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PROSES PRODUKSI BODY UPPER GENERATING DRUM TYPE CAP.120 T/H Fiveriati, Anggra; Ningsih, Tri Hartutuk; Ghoni, Abdul
Otopro Vol 14, No 2 (2019)
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v14n2.p40-46

Jurnal ini menjelaskan proses produksi body upper generating drum type CAP.120 T/H. Komponen upper generating drum adalah salah satu komponen pada boiler pipa air yang berfungsi sebagai reservoir campuran air dan uap air, dan juga berfungsi untuk memisahkan uap air dengan air pada proses pembentukan uap superheater. Namun tidak semua boiler pipa air (water tube) yang menggunakan upper generating drum ini. Boiler supercritical beroperasi pada tekanan sangat tinggi di atas tekanan kritis, sehingga tidak dimungkinkan terbentuk gelembung-gelembung uap air, karena itulah boiler supercritical tidak memerlukan upper generating drum untuk memisahkan air dengan uap air. Air feed water yang disupply oleh boiler feed water pump, masuk ke boiler menuju economiser dan selanjutnya masuk ke upper generating drum. Dari upper generating drum, air dipompa oleh pompa sirkulasi boiler menuju ke raiser tube/wall tube untuk dapat mencapai fase uap saturasi. Dari raiser tube air kembali masuk ke upper generating drum. Proses Proses produksi body upper generating drum di PT. Bromo Steel (PT. BOSTO) Indonesia melewati beberapa tahapan yaitu: persiapan material, persiapan marking cutting, proses marking cutting, proses rolling, proses welding, dan terakhir yaitu proses control product (QC) untuk menjamin kualitas pengerjaan.

PROSES PRODUKSI SUPERHEATER TUBE YOSHIMIN BOILER H-3500 TIPE CAP120 T/H Ningsih, Tri Hartutuk; Fiveriati, Anggra
Otopro Vol 14, No 1 (2018)
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v14n1.p35-39

Jurnal ini menjelaskan proses produksi superheater tube yoshimin boiler H-3500 tipe CAP.120 T/H. Superheater tube merupakan sebuah komponen boiler subcritical yang berfungsi untuk memanaskan kembali uap saturated, pada tekanan kerja konstan, sehingga menjadi uap superheated. Teknologi superheater sudah digunakan sejak awal penggunaan mesin uap di sekitar awal abad 20. Tujuan utamanya adalah untuk meningkatkan energi panas yang terkandung di dalam uap, sehingga efisiensi termal mesin ikut meningkat. Hingga saat ini penggunaan superheater masih sangat populer, terutama pada boiler-boiler pipa-air besar pembangkit listrik tenaga uap. Proses produksi superheater tube yoshimin boiler H-3500 tipe CAP.120 T/H di PT. Bromo Steel (PT. BOSTO) Indonesia melewati beberapa tahapan yaitu persiapan material, pembuatan mal, marking cutting, proses bending, proses fitting up, proses pengelasan, dan terakhir yaitu proses control product untuk menjamin kualitas pengerjaan.

PROSES PRODUKSI SUPERHEATER TUBE YOSHIMIN BOILER H-3500 TIPE CAP120 T/H Ningsih, Tri Hartutuk; Fiveriati, Anggra
Otopro Vol 14, No 1 (2018)
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v14n1.p35-39

Jurnal ini menjelaskan proses produksi superheater tube yoshimin boiler H-3500 tipe CAP.120 T/H. Superheater tube merupakan sebuah komponen boiler subcritical yang berfungsi untuk memanaskan kembali uap saturated, pada tekanan kerja konstan, sehingga menjadi uap superheated. Teknologi superheater sudah digunakan sejak awal penggunaan mesin uap di sekitar awal abad 20. Tujuan utamanya adalah untuk meningkatkan energi panas yang terkandung di dalam uap, sehingga efisiensi termal mesin ikut meningkat. Hingga saat ini penggunaan superheater masih sangat populer, terutama pada boiler-boiler pipa-air besar pembangkit listrik tenaga uap. Proses produksi superheater tube yoshimin boiler H-3500 tipe CAP.120 T/H di PT. Bromo Steel (PT. BOSTO) Indonesia melewati beberapa tahapan yaitu persiapan material, pembuatan mal, marking cutting, proses bending, proses fitting up, proses pengelasan, dan terakhir yaitu proses control product untuk menjamin kualitas pengerjaan.

