20 results on '"Masyrukan"'
Search Results
2. Secondary Material Casting of Al-Si for Making Handle Brake in Variation of Duct
- Author
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Patna Partono, Narendra Hidayat, null Masyrukan, and Muttaqin Rahmat Pangaribawa
- Subjects
Mechanics of Materials ,Mechanical Engineering ,General Materials Science - Abstract
This study aims to determine the effect of the mold casting duct variations on shrinkage, porosity defects, density, hardness, and chemical composition of materials. The primary raw material uses melting secondary aluminium through a small-scale smelting furnace. Research study about three kinds of ducts: triangular duct, rectangular duct, and circular duct. The testing chemical composition uses an emission spectrometer. Research founds defects by comparing the dimensions of the original object with the specimen results of each duct variation. The density value calculates porosity defects. ASTM E10 standard Brinell test measures the hardness. Besides, ASTM E3 standard test quantifies the microstructure of the product. The highest average shrinkage is the triangular ducts at 3.68%. The least significant numbers of porosity were in rectangular ducts of 2.964 gr/ml. Higher the density value, the denser the material, and the more negligible the porosity. The density of the material affects the hardness material obtained from the results of the Brinell test. The hardness of the Brinell test brought that the rectangular duct with 102.5 BHN was the most enormous. In addition, the results showed that the chemical composition mainly contained mostly chemical elements (Al) 87.1% as the main chemical ingredient and (Si) 9.51%.
- Published
- 2022
3. Comparison of Microstructure, Yield Strength, Tensile Strength, and Modulus of Elasticity between Gray Cast Iron and Nodular Cast Iron
- Author
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Agung Setyo Darmawan, Agus Dwi Anggono, Agus Yulianto, Bambang Waluyo Febriantoko, null Masyrukan, and Abdul Hamid
- Subjects
Mechanics of Materials ,Mechanical Engineering ,General Materials Science - Abstract
Gray cast iron has graphite flakes which makes it relatively weak and brittle. The addition of magnesium to gray cast iron resulted in nodular cast iron which has spherical graphite. The aim of this research was to investigate the changes in the microstructure and strength due to the addition of magnesium to gray cast iron. Microstructure observations were made by metallographic testing using Scanning Electron Microscopy and Energy Dispersive Spectroscopy. Tensile testing was carried out to measure the yield strength, tensile strength, and modulus of elasticity. The addition of magnesium to gray cast iron was observed to increase the yield strength by 179%, tensile strength by 238%, and decrease the modulus of elasticity by 94%.
- Published
- 2022
4. KARAKTERISASI SIFAT FISIS DAN MEKANIS PENGELASAN ALUMINIUM SERI AA-5052 DENGAN METODE FRICTION STIR WELDING, DENGAN FEED RATE 60 MM/MENIT PADA PUTARAN 1500 RPM DAN SUDUT KEMIRINGAN TOOLS 30 YANG DILANJUTKAN ANNEALING DAN NORMALIZING
- Author
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BIbit Sugito, Pramuko Ilmu Purbo Putro, Agus Dwi Anggono, Agung Setyo Darmawan, Masyrukan Masyrukan, and Aditya Qomarudin
- Subjects
General Engineering - Published
- 2022
5. Effect of N2 and CH4 gas flow rates on plasma nitrocarburized commercially pure titanium surface hardness
- Author
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Agung Setyo Darmawan, Pramuko Ilmu Purboputro, Bibit Sugito, Bambang Waluyo Febriantoko, null Masyrukan, null Suprapto, and Tjipto Sujitno
- Published
- 2023
6. Friction Coefficient Effect on Stress-Strain Distribution of Ceramic Coated Aeroengine Substrate Using Finite Element Analysis
- Author
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null Masyrukan, Muniandy Nagentrau, Saifulnizan Jamian, and Abdul Latif Mohd Tobi
- Subjects
Mechanics of Materials ,Mechanical Engineering ,General Materials Science ,Condensed Matter Physics - Abstract
This study presents the investigation of friction coefficient effect on stress-strain distribution of ceramic coated aeroengine specific material substrate using explicit finite element method. Half-cylinder-on-flat contact configuration subjected to normal and tangential loading is examined. Elastic ceramic coated elastic-plastic Ti-6Al-4V and Super CMV substrates are assigned to study the influence of different friction coefficient on contact pressure, von Mises stress, tangential stress and equivalent plastic strain distribution. The outcome of present research is quite revealing that stress-strain distribution response is remarkable for sliding step which experiencing significant traction compared to normal loading step. Higher possibilities of coated substrate equivalent plastic strain (plastic deformation) are registered under higher friction coefficient cases due to substantial resistance to overcome relative to tangential motion of contacting bodies.
