Relevant bibliographies by topics / Shielded Metal Arc Welding (SMAW)

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Shielded Metal Arc Welding (SMAW)'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Shielded Metal Arc Welding (SMAW)"

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Singh, Amandeep, and Neel Kanth Grover. "Weld Properties of Low Carbon Steel Using Shielded Metal Arc Welding." Applied Mechanics and Materials 813-814 (November 2015): 486–90. http://dx.doi.org/10.4028/www.scientific.net/amm.813-814.486.

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Welding is basic part of the most modern assembly and manufacturing operations. Shielded metal Arc Welding process has hard facing and fabrication job application due to low cost electrode, increasing alloy transfer efficiency and low dilution with substrate without losing production capacity. SMAW electrode is coated with metal mixture called flux, which on decompose produce gases to restrict weld contamination, generating deoxidizers to disinfect the weld. The choice of electrode for SMAW lies on a number of factors, like weld material, welding direction and the preferred weld properties. The present paper investigate the microstructure and hardness properties of the Low carbon steel pipe welded using shielded metal arc welding with different electrode combinations.
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Cornish, Neville, Rahim Kurji, Anthony Roccisano, and Reza Ghomashchi. "Techno-economic Feasibility of Modified Pulse Arc Deposition on Thick Section of Quenched and Tempered Steel." MATEC Web of Conferences 269 (2019): 01012. http://dx.doi.org/10.1051/matecconf/201926901012.

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Quenched and Tempered (Q&T) steels welded structures that have numerous applications, particularly in the defence industry. However these steels are particularly prone to Hydrogen Assisted Cold Cracking (HACC) and require a highly-skilled welder to fabricate defect-free structures. This is due to the selection of the manual metal arc welding process of shielded metal arc welding (SMAW). The introduction of Modified Pulsed arc mode of depositions; a variation to Pulsed Arc deposition, has advanced deposition rates and can be employed by welders with a greater variation in skill. In this body of work, full strength butt welds are fabricated on 20mm, sections of Q&T AS/NZS 3597 Grade 700 steel under a high level of restraint using Modified Pulse Gas Metal Welding (GMAW-P) and conventional Shielded Metal Arc Welding (SMAW). The study investigates the economic feasibly of the two modes of deposition and the propensity for cracking when welded under high restraint. The study concluded that modified GMAW-P achieved reduction of 63% in the ‘Arc-On' time and an 88% reduction in the total normalised fabrication time. However, due to the increased propensity to lack of fusion type defects, strict controls must be employed in optimising the welding procedure to mediate for such defects if GMAW-P is to provide a techno-economically beneficial alternative to conventional SMAW when welding Q&T steels.
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Niknamian, Sorush. "Investigation of Microstructure and Corrosion Resistance of Dissimilar Welded Joint between 304 Stainless Steel and Pure Copper." Budapest International Research in Exact Sciences (BirEx) Journal 1, no. 3 (July 29, 2019): 76–82. http://dx.doi.org/10.33258/birex.v1i3.382.

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Nowadays, welding of dissimilar metals has become significant. In this process, a number of parameters including but not limited to type of electrode, amount of current, preheating temperature, and welding rate, that are essential to be taken into account. For welding of dissimilar metals, various methods are exploited including shielded metal arc welding (SMAW) and gas tungsten arc welding (GTAW). The stimulus for studying welding of 304L stainless steel to pure copper originates from difficulties in joining copper parts of water-circulating molds to their steel part. In this study, the welding is performed on plates of steel and copper using SMAW, GTAW and combined SMAW+GTAW welding methods with EL-CuMn2, ENiCrMo-6 and ER70S-4 electrodes. In order to investigate the microstructure and corrosion resistance behavior of welds, the samples were characterized using microstructural study and polarization test. It was observed that among all four welding methods, only combined SMAW+GTAW welding process resulted in successful joint between 304L stainless steel and copper. Both obtained joints possess suitable microstructure and corrosion resistance.
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Baklanov, Sergey V., Anton S. Gordynets, A. S. Kiselev, and Mikhail S. Slobodyan. "New Developments to Reduce Arc Blow during SMAW of Pipelines." Materials Science Forum 938 (October 2018): 96–103. http://dx.doi.org/10.4028/www.scientific.net/msf.938.96.

