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All Journal Journal of Applied Sciences and Advanced Technology Jurnal Teknik Mesin Mechanical Xplore
Saputera, Hendra
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Efficiency Analysis of Ripple Mill Capacity 6 Ton/Hours on Maintenance Machine Siregar, Ahdiat Leksi; Zulfiah, Riyansa Devi; Rahardja, Istianto Budhi; Rantawi, Azhar Basyir; Saputera, Hendra
Journal of Applied Sciences and Advanced Technology Vol 6, No 2 (2023): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.2.75-82

Abstract

Ripple mill is a machine used to crush palm kernels at the nut kernel station. This research aims to find out how the ripple mill machine works and determine the relationship between machine maintenance carried out on the performance efficiency of the ripple mill. The working principle of a ripple mill is that palm kernels that are fed into the ripple mill will be ground and crushed between the rotor and stator with an engine speed of 1200 rpm. The components contained in the ripple mill are the rotor bar which consists of 40 bars arranged in a circle, the stator bar consists of 18 bars at the front and 18 bars at the back, the v-belt pulley used is of the type B65 and B67 according to the position of the motor, then the flange bearing is used as a position for the shaft on the rotor before connecting to the pulley. Based on the results of research that has been carried out, it was found that the feed entering the ripple mill is 5.6 tons / hour with an installed capacity of 6 tons / hour. The working hours that have been set for the ripple mill are 300 operating hours, after observations it was obtained that it was 320 operating hours with the efficiency results obtained remaining in accordance with the predetermined standards, namely 95% - 99%.
The Effect of a Crude Palm Oil–Derived Hybrid Coolant on the Corrosion Behavior of SPCC-Based Electro-Galvanized Steel Budhi Rahardja, Istianto; Basyir Rantawi, Azhar; Saputera, Hendra; Dody, Dody; Tresya Mauriraya, Kartika; Samsurizal, Samsurizal
Jurnal Teknik Mesin Mechanical Xplore Vol. 6 No. 2 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/kfp52419

Abstract

Water-based cooling systems can promote corrosion of metal components, while conventional ethylene glycol coolants pose toxicity and environmental concerns. To address these issues, a novel coolant derived from crude palm oil (CPO) was evaluated for its corrosion behavior on SPCC-based electro-galvanized steel, a material commonly used in radiator applications. The coolant formulation consisted of glycerol, propylene glycol, a CPO-based component, and distilled water, blended to achieve a homogeneous mixture, with chemical analysis confirming three principal natural constituents accounting for nearly the entire formulation. Corrosion performance was assessed by static immersion of SECC samples in the CPO-derived coolant at ambient temperature for 336 h. No measurable weight loss was detected after immersion. SEM–EDS analysis revealed a predominantly zinc-rich surface with no evidence of Fe-rich oxide formation, while XRD patterns were dominated by metallic Zn and Fe reflections at 2θ ≈ 44.6°, 65.2°, and 82.38°, with no diffraction peaks corresponding to crystalline iron corrosion products such as hematite, magnetite, or goethite. The absence of corrosion-related diffraction features and rust formation indicates that the CPO-based coolant did not induce corrosion under the investigated short-term conditions. These results suggest that the CPO-derived coolant is a promising renewable and corrosion-compatible alternative for cooling applications, although further evaluation under long-term, dynamic, and elevated-temperature conditions is required.
Co-Authors Basyir Rantawi, Azhar Budhi Rahardja, Istianto Dody, Dody Rahardja, Istianto Budhi Rantawi, Azhar Basyir Samsurizal Samsurizal Siregar, Ahdiat Leksi Tresya Mauriraya, Kartika Zulfiah, Riyansa Devi