KEKUATAN DAN MOMEN BENDING SERTA ENERGI IMPAK KOMPOSIT SERAT KULIT KERSEN AKIBAT VARIASI FRAKSI VOLUME Ningsih, Tri Hartutuk; Fiveriati, Anggra; Irfani, Fikri Wahyu
Jurnal Inovasi Teknologi Manufaktur, Energi dan Otomotif Vol. 1 No. 2 (2023): Jurnal Inovasi Teknologi Manufaktur, Energi, dan Otomotif
Publisher : Politeknik Negeri Banyuwangi

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

Komposit saat ini semakin banyak digunakan. terutama pada komposit yang diperkuat dengan serat alam. Penggunaan komposit yang diperkuat serat alam semakin meningkat karena kebutuhan akan bahan yang tahan lama, terjangkau, dan mudah didapat. Penelitian komposit berbahan serat dengan bahan dasar batang kayu kersen ini menggunakan matrik epoksi dengan memvariasikan volume serat batang kayu kersen sebesar 15%, 25%, 35%, dan 45% untuk menguji pengaruh kekuatan bending, momen lentur dan kekuatan impak komposit. Komposit ini terbuat dari bahan alami serat batang kersen dengan mencampur epoksi sebagai matrik.

Numerical Analysis Of Static Structure On The Floor Frame Of The Medium Bus I Gusti Ngurah Bagus, Catrawedarma; Sholeh, Mohamad; Sari, Eli Novita; Wahid, M Abdul; Fiveriati, Anggra
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 11 No. 1 (2024): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v11i1.586

In the manufacturing process, the bus frame is one of the essential parts of the vehicle that supports the overall weight of the vehicle, starting from the interior and passengers inside. In this research, we will carry out a structural strength analysis of the frame using the finite element method, which focuses on the floor frame of a medium bus which receives static loading from the bus interior, including seats with the maximum passenger capacity of a medium bus. The numerical analysis uses Solidworks 2021 for the 3D design of floor frames and structural analysis of the strength of medium bus floor frames using static structural toolbar on Ansys Workbench 2018 software by varying ASTM A514, AISI 1020, and Aluminum 2014-T4 materials. The results obtained are numerical analysis using a mesh size of 27 mm. The maximum deformation, maximum equivalent stress Von Mises, and safety factor are the same location for various ASTM A514, AISI 1020, and Aluminum 2014-T4 materials. The lowest deformation of 1.5735 mm occurred when using AISI 1020 material, and the highest deformation was 1.7209 mm when using Aluminum 2024-T4 material. The maximum equivalent stress Von Mises from the front view to section A-A is 101.23 MPa on AISI 1020 material. The safety level of the design with the material is 4.8999. AISI 1020 is the most optimal material for medium bus floor frames with the highest level of safety and lowest deformation.

Studi Eksperimental Pemisah Minyak-Air Menggunakan Hidrosiklon-Bubble Generator berdasarkan Variasi Diameter Underflow Rimbita, Trismi; Catrawedarma, IGNB.; Novita Sari, Eli; Wahid, M. Abdul; Fiveriati, Anggra
Jurnal Rekayasa Mesin Vol. 24 No. 2 (2024): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v24i2.555

Oil and water are two liquids that are often usedby both the public and industrial companies. Mixing oil and water need to be separated in various industries such as waste processimg, oil and gas production, and other industrial processes. Hydrocyclone is a separation method with the principle of sparation based on specific gravity which utilizes centrifugal fore by adding a bubble generator to the input section and adding variations in the underflow diameter. This research aims to analyze the performance of a hydrocyclone bubble generator based on underflow variations as oil-water separation. This bubble generator is used to make it easier to suck in air. The variations in underflow diameter used are 10mm, 15mm and 20mm. This research was carried out inject a mixture of oil and water into a hydrocyclone system as a sparation medium. The air flow injeted into the bubble generator uses air flow variations of 0.1, 0.6 and 1.2 lpm (liters/minute). From the research that has been carried out, the results show that the larger the underflow opening, the greater the pressure in the underflow, so that the underflow pressure drop is greater. The smaller the underflow opening, the greater the overflow pressure, so the overflow pressure drop is greater. The greater the input air flow, the greater the difference in underflow and overflow pressure drop. The smaller the valve opening, the lower the efficiency of oil separation in overflow and the greater the efficiency in underflow. The highest efficiency results on overflow are 88.6%.