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In some cases, magnetic blow does not allow using direct current for shielded metal arc welding. This is especially true for repair work on pipelines after magnetic flaw detection. Alternating current is useful to control magnetic arc blow during welding. The most promising results give technologies using alternating current with a rectangular waveform. However, the advantages of this method have not been used until now. The main goal of this study is to determine the influence of the parameters of the arc on its stability and the metal transfer mode during shielded metal arc welding under perturbing action of the magnetic field. The proposed methodology of experimental research allowed identifying the cause of arc extinction using direct current electrode positive. This is due to displacement of molten droplets of metal by the magnetic field from of the uneven melted electrode coating and its subsequent separation. This problem was solved using alternating current with the square waveform pulse mode at a frequency of 500 Hz. The amplitude-time parameters of the current pulses provide stabilization of the arc and volume of the molten electrode metal.
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Alkahla, Ibrahim, and Salman Pervaiz. "Sustainability assessment of shielded metal arc welding (SMAW) process." IOP Conference Series: Materials Science and Engineering 244 (September 2017): 012001. http://dx.doi.org/10.1088/1757-899x/244/1/012001.

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Zhang, Tian Hui, Wen Min Liu, Ren Ping Xu, and Bin Xu. "Effect of Welding Method on Weld Defects of ADB610 Steel." Advanced Materials Research 97-101 (March 2010): 818–21. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.818.

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Statistical analysis was carried on weld defects of low carbon bainite ADB610 steel using shielded metal arc welding (SMAW) and mixed active-gas arc welding (MAG). By Pareto diagram analysis, although the ratio of porosity air hole using SMAW is slightly higher than the one using MAG, there is no qualitative difference in ADB610 steel weld defect types between two welding methods. And the crack occurs seldom, which indicates ADB610 steel has lower crack-sensitivity using SMAW and MAG. By histogram analysis and rank test, it can be concluded that there is distinctive difference in defect size between SMAW and MAG, and the average size using SMAW is bigger than the one using MAG. So if possible, MAG is recommended for low carbon bainite ADB610 steel.
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V. Balaguru, V. Balasubramanian, and P. Shivkumar. "Tensile properties of shielded metal arc welded ultrahigh hard armour steel joints." World Journal of Advanced Engineering Technology and Sciences 1, no. 2 (December 30, 2020): 071–84. http://dx.doi.org/10.30574/wjaets.2020.1.2.0029.

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The present generation Armoured Tracked Vehicles (ATVs) are constructed using Rolled homogenized armour (RHA) grade steels closely confirming with AISI 4340 specifications. However, in future Armoured Tracked Vehicles (ATVs), the overall weight of ATVs has to be reduced enormously and hence, the designers have prescribed to employ Ultra High Hard Armour (UHA) steels for the construction. Welding is considered to be one of the important fabrication methods in ATVs construction. However, welding of UHA steels is highly challenging due to higher hardness and higher carbon content. Shielded Metal Arc Welding (SMAW) is among the most widely employed welding process in the construction of ATVs since it is more versatile and cost-effective. Armour grade steels are welded conventionally using Austenitic Stainless Steel (ASS) consumables to eliminate the serious problems of hydrogen induced cracking. Hence, in this investigation, an attempt has been made to study the influence of ASS welding consumables on tensile properties and hardness of UHA steel joints made by SMAW process. UHA steel plates having 15 mm thickness were welded by SMAW process using five different ASS consumables (having different Creq/Nieq ratio). Tensile properties (unnotched and notched) of the welded joints were evaluated. From this investigation, it was observed that the joint welded using ASS consumable (having higher Creq/Nieq ratio) exhibited superior tensile properties as result of the evolution of ferrite phase with vermicular and globular morphology in the austenite matrix at weld metal region.
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Kumar, Ravi Ranjan, and P. K. Ghosh. "Fracture Mechanics of Conventional and Narrow Groove Pulse Current Gas Metal Arc Welds of HSLA Steel." Materials Science Forum 710 (January 2012): 451–56. http://dx.doi.org/10.4028/www.scientific.net/msf.710.451.

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Mechanical and fracture properties of 20MnMoNi55 grade high strength low alloy (HSLA) steel welds have been studied. The weld joints were made using Gas Tungsten Arc Welding (GTAW), Shielded Metal Arc Welding (SMAW) and Pulse Gas Metal Arc Welding (P-GMAW) methods on conventional V-groove (V-Groove) and Narrow groove (NG-13). The base metal and weld metal were characterised in terms of their metallurgical, mechanical and fracture toughness properties by following ASTM procedures. The J-Integral fracture test was carried out using compact tension C(T) specimen for base and weld metal. The fracture toughness and tensile properties of welds have been correlated with microstructure. In conventional V-groove welds prepared by P-GMAW shows the improvement in initiation fracture toughness (JIC) as compared to the weld prepared by SMAW. Similar improvements in tensile properties have also been observed. This is attributed to reduction in co-axial dendrite content due to lower heat input during P-GMAW process as compared to SMAW. In the narrow groove P-GMA weld prepared at f value of 0.15 has shown relative improvement of JIC as compared to that of the weld prepared by SMAW process.
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Noor, C. W. Mohd, Manuhutu Ferry, and W. B. Wan Nik. "A Study of Software Approach for Predicting Weld Bead Geometry in Shielded Metal Arc Welding (SMAW) Process." Applied Mechanics and Materials 554 (June 2014): 386–90. http://dx.doi.org/10.4028/www.scientific.net/amm.554.386.

