The Improvement of Wear and Impact Resistance of High Chromium White Cast Iron for Crusher

https://doi.org/10.22146/jmpc.68282

Ridho Sabdo Prayogo(1*), Lilik Dwi Setyana(2)

(1) Vocational College Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
(2) Vocational College Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
(*) Corresponding Author

Abstract


Crusher is a component of heavy equipment used to break rocks or solid materials into a needed size. Crusher that is made of high chromium white cast iron will endure friction and impact forces. The quality improvement of the crusher is needed for enduring its service life. This research is conducted to determine the influence of heat treatment on the wear and impact resistance of the crusher. The material used in this research was high chromium white cast iron with some main compositions such as 18.5%wt Cr, 2.1%wt C, and 2.8%wt Ni. The heat treatment carried out was austenitization at a temperature of 1000ºC, followed by the quenching, quenching-tempering, normalizing, and annealing process. The tests carried out for the characterization of mechanical properties were Vickers hardness, impact, and wear rate. Meanwhile, observation was conducted to examine the microstructure of the specimen. Based on the observations, the microstructure of the specimen is dominated by M7C3 eutectic carbide, retained austenite and martensite. The highest hardness of the high chromium white cast iron (788 VHN) is a specimen with austenitizing-quenching (up 16% compared to normalizing specimens) and gradually decreases (up to 12%) after the 450ºC tempering. The highest wear resistance (8.1E-6 mm³/kg.m) is the specimen with tempering at 450ºC. The highest impact strength (0.055 J/mm²) occurs in the normalizing process. Hence, the heat treatment that can produce optimal properties to be applied in the crusher is tempering with the temperature of 450ºC.

Keywords


high chromium white cast iron, crusher, heat treatment, wear rate.

Full Text:

PDF


References

Aziz, A. E., Zohdy, K., Saber, D., dan Sallam, H.E.M. 2015. Wear and Corrosion Behavior of High-Cr White Cast Iron Alloys in Different Corrosive Media. Journal Bio Tribo Corrosion. Vol. 1:25. Hal. 1-12.

Bedolla, K. A., Arias, L., dan Hernandez, B. 2003. Kinetics of Secondary Carbides Precipitation in a High-Chromium White Cast Irons. Journal of Materials Engineering and Performance. Hal. 371-382.

Clark, D.S., dan Varney, W. R. 1952. Physical Metallurgy for Engineers. Van Nostrand. New York.

Fairhust, W., dan Rohrig, K. 1974. Abrasion-Resistant High-Chromium White Cast Irons. Foundry Trade Journal. Vo. 5. Hal. 685-695.

Furqon, M., dan Sugiyana, D. 2011. Pengendalian Matriks Austenit – Martensit Melalui Proses Perlakuan Panas pada Besi Cor Putih Paduan Chromium Tinggi untuk Material Bola Pelumat. Metal Indonesia. Vol. 33, No. 2. Hal. 94-99.

Huang, X. 2001. The effect of Mo on the structure of high Cr-Mo alloy iron. Journal Material Engineering Perform. Vol. 10(5). Hal. 592–595.

Li, D. 2009. Phase Diagram Calculation of High Chromium Cast Iron and Influence of It’s Chemical Composition. Material and Design. Hal. 340-345.

Long, S.Y., Dan, Li., Kun, Z.X. 2006. Optimizing Hardenability of High Chromium White Cast Iron. China Foundry. Vol. 3. No. 4. Hal. 284-287

Pearce, J.T.H. 2002. High-Chromium Cast Irons to Resist Abrasive Wear. Foundryman Vol. 95, No. 4. Hal. 156–166

Powell, G., Randle, V. 1997. The effect of Si on the relation between orientation and carbide morphology in high chromium white irons. Journal Material Science. Vol. 32:56

Shofi, A., Astuti, W., dan Nurjaman, F. 2013. Karakteristik Struktur Mikro dan Sifat Mekanik Besi Tuang Putih Paduan Krom Tinggi Hasil Thermal Hardening untuk Aplikasi Grinding Ball. Majalah Metalurgi. V 28.3.2013. Hal. 177-184.



DOI: https://doi.org/10.22146/jmpc.68282

Article Metrics

Abstract views : 512 | views : 521

Refbacks

  • There are currently no refbacks.