-0.

A. Suhadi and Seodihono, “Teknologi Inokulasi Besi Cor Kelabu Fc-250 Untuk Mencegah Pengerasan Pada Dove Tale Inoculation Technology of Gray Cast Iron Fc-250 To Prevent Solidification on Done Tale Ragum,” vol. 16, no. 2, pp. 40–48, 2014.

Sutiyoko, M. Z. Al Jufry, and A. Syamsudin, “Effect of Inoculation Method on Composition and Hardness of Grey Cast Iron,” Pengaruh Metod. Inokulasi Terhadap Komposisi Dan Kekerasan Besi Cor Kelabu, vol. 6, no. 2, pp. 20–26, 2023, [Online]. Available: https://www.pinhome.id/kamus-istilah-properti/besi-cor/.

W. Huang, Z. Y. Su, C. S. Wang, M. Yeh, and J. H. Chou, “Graphite Classification of Gray Cast Iron in Metallographic via A Deep Learning Approach,” J. Internet Technol., vol. 23, no. 4, pp. 889–895, 2022, doi: 10.53106/160792642022072304023.

E. E. T. ELSawy, M. R. EL-Hebeary, and I. S. E. El Mahallawi, “Effect of manganese, silicon and chromium additions on microstructure and wear characteristics of grey cast iron for sugar industries applications,” Wear, vol. 390–391, no. July, pp. 113–124, 2017, doi: 10.1016/j.wear.2017.07.007.

P. S. C. Borse and Y. E. Mangulkar, “I nternational J ournal of I nnovative R esearch in S cience , E ngineering and T echnology Review on Grey Cast Iron Inoculation,” vol. 3, no. 4, pp. 30–36, 2014.

E. P. Elenwa, “Rapid Solidification of Cast Iron,” Sci. Res. J., vol. VII, no. II, pp. 74–81, 2019, doi: 10.31364/scirj/v7.i2.2019.p0219617.

D. M. Stefanescu, “Solidification and modeling of cast iron - A short history of the defining moments,” Mater. Sci. Eng. A, vol. 413–414, no. December 2005, pp. 322–333, 2005, doi: 10.1016/j.msea.2005.08.180.

Published
2024-02-20
How to Cite
[1]
Sabtun Ismi Khasanah, M. Zikri Niamillah, D. Aditya Mardani, and S. Suparni, “PENGARUH PENAMBAHAN PROSES INOKULASI TERHADAP STRUKTUR MIKRO DAN KEKERASAN PRODUK COR DENGAN MATERIAL FC 250”, Journal Foundry, vol. 7, no. 1, pp. 27-33, Feb. 2024.