Articles
<![CDATA[Hardness Analysis of Weld Metal Electrode Low Hydrogen Potassium E7016 and E7018 ]]>
<![CDATA[Syukran Syukran]]>;
<![CDATA[Azwinur Azwinur]]>;
<![CDATA[Muhklis Muhklis]]>
<![CDATA[ Journal of Welding Technology Vol 4, No 2 (2022): December ]]>
Publisher : <![CDATA[Politeknik Negeri Lhokseumawe ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30811/jowt.v4i2.3492
<![CDATA[Electrodes for the Manual Metal Arc (MMA) welding process or welding electrodes are classified based on the type of coating which is informed by the last digit code of the electrode. Electrodes E7016 and E7018 are basic types of electrodes with a Low Hydrogen Potassium coating type which are widely used in welding heavy construction equipment and piping. This electrode has a minimum tensile value of 70 ksi (480 MPa) with a carbon content of 0.07% for E7018 and 0.08% for E7016. The difference in carbon content in the composition of the electrode will determine the hardness value of the resulting weld. In use in the field these two electrodes are often recommended and can even be exchanged according to the assumption that the minimum tensile value is relatively the same between the two electrodes. However, due to the difference in carbon content, it will affect the hardness of the weld (weld metal) after welding. Many studies have been carried out to determine the mechanical properties of the welded joints using these electrodes, but research on the specific mechanical properties of the welds of the two electrodes is very rarely carried out. The test method is carried out by making 2 test specimens each for currents of 80A, 100A, and 120A using E7016 and E7018 electrodes with a diameter of 3.2mm. The material used is SA.36. The hardness test was carried out using the Rockwell-C (HRC) method. The test results show that the hardness value of the basic low hydrogen potassium electrode E7018 has a higher hardness value than E7016 for the same current. At currents of 80A, 100A, and 120A, there was an increase in the hardness of the E7018 weld metal against E7016 by 2.0% each; 9.8%; and 6.7%. The highest hardness value is found at 80A of 42.3HRC for the E7018 electrode, and 41.5 HRC for the E7016 electrode. In E7016 the increase in current causes a decrease in hardness level of 8.2% from 80A to 100A; 12.3% from 100A to 120A. In E7018 the increase in current causes a 1.2% decrease in hardness from 80A to 100A; 14.7% from 100A to 120A]]>
<![CDATA[PERENCANAAN PERAWATAN POMPA HIDROLIK PADA FORKLIFT 5 TON TIPE FD 50-7 ]]>
<![CDATA[Azwinur Azwinur]]>
<![CDATA[ Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 2 No 2 (2022): Agustus 2022 ]]>
Publisher : <![CDATA[Politeknik Negeri Ketapang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (781.696 KB)
|
DOI: 10.58466/injection.v2i2.343
<![CDATA[Damage from the forklift will cause problems that will hamper other activities. This is often overlooked where the lifting equipment / forklift must get good and continuous maintenance in order to maintain the performance of the tool. This study aims to plan periodic maintenance of the forklift in order to avoid damage that can stop the operation of the forklift. The method used in this research is to collect data, make direct observations of the damage that occurs to the hydraulic pump, and conduct interviews with experienced mechanics who handle the forklift. The results of the research are in the form of maintenance planning with Preventive Maintenance and Corrective Maintenance methods, namely the implementation of daily, weekly, monthly and yearly maintenance work. In daily maintenance, inspections will be carried out, check all lubrication and perform service.]]>
<![CDATA[Pengaruh jenis elektroda pengelasan SMAW terhadap sifat mekanik material SS400 ]]>
<![CDATA[Azwinur Azwinur]]>;
<![CDATA[Muhazir Muhazir]]>
<![CDATA[ Jurnal POLIMESIN Vol 17, No 1 (2019): Februari ]]>
Publisher : <![CDATA[Politeknik Negeri Lhokseumawe ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30811/jpl.v17i1.870
