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All Journal Journal of Mechanical Science and Engineering Indonesian Journal of Engineering and Science (IJES)
Nukman Nukman
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Sriwijaya, Indralaya 30662, South Sumatera, Indonesia
Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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The Carburizing Process of Low Carbon Steel with Charcoal Media Yahya Yahya; Nukman Nukman; Hendri Chandra
Journal of Mechanical Science and Engineering Vol 1, No 1 (2013): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.502 KB)

Abstract

Ringkasan Proses karburisasi dilakukan untuk meningkatkan mutu kekuatas suatu baja karbon rendah dengan biaya yang rendah. Material yang digunakan adalah jenis baja karbon rendah dengan nilai karbon 0,25. Proses karburisasi pada baja karbon rendah dilakukan pada temperatur 900oC dengan holding time 90 menit menggunakan media arang tulang kambing dan tempurung kelapa. Penggunaan karburiser arang tulang kambing menghasilkan nilai kekerasannya lebih tinggi dari baja karbon dengan media arang tempurung kelapa. Hasil pengujian nilai karbon baja setelah proses karburisasi dengan tempurung kelapa adalah 0,423 sedangkan setelah proses karburisasi dengan tulang kambing nilai karbon nya hanya 1,593. Kata Kunci : Proses Karburisasi, Uji kekerasan, Uji Tarik, Uji Impak, dan struktur mikro. Abstract Carburizing process is carried out to improve the power quality of a low carbon steel with a low cost.The material used is a type of low carbon steel with a carbon value of 0.25. Carburizing process on medium carbon steel at a temperature of 900°C with a holding time of 90 minutes using goat bone and coconut shel char medial. The use of goat  bone charcoal karburiser produces higher hardness values of carbon steel with coconut shell charcoal media. Results of testing the value of carbon steel after carburizing processes with coconut shell was 0,423 whereas after carburizing process with goat bone carbon value of only 1,593 Keywords: carburizing process, hardness test, Tensile Test, Impact Test, and microstructure.
ENERGY ACTIVATION OF DECOMPOSITION OF CASTINGS OF PURE ALUMINUM-STANNUM ALLOY Aldika Aldika; Nukman Nukman
Indonesian Journal of Engineering and Science (IJES) Vol. 3 No. 2 (2022): Table of Content
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v3i2.60

Abstract

Thermogravimetry analyser is a tool to perform thermal analysis where the mass of the test material will be inversely or directly proportional to the increasing temperature rate and a function of time (constantly increasing temperature). The results of the TGA test are a comparison of mass to times, mass to DTA, and the ln k to 1/t; all relations to determine the oxidation point and activation energy required for each sample can be known. The samples used were 4: pure aluminium, pure aluminium mixed with 2% Sn, pure aluminium mixed with 6% Sn, and pure aluminium mixed with 10% Sn. The activation energy required for each sample is as follows, pure Aluminium of 64.24 kJ/mol, pure Aluminium mixed with 2% Sn of 58.70 kJ/mol, pure aluminium combined with 6% Sn of 16.63 kJ/mol and Aluminium pure mixed with 10% Sn at 47.68 kJ/mol.
Co-Authors Aldika Aldika Hendri Chandra Yahya Yahya