Abstract

AISI 1020 steel is a low-carbon steel that is currently widely used on the market as a raw material for making industrial and automotive components such as gears. Therefore, it is necessary to increase the hardness of AISI 1020 steel through a heat treatment process, one of which is using the pack carburizing method. This research aims to analyze the microstructure and case of depth of AISI 1020 steel after the pack carburizing process. The pack carburizing method was used in this research because this method can optimally increase the surface hardness of steel. AISI 1020 steel was used as the main material in this research, coconut shell charcoal was added as a carbon source, and Na₂CO₃ as an energizer. The quenching process uses SAE 20w-40 oil. In this research, the pack carburizing process uses variations in temperature and holding time of 850^oC, 875^oC, 900^oC and 40 minutes, 50 minutes respectively. The results of highest case of depth obtained at a temperature of 900^oC with a holding time of 50 minutes of 0.46µm. It can be concluded that the pack carburizing heat treatment process has an influence on the microstructural components of pearlite and ferrite. The case of depth resulting from heat treatment also increases along with increasing temperature and holding time for the pack carburizing process.

Baja AISI 1020 merupakan baja karbon rendah yang saat ini banyak digunakan di pasaran sebagai bahan baku dalam pembuatan komponen perindustrian dan otomotif seperti roda gigi. Oleh sebab itu perlu dilakukannya peningkatan kekerasan pada baja AISI 1020 melalui proses perlakuan panas, salah satunya menggunakan metode pack carburizing. Penelitian ini bertujuan untuk menganalisa ketebalan lapisan permukaan dari baja AISI 1020 setelah dilakukan proses pack carburizing. Metode pack carburizing digunakan dalam penelitian ini karena metode tersebut dapat meningkatkan kekerasan permukaan pada baja secara optimal. Baja AISI 1020 digunakan sebagai bahan utama dalam penelitian ini, ditambahkan arang tempurung kelapa sebagai sumber karbon dan Na2CO3 sebagai energizier. Proses quenching menggunakan media oli SAE 20w-40. Dalam penelitian ini, proses pack carburizing menggunakan variasi temperatur dan waktu tahan masing-masing 850^oC, 875^oC, 900^oC dan 40 menit, 50 menit. Hasil analisa ketebalan lapisan paling tinggi didapatkan pada temperatur 900^oC waktu tahan 50 menit sebesar 0,46µm. Dapat disimpulkan bahwa proses perlakuan panas pack carburizing memberikan pengaruh terhadap komponen struktur mikro pearlite dan ferrite. Ketebalan permukaan hasil perlakuan panas juga mengalami kenaikan seiring dengan meningkatnya temperatur dan waktu tahan proses pack carburizing.

There is no Figure or data content available for this article

References

• [1] N. Maharjan, W. Zhou, and N. Wu, “Direct laser hardening of AISI 1020 steel under controlled gas atmosphere,” Surf. Coatings Technol., vol. 385, no. January, p. 125399, 2020, doi: 10.1016/j.surfcoat.2020.125399.

  [2] E. Santoso, F. Fatkhurrohman, A. R. Firmansyah, and S. C. Putra, “Hardness and Microstructural Characterization of Pack carburizing AISI 1020 Low-Carbon Steel by Temperatur and Holding Time Variations,” Adv. Sustain. Sci. Eng. Technol., vol. 6, no. 1, p. 02401023, 2024, doi: 10.26877/asset.v6i1.17583.

  [3] M. M. A. Bepari, Carburizing: A Method of Case Hardening of Steel, vol. 2–3. Elsevier Ltd., 2017. doi: 10.1016/B978-0-12-803581-8.09187-6.

  [4] R. R. Sakura and D. D. Iskandar, “Pengaruh Variasi Karbon Aktif dan Waktu Tahan Terhadap Kekerasan Material JIS G-3123 Menggunakan Metode Pack carburizing,” vol. 2, no. 1, pp. 31–35, 2017.

  [5] H. Hariningsih, T. Daryanto, and L. Lutiyatmi, “Pengaruh Variasi Media Quenching dan Tempering terhadap Struktur Mikro dan Kekerasan Baja AISI 1045,” Creat. Res. Eng., vol. 2, no. 2, p. 52, 2022, doi: 10.30595/cerie.v2i2.14317.

  [6] M. Margono, B. H. Priyambodo, and K. C. Nugroho, “Pengaruh Laju Pendingin Pada Proses Heat Treatment Terhadap Kekerasan Dan Struktur Mikro Baja Karbon S45C,” Creat. Res. Eng., vol. 1, no. 2, p. 60, 2021, doi: 10.30595/cerie.v1i2.10848.

  [7] E. Sundari, R. Fahlevi, and B. Besar, “Mekanis Sprocket Imitasi Sepeda Motor Menggunakan Katalisator,” J. Austenit, vol. 10, no. 2, pp. 72–78, 2018.

  [8] M. A. Rizki et al., “Pengaruh Proses Pack carburizing Dengan Variasi Temparatur Dan Karbon Aktif Terhadap Kekerasan Permukaan Baja Aisi 1020,” vol. 6, no. 2, pp. 63–67, 2022, [Online]. Available: http://e-jurnal.pnl.ac.id/mesinsainsterapan/article/view/3323/2708

  [9] “Wire rod steel product of PT. Krakatau Steel, "Katalog produk PT. Krakatau Steel,"Krakatau steel press, 2018.

  [10] D. Maritza, M. Cardona, J. Wongsa-ngam, H. Jimenez, and T. G. Langdon, “Effects on hardness and microstructure of AISI 1020 low-carbon steel processed by high-pressure,” Integr. Med. Res., no. x x, pp. 2–7, 2017, doi: 10.1016/j.jmrt.2017.05.002.

  [11] M. N. Nasution, “Analisak Ekerasan Dan Struktur Mikro Baja Aisi1020 Terhadap Perlakuan Carburizing Dengan Arang Tempurung Kelapa,” Bul. Utama Tek., vol. 15, no. 2, p. 165, 2020.

  [12] K. Genel and M. Demirkol, “Effect of case depth on fatigue performance of AISI 8620 carburized steel,” vol. 21, pp. 207–212, 1999.

  [13] N. Shell, W. Powders, and C. Duration, “Effective Case Depth and Wear Resistance of Pack Carburized,” 2022.

There is no Supplemental content for this article.

How to Cite This

Article Metrics

Copyright and Permissions

This work is licensed under a Creative Commons Attribution 4.0 International License.

Data Availability