Penelitian ini bertujuan untuk menganalisis pengaruh metode pengelasan SMAW, asetilin, TIG, dan MIG terhadap ketahanan korosi baja stainless steel 304 menggunakan metode uji kehilangan massa. Spesimen hasil pengelasan direndam dalam larutan NaCl 3,5% selama 672 jam untuk mensimulasikan lingkungan korosif, kemudian produk korosi dihilangkan menggunakan larutan asam nitrat (HNO₃) 15% sebelum di…
This study aims to analyze the effect of Selective Laser Melting (SLM) process parameters on the microhardness and microstructure of Ti-6Al-4V Grade 23 titanium alloy. This material is widely used in biomedical and aerospace applications due to its high strength-to-weight ratio, good corrosion resistance, and excellent biocompatibility. However, laser-based additive manufacturing processes ofte…
This study investigates the effect of Selective Laser Melting (SLM) process parameters on the mechanical properties of Ti-6Al-4V Grade 23, a material widely used in biomedical applications, particularly medical implants. The advancement of additive manufacturing technology has enabled the fabrication of personalized prostheses with complex geometries tailored to individual needs. Selective Lase…
Titanium alloys are widely used in aerospace, biomedical, and manufacturing industries due to their high strength-to-weight ratio and excellent corrosion resistance. However, welding titanium alloys remains challenging because of their high sensitivity to heat input, which significantly affects mechanical properties and microstructural characteristics. This study aims to analyze the effect of w…
This study aims to analyze the effect of variations in the thickness of SS-400 low carbon steel plates on the distortion of fillet joints using the Shielded Metal Arc Welding (SMAW) method. Welding is a widely used method of joining metals, but it often causes distortion due to uneven heat distribution during the heating and cooling processes. The plate thickness variations used in this study w…
Two types of industrial metallic materials commonly used are SS400, which is a low-carbon steel with moderate strength, and SS304, which is an austenitic stainless steel characterized by high corrosion resistance and lower thermal conductivity. This study aims to analyze the magnitude of distortion, hardness distribution, and microstructural changes in dissimilar welded joints between SS400 and…
Distortion is one of the main problems in welding processes that can lead to dimensional inaccuracies and reduced joint quality. Distortion occurs due to non-uniform heat distribution and the development of residual stresses during welding. This study aims to analyze the effect of SS400 low carbon steel plate thickness variation on distortion in T-joint welds using the Shielded Metal Arc Weldin…
Dissimilar metal welding between low carbon steel SS400 and stainless steel SS304 is widely applied in industrial applications due to its ability to combine different mechanical properties and corrosion resistance. However, differences in thermal properties, coefficients of thermal expansion, and thermal conductivity often result in high distortion and residual stress in welded joints. One comm…
Dissimilar metal welding between carbon steel and stainless steel has been widely applied in industrial applications to reduce production costs and improve equipment reliability. However, differences in physical, mechanical, and thermal properties between the materials may lead to welding-related issues, particularly distortion in fillet weld joints. This study aims to analyze welding distortio…
Pengelasan merupakan suatu cara penyambungan logam yang paling banyak digunakan dalam dunia industri. Jenis pengelasan yang paling umum dan banyak digunakan saat ini adalah pengelasan busur listrik dengan elektroda terbungkus (Shielded Metal Arc Welding) Pengaruh termal dari pengelasan yang terjadi pada logam induk mengalami perubahan sifat mekanik dan struktur mikro disebut daerah terpengaruh …
The development of technology in the field of construction cannot be separated from the metal joining process, or what is often called welding. This has an important role in engineering and repair or metal repair. When the process of joining the welded metal with steel metal becomes one unit, which means, the strength of the welded metal must be the same as the steel metal used. (Pujo M. & JS, …
To get a good quality weld connection, please note the design of weld, the way of welding, construction as well as the usefulness of the material to be welded. Medium carbon steel is use in wrench tools, ships, bridges and trains. In this research, joint method use is welding smaw use elektrode E7018 but variations of current electrical welding different, namely 90A, 120A and 150A. And performe…
Corrosion in low-carbon steel is a significant issue in the industrial world, particularly in the oil, gas, refining, and chemical industries, as it leads to substantial financial losses. The total losses experienced by companies in Indonesia are estimated to reach 2-5% of the country's GDP. Corrosion arising from insulation damage, known as Corrosion Under Insulation (CUI), is challenging to d…
In general, corrosion damages material surfaces due to the presence of chemical compounds, especially in metals undergoing electrochemical reactions. The estimated impact of this damage is approximately 1.5% of the Gross National Product. Currently, the application of insulation as a preventive measure against corrosion in the industrial sector has significantly increased. Corrosion beneath ins…