<![CDATA[Elektroda yang digunakan pada pengelasan SMAW mempunyai perbedaan komposisi selaput maupun kawat Inti. kuat arus dan komposisi kimia ini dapat mempengaruhi sifat mekanik pada sambungan material hasil pengelasan yang berdampak pada kekuatan dan ketangguhan sambungan pengelasan. Setiap proses pengelasan pasti berhubungan dengan elektroda oleh karena itu pemilihan jenis elektroda sangat penting sebelum melakukan proses pengelasan. Penelitian ini bertujuan untuk mengetahui pengaruh jenis elektroda terhadap sifat mekanik material SS400 dengan menggunakan proses pengelasan SMAW. Material SS400 diberi perlakuan pengelasan dengan variasi jenis elektroda yaitu E7010-P1, E7016 dan E7018. Dari hasil penelitian maka dapat dijelaskan bahwa jenis elektroda berpengaruh terhadap sifat mekanik material dimana nilai kekuatan tarik yang paling tinggi terdapat pada jenis elektroda E7018 yaitu sebesar 46.73 kgf/mm2 selanjutnya diikuti oleh elektroda E7016 yaitu sebesar 46.57 kgf/mm2 dan terakhir dengan nilai terendah menggunakan elektroda E7010-P1 yaitu sebesar 46.49 kgf/mm2. Nilai pengujian bending pada root bend yang paling tinggi adalah pada elektroda E7016 sebesar 38.87 Kgf.mm2, selanjutnya diikuti oleh elektroda E7018 yaitu sebesar 31.50 kgf.mm2 dan terakhir dengan nilai terendah menggunakan elektroda E7010-P1 yaitu sebesar 29.88 kgf.mm2. Nilai pengujian bending pada face bend yang paling tinggi adalah pada elektroda E7010-P1 sebesar 32.78 Kgf.mm2, selanjutnya diikuti oleh elektroda E7016 yaitu sebesar 31.60 kgf.mm2 dan terakhir dengan nilai terendah menggunakan elektroda E7018 yaitu sebesar 26.09 kgf.mm2.Kata Kunci: SMAW, Elektroda, Sifat Mekanik, Material SS400 AbstractElectrodes used in SMAW welding have different coating compositions and core wire. current strength and chemical composition can affect the mechanical properties of the welded material connection which has an impact on the strength and toughness of the welding joint. Each welding process must be related to the electrode, therefore the choice of electrode type is very important before carrying out the welding process. This study aims to determine the effect of electrode types on the mechanical properties of SS400 materials using the SMAW welding process. SS400 material was given a welding treatment with various types of electrodes namely E7010-P1, E7016 and E7018. From the results of the study, it can be explained that the type of electrode affects the mechanical properties of the material where the highest tensile strength is found on the type of electrode E7018 which is equal to 46.73 kgf / mm2 followed by the E7016 electrode which is 46.57 kgf / mm2 and the lowest with the electrode E7010-P1 which is equal to 46.49 kgf / mm2. The highest bending bend test value at E7016 electrode is 38.87 Kgf.mm2, followed by E7018 electrode which is equal to 31.50 kgf.mm2 and finally with the lowest value using E7010-P1 electrode which is 29.88 kgf.mm2. The highest face bend bending test value is at E7010-P1 electrode of 32.78 Kgf.mm2, followed by E7016 electrode which is equal to 31.60 kgf.mm2 and finally with the lowest value using E7018 electrode which is equal to 26.09 kgf.mm2.Keywords: SMAW, Electrodes, Mechanical Properties, SS400 Material]]>
<![CDATA[Analisis umur pahat dan biaya produksi pada proses drilling terhadap material S 40 C ]]>
<![CDATA[Azwinur Azwinur]]>;
<![CDATA[Taufiq Taufiq]]>
<![CDATA[ Jurnal POLIMESIN Vol 15, No 1 (2017): Februari ]]>
Publisher : <![CDATA[Politeknik Negeri Lhokseumawe ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30811/jpl.v15i1.367