- Published
- 2022
7. Influence of Artificial Aging in Aluminum Silicon Alloy
- Author
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Masyrukan and Agung Setyo Darmawan
- Subjects
010302 applied physics ,Materials science ,Mechanical Engineering ,Metallurgy ,chemistry.chemical_element ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Artificial aging ,Silicon alloy ,chemistry ,Mechanics of Materials ,Aluminium ,0103 physical sciences ,General Materials Science ,0210 nano-technology - Abstract
One of the techniques to increase the hardness of aluminum alloy is by aging process. The aging process includes natural aging and artificial aging processes. This study aims to investigate the effect of artificial aging on the hardness of aluminum silicon alloys. Artificial aging is carried out at two temperature variations, namely 150 and 200 °C. Metallographic test using optical microscopy and scanning electron microscopy were performed to observe the microstructure and deposits of silicon. Investigation of the constituent elements of aluminum silicon was carried out using the Energy Dispersive X-Ray Spectroscopy technique. The mechanical properties of aluminum silicon alloys examined were hardness before aging and hardness after artificial aging at temperatures of 150 and 200 °C. Hardness testing is conducted by Rockwell B hardness testing. The hardness test results showed that the hardness before the aging process was 61.1 HRB, the hardness after artificial aging at 150 °C was 69.11 HRB and the hardness after artificial aging at 200 °C was 80.36 HRB. There was an increase in hardness after the artificial aging process was carried out.
- Published
- 2021
8. Effect of Magnesium on the Strength, Stiffness and Toughness of Nodular Cast Iron
- Author
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Agus Yulianto, Agus Dwi Anggono, Pramuko Ilmu Purboputro, Rizka Dwi Setiawan, Agung Setyo Darmawan, Wijianto, Masyrukan, and Novan Dwi Kartika
- Subjects
Toughness ,Materials science ,Magnesium ,Mechanical Engineering ,Stiffness ,chemistry.chemical_element ,02 engineering and technology ,engineering.material ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,020303 mechanical engineering & transports ,0203 mechanical engineering ,chemistry ,Mechanics of Materials ,engineering ,medicine ,General Materials Science ,Graphite ,Cast iron ,medicine.symptom ,Composite material ,0210 nano-technology - Abstract
Nodular cast iron is a type of cast iron with spheroid graphite surrounded by ferrite matrix and / or pearlite. The size of the graphite and its matrix affects the mechanical properties of the cast iron. This research was conducted to investigate the effect of Magnesium composition on strength, stiffness and toughness of nodular cast iron. Magnesium addition is performed by adding FeSiMg alloys. After that, the composition of magnesium was investigated by using spectrometry. Then tensile test was conducted to obtain the yield strength, tensile strength and modulus of elasticity. Further, impact test was performed to determine the impact energy needed to break the material. The result showed an increase of yield strength, tensile strength and stiffness and a decrease of toughness.
- Published
- 2020
9. Effect of Increasing Salinity to Corrosion Resistance of 5052 Aluminum Alloy in Artificial Seawater
- Author
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Masyrukan, Waluyo Adi Siswanto, Abdul Hamid, Pramuko Ilmu Purboputro, Agung Setyo Darmawan, and Agus Dwi Anggono
- Subjects
010302 applied physics ,Materials science ,Mechanical Engineering ,Sodium ,Alloy ,Metallurgy ,Artificial seawater ,chemistry.chemical_element ,02 engineering and technology ,engineering.material ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Corrosion ,Salinity ,chemistry ,Mechanics of Materials ,0103 physical sciences ,engineering ,5052 aluminium alloy ,General Materials Science ,0210 nano-technology - Abstract
The purpose of this research is to investigate the corrosion resistance of 5052 aluminum alloy to increasing salinity in sea water. Salt spray chamber was used to measure and compare the corrosion rate of 5052 aluminum alloy with weight reduction method. The experiment was conducted by varying the three concentrations of NaCl solution to compare the corrosion rate of the metal. The test specimens used were aluminum alloy 5052 with length of 6 cm, width of 4 cm and thickness of 0.7 cm. The tests were carried out for 48 hours, aggressive NaCl solutions with concentrations of 3.5%, 4% and 5% were used as an artificial sea water corrosion medium and the temperature in the test chamber was maintained at 35 °C. Corrosion rate for 3.5% NaCl solution, 4% NaCl solution and 5% NaCl solution were 0.197 mm/year, 0.541 mm/year and 0.558 mm/year, respectively. The higher concentration leads to greater corrosion rate.
