Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Jurnal Energi Dan Manufaktur Jurnal Ilmiah Teknik Mesin Poros
Sobron Lubis
Unknown Affiliation
Energy Industrial & Manufacturing Engineering Mechanical Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Analisa pertumbuhan keausan pahat karbida coated dan uncoated pada alloy steel AISI 4340 Sobron Lubis; Steven Darmawan; Rosehan Rosehan; Tommi Tanuwijaya
Jurnal Energi Dan Manufaktur Vol 9 No 2 (2016): Oktober 2016
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2300.081 KB)

Abstract

Abstrak:Keausan pahat merupakan data yang sangat penting dalam perencanaan pemesinan. Penelitian ini menjelaskan tentangpercobaan pertumbuhan keausan pahat pada karbida coated dan uncoated dalam pembubutan bahan alloy steel AISI 4340.Penelitian dilakukan dengan memperhatikan pertumbuhan keausan pada menit 12, 24, 36, 48, 60 sampai didapat VB sebesar0.3 mm untuk kedua mata pahat, sedangkan kondisi pemotongan lain seperti gerak makan, kedalaman potong, kecepatanpotong konstan. Tujuan penelitian ini adalah untuk mengkaji secara ilmiah pertumbuhan keausan yang terjadi pada mata pahatkarbida coated dan uncoated pada proses pemotongan alloy steel AISI 4340. Metode grafik digunakan untuk analisispercobaan, untuk melihat perbandingan pertumbuhan keausan mata pahat karbida coated dan uncoated serta mekanismekeausan yang terjadi, serta korelasi pertumbuhan keausan dengan kekasaran permukaan benda kerja. Hasil penelitianmendapatkan keausan pahat karbida coated pada menit 60 dengan VB sebesar 0.366 mm, sedangkan pada karbida uncoatedpada menit 36 sebesar 0.45 mm. Mekanisme keausan yang terjadi adalah keausan adhesi.Kata Kunci: Pahat potong karbida, baja paduan, keausan pahat, keausan tepi.Abstract:A tool life is an important data in planning a machining process. In this research, an experiment describe about growth of toolwear on carbide coated and uncoated cutting tools used in turning process of an alloy steel of AISI 4340. The experiment wasconducted by observing the growth of tool wear on minutes 12, 24, 36, 48, 60 until get VB 0.3 mm for both of cutting tools, whilethe other cutting conditions such a feed rate, depth of cut, cutting speed constant. The purpose of this experiment is to examinescientifically the growth of tool wear on carbide coated and uncoated in turning process of and alloy steel of AISI 4340. Graphicalmethod used for analisis of the experiment, to compare the growth of tool wear on cutting tool carbide coated and uncoated, andthe mechanisms that happened, and correlation between tool wear with workpiece surface roughness. The result of theexperiment is tool wear for carbide coated on 60 minutes with VB 0.366 mm, and carbide uncoated on 36 minutes with VB 0.45mm. The mechanism of tool wear that happened is adhesion wear.Keyword : Carbide cutting tool, alloy steel, tool wear, flank wear
Kajian Eksperimental Kekasaran Permukaan Polymer Ertalone 6SA Pada Proses Milling Sobron Lubis; Rosehan Rosehan; Kevin Nataniel
Jurnal Energi Dan Manufaktur Vol 7 No 2 (2014): Oktober 2014
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (113.51 KB)

