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All Journal Otopro ILTEK : Jurnal Teknologi Satera: Jurnal Sains dan Teknik Terapan
Ratlalan, Roberth M.
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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DESIGN AND CONSTRUCTION OF RESISTANCE SPOT WELDING PROROTYPE FOR AUTOMOTIVE SHEET STEEL Fitrah, Muhammad Aqdar; Ekawati, Mahlina; Hermansyah, Hermansyah; Ratlalan, Roberth M.
ILTEK : Jurnal Teknologi Vol. 19 No. 02 (2024): ILTEK : Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Islam Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47398/iltek.v19i02.173

Abstract

Resistance spot welding (RSW) menjadi salah satu pilar utama dalam manufaktur otomotif, khususnya dalam perakitan badan kendaraan. Studi ini menyelidiki kinerja dan efisiensi dari sistem prototipe resistance spot welding yang baru dirancang untuk perakitan badan kendaraan. Metodologi penelitian melibatkan pengujian dan evaluasi yang ketat untuk mengukur efektivitas sistem dalam hal kualitas las, dan kekuatan. Berbagai parameter seperti arus pengelasan, waktu, dan gaya elektroda secara sistematis diperiksa untuk mengoptimalkan proses pengelasan. Selain itu, analisis komparatif dilakukan antara sistem RSW prototipe dan metode pengelasan konvensional untuk menilai superioritasnya dalam hal kinerja dan efektivitas biaya. Temuan ini memberikan wawasan berharga tentang kelayakan dan potensi keuntungan mengadopsi teknologi RSW prototipe dalam manufaktur otomotif, membuka jalan bagi peningkatan produktivitas dan kualitas dalam proses perakitan badan kendaraan.
The Effect of Variation of Drilling Machine Rotation Type KB 20 S On ST-40 Material Ratlalan, Roberth M.
Jurnal Sains dan Teknik Terapan Vol. 3 No. 1 (2025): Jurnal Sains dan Teknik Terapan
Publisher : Unit Penelitian dan Pengabdian Kepada Masyarakat, AK-Manufaktur Bantaeng

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Drilling is a process of making holes by pressing a rotating chisel on the workpiece. The machining process occurs interaction between the drill bit and the workpiece where the workpiece is cut while the drill bit experiences friction. RPM variations are needed to adjust the drilling to the material being drilled, the size of the drill bit, and the purpose of drilling. testing variations in engine speed against drilling time, using an ST 40 iron workpiece measuring 40x150x8 mm, with the same load weighing 1.9 kg, using a 12 mm diameter drill bit. drilling results the faster the engine speed (rpm) will produce a faster drilling process time, but the resulting threaded hole is not good because the engine speed does not match the drill bit. While the drilling results the slower the engine speed (rpm) will produce a slow drilling process time, but the resulting threaded hole is good because the engine speed matches the drill bit used.
PENGARUH PUTARAN SPINDLE SPEED TERHADAP KEAUSAN PAHAT CARBIDE PADA PROSES PEMBUBUTAN BAJA ST37 Ratlalan, Roberth M.; Valentine, Odilia
Otopro Vol 19 No 2 Mei 2024
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v19n2.p60-64

Abstract

The machining process has an important interaction between the tool and the workpiece, in which case the workpiece experiences intersection and the tool experiences friction. This friction occurs when the chisel touches the flowing surface and touches the area where the surface of the workpiece has crossed. As a result of friction, the tool wears out. Wear and tear that occurs is caused by expansion or enlargement to a specified limit, resulting in it not being used or having no function because damage has occurred. The research variables used three chisel bits and three specimens which were used to test their wear at 450 rpm, 1200 rpm and 2200 rpm rotation using a portable LCD digital microscope. Following are the results of the chisel bit research showing the wear of carbide bits using 3 specimens, so the wear value for the first tool was 3.09 µm, the second tool was 2.26 µm, and the third tool was 11.36 µm.
Co-Authors Aqdar Fitrah, Muhammad Ekawati, Mahlina Hermansyah Hermansyah Valentine, Odilia