- Published
- 2019
10. PENGARUH VARIASI TEMPERATUR AIR SEBAGAI PENDINGINAN TERHADAP KARAKTERISTIK CORAN ALUMINIUM DENGAN MEDIA CETAKAN PASIR CO2
- Author
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M Masyrukan
- Abstract
Logam akan mengalami perubahan fasa selama proses pengecoran, baik perubahan sifat fisis maupun mekanik yang disebabkan oleh proses pembekuan. Perubahan sifat ini antara lain dipengaruhi media pendingin yang digunakan pada saat proses pendinginan. Tujuan penelitian ini adalah untuk membandingkan variasi temperatur pendinginan terhadap kekerasan hasil coran aluminium karena sifat fisis dan mekanis suatu logam sangat penting dalam kontruksi permesinan. Maka dalam penelitian ini digunakan media pendinginan yang berbeda yaitu : Air dengan suhu 15°C, Air dengan suhu 27°C dan Air dengan suhu 55°C. Dari pengujian kekerasan benda uji dengan media pendinginan air suhu 15°C mempunyai nilai kekerasan yang lebih baik dibanding air dengan suhu 27°C dan 55°C. Dari hasil pengujian komposisi kimia terdapat 17 unsur, tetapi hanya 4 unsur yang paling berpengaruh pada aluminium cor yaitu Si, Fe, Cu, dan Zn yang paling dominan. Dilihat dari unsur yang ada pada material ini dapat digolongkan logam aluminium paduan seng (Al-Zn).
- Published
- 2019
11. PENANGANAN SAMPAH ORGANIK DENGAN BAK SAMPAH KOMPOSTER DI DUSUN SUSUKAN KELURAHAN SUSUKAN KECAMATAN SUSUKAN KABUPATEN SEMARANG
- Author
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Nur Aklis and Masyrukan Masyrukan
- Subjects
Waste management ,Compost ,business.industry ,engineering ,Biodegradable waste ,engineering.material ,lcsh:L7-991 ,business ,Garbage ,garbage separator, composter, compost, liquid fertilizer ,lcsh:Education (General) - Abstract
Not properly managed of garbage will impact the health, social and economic. It occurs in RT 03, RT 04 RW 1, Susukan Village, Semarang District. Most residents of both RT are still throwing garbage in any place, and others make puddles for landfills. This paper addresses the issue of handling organic waste from the initially discarded in places and wallow carelessly processed into compost and liquid fertilizer in a composter in Susukan Village , District of Semarang. The activities begins with making management team that are divided according to their respective RT, provision of trash for inorganic waste, manufacture and operation of the composter training for the management team, training provision and operation of the composter for residents. The results of activities undertaken resident of RT 03 RW 04 has a system to manage garbage, produce fertilizer so the impact on improving the quality of health and social citizens.
