Analisis Sifat Mekanik Sambungan Las SMAW pada Rangka Motor Gl Max Neotech dengan Variasi Kuat Arus dan Jenis Elektroda melalui Pendinginan Cepat menggunakan Media Oli

Febriansyah, Muhammad Rizal (2025) Analisis Sifat Mekanik Sambungan Las SMAW pada Rangka Motor Gl Max Neotech dengan Variasi Kuat Arus dan Jenis Elektroda melalui Pendinginan Cepat menggunakan Media Oli. Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.

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Abstract

Kenyamanan dalam berkendara menjadi tuntutan yang sangat penting. Salah satu bagian yang terpenting dalam sepeda motor adalah rangka/chasis . rangka/chasis berfungsi untuk menghubungkan bagian motor dengan mesin. Selain itu rangka/chasis juga berfungsi sebagai peredam getaran. Dalam penelitian tentang sifat fisis dan mekanis material rangka/chasis sepeda motor, dimana material terbaik rangka/chasis adalah Baja Mild Steel (Labertus, 2007). Dalam produksi rangka/chasis, proses pengelasan sangat dibutuhkan. Untuk pengelasan baja mild steel dapat menggunakan pengelasan SMAW (Shielded Metal Arc Welding). Proses pengelasan ini tidak menutup kemungkinan akan timbul tegangan sisa dan perubahan sifat mekanik pada bagian tertentu akibat panas pengelasan yang tidak merata. Dalam penelitian tentang Analisa pengujian kekerasan dan tarik terhadap pengelasan baja Mild Steel SS400 menggunakan variasi arus listrik las SMAW (Shielded Metal Arc Welding), untuk hasil terbaik variasi arus pengelasan logam SS400 dengan arus listrik 60A, 80A,100A dan jenis kawat las NK68,RD260 dan RD460 dengan media pendingin oli. Dari pengujian yang telah kami lakukan nilai kekerasan tetinggi diperoleh pada daerah HAZ dengan ampere 80A menggunakan elektroda RD260 dengan nilai 52,7 HRC dan nilai kekerasan tertinggi pada daerah logam las diperoleh dengan ampere 80A menggunakan elektroda RD260 dengan nilai 53,2 HRC sedangkan tidak menutup kemungkinan hasil dari pengelasan menggunakan ampere 60A mendapatkan nilai kekerasan yang rendah. Dari pengujian kekerasan dapat disimpulkan bahwa semakin besar arus ampere yang digunakan maka nilai kekerasan pada daerah HAZ semakin turun. Dari hasil analisis pengujian tarik didapatkan tegangan maximum diperoleh dengan menggunakan elektroda jenis RD260 dan RD460 dengan ampere 100A menunjukan tegangan maximum sebesar 15,7kg dan regangan maximum diperoleh menggunakan elektroda jenis RD460 dengan ampere 100A. Hasil dari data pengujian tarik dapat disimpulkan bahwa semakin besar ampere yang digunakan pada proses pengelasan akan menghasilkan tegangan dan regangan semakin besar. Kata kunci : Kekerasan, ,Las SMAW,Rangka,Las SMAW,Tarik.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	kekerasan, las SMAW, Rangka, Tarik
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > Program Studi Teknik Mesin
Depositing User:	1422000117 Muhammad Rizal Febriansyah
Date Deposited:	18 Jun 2026 01:18
Last Modified:	18 Jun 2026 01:18
URI:	http://repository.untag-sby.ac.id/id/eprint/37915

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