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Prodi Teknik Mesin Fakultas Teknik Universitas Tarumanagara
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the Karakteristik Kekasaran Permukaan Cast Iron Pada Pembubutan Menggunakan Mata Pahat Keramik Alumina sobron yamin lubis
Jurnal Energi Dan Manufaktur Vol 6 No 01 (2023): April 2023
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEM.2023.v16.i01.p04

Abstract

Proses pemotongan logam merupakan hal umum digunakan dalam pembuatan part mesin. Kekasaran pemukaan menjadi indikator terhadap kualitas suatu produk yang dihasilkan, semakin rendah nilai kekasaran pemukaan yang dihasilkan, maka kondisi permukaan benda kerja menjadi lebih baik. Bahan cast iron banyak digunakan pada suatu konatruksi mesin, karena sifatnya yang keras dan kuat, untuk melakukan proses pembentukannya dilakukan menggunakan jenis mata pahat yang tangguh dan kuat, jenis mata pahat tersebut adalah keramik. Penelitian dilakukan bertujuan untuk mengetahui karakteristik kekasaran permukaan benda kerja cast iron yang dihasilkan melalui proses pembubutan dengan menggunakan bahan mata pahat keramik. Penelitian dilakukan dengan menggunakan mesin bubut CNC. Terdapat berbagi jenis material keramik berbasis alumina digunakan yaitu keramik Al2O3 A-12, Al2O3 TiC, Al2O3 ZrO2, Al2O3ZrO2 (ZTA), Benda kerja yang dibubut adalah jenis gray cast iron memiliki diameter 75mm dan panjang 150 mm. Proses pembubutan dilakukan pada kecepatan pemotongan 348 m/min dan feeding 0.2 mm/rev, dan variasi kedalaman pemotongan 0.05, 0.10, 0.2, 0.4, 0.6 dan 0.8 mm. Setiap selesai proses pembubutan untuk satu kombinasi parameter pemotongan dilakukan pengukuran kekasaran permukaan cast iron menggunakan alat surface test. Hasil penelitian diperoleh bahwa nilai kekasaran permukaan yang terendah sebesar 0.08 µm menggunakan mata pahat keramik Al2O3 (dry) pada kedalaman pemotongan 0.05 mm. Nilai kekasaran permukaan benda kerja yang tertinggi diperoleh sebesar 9.932 menggunakan mata pahat keramik Al2O3 ZrO2 (ZTA) pada kedalaman pemotongan 0.6 mm.
Analisis Waktu dan Umur Pahat Karbide Pembubutan Pembuatan Tool Holder Material Mild Steel Septian Calvin Sasiang; Sobron Lubis; Rosehan Rosehan
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.248 KB) | DOI: 10.36418/syntax-literate.v8i1.11243

Abstract

Mesin CNC Bubut merupakan mesin yang digunakan dalam industri manufaktur untuk menghasilkan komponen untuk sektor teknik dalam jumblah besar dengan cepat. Penelitian ini bertujuan untuk mengetahui waktu proses pembuatan tool holder dan juga untuk mengetahui waktu dari umur pahat. Penelitian ini menggunakan cutting speed 190 m/menit, 180 m/menit, dan 170 m/menit, feed rate 0,3 mm/putaran, depth of cut 0,7 mm. Berdasarkan dari penelitian yang dilakukan untuk waktu pembuatan tool holder adalah 7:25 dan penggunaan pahat yang diperlukan untuk pembuatan satu tool holder adalah 1 buah. Nilai Ra yang didapatkan juga sangat berpengaruh dengan umur pahat.
Analisis Dampak Perubahan Arus Pengelasan Terhadap Kekuatan Sambungan Las Pada Material Stainless Steel 316 Victor Salim; Rosehan Rosehan; Sobron Yamin Lubis
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16384

Abstract

In a situation of increasing urbanization in the capital, the demand for decent and quality housing is also increasing rapidly. This increase was in line with increasing market demand for specific construction products such as railings, doors and windows which are of good quality. The research method and data collection will start from nine pairs of 316 stainless steel plates which will be welded using SMAW welding. Welding on stainless steel plates will be carried out with varying welding currents of 60 A, 70 A and 80 A. Each of these welding currents will be carried out on three stainless steel plates. The results showed that the use of a higher variation of welding current in the welding process resulted in a higher strength of the welded joint. The elastic modulus can decrease due to several factors such as the presence of microscopic cracks, changes in crystal structure, or changes in the bonds between atoms or molecules of the material. The strength of welded joints in stainless steel 316 material can also be affected by other factors besides variations in welding current. Parameters such as mains voltage, welding time and type of electrode also contribute to the strength of the welded joint.
Analisis Peningkatan Kinerja dan Umur Pahat Karbida Pada Proses Pembubutan Baja Aisi 1045 dengan Menggunakan Coating Tialn Michael Laurenzo; Sobron Yamin Lubis; Rosehan Rosehan
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16385