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The prediction of the optimal weld bead width is an important aspect in shielded metal arc welding (SMAW) process as it is related to the strength of the weld. This paper focuses on investigation of the development of the simple and accurate model for prediction of weld bead geometry. The experiment used welding current, arc length, welding speed, welding gap and electrode diameter as input parameters. While output parameters are bead width, depth of penetration and weld reinforcement. A number of 33 mild steel plate specimens had undergone the SMAW welding process. The experimental data was used to develop mathematical models using SPSS software. The actual and predicted values of the weld bead geometry are compared. The proposed models shows positive correlation to the real process.
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Ardin, Masri Bin, and Mujiono Mujiono. "MODEL PEMBELAJARAN PRAKTIK PENGELASAN SHIELED METAL ARC WELDING(SMAW) POSISI 1G JURUSAN TEKNIK PENGELASAN." Jurnal Pendidikan Vokasi 6, no. 2 (August 12, 2016): 198. http://dx.doi.org/10.21831/jpv.v6i2.6343.

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Penelitian ini bertujuan untuk: (1) mendeskripsikan model pembelajaran praktik yang berlangsung atau disebut model pembelajaran regular praktek pengelasan SMAW posisi 1G di SMK Negeri 2 Pengasih; (2) mengetahui efektifitas dan mendeskripsikan bahan yang digunakan dalam praktek pengelasan SMAW posisi 1G, misalnya: besi plat, mata gerinda, elektroda, dan waktu yang digunakan selama praktek pengelasan SMAW posisi 1G. Penelitian ini merupakan penelitian deskriptif dengan teknik pengumpulan data menggunakan wawancara, dokumentasi, angket dan penilaian skill pengelasan. Asessment skill pengelasan mengacu pada Acean Skill Welding Competition. Hasil penelitian yaitu: (1) model pembelajaran praktek pengelasan SMAW posisi 1G terdiri dari 4 pertemuan teori dan 13 pertemuan praktik; (2) model pembelajaran praktik pengelasan di SMKN 2 Pengasih sudah efektif tetapi untuk rutinitas pengelasan belum efektif untuk membentuk skill pengelasan SMAW posisi 1G dengan sistem assesment Asean Skill Welding Competition. Fasilitas utama dalam praktek pengelasan SMAW posisi 1G adalah mesin las. Sementara itu SMKN 2 pengasih memiliki 6 buah mesin las dengan rasio 1 mesin las untuk 5 orang siswa. Bahan habis pakai untuk 30 orang siswa per semester yang menggunakan model pembelajaran praktek pengelasan adalah besi plat ± 100-150 kg, mata gerinda total ± 5-6 keping, elektroda ± 9-10 box dan total waktunya aktif 77 jam selama satu semester. Kata kunci: pembelajaran Praktik Pengelasan SMAW, Skill Siswa untuk Posisi 1G LEARNING MODEL OF SHIELD METAL ARC WELDING (SMAW) PRACTICE OF 1G POSITION AT THE WELDING ENGINEERING DEPARTMENT Abstract This research aimed to: (1) describe the learning model of shield metal arc welding (SMAW) practice of 1G position at the Welding Engineering Department of State Vocational High School (SMKN) 2 Pengasih; (2) find the effectiveness and describe materials needed in the learning model of shield metal arc welding (SMAW) practice of 1G position, for examples: iron plate, grind eye, and electrode, and time needed for SMAW 1G position welding practice. This was a descriptive research study using the data collection techniques of interview, documentation, questionnaire, and t welding skill asessment rubrics. The welding skill asessment was based on Asean Skill Welding Competition (ASWC). The research result showed: (1) the learning model of shield metal arc welding (SMAW) practice of 1G position consisted of 4 meetings of theories and 13 meetings of practices; (2) the learning model of shield metal arc welding (SMAW) practice of 1G position at the Welding Engineering Department of SMK Negeri 2 Pengasih was effective but was not effective for routine practice of SMAW 1G position with the assessment system based on Asean Skill Welding Competition. The main facility required in welding practice of 1G position is a welding mechine. Meanwhile SMKN 2 Pengasih had six welding mechines with the ratio of1 mechine to 5 students. Using the learning model of shield metal arc welding (SMAW) practice of 1G position for 30 students per semester needed usable supplies of approximately 100-150 kg iron plates, 5-6 pieces of grind eye, 9-10 boxes of electrode, and the total time of 77 hours. Keywords: SMAW welding practice learning, student skills in 1G position
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Dissertations / Theses on the topic "Shielded Metal Arc Welding (SMAW)"

