Pradana, Mada Yoga and Tallo, Edwin Juanito (2024) Analisa Pengaruh Diameter Elektroda dan Arus Pengelasan MIG terhadap Kekuatan Tarik dan Bending pada Sambungan Baja ST 37. Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.
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Abstract
Pertumbuhan pembangunan konstruksi logam pada masa sekarang ini banyak melibatkan unsur pengelasan. Pengelasan tipe GMAW atau dikenal juga dengan sebutan MIG (Metal Inert Gas) adalah metode pengelasan dimana gas dihembuskan ke area pengelasan untuk melindungi busur dan logam cair dari atmosfer. Penelitian ini bertujuan untuk mengetahui kekuatan tarik dan tegangan bending pada pengelasan ST 37 dengan metode pengelasan MIG dengan variasi diameter elektroda adalah 0,8 mm, 1 mm, dan 1,2 mm, serta variasi besar arus adalah 70 A, 80 A, dan 90 A. Penelitian ini diawali dengan menyiapkan baja st 37. Selanjutnya material dilakukan proses pengelasan MIG menggunakan variasi diameter elektroda tungsten dan arus. Untuk pengujian pertama dilakukan pengujian tarik, lalu dilakukanpembentukan spesimen yang mengacu pada astm-e8 dan dilakutkan pengujian kedua yaitu pengujian bending. Dari hasil pengujian tarik pada elektroda 1,2 mm dengan arus 90 A memiliki tegangan tertinggi yaitu 43,66 kg/mm2, sedangkan pada elektroda 0,8 mm dengan arus 70 A memiliki tegangan terendah yaitu 30,06 kg/mm2. Pemakaian variasi diameter elektroda dan besar arus pada pengelasan MIG dapat mempengaruhi kekuatan tarik pada material baja ST 37. Apabila arus yang digunakan rendah pada setiap diameter elektroda maka kekuatan tariknya rendah, sebaliknya jika arus yang digunakan tinggi pada setiap diameter elektroda maka nilai kekuatan tariknya tinggi. Dari hasil uji bending pada elektroda 1,2 mm dengan arus 90 A memiliki hasil tertinggi sebesar 855,29 Mpa, sedangkan elektroda 0,8 mm dengan arus 70 A memiliki hasil terendah sebesar 745,55 Mpa. Pemakaian variasi diameter elektroda dan besar arus pada pengelasan MIG dapat mempengaruhi kekuatan tekuk pada material baja ST 37. Apabila arus yang digunakan rendah pada setiap diameter elektroda maka kekuatan tekuknya rendah, sebaliknya jika arus yang digunakan tinggi pada setiap diameter elektroda maka nilai kekuatan tekuknya tinggi.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Metal Inert Gas, Electrodes, Current, Tensile Strength, Bending Stress |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik > Program Studi Teknik Mesin |
| Depositing User: | 1421800117 Mada Yoga Pradana |
| Date Deposited: | 17 Jun 2026 10:28 |
| Last Modified: | 17 Jun 2026 10:28 |
| URI: | http://repository.untag-sby.ac.id/id/eprint/34012 |
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