Abstract

Lathe is a machine tool that is used to cut the object being rotated. Lathe itself is a workpiece cutting process in which the incision is made by rotating the workpiece and then being applied to the tool which is moved translationally with the rotary axis of the workpiece. In this study the method used was an experimental research method consisting of TiAlN coating to turning process. The results showed that the cutting speed is inversely proportional to the life of the tool, where the higher the cutting speed, the shorter the life of the tool. The higher the cutting speed, the lower the surface roughness value. TiAlN coating has a significant effect on the surface quality of the workpiece and the life of the tool, where the TiAlN coating has a lower surface roughness value than the tool without coating at the same cutting speed.
Pengaruh Perbedaan Grade Insert Carbide terhadap Nilai Keusan Mata Pahat pada Material Baja Aisi 4140 Felix Chistianto; Rosehan Rosehan; Sobron Yamin Lubis
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16386

Abstract

In the permesian process for making various kinds of products, various types of machines are needed, one of which is using a lathe (turning machine). In this study the method used was an experimental method, which was carried out using a conventional lathe by varying the grade of the carbide bit against AISI 4140 steel material. The results showed that the bit with grade IC9250 with a coated CVD (Chemical Vapor Deposition) content had higher coating strength. strong, so that the wear that occurs is long in the 189th minute while the IC907 grade chisel with a coated TiAlN (Titanium Aluminum Nitride) content has a weak coating strength, so the wear that occurs is faster in the 182th minute. chisel is directly proportional to the cutting time, because the rpm when the machining process is used is constant. In general, the wear that occurs on the tool eye is abrasive and abrasive wear.
Analisis Kekuatan Tarik Sambungan Plat Stainless Steel 316L pada Proses Spot Welding Adjie Caesar Prakoso; Sobron Yamin Lubis; Rosehan Rosehan
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16387

Abstract

This study aims to determine the effect of variations in welding current and distance on the strength of the weld on 316L stainless steel material through a tensile test. The type of research method and data collection will begin through the welding process of eighteen pairs of stainless steel plates using spot welding. Welding will be carried out with variations in the current and distance of the welding points. After carrying out the stainless steel welding process, a tensile test will then be carried out to determine the effect of current variations and the distance of the welding points on the strength of the welded joints in stainless steel. Based on the results of the test data obtained, it shows that a voltage of 1.75 V produces an electric power of 6317.88 Watts and a voltage of 2.20 V produces an electric power of 9249.93 Watts with a constant welding time of 2 seconds. The highest tensile strength is specimen D with a spacing of 10 mm and a voltage of 2.20 V, which is 14,765 N, while the lowest tensile strength is specimen C with a spacing of 30 mm and a voltage of 1.75 V, which is 10,224 N. At a current voltage of 1.75 Volts, the welding distance is 20 mm produced is 3490.17 Mpa and a current voltage of 2.20 Volts 20 mm welding distance produced is 3682.33 Mpa the results obtained the greater the current used, the greater the resulting tensile strength. The value of the elastic modulus is inversely proportional to the current strength and welding distance. This can be shown in the results of the tensile strength test data obtained, namely specimens with a current of 1.75 volts with a welding distance of 10 mm have a greater modulus value than specimens with a current of 2.20 volts with a welding distance of 10 mm.
Analisis Pengaruh Waktu Las dan Kuat Arus Spot Welding terhadap Kekuatan Tarik pada Stainless Steel 304 Bruce Heofilus Taher; Rosehan Rosehan; Sobron Yamin Lubis
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16388

Abstract

This study aims to find out how much electric current is right so that spot welding becomes more efficient and to find out which is the best way so that the welding results have good results. The type of research used in this study used a type of literature study. Preparation of tools and specimens with AWS D8.9. Based on the results of the test data obtained, it shows that the greater the welding current used, the strength of the resulting welded joint becomes stronger, in the results of the tensile strength test data obtained, namely specimens with a current of 2.28 volts have greater tensile strength results compared to 1.75 volt specimen if the time used is the same. Then the greater the welding time on the spot welding machine, the stronger the strength of the welded joints produced in the spot welding process, this can be shown in the results of the tensile strength test data obtained, namely specimens with 3 seconds of time have greater tensile strength results than with the specimen with a time of 1 second if using the same current strength. Lastly, the elastic modulus value is inversely proportional to the current and time used during welding, shown in the results of the tensile strength test data obtained, namely specimens with a current of 1.75 volts and a time of 1 second have a greater modulus value than specimens with a current of 2. 28 volts and 3 seconds time.
Studi Komparasi Pengaruh Kecepatan Potong Tinggi dan Konvensional terhadap Kekasaran Permukaan dan Waktu Proses Bubut Daniel Joachim; Rosehan Rosehan; Sobron Yamin Lubis
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16389