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Greene, Michael K. "The effects of titanium on the mechanical properties of shielded metal arc welding (SMAW) of C-Mn steels." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8297.

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The strength and toughness of low alloy steel shielded metal arc weld (SMAW) metal is markedly improved by the presence of the microconstituent acicular ferrite. Since acicular ferrite is nucleated by the non-metallic inclusions present in the weld metal. Its presence is determined by the size, number, distribution and chemical composition of these inclusions. Previous work has shown that inclusions containing no titanium are usually ineffective as nucleates of acicular ferrite in some C-Mn steel weld metal whereas inclusions containing small amounts (less than 5%) of titanium or more can produce a microstructure containing as much as 70% of acicular ferrite
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Sowards, Jeffrey William. "Development of a chromium-free consumable for joining stainless steel." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1237845645.

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Liang, Dong. "Environmental and Alloying Effects on Corrosion of Metals and Alloys." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243995273.

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Cronje, M. "Finite element modelling of shielded metal arc welding." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/2649.

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Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2005.
This study involved the modelling and verification of the Shielded Metal Arc Welding of mild steel with the focus on displacement and temperature distribution prediction of welded plates. The project was divided into three phases namely; the literature survey into finite element modelling of welding processes, the modelling of a welding process and verification of the modelling with experimental results. A working welding model was created using a commercial finite element software package with the capabilities to model welding processes. The welding model was systematically developed from a two-dimensional model into a threedimensional full physics process model. Experimental measured welding heat input parameters were applied in the model, temperature dependent material properties were applied and actual structural restraints from the experiments were modelled. Displacement and temperature distributions were measured on mild steel plates welded with the Shielded Metal Arc Welding process. The plate temperature was measured at various locations with K-type thermocouples spot welded onto the plates. Plate deformation was measured at various stages of the manufacturing process. Tendencies in plate displacement were investigated with a change in certain welding parameters. The finite element model was verified and good correlations were found, especially for the temperature distribution in the welded plates.
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Gaal, Brian. "Development of a Coating Formulation Procedure for Ni-base Shielded Metal Arc Electrodes with Varying Core Wire Composition." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354481846.

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Lindmark, Terese. "Welding parameter window for Tandem gas-shielded metal arc welding and fatigue in welded T-joints." Thesis, University West, Department of Technology, Mathematics and Computer Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-828.

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Miller, Jay. "The development of a curriculum for a course in manipulative skills for shielded metal arc welding." CSUSB ScholarWorks, 1997. https://scholarworks.lib.csusb.edu/etd-project/1188.

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Grantham, Jesse A. "Fundamental study of interfacial tension effects on weld bead profile in the shielded metal arc welding process /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487779914826799.

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Du, Plessis John. "Control of diffusible weld metal hydrogen through arc chemistry modifications." Diss., Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-05152007-131110.

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Ngonyoza, Ntsikelelo. "The influence of shielded metal arc welding (SMAW) inter-pass temperature on the ferrite number of weld joints made on AISI 304H stainless steel." Thesis, 2015. http://hdl.handle.net/10539/17702.