<![CDATA[Umur pahat sangat berpengaruh terhadap suatu produk baik dari segi kualitas pemesinan maupun biaya produksi dari produk tersebut. Faktor-faktor yang mempengaruhi umur suatu pahat bisa disebabkan oleh jenis material benda kerja, pahat, kondisi pemotongan, cairan pendingin dan jenis proses pemesinan. Kondisi pemotongan sangat mempengaruhi umur pahat dan tingkat kekasaran permukaan benda kerja. Tingkat kecepatan keausan suatu pahat akan mempengaruhi batasan umur pahat yang berdampak terhadap ongkos suatu produksi karena apabila pahat cepat mengalami keausan, pahat tersebut akan sering diganti/diasah sehingga ongkos pemakaian pahat akan semakin tinggi. Tujuan penelitian ini untuk mengetahui pengaruh umur pahat terhadap biaya produksi pada proses drilling menggunakan benda kerja baja karbon S 40 C serta tingkat kekasaran permukaan materialnya. Dari hasil analisa yang dilakukan dengan memvariasikan beban yang diberikan pada lengan ayun mesin gurdi maka dapat dinyatakan bahwa beban yang diberikan pada lengan ayun mesin gurdi sangat berpengaruh terhadap umur pahat dan biaya proses pemesinan. Semakin besar nilai beban yang diberikan pada lengan ayun maka semakin pendek umur pahat, semakin kecil waktu pemesinannya. Dan semakin kecil nilai beban maka semakin panjang umur pahat, semakin besar waktu pemesinannya. Biaya produksi yang paling ekonomis adalah pada pahat yang diberikan beban 2,5 kg sedangkan biaya produksi yang paling tinggi adalah pada pahat yang diberikan beban 2 kg. Tingkat kekasaran permukaan benda kerja yang paling besar adalah pada produk dengan menggunakan pahat 3 (beban 3 kg) sedangkan tingkat kekasaran yang paling kecil (halus) adalah pada produk dengan menggunakan pahat 1 (beban 2 kg).Kata kunci : Umur Pahat, Mesin gurdi, ongkos produksi, kekasaran permukaan, kecepatan keausan pahat]]>
<![CDATA[Pengaruh variasi arus pengelasan terhadap sifat mekanik pada proses pengelasan SMAW ]]>
<![CDATA[Azwinur Azwinur]]>;
<![CDATA[Saifuddin A. Jalil]]>;
<![CDATA[Asmaul Husna]]>
<![CDATA[ Jurnal POLIMESIN Vol 15, No 2 (2017): Agustus ]]>
Publisher : <![CDATA[Politeknik Negeri Lhokseumawe ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30811/jpl.v15i2.372
<![CDATA[Teknologi di bidang konstruksi terus berkembang terutama dalam perancangan dan desain produk. Salah satu konstruksi rancangan yang sering dijumpai adalah kostruksi baja. Dalam penerapannya konstruksi baja ini seringkali tidak dapat dihindari dari melakukan proses penyambungan logam atau yang sering disebut dengan pengelasan. Setiap proses pengelasan pasti berhubungan dengan arus pengelasan yang berfungsi untuk mendapatkan hasil sambungan yang baik atau lolos pengujian sesuai standart atau code yang dianut. Oleh karena itu pemilihan besarnya arus pengelasan sangat penting sebelum melakukan proses pengelasan. Penelitian ini bertujuan untuk mengetahui pengaruh arus pengelasan terhadap sifat mekanik dengan menggunakan proses pengelasan SMAW. Penelitian ini menggunakan material baja karbon rendah. Material diberi perlakuan pengelasan dengan variasi arus 80 A, 90 A dan 100 A. Jenis sambungannya adalah sambungan tumpul kampuh V tunggal dengan sudut 70°. Hasil penelitian menunjukkan bahwa hasil pengujian tarik pada spesimen raw material yang tidak mengalami pengelasan dan spesimen yang mengalami pengelasan bahwa nilai kekuatan tarik yang paling tinggi terdapat pada arus 100 A yaitu sebesar 44.08 kgf/mm2 selanjutnya diikuti oleh arus 80 A yaitu sebesar 43.14 kgf/mm2 selanjutnya diikuti oleh nilai kekuatan tarik dari raw material yaitu sebesar 41.88 kgf/mm2 dan yang terakhir adalah arus 90 A yang nilainya sebesar 40.07kgf/mm2 . Nilai pengujian kekerasan material pada arus 80 A, 90 A dan 100 A menunjukkan bahwa nilai kekerasan tertinggi terdapat pada daerah logam las yaitu pada kelompok spesimen arus 80 A sebesar 96.5 HRC. Kata kunci: Pengelasan, Kampuh V, kekerasan, kekuatan tarik, SMAW]]>
<![CDATA[Pengaruh media pendingin terhadap kekerasan dan ketangguhan hasil pengelasan material AISI 1050 pada proses las MAG ]]>
<![CDATA[Azwinur Azwinur]]>;
<![CDATA[Muhammad Yudi]]>;
<![CDATA[Zulkifli Zulkifli]]>
<![CDATA[ Jurnal POLIMESIN Vol 18, No 2 (2020): Agustus ]]>
Publisher : <![CDATA[Politeknik Negeri Lhokseumawe ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30811/jpl.v18i2.1924
