Pengaruh proses nitridasi dengan parameter prehardened yang berbeda terhadap struktur mikro nilai kekerasandan perubahan dimensi baja perkakas SKD 11 = Effect of nitriding processes with different prehardened parameters on the microstructure hardness and dimensional changes of the SKD 11 tool steel
| Main Author: | Adri Fato, author |
|---|---|
| Format: | Masters Bachelors |
| Terbitan: |
, 2014
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| Subjects: | |
| Online Access: |
http://lib.ui.ac.id/file?file=digital/2015-3/20389286-T41409-Adri Fato.pdf |
Daftar Isi:
- [<b>ASBTRAK</b><br> Penggunaan Baja SKD 11 dengan penambahan proses pengerasan permukaan adalah salah satu cara untuk meningkatkan umur pakai dan menekan biaya produksi. Perubahan dimensi yang terjadi akibat pengerasan permukaan pada baja perkakas menjadi fokus penelitian ini untuk mendapatkan siklus yang optimum.Pada benda uji baja perkakas SKD11 dilakukan proses perlakuan panas dengan temperatur austenisasi 10300C, dengan 3 variasi kecepatan pendinginan, udara, oli dan sub zero, 2 kali proses temper pada temperatur 5500C, dilanjutkan dengan melakukan nitridasi pada temperatur 5300C , 5500C ,dan 5700C. Hasil penelitian ini menunjukkan bahwa siklus perlakuan panas pada baja perkakas SKD11 dengan temperatur nitridasi 5300 ccenderung tidak terjadi perubahan dimensi. <hr> <b>ABSTRACT</b><br> One of the way to increase lifespan and reduce production costs of tool steel is to add the chain of process of surface hardening with SKD 11 steel. The aim of this study is to observe the dimensional changes that occur as a result of hardening tool steel surface to obtain the optimum of heat treatment cycle. Heat treatment process was performed on specimen SKD 11 tool steel with 10300C austenitation temperature, with 3 variation of cooling rate i.e air, oil, and subzero, with twice tempered process at 550 0C, followed by nitriding process at 530 0C, 5500C, and 570 0C. The results of this study indicate that the heat treatment cycle on SKD11 tool steel with nitriding temperature of 5300C did not make any dimensional changes., One of the way to increase lifespan and reduce production costs of tool steel is to add the chain of process of surface hardening with SKD 11 steel. The aim of this study is to observe the dimensional changes that occur as a result of hardening tool steel surface to obtain the optimum of heat treatment cycle. Heat treatment process was performed on specimen SKD 11 tool steel with 10300C austenitation temperature, with 3 variation of cooling rate i.e air, oil, and subzero, with twice tempered process at 550 0C, followed by nitriding process at 530 0C, 5500C, and 570 0C. The results of this study indicate that the heat treatment cycle on SKD11 tool steel with nitriding temperature of 5300C did not make any dimensional changes.]