Pengaruh Waktu Tempering Pada Temperatur 160°C Dengan Proses Quench Temper Terhadap Kekerasan Dan Kekuatan Impak Baja Pegas Daun Bekas Sebagai Bahan Pisau

Shohibul Awliya', Shahin (2017) Pengaruh Waktu Tempering Pada Temperatur 160°C Dengan Proses Quench Temper Terhadap Kekerasan Dan Kekuatan Impak Baja Pegas Daun Bekas Sebagai Bahan Pisau. Diploma thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Baja dapat digunakan sebagai bahan berbagai macam produk. Baja pegas daun bekas pun masih bisa dimanfaatkan, seperti sebagai bahan pembuatan pisau. Kualitas dari suatu produk dengan bahan logam tergantung pada proses pembuatannya, yaitu pada proses perlakuan panas yang dilakukan. Proses pengerasan dilakukan pada temperatur austenisasi 850°C, penahanan selama 60 menit, kemudian dilakukan proses quenching menggunakan media oli. Spesimen yang telah dilakukan pengerasan dilanjutkan proses tempering pada temperatur 160°C. Masing-masing diberi penahanan selama 50 menit, 70 menit, dan 90 menit kemudian dilakukan pendinginan udara. Pengujian yang dilakukan pada penelitian ini yaitu pengujian kekerasan dan pengujian impak. Hasil pengujian menunjukkan bahwa nilai kekerasan semakin menurun seiring bertambahnya waktu tempering, yaitu 49,2 HRC, 47,4 HRC, 46,42 HRC. Sedangkan impact strength semakin meningkat seiring bertambahnya waktu tempering, yaitu 0,00479 kgm/mm2, 0,00565 kgm/mm2, dan 0,00686 kgm/mm2. ===================================================================================================== Steel can be used as various products material. Leaf spring steel can be used too, for knife as example. The quality of metal product depens on its manufacturing process, which is on heating treatment that is used. Hardening process had been done at austenisation temperature 850˚C and holding time 60 minutes, then oil cooler had been used as media at quenching process. After hardened, specimens were tempered at temperature 160˚C. Each of specimens had been being given holding time for 50, 70, and 90 minutes then were cooled down by the normal temperature air. The test that was done in this study is test of hardness and impact strength. Based on the data in this study, the value of hardness will decrease gradually by the tempering time, its 49,2 HRC, 47,4 HRC, 46,42 HRC. Whereas, the value of impact strength will increase gradually by the tempering time, its 0,00479 kgm/mm2, 0,00565 kgm/mm2, dan 0,00686 kgm/mm2.

Item Type: Thesis (Diploma)
Additional Information: RSMI Sho p-1
Uncontrolled Keywords: baja pegas daun, quenching, tempering, holding time
Subjects: T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment
T Technology > TS Manufactures > TS156 Quality Control. QFD
Divisions: Faculty of Industrial Technology > Mechanical Engineering > (D3) Diploma
Depositing User: Shahin Shohibul Awliya`
Date Deposited: 12 Jan 2018 04:12
Last Modified: 05 Mar 2019 04:37
URI: http://repository.its.ac.id/id/eprint/48321

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