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All Journal AUSTENIT Jurnal Rekayasa Mesin Sebatik Jurnal Elemen JURNAL CRANKSHAFT Abdimas Universal Majamecha Jurnal Inovasi Teknologi Manufaktur, Energi dan Otomotif Equiva
Manta, Faisal
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Transportation

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ANALISIS PERUBAHAN KECEPATAN SPINDLE TERHADAP KEKASARAN PERMUKAAN DAN KEAUSAN PAHAT PADA PEMBUBUTAN BAJA AISI 4340 Manta, Faisal; Artika, Kurnia Dwi; Radyantho, Kholiq Deliasgarin; Taufiq
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.210

Abstract

The cutting quality of a lathe is influenced by various cutting parameters. Spindle speed is the main parameter that influences the level of surface roughness and tool wear. The research aims to understand the impact of using a VNMG 160408-MA type insert tool in cutting AISI 4340 steel on surface roughness and tool wear values. The spindle speeds used are 190 rpm, 300 rpm, 460 rpm, 755 rpm, 1,255 rpm, feed rate 0.209 mm/rev, and cutting depth 0.5 mm. Experimental methods were used in the research. The research results showed that variations in spindle speed had a significant effect on surface roughness, tool wear and cutting temperature as evidenced by the P-Value < 0.05. At a value at a spindle speed of 190 rpm, the surface roughness value was 6.195 μm, tool wear was 0.002 grams and tool temperature was 48.178 °C. The spindle speed value of 1,255 rpm measured a surface roughness value of 1.971 μm, tool wear of 0.053 grams, and tool temperature of 90.389 °C.
ANALISIS PENGELASAN KOMBINASI GMAW DAN FCAW PADA BAJA ASTM A36 TERHADAP SIFAT MEKANI Manta, Faisal; Wiguna, Ahmad Zulfikar Patria; Pratama, Kafinra; Haliq, Ridwan
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.278

Abstract

A36 steel as raw material for heavy equipment attachments, such as blades and buckets. Gas Metal Arc Welding (GMAW) and Flux-Cored Arc Welding (FCAW) are used for the connection. High heat input and weld metal protection mechanisms are suitable for joining thick plates, however, in the field, malfunctions were found due to damage to the weld joint. To overcome this problem, research was carried out on two welding techniques to obtain optimal joint strength values. The research uses GMAW, FCAW and combination welding to join A36 steel with a V-beam angle of 60°. On the welding results, Magnetic Particle Inspection (MPI) and bending tests will be carried out. MPI testing states combination welding meets the requirements of the AWS1015 standard. The highest bending strength in FCAW welding was 160,419 MPa and the lowest in GMAW was 71,724 MPa, while combination welding was 113,312 MPa. The difference in value is influenced by the phases formed from each welding method visible in the microphotographs in the weld metal, HAZ and base metal areas.
Analisis Efektivitas Forklift 5 Ton Di PT XYZ Dengan Metode Overall Equipment Effectiveness Julian, Lindra Rahmad Rizqi; Manta, Faisal; Radyantho, Kholiq Deliasgarin; Haryono, Hadhimas Dwi; Sujana, I Made Ivan Cakra
AUSTENIT Vol. 17 No. 2 (2025): AUSTENIT: Oktober 2025
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v17i2.11056

Abstract

Forklifts play a vital role in ensuring the smooth production and distribution of materials in industrial environments. The effectiveness of forklift operation significantly influences productivity, particularly in the oil and gas sector, which demands high punctuality and efficiency. This study aims to analyze the operational effectiveness of a 5-ton forklift at PT XYZ by applying the Overall Equipment Effectiveness (OEE) method, which consists of three main components: availability, performance, and quality. In addition, the six big losses approach is used to identify the primary sources of inefficiency. The results show that the highest OEE value was recorded in June at 91.04% (availability 94.24%, performance 96.60%, and quality 100%), while the lowest was in July at 82.20%, falling below the world-class OEE benchmark of 85%. Fishbone diagram analysis indicates that idle and minor losses are the largest contributors, accounting for 61.9% of the total losses. These are mainly caused by human factors, such as low work discipline, insufficient operator skills in executing standard procedures, irregular work methods, and the absence of a real-time system for recording and reporting minor disturbances. Other supporting factors include limited direct supervision, excessive workload, and non-optimal preventive maintenance schedules. To address these issues, the study recommends improvements such as regular operator training, clearer and more structured work procedures, implementation of daily log sheets to record idle time, improvement of forklift operation routes to minimize obstacles, and routine preventive maintenance scheduling for critical components, including brakes, batteries, forks, and electrical systems.
Co-Authors Arifin, Ahmad Anas Cahyadi, Achmad Irfan Devy Setiorini Sa’adiyah Endrawati, Budiani Fitria Gad Gunawan Haliq, Ridwan Haryono, Hadhimas Dwi Hidayat, Dinda Khoirunnisa Iskandar, Muhammad Julian, Lindra Rahmad Rizqi Kholiq Deliasgarin Radyantho Kurnia Dwi Artika, Kurnia Dwi Marshantya, Defiana Matarru , Andre Amba Nazhir , Alfah Pratama, Kafinra Qolbi, Selvia Nur Rahendaputri, Chandra Suryani Rajagukguk, Grendy Ary Krishna Ramadhan, Boby Alfiandy Rijal Surya Rahmany rizianiza, illa Rusdan, Adnan Saputra, Ferry Adi Stofani, Dhio Suanggana, Doddy Sujana, I Made Ivan Cakra Sujana, I Made Ivan Wiyarta Cakra Syaharani, Destyana Putri Taufiq Wiguna, Ahmad Zulfikar Patria Yongki Christandi Batubara Yuike, Ariesta Zufadli, Muhammad Syahmi