<![CDATA[The temperature of the cooling medium is a substance that serves to determine the speed of the cooling process of the material that has been given heat treatment from the welding results. Cooling is an alternative to improve and improve the mechanical properties of post-welding materials. The selection of the temperature of the cooling medium is very important to get a good connection strength. The purpose of this study was to determine the effect of the cooling media on the hardness and toughness of AISI 1050 material using the MAG welding process. The cooling media which are varied are water, sea water, and air. The welding process used is the welding process MAG (Metal active gas) with CO2 protective gas, the material used type AISI 1050 with mechanical testing hardness and impact test. The results showed that the use of the type of cooling media affects the strength of the welding joint in terms of the value of the hardness and toughness of the material receiving the load. The highest hardness value in the HAZ 1, HAZ 2 and weld metal areas occurs in the use of sea water cooling media where in HAZ 1 is 71, 63, HAZ 2 is 73.5 and weld metal is 70, while the lowest value in the use of air conditioning media where on HAZ 1 of 65.63, HAZ 2 of 63.75 and weld metal of 58.83. The impact toughness test results found that the use of seawater cooling media has the highest toughness value of 1.83 joules / mm², then followed by air media of 1.75 joules / mm², and the lowest is the water use of 1.50 joules / mm² .]]>
<![CDATA[PERENCANAAN PERAWATAN POMPA HIDROLIK PADA FORKLIFT 5 TON TIPE FD 50-7 ]]>
<![CDATA[Wahyudi, Andi]]>;
<![CDATA[Jannifar, A]]>;
<![CDATA[Azwinur, Azwinur]]>
<![CDATA[ Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 2 No 2 (2022) ]]>
Publisher : <![CDATA[Pengelola Jurnal Politeknik Negeri Ketapang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.58466/injection.v2i2.1480
<![CDATA[Damage to the forklift will cause problems that have an impact on inhibiting other activities. So that good and continuous maintenance is needed to maintain the performance of the tool. The purpose of this study is to plan periodic maintenance on the forklift to avoid damage that can stop the operation of the forklift. The method used in this study is to collect data, make direct observations of the damage that occurs to the hydraulic pump, and conduct interviews with experienced mechanics who handle the forklift. The results of the research are maintenance planning with Preventive Maintenance and Corrective Maintenance methods, by implementing daily, weekly, monthly and yearly maintenance activities. In daily maintenance, inspections will be carried out, check all lubrication and perform service. Daily maintenance is carried out every 8 working hours, weekly is carried out every 60 working hours. Monthly maintenance is carried out every 250 working hours, while annual maintenance is carried out every 2500 working hours. The operation of the 5 tons FD 50-7 Forklift unit must be in accordance with the Manual Book. So that the service life of the unit and its components is in accordance with the life time]]>
<![CDATA[ANALISA KEKUATAN SAMBUNGAN LAS SMAW MENGGUNAKAN MATERIAL AISI 1050 DENGAN VARIASI ARUS ]]>
<![CDATA[Apriadi Sahputra]]>;
<![CDATA[Marzuki Marzuki]]>;
<![CDATA[Azwinur Azwinur]]>
<![CDATA[ Jurnal Mesin Sains Terapan Vol 5, No 2 (2021): JURNAL MESIN SAINS TERAPAN ]]>
Publisher : <![CDATA[Politeknik Negeri Lhokseumawe ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30811/jmst.v5i2.2389
