Dzakwan, Shafwan (2019) Pengaruh Variasi Arus Terhadap Kekuatan Tarik, Kekerasan, dan Mikro Etsa pada Baja Karbon Rendah A 36 Menggunakan Elektroda E6013 Metode Las SMAW. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Perkembangan ilmu pengetahuan dan teknologi terus berkembang yang terbukti banyaknya teknologi yang jauh lebih maju dari masa sebelumnya tidak terkecuali dalam bidang pengelasan. Teknologi pengelasan memberikan pengaruh besar dalam menghasilkan produk berkualitas.
Penelitian ini menggunakan baja A 36 dengan pengelasan menggunakan arus yang berbeda yang bertujuan untuk mengetahui perbedaan hasil sifat mekanik pengelasan. Selanjutnya untuk mengetahui sifat mekanik material tersebut dilakukan beberapa pengujian, yaitu pengujian tarik, kekerasan, dan makro etsa.
Dari hasil penelitian tersebut didapatkan hasil pengujian tarik yaitu dengan arus 80 A dan 100 A putus di logam las karena mengalami cacat porositas sedangkan dengan 120 A didapatkan tegangan tarik mencapai 44.98 kgf/mm2 . Pada hasil penelitian berdasarkan hasil uji makro etsa terlihat material pada arus 120 ampere memiliki lebar HAZ yang paling besar dan pada arus 80 ampere miliki lebar HAZ yang paling kecil. Hasil pengujian kekerasan memunculkan hasil kekerasan yang berbeda dimana hasil kekerasan paling kecil dengan arus 120 A ================================================================================================
The development of science and technology are continuing to grow which is proven by the many technologies that are more advanced than in the past, including in the field of welding. Welding technology has a big influence to increase the quality of products.
This research uses A 36 welding steel with different currents to determine the different results of welding mechanical properties. Furthermore, to find out the mechanical properties of that material, several tests were carried out, such as tensile testing, hardness testing, and macro etching.
The results of the research show that tensile testing with 80 A and 100 A currents are breaking up in the welding metal due to porosity defect while with 120 A current the tensile stress reached 44.98 kgf/mm2. The results of the micro etching test show that the material with the highest amount of perlite has 120 A current and at least 100 A current. And the results of hardness testing show the different hardness where the greatest hardness is with 80 A current and the smallest hardness is with 120 A current.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSMI 671.52 Dza p-1 2019 |
| Uncontrolled Keywords: | IPTEK, SMAW, Ampere, Sifat Mekanik |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TS Manufactures > TS227 Welding. |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
| Depositing User: | Shafwan Dzakwan |
| Date Deposited: | 10 Jun 2022 03:21 |
| Last Modified: | 10 Jun 2022 03:21 |
| URI: | http://repository.its.ac.id/id/eprint/63074 |
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