- Published
- 2016
12. PERBANDINGAN KUALITAS MATERIAL BEARING MERK SKF, FMB, NKK, DAN JAL TERHADAP TERHADAP SIFAT FISIS DAN MEKANIS
- Author
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Taufik Surya Nugroho, Ngafwan Ngafwan, and Masyrukan Masyrukan
- Subjects
lcsh:Mechanical engineering and machinery ,lcsh:TJ1-1570 - Abstract
Penelitian ini bertujuan untuk mengetahui kualitas bahan yang digunakan pada empat merk bearing (SKF, FMB, NKK, dan JAL) berdasarkan data-data pengujian sifat- sifat mekanik serta struktur intern (struktur mikro) pada benda uji tersebut dan dapat membandingkan ketahanan dan kekuatan keempat merk bearing tersebut berdasarkan analisis pengujian terhadap kegunaannya. Pengujian yang dilakukan meliputi pengujian kekerasan menggunakan alat Micro Vickers Hardness Tester, pengamatan struktur mikro menggunakan alat Olympus Metallurgical Microscope dan Olympus Phtomicrographics Systems, serta pengujian kekasaran permukaan menggunakan alat Surfcorder. Pengujian kekerasan maupun struktur mikro dilakukan pada bagian cincin luar bantalan (outer bearing) dan ball bearing. Sedangkan pengujian kekasaran permukaan hanya pada bagian outer bearing. Setelah dilakukan semua pengujian dapat disimpulkan bahwa berdasarkan kekuatan, kekerasan (ketahanan aus) serta kekasaran permukaan pada bagian outer bearing dan ball bearing maka merk yang memenuhi kualitas optimum adalah merk FMB karena sudah mencukupi dengan parameter kerja bantalan sehingga membuat umur pakai lebih panjang pada aspek penggunaan yang sama. Kata kunci: bearing, kekerasan, struktur mikro, kekasaran permukaan ABSTRACT This study aims to determine the quality of materials used in four bearing brands (SKF, FMB, NKK, and JAL) based on data testing of mechanical properties as well as internal structure (micro structure) on the specimens and can compare the endurance and the strength of the four brands bearings based on the test analysis of its usefulness. The tests include hardness testing using the Micro Vickers Hardness Tester tool, microstructure observation using Olympus Metallurgical Microscope and Olympus Phtomicrographics Systems, and surface roughness testing using Surfcorder tool. Hardness testing and microstructure are performed on outer bearing and ball bearing parts. While the surface roughness testing only on the outer bearing. After all tests, it can be concluded that based on strength, hardness (wear resistance) and surface roughness on outer bearing and ball bearings, the brand that meets the optimum quality is the FMB brand because it is sufficient with the bearing working parameters that make longer life on the same aspect of use. Keywords: bearing, strengthness, microstructure, surface roughness
- Published
- 2017
13. Effect of cooling in the injection molding process of acetabular cup of hip joint prosthesis
- Author
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Agung Setyo Darmawan, Bambang Waluyo Febriantoko, Pramuko Ilmu Purboputro, Masyrukan, Alfan Amri, and Abdul Hamid
- Subjects
Polypropylene ,Materials science ,Molding (process) ,Radius ,medicine.disease_cause ,chemistry.chemical_compound ,Femoral head ,medicine.anatomical_structure ,chemistry ,Mold ,medicine ,Water cooling ,Femur ,Composite material ,Shrinkage - Abstract
Hip Joint is located between the hip and the base of the upper femur. Diseases such as osteoarthritis and rheumatoid arthritis can cause total replacement of hip joints with prosthesis. Hip joint prosthesis’s components consist of acetabular cup, femoral head, and femoral stem. One of acetabular cup material is a polymer. Therefore, injection molding is one of the processes that can be used to produce it. The problem that often arises is a product defect due to shrinkage. Regarding to shrinkage, the research will investigate the effect of water cooling on the shrinkage of the product’s size in the injection molding process of making acetabular cup. The work begins with the manufacture of molds, then two injections of liquid polypropylene are carried out into the mold. The first injection is for mold without cooling and the second with cooling. The resulting shrinkage is then compared. The shrinkage measurement of the outer part of the product is taken from three directions, namely the product’s height, the product’s outer diameter in the direction of y axis, and the outer diameter of the product in the direction of z axis. For the interior of the product with a half-ball shape, shrinkage measurements are carried out by measuring the average radius. Test result shows that shrinkage in injection molding testing with cooling is lower than injection molding testing without cooling. The average shrinkage of the product’s height on the test with cooling is 1.224%, while the test without cooling is 1.591%. The average shrinkage of the outer diameter in the direction of y axis on the test with cooling is 1.857%, while the test without cooling is 2.32%. The average shrinkage of the outer diameter in z axis on the test with cooling is 1.83%, while the test without cooling is 2.369%. Measurement the average shrinkage of the product’s radius is also obtained the similar trend. The test with cooling obtains the average shrinkage of the product’s radius of 0.825%, while the test without cooling is 1.267%.