Abstract

Polymer Ertalone 6SA digunakan sebagai bahan pengganti material sintered bronze untuk produk bushing, karena ia memiliki kekuatan material yang sama baiknya, serta biaya produksi yang relatif lebih rendah. Produk bushing menuntut untuk memiliki nilai kekasaran permukaan yang rendah atau halus. Guna menghasilkan kekasaran permukaan yang baik, parameter pemotongan pada proses pemesinan memberi pengaruh yang significant. Penelitian ini dilakukan untuk melakukan kajian terhadap nilai kekasaran permukaan bahan polymer Ertalone 6SA yang dilakukan proses milling dalam membentuk permukaan sesuai dengan bentuk dan dimensi yang diinginkan. Metode yang dilakukan merupakan proses milling dengan menggunakan mesin Milling CNC, adapun jenis mata pahat yang digunakan adalah end milling HSS. Eksperimen dilakukan dengan memvariasikan parameter pemotongan pada proses pemesinan dan melakukan proses pemotongan side milling, hasil pemotongan yang terjadi pada permukaan benda kerja di ukur untuk mengetahui nilai kekasaran permukaan yang diperoleh. Pengukuran nilai kekasaran permukaan benda kerja dilakukan dengan menggunakan alat ukur surfacet test Mitutoyo. Dari penelitian yang telah dilakukan diketahui bahwa nilai kekasaran permukaan material Polymer Ertalone 6SA yang paling baik diperoleh pada variasi kecepatan potong (Vc) 140 m/min, kecepatan pemakanan (Vf) 300 mm/min, dan kedalaman pemakanan (a) sebesar 0,4 mm dengan nilai kekasaran permukaan (Ra) sebesar 0,722 ?m, dalam melakukan proses pemesinan material Polymer Ertalone 6SA diperlukan coolant untuk mencegah terjadinya Build Up Edge (BUE) pada mata pahat. Kata kunci: Polymer ertalone 6SA, milling, bushing, kekasaran permukaan, surface test Polymer Ertalone 6SA used as a substitute material for the product sintered bronze bushings, because he has the power of a material that is as good, as well as production costs are relatively lower. Product bushing demanded to have a low value of surface roughness or smooth. In order to produce a good surface roughness, cutting parameters on machining process gives a significant influence. This study was conducted to review the value of the surface roughness of polymer materials Ertalone 6SA milling process is carried out in accordance with the surface to form the shape and dimensions desired. The method used is a milling process using a CNC Milling machine, as for the type of cutting tool used is HSS end milling. Experiments carried out by varying the cutting parameters on machining processes and perform side milling cutting process, the result of cutting that occurs on the surface of the workpiece is measured to determine the surface roughness values obtained. Measurement of the workpiece surface roughness values is done by using a Mitutoyo measuring tool surfacet test. From the research that has been made known that the surface roughness value Ertalone 6SA Polymer materials are best obtained on the variation of cutting speed (Vc) 140 m / min, speed feeds (Vf) of 300 mm / min, and the depth of the cemetery (a) of 0.4 mm with a surface roughness value (Ra) of 0,722 lm, the machining process Ertalone 6SA Polymer materials required to prevent coolant Build Up Edge (BUE) on the cutting tools. Keywords: Polymer ertalone 6SA, milling, bushings, surface roughness, surface test
ANALISIS STATIC STRESS BEARING PADA TURBIN ALIRAN PIPA MENGGUNAKAN SIMULASI FUSION 360 Daniel Joachim; Silvester Lam; Sobron Lubis
POROS Vol. 17 No. 2 (2021): Jurnal Ilmiah Teknik Mesin Poros
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/poros.v17i2.20038

Abstract

Sewer pipe water turbines are made with the aim of helping the development of new renewable energy in Indonesia. Pipe water turbines utilize unused liquid waste and convert it into electricity. In this turbine certainly has a shaft, where the shaft certainly requires bearings / bearings. Bearing is one of the components that play a role in keeping the engine shaft to keep rotating on its axis and other components on its path. An example of bearing use is in turbines. The purpose of this study is to determine the calculation of stress in bearings caused by static loads or forces exerted slowly on bearings on pipe water turbine shaft. The static load used is 30 N with AISI 304 bearing material. From the results of static stress analysis simulation obtained the maximum voltage bearing results in withstanding static loads on pipe flow water turbines.
Co-Authors Daniel Joachim Kevin Nataniel Rosehan Rosehan Silvester Lam Steven Darmawan Tommi Tanuwijaya