Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Jurnal Elementer (Elektro dan Mesin Terapan) MACHINERY: Jurnal Teknologi Terapan
Gugun Nugraha
Unknown Affiliation
Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Analisis Sifat Mekanik Baja Karbon ST 37 Pada Variasi Kuat Arus dan Sudut Kampuh SMAW : Analisis Sifat Mekanik Baja Karbon ST 37 Pada Variasi Kuat Arus dan Sudut Kampuh SMAW -, Dibyo Setiawan; Sutrimo; Gugun Nugraha; Hanni Maksum Ardi; Toni Okviyanto
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol. 9 No. 1 (2023): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v9i1.5886

Abstract

This study discusses the impact of variations in the seam angle of welded joints and welding parameters on the tensile strength and hardness testing of ST 37 carbon steel. The SMAW welding process is one of the metal connection techniques used in industry. The method of welding joints is carried out with variations in the seam angle of the welded joints 600 and 700, while variations in the current strength of the welded joints are 90A, 100A, and 110A. The experimental method used in this research is the steel base metal material ST 37, which has a thickness of 8 mm. The tensile strength test results have the highest value at the seam angle of 700 with a current strength of 110 A, namely 482.54 N/mm2. The lowest tensile strength test results were obtained with a tensile strength of 399.54 N/mm2 at a welded angle of 700 and a current strength of 90 A. The test specimen with a variation of the existing power of 110 A and a weld seam angle of 700 has the highest value in the hardness test with a 234 HV hardness.
ANALISIS STRUKTUR MIKRO TERHADAP HASIL EKPERIMENTAL SAMBUNGAN LAS SMAW PADA BAJA KARBON ST 37 Okviyanto, Toni; Dibyo Setiawan; Gugun Nugraha; Sutrimo; Destri Muliastri
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 2 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8049215

Abstract

Welding is a process of joining two or more metals using thermal energy to melt them. The thermal processes of welded joints affect the phase change and the physical, microstructural, and mechanical properties of the weld. The purpose of the activity, to analyze the results of SMAW welded joints, parameters of current strength, and seam angle of the ST 37 carbon steel microstructure is a continuation of previous publication activities. Variation of the current strength of 90 A, 100 A, 110 A and seam angles of 600 and 700 with electrodes Ø2.6 mm and Ø3.2 mm. During the welding process, a series of thermal cycles of the weld metal and HAZ occur, from thermalization to maximum temperature and then undergoing a cooling process. The final composition of the weld metal, filler metal, and the condition of the air in the weld area are factors for the formation of the microstructure. Microstructures such as acicular ferrite can improve the mechanical properties of the weld metal. Visualization of the microstructure using an optical microscope during the metallographic inspection process was carried out by observing the grain size and phase formed on the base metal, heat-affected zone (HAZ), fusion line (FL), and weld metal (WL). The results showed that the weld metal (WM) with a series of experiments tended to have a larger acicular ferrite structure. The conclusion of the microstructural analysis is that the greater the current strength and seam angle, the more acicular ferrite structures are formed.
Co-Authors Destri Muliastri Hanni Maksum Ardi Okviyanto, Toni setiawan, Dibyo Sutrimo Toni Okviyanto