- Published
- 2019
14. Post shrinkage comparison of plastic injection products by using solid mold, laminated steel tooling mold, and soft tooling mold
- Author
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Masyrukan, Abdul Hamid, Bambang Waluyo Febriantoko, and Agung Setyo Darmawan
- Subjects
Polypropylene ,Conformal cooling channel ,Materials science ,Conformal map ,Molding (process) ,medicine.disease_cause ,law.invention ,chemistry.chemical_compound ,chemistry ,law ,Mold ,Lamination ,medicine ,Water cooling ,Composite material ,Shrinkage - Abstract
Plastic product development requires dimensional accuracy in the product. One method to improve the accuracy of dimension is by making a mold that has a uniform cooling channel following the contour of the cavity, so that the direction of product shrinkage on cooling cycle can be uneven. The existing solid-type mold has several limitations on the cooling channel system. Meanwhile, products with complicated shapes mostly require cooling channel that follows the shape of the cavity (conformal). Type of conformal cooling channels can be made by the method of manufacturing each layer laminate plate arranged with adhesive into a single unit (laminated steel tooling) and the method of using a resin molding mixed with metal powder in which there is a pipe that follows the shape of the cavity (soft tooling). The present study compares the shrinkage of plastic products made from three types of mold, namely: a solid mold with straight cooling channel, laminated steel tooling with conformal cooling channel, and soft tooling with conformal cooling channel. Analysis of shrinkage measurement products includes high direction and inside diameter and outside diameter of elongated cylindrical products. Three types of mold were made, namely mold with a straight cooling channel, laminated steel tooling mold with conformal channel, and soft tooling mold with conformal channel. Three specimens were made from each mold. Plastic material for injection was Polypropylene. The volume of cooling channels between the straight-type channel and conformal was set equal. Data were collected after the injected products were stored for 24 hours. The results show that the percentage of both shrinkage lamination conformal cooling system and soft tooling is smaller when compared to that of a straight cooling system. Moreover, the shrinkage difference of diameter dimension on the X axis and Y axis is insignificant. It proves that the lamination conformal cooling systems and soft tooling are more optimal in controlling the shrinkage dimensions of the product.
- Published
- 2019
15. ANALISIS SIFAT FISIS DAN MEKANIS ALUMINIUM (Al) PADUAN DAUR ULANG DENGAN MENGGUNAKAN CETAKAN LOGAM DAN CETAKAN PASIR
- Author
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Masyrukan Masyrukan
- Published
- 2017
16. PENELITIAN SIFAT FISIS DAN MEKANIS BAJA KARBON RENDAH AKIBAT PENGARUH PROSES PENGARBONAN DARI ARANG KAYU JATI
- Author
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Masyrukan Masyrukan
- Subjects
lcsh:Mechanical engineering and machinery ,lcsh:TJ1-1570 - Abstract
Pada penelitian ini, proses pengarbonan (carburising) yang dilakukan adalah dengan menambahkan kandungan unsur karbon (C) ke dalam permukaan baja. Sumber karbon diperoleh dari arang kayu jati yang telah ditumbuk halus. Temperatur yang digunakan selama proses pengarbonan adalah 900°C, dengan variasi waktu penahanannya 2 jam, 4 jam, dan 6 jam. Setelah itu didinginkan dengan air (quench). Pembuatan benda uji dilakukan untuk mendapatkan sampel dan supaya memudahkan dalam pelaksanaan penelitian. Pengujian yang dilakukan adalah pengujian struktur mikro, pengujian kekerasan dan pengujian impact.Pengujian kekerasan yang telah dilakukan terhadap material pengarbonan menghasilkan distribusi kekerasan dari permukaan menuju inti, untuk masing-masing waktu penahanan yang berbeda. Untuk waktu penahanan 2 jam mulai HVN 257,5 Kg/mm² sampai 205,3 Kg/mm² menuju inti ; 4 jam mulai HVN 273,1 Kg/mm² sampai 204,4 Kg/mm² menuju inti ; 6 jam mulai HVN 274,6 Kg/mm² sampai 204,4 Kg/mm² menuju inti.Hasil pengamatan foto struktur mikro melalui microscope olympus photomicrographic system dihasilkan foto struktur mikro untuk raw material dan carburising sama terdapat ferit dan perlit, untuk yang dikarburising struktur mikronya, yaitu ferit dan perlit. Semakin lama proses karburising, semakin banyak pula kandungan perlitnya yang mengakibatkan semakin tingginya tingkat kekerasan. Hasil pengujian impak menunjukkan rata-rata harga impak untuk spesimen raw material = 0,350 J/mm2, waktu penahanan 2 jam = 1,013 J/mm2 , spesimen waktu penahanan 4 jam = 0,600 J/mm2, spesimen waktu penahanan 6 jam = 1,590 J/mm2.