<![CDATA[Penelitian ini bertujuan untuk mengetahui pengaruh kuat arus dan bentuk kampuh serta mengetahui kondisi optimal pengaruh kuat arus dan bentuk kampuh pada pengelasan SMAW terhadap kekuatan tarik sambungan butt joint pada plat baja IASI 1050. Penelitian ini menggunakan Baja AISI 1050. Dengan kuat arus 100 A, 120 A, dan 150 A menggunakan kampuh V dengan menggunakan las SMAW dan memakai elektroda E7016 diameter 3,2 mm. Spesimen dilakukan pengujian tarik. Pengaruh kuat arus terhadap nilai tarik pada kampuh V, untuk kuat arus 100 A didapatkan nilai tarik rata-rata sebesar 70,94 kgf/mm2 . Untuk kuat arus 120 A di dapatkan nilai impak rata-rata sebesar 76,15 kgf/mm2. Untuk kuat arus 150 A di dapatkan nilai impak ratarata sebesar 83,29 kgf/mm2 . Kekuatan tarik sambungan las kampuh V yang paling optimal adalah arus 100 A. Hal ini dikarenakan struktur mikro ferit lebih rapat (halus), sehingga menahan rambatan retak yang terjadi. Pada bentuk kampuh V didapatkan Semakin tinggi kuat arus yang digunakan, maka kekuatan tarik-nya akan semakin rendah hingga mencapai titik maksimum lalu kembali mengalami penurunan, maka kekuatan tarik-nya akan semakin rendah. Kata Kunci : Pengelasan, Kuat Arus, Baja AISI 1050.]]>
<![CDATA[Analysis of mechanical properties on API 5CT pipe casing welded using GTAW- SMAW process ]]>
<![CDATA[Syukran, Syukran]]>;
<![CDATA[Azwinur, Azwinur]]>;
<![CDATA[Fachrurrazi, Fachrurrazi]]>
<![CDATA[ Journal of Welding Technology Vol 6, No 2 (2024): December ]]>
Publisher : <![CDATA[Politeknik Negeri Lhokseumawe ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30811/jowt.v6i2.5961
<![CDATA[The drilling process commonly employs API 5CT pipes, one type of which is API 5CT Casing Pipe Grade L80 Type-1. Long casing pipes are generally connected using the Threaded and Coupled (male-female) method. In certain conditions, welding is used for joining, and the combination welding process GTAW-SMAW is commonly employed in the field. The electrodes used are generally ER-70S-G (GTAW) and E7010-P1 (SMAW). The E7010-P1 electrode is difficult to obtain in the field. It is not only expensive but also scarce. Therefore, in some cases, construction contractors often substitute the E7010-P1 electrode with E7016, which is more readily available. This substitution is based on the consideration that both electrodes have similar tensile strength values (70ksi). This study aims to determine the mechanical properties of the joint process of API 5CT Casing Pipe Grade L80 Type-1 using E7016 electrodes and to evaluate the feasibility of substituting it for the E7010-P1 electrode. NDT testing was performed using a penetrant test, while DT testing was carried out using Vickers Hardness testing. The hardness test results showed that the highest average hardness value was found in the material using the E7016 electrode, which was 304 HVN, specifically in the weld metal area. Based on these results, E7016 can be recommended as a substitute for the E7010-P1 electrode.]]>
<![CDATA[The effect of welding current on the mechanical properties of aluminium to copper material using Tungsten Innert Gas welding technology ]]>
<![CDATA[Azwinur, Azwinur]]>;
<![CDATA[Saifuddin, Saifuddin]]>;
<![CDATA[Saputra, Rudi Mardian]]>
<![CDATA[ Journal of Welding Technology Vol 6, No 2 (2024): December ]]>
Publisher : <![CDATA[Politeknik Negeri Lhokseumawe ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.30811/jowt.v6i2.6059
<![CDATA[Welding copper and aluminium is a major challenge due to the differences in physical and metallurgical properties of the two materials. Copper has a much higher melting point than aluminium, making it difficult to achieve uniform fusion without overheating. In addition, copper's very high thermal conductivity causes rapid heat transfer, making it difficult to maintain optimal temperatures during welding. The purpose of this study was to determine the effect of TIG welding current on the shear test value and hardness of aluminium-copper material. The stages of the research method began with welding variations in welding current and filler rod types. Furthermore, shear and hardness tests were carried out. Based on the results of the hardness test, the hardness value of the welded material was higher than the parent material. The hardness value of the weld metal was higher at a current of 130A compared to currents of 120A and 140A. While the optimal welding current for copper and aluminium joints in shear test testing using BCuP-2 filler rods is 130 A, where the highest shear strength is achieved]]>