Penelitian ini menggunakan metode eksperimen yang meliputi proses pengelasan, pendinginan secara cepat, kemudian pengujian tarik. Media pendingin merupakan media yang dipakai dalam menurunkan temperatur logam setelah dilakukan proses perlakuan panas. Pendinginan yang dilakukan setelah proses pengelasan dapat mengubah struktur mikro dari logam yang dilas. Proses pendinginan dilakukan terhadap ha…
Dissimilar metal welding has the advantages of reducing production costs, reducing weight and improving welded joints. The main objective of this study was to analyze and observe the effect of electrode variations and weld joint variations on the quality of the different welds of ASTM A36 and SS 304 stainless steels. Therefore, this study aims to determine the phases formed due to fast heating …
Baja karbon rendah jenis ASTM A36 merupakan material yang banyak digunakan sebagai bahan dari kontruksi umum karena memiliki ketahanan yang tinggi namun kekerasannya rendah. Kandungan karbon rendah memungkinkan baja untuk ditingkatkan sifat mekaniknya. Salah satu usaha dalam menjaga logam tahan gesekan atau tekanan adalah dengan memberi perlakuan panas pada baja sehingga dapat meningkatkan keke…
The occupational safety and health management system is one of the most important things in a company to reduce the number of work accidents. This study aims to determine how the implementation of occupational safety and health management systems in SMEs engaged in the welding sector in Indralaya District. In addition, this research that uses a combination method with the Concurrent Triangulati…
Welding of low carbon steel plate joints must pay attention to distortion problems that occur during the welding process or after the material has cooled. In this study, an analysis was carried out to determine whether there was an effect of variations in welding current (90, 100, 110 A) and seam distance (1, 2, 3 mm) in SMAW welding on the distortion of low carbon steel ST-37. The results of d…
Penelitian ini bertujuan untuk mengetahui pengaruh variasi jenis kampuh dan media pendingin sambungan pengelasan SMAW pada baja ST 37 terhadap kekuatan uji bending. Pengelasan yang digunakan pada penelitian ini adalah las SMAW dengan sambungan butt joint. Kampuh yang digunakan adalah kampuh V dengan sudut kemiringan 700 dan kampuh ½ V dengan sudut kemiringan 350 dengan menggunakan media pendin…
Faktor yang mempengaruhi hasil dari pengelasan diantaranya adalah arus dan sudut kampuh yang digunakan. Hal ini dikarenakan semakin besar arus dan sudut kampuh yang digunakan maka akan semakin besar juga nilai dari sambungan las. Tujuan dari penelitian ini adalah untuk mengetahui nilai ketangguhan dari sambungan las SMAW memakai kampuh V menggunakan sudut 30o dan 60o serta variasi arus 80 A, 10…
This study aims to determine how much influence the type of electrode and the variation of welding current on the tensile strength of low carbon steel. The method used is an experiment with the aim of knowing the cause and effect based on the treatment given. This study uses SMAW welding with electrode types E6010 and E6013 with a diameter of 3.2mm, the current variation for welding uses a curr…
Metode yang digunakan dalam penelitian ini adalah eksperimen. Penelitian ini bertujuan untuk mengetahui pengaruh variasi posisi pengelasan dan gerakan elektroda pada pengelasan Shielded Metal Arc Welding (SMAW) terhadap kekuatan Bending Pipa St37. Terdapat empat spesimen yang digunakan dalam penelitian ini, masing-masing spesimen dilakukan variasi posisi pengelasan 1G,2G dan gerakan elektrodan …
This study aims to determine the effect of variations in electric and the type of seam on SMAW welding on the strenght of the st 37 joint bending test. The currents used are 90 A, 110 A, and 130 A using V dan X seams the bending testing is curried out. Specimen 1 with an electric current of 90 A seam V, Specimen 2 with an electric current of 110 A seam V, Specimen 3 with an electric current of …
Perkembangan dunia industri terutama di bidang pengelasan memiliki permasalahan tersendiri terutama pada pengelasan oksi-asetilin. Salah satu cara untuk memperbaiki sifat pengelasan tersebut ialah dengan cara melakukan pegujian kekuatan tarik. Penelitian bertujuan untuk mengetahui pengaruh variasi kampuh las terhadap kekuatan tarik baja St37 pada pengelasan oksi-asetilin. Penelitian menggunakan…
Teknologi pengelasan penting untuk proses penyambungan di industri manufaktur, namun ada proses pengelasan yang dapat mempengaruhi sifat sambungan las pada logam. Pada proses pengelasan akan mengubah sifat-sifat logam yang dilakukan pengelasan. Ini termasuk perubahan sifat fisik, mekanik dan kimia. Penelitian ini bertujuan untuk mengetahui besar kekuatan tarik pada pengelasan TIG (Tungsten Iner…
Pengelasan merupakan sebuah proses teknik penyambungan material logam untuk mencairkan sebagian logam pengisi dan logam induk dengan tekanan atau tanpa tekanan, dengan atau tanpa logam tambahan yang menciptakan hasil sambungan las kontinu, ditujukan untuk merakit (assembly) beberapa komponen menjadi satu bentuk mesin. Salah satu pengelasan yang tidak menggunakan logam pengisi (filler) adalah pe…
Welding is one of the metal splicing methods that are widely used for building construction. Dissimilar welding is the dissimilar release of different materials that are not same. Welding using SMAW with Low Carbon Steel and High Carbon Steel material.Research objective to analyze physical, mechanical properties and review defects arising in dissimilar welding connections. The result of dye pen…
In the development of technology in the modern era, material connection by welding is found in the manufacture of a prodak / component. Variations in welding splicing are important factors for determining the tensile strength of welding joints. This study aims to find out the comparison of tensile strength of low carbon steel material (BKR), by using GMAW welding with variations of campuh using…