Pengaruh Perlakuan Panas Terhadap Kekerasan Dan Mikrostruktur Pisau Dari Material Baja Bekas

Bandaso, Januard Buyung (2016) Pengaruh Perlakuan Panas Terhadap Kekerasan Dan Mikrostruktur Pisau Dari Material Baja Bekas. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.

[img]
Preview
Text
2114105055-Undergraduate_Thesis.pdf - Published Version

Download (976kB) | Preview

Abstract

Para pande besi memanfaatkan baja bekas sebagai bahan utama pembuatan pisau dapur. Baja bekas menjadi pilihan karena ketersediaan baja bekas yang melimpah dan harga yang jauh lebih murah. Proses perlakuan panas hardening yang dilakukan pande besi masih tradisional. Penelitian ini bertujuan untuk melihat pengaruh hardening terhadap kekerasan dan struktur mikro pada pisau yang dibuat dari baja bekas. Proses hardening yang dilakukan terdiri atas hardening yang dilakukan oleh pande besi dengan metode yang mereka gunakan dan hardening yang dilakukan di laboratorium. Proses hardening di laboratorium, terdiri atas proses hardening yang diikuti dengan tempering dan proses flame hardening. Pisau dipanas hingga temperatur hardening dan dilakukan penahanan temperatur, kemudian di quenching pada media pendingin air. Selanjutnya spesimen dipanaskan kembali hingga temperatur 4000 C dan ditahan selama 1 jam kemudian spesimen didinginkan pada udara terbuka. Flame hardening dilakukan pada sisi mata pisau dimana spesimen dipanaskan hingga temperatur austenisasi dan selanjutnya di dinginkan pada media pendingin air. Jarak antara permukaan spesimen dengan ujung nozel 5 cm. Hasil kekerasan pisau dari material poros roda yang mengalami proses flame hardening 22,8 HRC dan hardening 29,2 HRC. Struktur mikro terdiri atas perlit dan ferit. Kekerasan pisau dari material swing arm untuk flame hardening 36 HRC dengan struktur mikro perlit dan ferit pada hardening kekerasannya 47,2 HRC dan struktur mikro martensit dan austenit sisa. Kekerasan pisau dari material pegas daun untuk proses flame hardening 46,4 HRC dan proses hardening 63 HRC dengan struktur mikro martensit dan austenit sisa. Kekerasan pisau dari material poros mesin industri untuk flame hardening 32 HRC sedangkan proses hardening 59,6 HRC dengan struktur mikro martensit dan austenit sisa.. Kekerasan pisau dari material poros pewarna batik pada flame hardening 51,4 HRC dan pada proses hardening 62,8 HRC dengan struktur mikro terdiri dari martensit dan austenit ============================================================================================== The blacksmith used scrap steel for made of kitchen knife. They chose to use scrap steel because availability in the shop is abundant and cheaper. The process hardening heat treatment of blacksmith is still traditional. The purpose of this experiment is looking at the effect of hardening process to hardness and microstructure on knife. There are two process of hardening in this experiment. Hardening process of blacksmith and hardening in the laboratory using a furnace. In the Laboratory for hardening process the specimen is heating to hardening temperature and hold for a while, then quenching in water. After that for tempering process the specimen heated to a temperature of 400 C and hold for 1 hour and then the specimen cooling in the air. As for flame hardening, the blade is heated to hardening temperature, and after that it is cooling in water. The distance between the specimen surface with the tip of the nozzle is 5 cm. The hardness that obtained on knife specimens from the material of axle wheel of bike for flame hardening 22.8 HRC and hardening used furnace is 29,2 HRC. Microstructure of the specimen consists of pearlite and ferrite. The knife specimens from material swing arm the hardness after flame hardening is 36 HRC with a microstructure consisting of ferrite and pearlite and for process of hardening the hardness 47.2 HRC where its microstructure of martensite and residual austenite. The specimen of the leaf spring material for flame hardening the hardness is 46.4 HRC and hardening is 63 HRC with microstructure of martensitic and residual austenite. Specimen from shaft industrial machinery the hardness of flame hardening is 32 HRC and hardening is 59.6 HRC. The microstructure consists of martensite and residual austenite. The specimen of dye batik shaft material hardness of flame hardening is 51.4 HRC and 62.8 HRC on hardening. The microstructure consists of martensite and residual austenite

Item Type: Thesis (Undergraduate)
Additional Information: RSM 672.36 Ban p-1
Uncontrolled Keywords: Baja bekas, Pisau dapur, Pande besi, Hardening, Tempering, Flame Hardening
Subjects: T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment
Divisions: Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 23 Jun 2020 06:07
Last Modified: 23 Jun 2020 06:07
URI: http://repository.its.ac.id/id/eprint/76206

Actions (login required)

View Item View Item