- Published
- 2017
17. PROSES NORMALIZING DAN TEMPERING PADA SCMnCr2 UNTUK MEMENUHI STANDAR JIS G 5111
- Author
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Agung Setyo Darmawan, Riski Ariyandi, and Masyrukan Masyrukan
- Subjects
Physics ,lcsh:Mechanical engineering and machinery ,lcsh:TJ1-1570 ,Nuclear chemistry - Abstract
Besi dengan ditambahkan unsur-unsur paduan dan perlakuan panas diharapkan dapat memberikan sifat-sifat fisik dan mekanik tertentu. Adapun tujuan penelitian adalah untuk mengetahui perubahan pada sifat-sifat fisik dan mekanik dari material sebelum dan setelah dilakukan perlakuan panas, serta agar memenuhi standar JIS G 5111. Untuk mengetahui dan menganalisis sifat dari baja SCMnCr2 maka dalam penelitian ini dilakukan berbagai pengujian diantaranya : pengujian komposisi kimia, pengujian kekuatan tarik, pengujian kekerasan Brinell dan pengujian struktur mikro. Pada uji komposisi kimia didapat kandungan unsur – unsur utama yaitu Fe 96,60 %, C 0,36 %, Si 0,7211 %, Mn 1,48 %, Cr 0,532 %,, sehingga dengan melihat prosentase dari C, Si, Mn, dan Cr baja SCMnCr2 termasuk baja cor paduan rendah. Pada pengujian tarik raw material didapatkan harga Kekuatan Tarik 539,21 N/mm2 dimana specimen setelah dinormalizing dan kemudian ditempering harga kekuatan tarik naik tetapi dengan variasi waktu tempering harga kekuatan tarik semakin lama semakin menurun yakni 685,51 N/mm2, 674,16 N/mm2, 664,21 N/mm2. Pada pengujian kekerasan raw material didapatkan harga Kekerasan Rata-rata 210,8 HBN dimana specimen setelah dinormalizing dan kemudian ditempering harga Kekerasan turun dan semakin lama variasi waktu tempering harga kekerasan semakin menurun yakni 196 HBN, 194,7 HBN, 193,5 HBN. Pada struktur mikro yaitu setelah dinormalizing dan kemudian ditempering struktur butir menjadi merata dan kecil, dan struktur mikro memiliki fasa ferit dan pearlit.
- Published
- 2017
18. Pengaruh Waktu Tahan Celup Terhadap Nilai Kilap dan Ketebalan Lapisan Tembaga Pada Proses Elektoplating Baja Karbon Tinggi
- Author
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Tri Widodo Besar Riyadi, Masyrukan Masyrukan, and Bibit Sugito
- Subjects
lcsh:Mechanical engineering and machinery ,lcsh:TJ1-1570 - Abstract
Elekroplating merupakan proses pelapisan logam dengan logam lain dalam satu larutan elektrolit dimana arus searah yang dialirkan melalui anoda dan katoda akan menimbulkan rekasi reduksi dan oksidasi sehingga bahan anoda akan tergerus dan melapisi bahan katoda. Kualitas produk elektroplating sangat dipengaruh oleh beberapa faktor antara lain jenin bahan yang digunakan dan pemilihan parameter celup terhadap kilap dan ketebalan lapisan. Penelitian ini dilakukan dengan menggunakan material plat baja karbon tinggi sebagai katoda dan tembaga sebagai anoda. Persiapan bahan katoda dilakukan mulai dari memotong bahan, meratakan dan pemolesan permukaan dengan mesin dan kertas gerinda. Proses plating dilakukan dengan voltase 7 volt, dan menggunakan variasi waktu tahan celup selama 5, 7 dan 9 detik. Benda hasil elektroplating kemudian diuji nilai kilap lapisannya dengan gloss meter dan ketebalan lapisannya dengan thickness gauge. Hasil pengujian kilap menunjukkan bahwa dengan waktu plating 5 detik diperoleh nilai kilap sebesar 134,7 GU, waktu plating 7 detik diperoleh nilai kilap 133,7 GU dan waktu plating 9 detik diperoleh nilai kilap sebesar 129,5 GU. Sedangkan pengujian ketebalan menunjukkan bahwa dengan waktu plating 5 detik diperoleh ketebalan lapisan sebesar 0202 μm, waktu plating 7 detik diperoleh ketebalan sebesar 0,270 μm dan waktu plating 9 detik diperoleh ketebalan sebesar 0,294 μm.
