Fatmawati, Anni (2012) Pengaruh Suhu dan Waktu Holding Tempering dengan Media Pendingin Oli Mesran SAE 40 terhadap Distribusi Kekerasan Baja ST 60. Magister thesis, Universitas Brawijaya.
Abstract
Penelitian ini bertujuan untuk mengetahui pengaruh suhu dan waktu holding Tempering dengan media pendingin Oli Mesran SAE 40 terhadap distribusi kekerasaan baja ST 60. Proses temper dilakukan pada suhu 500°C, 400°C, dan 300°C dengan temperatur hardening 950°C menggunakan Quenc hing Oli Mesran SAE 40. Metode yang digunakan pada penelitian ini adalah penelitian eksperimental untuk spesimen adalah ST 60. Hasil uji komposisi menunjukkan material dasar termasuk dalam golongan medium carbon steel atau baja karbon menengah dengan kandungan carbon 0,452%. Pengujian kekerasan menggunakan Mikro Hardness Tester dimana kekerasan spesimen temper yang sebesar 255,5, dan kekerasan spesimen hardening sebesar 189,7 mengalami penurunan. Pengujian struktur mikro menunjukkan struktur mikro raw material terdiri dari ferit dan perlit dengan bentuk dan ukuran kristal yang berimbang sesuai dengan kandungan karbon 0,452. Saran yang diajukan dalam penelitian ini adalah variasi suhu pada proses tempering dan holding dengan variasi media pendingin serta variasi pada jenis bahan.
English Abstract
focus of this research is to know influence of tempering temperature and holding time using Mesran SAE 40 Oil as a cooling media towards hardening distribution of ST60 steel. temperature was set at 500 o C, 400 o C and 300 o C for tempering process, while hardening temperature was set 950 o C. For quenching stage, Mesran SAE 40 Oil was used as cooling media. A descriptive approach was applied in this research. As for material used as spesiment was a steel. Results showed composition of steel basically range as a medium carbon steel because it contains 0,452 % carbon. Hardeners test used a Micro Hardness Vicher`s Tester, where tempering spesiment is 255,5 and hardening specimen is 189,7, meaning it has decreased. Results from micro structure testing, shows that its micro structure consisting of ferit and perlit has equally big shaped cristals. Advice for fur r research is y shoulod be a variation in temperature during tempering and holding process and a variation of cooling media and type of material used for testing.
| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | TES/620.16/FAT/p/041202257 |
| Subjects: | 600 Technology (Applied sciences) > 620 Engineering and allied operations > 620.1 Engineering mechanics and materials |
| Divisions: | S2/S3 > Magister Teknik Elektro, Fakultas Teknik |
| Depositing User: | Endro Setyobudi |
| Date Deposited: | 19 Nov 2012 10:30 |
| Last Modified: | 19 Nov 2012 10:30 |
| URI: | http://repository.ub.ac.id/id/eprint/158598 |
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