Analisa Proses Untuk Mencapai Nilai Kekerasan Maksimum Terhadap Baja SC 46 Melalui Perlakuan Panas Dengan Variasi Temperatur

Iksan, Ibnu Wahid Rowi (2006) Analisa Proses Untuk Mencapai Nilai Kekerasan Maksimum Terhadap Baja SC 46 Melalui Perlakuan Panas Dengan Variasi Temperatur. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Baja cor tipe SC 46 termasuk baja cor yang sulit untuk dikeraskan. Kekerasan material sebelum mendapat laku panas adalah 71,3 HRB. Berdasarkan teoritis material cor kekerasannya dapat ditingkatkan melalui laku panas dan sulit sekali melalui proses lain. Atas dasar teori ini penulis ingin mengetahui sejauh mana baja SC 46 dapat ditingkatkan kekerasannya melalui laku panas. Dalam penelitian ini dilakukan proses laku panas dengan variasi temperatur, yaitu pada benda kerja 1 dengan temperatur 850 °C, benda kerja 2 dengan temperatur 980 °C, dan benda kerja 3 dengan temperatur 1110 °C. Waktu penahanan 40 menit dan media pendingin air. Kemudian dilanjutkan dengan pengujian kekerasan dan pengamatan metallografi. Dari hasil penelitian ini didapatkan : temperatur 850 °C menghasilkan kekerasan yang maksimum, yaitu 102,4 HRB, sedangkan pada temperatur 980 °C menghasilkan kekerasan 95,8 HRB, dan pada tenperatur 1110 °C menghasilkan kekerasan 90, 1 HRB. Jadi, temperature yang paling sesuai untuk mencapai kekerasan maksimum pada penelitian ini adalah 850 °C
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SC 46 cast steel is a cast steel that is difficult to harden. The hardness of the material before being hot-treated is 71.3 HRB. Based on the theory of cast material, the hardness can be increased through hot-treatment and is very difficult through other processes. Based on this theory, the author wants to know to what extent the hardness of SC 46 steel can be increased through hot-treatment. In this study, the heat-treatment process was carried out with various temperatures, namely on workpiece 1 with a temperature of 850 °C, workpiece 2 with a temperature of 980 °C, and workpiece 3 with a temperature of 1110 °C. The holding time was 40 minutes and the cooling medium was water. Then continued with hardness testing and metallographic observations. From the results of this study, it was found that: a temperature of 850 °C produced a maximum hardness of 102.4 HRB, while at a temperature of 980 °C it produced a hardness of 95.8 HRB, and at a temperature of 1110 °C it produced a hardness of 90.1 HRB. So, the most suitable temperature to achieve maximum hardness in this study is 850 °C

Item Type:	Thesis (Diploma)
Additional Information:	RSM 671.36 Iks a-1 2006 (weeding)
Uncontrolled Keywords:	Baja SC 46, laku panas, temperatur, kekerasan; Steel SC 46, heat treatment, temperature, hardness
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN23 Metal cladding. T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy T Technology > TN Mining engineering. Metallurgy > TN752.Q4 Metals--Quenching
Divisions:	Faculty of Industrial Technology > Mechanical Engineering > 21401-(D3) Diploma 3
Depositing User:	EKO BUDI RAHARJO
Date Deposited:	09 Oct 2025 03:22
Last Modified:	09 Oct 2025 03:22
URI:	http://repository.its.ac.id/id/eprint/128532

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