- Published
- 2016
19. Hardness and wear properties of laminated Cr-Ni coatings formed by electroplating
- Author
-
Masyrukan and Tri Widodo Besar Riyadi
- Subjects
Materials science ,Carbon steel ,Chrome plating ,Metallurgy ,chemistry.chemical_element ,Electrolyte ,engineering.material ,Nickel ,chemistry ,Coating ,Plating ,visual_art ,engineering ,visual_art.visual_art_medium ,Composite material ,Electroplating ,Layer (electronics) - Abstract
In this work, a laminated structure of Cr-Ni coating was prepared using electroplating on carbon steel substrates. Two baths of chrome and nickel electrolyte solutions were prepared to deposit laminated Cr and Ni layers. Chrome was firstly plated on a steel substrate in constant routes whereas nickel was subsequently electroplated on the Cr coating using varied plating times. The effect of Ni plating time on the thickness, hardness and wear specific of the Ni layer was investigated. The results show that an increase of plating times increased the thickness and hardness of the Ni layer, but reduced the wear specific. This study showed that Ni can be a potential candidate as a material replacement for chromium plating maintenance.
- Published
- 2017
20. Mechanical properties of Cr-Cu coatings produced by electroplating
- Author
-
Masyrukan, Sarjito, Tri Widodo Besar Riyadi, and Ricky Ary Riswan
- Subjects
Materials science ,Carbon steel ,Metallurgy ,chemistry.chemical_element ,engineering.material ,Copper ,Corrosion ,Chromium ,chemistry ,Coating ,Ultimate tensile strength ,engineering ,Electroplating ,Layer (electronics) - Abstract
Hard chromium coatings has long been considered as the most used electrodeposited coating in several industrial applications such as in petrochemistry, oil and gas industries. When hard coatings used in fastener components, the sliding contact during fastening operation produces high tensile stresses on the surface which can generate microcracks. For component used in high oxidation and corrosion environment, deep cracks cannot be tolerated. In this work, a laminated structure of Cr-Cu coating was prepared using electroplating on carbon steel substrates. Two baths of chrome and copper electrolyte solutions were prepared to deposit Cr as the first layer and Cu as the second layer. The effect of current voltages on the thickness, hardness and specific wear rate of the Cu layer was investigated. The results show that an increase of the current voltages increased the thickness and hardness of the Cu layer, but reduced the specific wear rate. This study showed that the use of Cu can be a potential candidate as a laminated structure Cr-Cu for chromium plating.Hard chromium coatings has long been considered as the most used electrodeposited coating in several industrial applications such as in petrochemistry, oil and gas industries. When hard coatings used in fastener components, the sliding contact during fastening operation produces high tensile stresses on the surface which can generate microcracks. For component used in high oxidation and corrosion environment, deep cracks cannot be tolerated. In this work, a laminated structure of Cr-Cu coating was prepared using electroplating on carbon steel substrates. Two baths of chrome and copper electrolyte solutions were prepared to deposit Cr as the first layer and Cu as the second layer. The effect of current voltages on the thickness, hardness and specific wear rate of the Cu layer was investigated. The results show that an increase of the current voltages increased the thickness and hardness of the Cu layer, but reduced the specific wear rate. This study showed that the use of Cu can be a potential candidate as...
- Published
- 2017
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