Abstract

The number of manufacturing industry growth in Indonesia is increasing over time. Based on the data obtained, the manufacturing industry in Indonesia recorded growth of 3.9% from July to August 2020. This study aims to analyze the effect of cutting speed on the surface roughness of S45C steel and to find out the production time for high speed cutting machining processes. This study used an experimental method, using a transverse/cylindrical turning method. Transverse turning is a lathe process when the cutting tool moves parallel or linear to the spindle axis. The test specimen will be machining starting with determining the independent parameters; feed (f) 0.2mm/rev, depth of cut (depth of cut) 0.1mm, length of cut (Lt) 100mm, then determine the dependent parameter by varying the speed of cut (Vc) starting from 125m/min to 625m/min. Based on the results of the test data obtained, it shows that (1) The higher the cutting speed, the lower the surface roughness value. This is caused by the process of plastic deformation and thixotropy phenomena. (2) The higher the cutting speed, the lower the cutting time. This is caused by the annealing phenomenon during the turning process.
Pengaruh Variasi Sudut Kampuh V Terhadap Kekuatan Sambungan Stainless Steel 316 pada Pengelasan Tungsten Inert Gas Dionisius Eduar; Rosehan Rosehan; Sobron Yamin Lubis
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16411

Abstract

This study aims to determine the effect of variations in the V seam angle with TIG welding on the strength of the welding joints in each 316 stainless steel specimen and to find out how much the strength value of the welding joints is in stainless steel 316 after a tensile test is carried out. Types of research methods and data collection will start from 316 stainless steel plate welding with TIG welding. Welding will be carried out with a variation of the V seam angle of 30o, 45o, and 60o at each 120 A welding current and 15L/min argon discharge. After welding, the stainless steel will be cut according to ASTM E8 standard sizes and followed by a tensile test to determine the effect of variations in seam angles on the strength of the welded joints. Based on the results of the test data obtained, it shows that (1) the tensile stress value is directly proportional to the strain. The greater the tensile stress value, the greater the strain value will be. (2) The results of the tensile test show that the greater the seam angle, the higher the resulting tensile stress. The highest tensile strength was the specimen with a seam angle of 60o which was 511.4 Mpa, while the lowest tensile strength was the specimen with a seam angle of 30o which was 378.2 Mpa. (3) The results of the tensile test show that the greater the seam angle V, the greater the tensile stress so that the strain is also greater. The highest strain for specimens with a seam angle of V 60o is 7.9, while the lowest strain is for specimens with a seam angle of V 30o which is 2.9. (4) The results of the calculation of tensile stress and strain obtained the highest modulus of elasticity for the V 60o seam corner specimen, namely 15358.358, while the lowest value was for the V 30o seam corner specimen, namely 12629.189.
Pengaruh Variasi Parameter Proses Pembubutan Poros untuk Menghasilkan Kondisi Pemotongan Ekonomik dan Kondisi Pemotongan Produktif Edo Sunardi; Sobron Yamin Lubis; Rosehan Rosehan
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16414

Abstract

This study aims to find out how to determine the optimal shaft turning process parameters to produce minimum production costs and maximum production quantities, then to determine the optimal shaft turning process parameter values to produce minimum production costs and maximum production quantities in this study. In this study, an experimental research method was used which began with making working drawings of the shaft up to the turning process. Based on the results of the test data obtained, it shows that , the conclusions obtained include: The greater the value of the cutting speed used, the machining time will shorten. This can be proven by an example using the same feed, namely 0.25 mm/r. The greater the value of the feed used, the machining time will be shortened. This can be proven by an example using the same cutting speed of 180 m/min. In the use of the parameter roughing cutting speed of 180 m/min and finishing cutting speed of 251 m/min. The greater the value of the cutting speed used, the lower the surface roughness value.
Co-Authors Adjie Caesar Prakoso Agasha Wiyoso Alfarezi Audy Nugraha Alfred Briantio Alif.A.H. Emilza Alifya Askolani Putri Alifya P. A Alifya Putri Askolani Ardy Pratama Bruce heofilus Taher Daniel Joachim Dionisius Eduar Edo Sunardi Ega Prasetya Hidayat Ega Prasetya Hidayat Erwin Siahaan Felix Chistianto Felix Thomas Harley Anugrah Harry Wibowo Januar Moch Izhardaz Joshua Raharjo Kelvin Fernando Kent Kurniawan Kevin Raynaldo Laksana Putra Hutagaol Michael Laurenzo Rico W Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Sautma Panjaitan Septian Calvin Sasiang Silvester Lam Silvester. L Silvi Ariyanti Silvi Ariyanti Silvi Ariyanti Silvi Ariyanti Sofyan Djamil Sofyan Djamil Steven D Steven Darmawan Steven Darmawan Victor Salim