Rahmad tulah, Faizal fahry and Maftuhul ulum, Moh hanung ANALISA PENGARUH VARIASI SUDUT BEVEL DAN VARIASI POSISI PENGELASAN PADA PENGELASAN GMAW UNTUK MATERIAL SS 400 SEBAGAI BAHAN DASAR PEMBUATAN BUCKET EXCAVATOR. Undergraduate thesis, UNSPECIFIED.
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Abstract
Sambungan pengelasan merupakan proses penyambungan antar 2 bagian material logam menggunakan energi panas. Setelah penyambungan material logam dilakukan pendinginan kemudian dilakukan pengujian mekanik dan pengujian cacat pada sambungan las. Tujuan penelitian ini adalah untuk mengetahui ketahanan kekerasan dan besaran sifat mekanik pada sambungan las Ketika diberi variasi sudut bevel dan variasi posisi pengelasan. Material benda uji yang dipakai adalah Baja SS400 dengan variasi sudut bevel 60°,70°,80° dan dengan variasi posisi pengelasan yaitu 1G, 2G, dan 3G. Metode yang dipakai adalah pengujian mekanik yaitu pengujian rockwell dan pengujian kuat tarik pada masing – masing spesimen yang telah mendapat perlakuan variasi sudut bevel dan variasi posisi pengelasan setelah penyambungan. Nilai tegangan maksimum dari pengujian tarik pada spesimen baja SS400 didapatkan nilai tegangan maksimum tertinggi ada pada variasi sudut bevel 60o dengan posisi pengelasan 3G dengan nilai tegangan maksimum sebesar 43,53 kg/mm2. Nilai regangan maksimum dari pengujian tarik pada spesimen baja SS400 didapatkan nilai regangan maksimum tertinggi ada pada variasi sudut bevel 60o dengan posisi pengelasan 2G dengan nilai regangan maksimum 9,19%. Nilai kekerasan terbesar ada pada variasi posisi pengelasan 1G sudut bevel 60o dengan nilai kekerasan sebesar 94,8 HRC. Kata kunci : Uji Tarik, Uji Rockwell, sudut Bevel, baja SS400
| Item Type: | Thesis (Undergraduate) |
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| Uncontrolled Keywords: | Uji tarik,uji rockwell,sudut bevel,baja ss400 |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Depositing User: | 1421900183 Faizal fahry rahmadtulah |
| Date Deposited: | 24 Jun 2026 11:14 |
| Last Modified: | 24 Jun 2026 11:14 |
| URI: | http://repository.untag-sby.ac.id/id/eprint/33907 |
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