STUDI EKSPERIMENTAL PEMISAHAN MINYAK-AIR MENGGUNAKAN HIDROSIKLON-BUBBLE GENERATOR Catrawedarma; Sari, Eli Novita; Fiveriati, Anggra; Wahid, Muhammad Abdul; Pamuji, Dian Ridlo; Syaifuddin, Muhammad
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.v11i2.285

This research aims to analyze the performance of oil-water separation using a hydrocyclone-bubble generator. The bubble generator used was an ejector type to make it easier to suck in atmospheric air. The research was carried out by injecting an oil-water mixture through a bubble generator before entering the hydrocyclone system. The air flow injected into the bubble generator was varied from 0.1-1.5 lpm. From experimental studies, it was found that as the air flow increased, the split ratio also increased. The pressure drop at the overflow increases gently while the underflow pressure drop increases significantly along with increasing input air flow. The greater the input air flow, the more significant the difference in underflow and overflow pressure drop. It has implications for a larger pressure drop ratio. The greater the air flow, the greater the overflow efficiency decreases, and the underflow efficiency increases. The highest efficiency in overflow is 87.77%.

PENGARUH PENGGUNAAN PASIR SILIKA DAN PASIR PANTAI TERHADAP KEKUATAN TARIK PADA PENGECORAN LOGAM ALUMINIUM Utomo, Wahyu; Sari, Eli Novita; Fiveriati, Anggra; Wahid, Muhammad Abdul; Pamuji, Dian Ridlo
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

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Casting is the process of manufacturing molten metal with a mold to produce a shape close to the original shape. The commonly used molding sand is mountain sand, river sand and silica sand. This research aims to analyze defects and tensile test results of castings with various types of sand (beach sand and silica sand) and types of aluminum (ADC 12 aluminum and aluminum from waste cans). The casting method used is traditional sand blasting. The results show defects in the form of surface hardness, rat tails, shrinkage cavities, and pinholes. The tensile test showed that the highest Ultimate Tensile Strength (UTS) value was obtained from a mixture of Al ADC 12 with beach sand with an average UTS value of 172.44 MPa.

THE EFFECT OF SHIELDING GAS ON SURFACE DEFECTS AND MECHANICAL PROPERTIES OF MATERIALS AFTER THE GMAW WELDING Catrawedarma, IGNB; Rosi, Azriel Alfito Dela; Wahid, M. Abdul; Pamuji, Dian Ridlo; Sari, Eli Novita; Fiveriati, Anggra
Otopro Vol 20 No 1 Nov 2024
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v20n1.p17-23

This research aims to analyze the strength and results of welded joints by testing non-destructive and destructive tests using CO2 and argon shielding gases. The type of welding used was gas metal arc welding with SS400 steel material. After welding, the material was tested using liquid penetrant, porosity, tensile, and bending tests. The results were that CO2 shielding gas tended to have a convex and wide shape, while the welding results from argon gas tended to have a small and flat shape. In both shielding gases, there were defects in undercuts, lack of fusion, and spatter after the liquid penetrant test. The porosity test results have circular spots and irregular lines with holes. The average tensile strength value obtained from argon shielding gas was 255.761 MPa, and CO2 shielding gas produced an average value of 219.671 MPa. The bending strength of the material with argon shielding gas obtained an average value of 729.00 MPa and CO2 gas shielding an average value of 611.99 MPa.

Analisa Penjadwalan Docking Kapal di PT. Pelayaran Hub Maritim Indonesia dengan Menggunakan Metode Predence Diagramming Method (PDM) Dan Project Evaluation And Review Technique (PERT) Gibran Nashif Arrizal, Moch.; Fiveriati, Anggra; Satria Prasetya, IGNA; Rulianto, Jangka; Muzaka, Khairul
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 6 No. 6 (2024): Ranah Research : Journal Of Multidisciplinary Research and Development (Septemb
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/rrj.v6i6.1087

PT. Pelayaran Hub Maritim Indonesia (PHMI) merupakan salah satu perusahaan pelayaran nasional dengan armada kapal yang besar. Kegiatan docking kapal di PHMI, yang saat ini menggunakan metode manual, mengalami berbagai kesulitan dalam memperkirakan waktu penyelesaian, memantau kegiatan, dan melakukan perubahan jadwal. Penelitian ini menggunakan metode Project Evaluation and Review Technique (PERT) untuk mengidentifikasi faktor keterlambatan dan Precedence Diagramming Method (PDM) untuk penjadwalan ulang, dengan tujuan meningkatkan efisiensi dan efektivitas docking kapal. Diharapkan, hasil penelitian dapat mengurangi keterlambatan dan meningkatkan produktivitas, sehingga kapal dapat beroperasi sesuai jadwal dan menghindari kerugian.

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