GERALDI, NOVAL (2026) PENGARUH VARIASI ARUS PENGELASAN TERHADAP SIFAT MEKANIK PADA PROSES PENGELASAN ELEKTRODA E-7016 TERHADAP MATERIAL SS400. S1 thesis, Universitas Mercu Buana Jakarta.
|
Text (HAL COVER)
Cover.pdf Download (563kB) | Preview |
|
![[img]](https://repository.mercubuana.ac.id/style/images/fileicons/text.png) |
Text (BAB I)
bab 1.pdf Restricted to Registered users only Download (113kB) |
|
|
Text (BAB II)
bab 2.pdf Restricted to Registered users only Download (602kB) |
|
|
Text (BAB III)
bab 3.pdf Restricted to Registered users only Download (223kB) |
|
|
Text (BAB IV)
bab 4.pdf Restricted to Registered users only Download (390kB) |
|
|
Text (BAB V)
bab 5.pdf Restricted to Registered users only Download (95kB) |
|
|
Text (DAFTAR PUSTAKA)
DAFTAR PUSTAKA.pdf Restricted to Registered users only Download (169kB) |
|
|
Text (LAMPIRAN)
LAMPIRAN.pdf Restricted to Registered users only Download (414kB) |
Abstract
This study aims to analyze the effect of welding current variation on the mechanical properties and microstructure of Shielded Metal Arc Welding (SMAW) joints on SS400 low-carbon steel using E-7016 electrodes. The mechanical properties evaluated include tensile strength and Vickers hardness, while the microstructure was observed in the Base Metal (BM), Heat Affected Zone (HAZ), and Weld Metal (WM) regions. The welding current variations used in this study were 70 A, 100 A, and 120 A. The research methods consisted of tensile testing, Vickers hardness testing, and optical microstructure observation to evaluate the effect of welding current on weld joint quality. The results showed that welding current variation significantly affected the mechanical properties and microstructure of the welded joints. The 100 A welding current produced the highest average tensile strength of 513 MPa, while the 70 A and 120 A currents produced average tensile strengths of 478 MPa and 469.67 MPa, respectively. The Vickers hardness test indicated that the 120 A welding current resulted in the highest average hardness value of 214.5 HV. Microstructural observations revealed that all specimens were predominantly composed of ferrite as the primary phase and pearlite as the secondary phase in the BM, HAZ, and WM regions. Based on the experimental results, the 100 A welding current was identified as the optimum welding parameter in terms of tensile strength, whereas the 120 A welding current provided the highest hardness. The findings of this study are expected to serve as a reference for selecting appropriate SMAW welding current parameters for SS400 steel to achieve high-quality welded joints. Keywords: SMAW Welding; SS400 Steel; Welding Current Variation; Mechanical Properties; Tensile Strength; Microstructure. Penelitian ini bertujuan untuk menganalisis pengaruh variasi arus pengelasan terhadap sifat mekanik dan struktur mikro sambungan las (SMAW) Shielded Metal Arc Welding pada material baja karbon rendah SS400 menggunakan elektroda E7016. Sifat mekanik yang diuji meliputi kekuatan tarik dan kekerasan Vickers, sedangkan struktur mikro diamati pada daerah (BM) Base Metal, (HAZ) Heat Affected Zone, dan (LAS) Logam Las. Variasi arus pengelasan yang digunakan adalah 70 A, 100 A, dan 120 A. Metode penelitian meliputi pengujian tarik, pengujian kekerasan Vickers, dan pengamatan struktur mikro untuk mengevaluasi pengaruh variasi arus terhadap kualitas sambungan las. Hasil penelitian menunjukkan bahwa variasi arus pengelasan memengaruhi sifat mekanik dan struktur mikro sambungan las. Variasi arus 100 A menghasilkan kekuatan tarik rata-rata tertinggi sebesar 513 MPa, sedangkan variasi arus 70 A dan 120 A masing-masing sebesar 478 MPa dan 469,67 MPa. Hasil uji kekerasan menunjukkan bahwa variasi arus 120 A menghasilkan nilai kekerasan rata-rata tertinggi sebesar 214,5 HV. Pengamatan struktur mikro menunjukkan bahwa seluruh spesimen masih didominasi oleh fasa ferit sebagai fasa utama dan perlit sebagai fasa pendamping pada daerah BM, HAZ, dan LAS. Berdasarkan hasil penelitian dapat disimpulkan bahwa variasi arus 100 A merupakan parameter pengelasan yang paling optimal dalam menghasilkan kekuatan tarik tertinggi, sedangkan variasi arus 120 A menghasilkan nilai kekerasan tertinggi. Temuan penelitian ini diharapkan dapat menjadi referensi dalam pemilihan parameter arus pengelasan SMAW pada material SS400 guna memperoleh kualitas sambungan las yang lebih baik. Kata Kunci: Pengelasan SMAW, Baja SS400, Variasi Arus Pengelasan, Sifat Mekanik, Kekuatan Tarik, Struktur Mikro.
| Item Type: | Thesis (S1) |
|---|---|
| NIM/NIDN Creators: | 41322110046 |
| Uncontrolled Keywords: | Pengelasan SMAW, Baja SS400, Variasi Arus Pengelasan, Sifat Mekanik, Kekuatan Tarik, Struktur Mikro. |
| Subjects: | 500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 550 Earth Sciences/Ilmu tentang Bumi > 553 Economic Geology/Geologi Ekonomis > 553.2 Carbonaceous Materials/Material Karbon 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin 600 Technology/Teknologi > 670 Manufacturing/Manufaktur, Pabrik-pabrik > 671 Metalworking Process/Pabrik Logam > 671.3 Mechanical Working and Related Process/Proses Kerja Mekanik dan Proses yang Berhubungan |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 08 Sep 2026 01:05 |
| Last Modified: | 08 Sep 2026 01:05 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/103695 |
Actions (login required)
 |
View Item |
