Prasetiyo, Adi (2024) ANALISA PENGELASAN SMAW PADA BAJA ST 42 DENGAN VARIASI ARUS LISTRIK DAN TIPE ELEKTRODA TERHADAP SIFAT MEKANIK. Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.
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Abstract
Dengan seiring berkembangnya waktu teknologi dibidang kontruksi, pengelasan menjadi bagian yang tidak dapat dipisahkan dari pertumbuhan dan peningkatan industri. Proses penyambungan logam dengan menggunakan listrik sebagai sumber panasnya dikenal dengan istilah las busur listrik atau las listrik. Pada penelitian kali ini penulis akan memvariasikan kuat arus litrik dan merek elektroda yang berbeda tetapi dengan ukuran yang sama. Tujuannya yaitu untuk mengetahui kekuatan sifat fisik material hasil dari pengelasan menggunakan metode SMAW dengan memvariasikan Arus listrik dan Tipe elektroda menggunakan baja ST 42. Alur pengelasan menggunakan kampuh V dengan sudut 60o sedangkan kuat arus yang di gunakan yaitu 105 A, 115A, dan merk elektroda yang berdeda dengan ukuran yaitu 3,2 mm. Teknik yang akan digunakan dalam eksplorasi ini adalah pertama-tama mengumpulkan informasi contoh, dimana informasi yang dikumpulkan atau diselidiki digunakan sebagai bantuan dalam pemeriksaan. Yang kedua adalah teknik status, dimana uji yang dipilih akan dibedah atributnya dan selanjutnya hasil pengelasan akan dicoba elastisitasnya. Dari hasil data yang didapat pada pengujian tarik dari variasi arus 105A, 115A dan variasi tipe elektroda E308-16, E6013-26 berdiameter 3,2 mm dan 2,6 mm menghasilkan nilai tegangan regangan yang signifikan. Kekuatan tarik terbesar berada pada pengelasan 105A menggunakan elektroda E6013-26 berdiameter 3,2 mm dengan nilai regangannya 6,36% dan nilai tegangannya mencapai 29,460 kg/mm2. Untuk kekuatan tarik terendah berada pada pengelasan 115A menggunakan elektroda E6013-26 berdiameter 2,6 mm dengan nilai regangannya 3,22% dan nilai tegangannya mencapai 21,574 kg/mm2. Nilai kekuatan uji tarik kurang stabil dikarenakan arus pada pengelasan juga mempengaruhi dilusi atau pencampuran, semakin besar arus yang dikeluarkan maka semakin besar juga dilusi yang artinya makin banyak logam induk yang mencair akibat panas dari arus pengelasan. Oleh karena itu pengujian tarik terbesar berada pada arus 105A dengan menggunkan elektroda E6013-26 diameter 3,2mm. Kata Kunci : Pengelasan SMAW, Kuat Arus Listrik, dan Tipe Elektroda Terhadap Sifat Mekanik
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Pengelasan SMAW, Kuat Arus Listrik, dan Tipe Elektroda Terhadap Sifat Mekanik |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik > Program Studi Teknik Mesin |
| Depositing User: | 1421900141 Adi Prasetiyo |
| Date Deposited: | 24 Jun 2026 09:01 |
| Last Modified: | 24 Jun 2026 09:01 |
| URI: | http://repository.untag-sby.ac.id/id/eprint/32451 |
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