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The research focused on the influence of welding inter-pass temperature in 304H type austenitic stainless steel weld joints in the as-welded condition. The shielded metal arc welding process was used to weld the joints. The following was evaluated: the theoretical and measured ferrite numbers, solidification mode and delta ferrite morphology, as well as the evolution and precipitation of secondary phases i.e. sigma phase in the weld, chromium carbides in the heat affected zone. After the evaluation, it was clear that the inter-pass temperature had an effect on solute distribution during cooling and subsequent calculated ferrite numbers of the welds. The calculated ferrite numbers, that were determined using the weld metal chemistry of each joint and the WRC-1992 constitution diagram, increased from FN of 1 to FN of 3 with the increase in welding inter-pass temperature from 105°C-100°C and to 195°C-200°C respectively. The measured ferrite number showed no correlation with the increases in interpass temperature. The highest measured ferrite number of 3.8 was obtained when welding at an inter-pass temperature of 135°C – 140°C which was closest to the FN of 5 required minimum, as specified by the SAPREF Refinery, to prevent solidification cracking. No solidification cracking was observed in any of the specimens evaluated in this study even though all the specimens had ferrite contents well below FN 5. This observation supports research that indicates that controlling of the primary solidification mode as delta ferrite is more important a factor in preventing solidification cracking than trying to control the actual ferrite content of the weld metal. The primary solidification mode of the weld was a combination of the austenite-ferrite (AF) to predominantly ferrite-austenite (FA) with the FA solidification mode dominating with the increase in inter-pass temperature. The nature of the carbides formed due to low temperature sensitization in the heat affected zone of the base metal changed with the increase in inter-pass temperature. The precipitated chromium carbides only formed discontinuous carbide networks at the interpass temperature of 195°C-200°C. The transformation of sigma from delta ferrite was not observed in the columnar dendritic and mushy zones of the weld metal. This research revealed the optimum welding inter-pass temperature for welding 304H austenitic stainless steel with 308H electrode to be 135-140°C.
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Books on the topic "Shielded Metal Arc Welding (SMAW)"

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Greene, Michael K. The effects of titanium on the mechanical properties of shielded metal arc welding (SMAW) of C-Mn steels. Monterey, Calif: Naval Postgraduate School, 1997.

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Practical shielded metal arc welding. Upper Saddle River, N.J: Prentice Hall, 1998.

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McIlwain, J. F. Fumes from shielded metal arc welding electrodes. Pittsburgh, PA: U.S. Dept. of the Interior, Bureau of Mines, 1987.

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International Pipe Trades Joint Training Committee. Oxy-fuel cutting & welding and shielded metal-arc welding. Washington, D.C: International Pipe Trades Joint Training Committee, 2001.

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Novozhilov, N. M. Fundamental metallurgy of gas-shielded arc welding. New York: Gordon and Breach Science Publishers, 1988.

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D'Souza, Colin. Development of low hydrogen welds using shielded metal arc welding. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1993.

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Claussen, Carsten Martin. Heftschweissverfahren für das Lagefixieren von Werkstücken beim Schutzgasschweissen mit Industrierobotern. Berlin: Springer-Verlag, 1991.

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AWS Committee on Procedure and Performance Qualification. Standard welding procedure specification (WPS) self-shielded flux cored arc welding of carbon steel: (M-1/P-1/S-1, Group 1 or 2), 1/8 through 3/4 inch thick, E71T-11, as-welded condition. Miami, Fla: American Welding Society, 1995.

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Utner, Wolfgang. Planung der Kinematik von Industrierobotersystemen zum Schutzgasschweissen im Schiffbau. Berlin: Springer-Verlag, 1992.

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The Effects of Titanium on the Mechanical Properties of Shielded Metal Arc Welding (SMAW) of C-MN Steels. Storming Media, 1997.

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Book chapters on the topic "Shielded Metal Arc Welding (SMAW)"

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Hirata, Yoshinori, K. Tsujimura, B. Y. B. Yudodibroto, M. J. M. Hermans, and I. M. Richardson. "Modeling of Molten Drop Oscillation in Gas Shielded Metal Arc Welding." In THERMEC 2006, 3973–78. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-428-6.3973.

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Duplakova, Darina, Michal Hatala, Dusan Knezo, Frantisek Botko, Pavol Radic, and Dusan Sutak. "Comparison of the Weld Quality Created by Metal Active Gas and Shielded Metal Arc Welding." In Lecture Notes in Mechanical Engineering, 242–56. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16943-5_22.

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Kolhe, Kishor Purushottamrao, Fetene Teshome, and Aragaw Mulu. "Effects of Shielded Metal Arc Welding Process Parameters on Mechanical Properties of S355JR Mild Steel." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 525–36. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43690-2_38.

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Khalid, Norfadhlina, Zaherrudin Yusof, and M. A. Mun’aim Mohd Idrus. "Defects of Post Weld Heat Treatment on A36 Carbon Steel Welded by Shielded Metal Arc Welding." In Engineering Applications for New Materials and Technologies, 481–89. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72697-7_40.

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Pratap Singh, Rudra, Abhishek Mishra, Abhishek Chauhan, and Ashu Kumar Verma. "A Review of Effect of Welding Parameters on the Structure and Properties of the Weld in Shielded Metal Arc Welding Process." In Advances in Engineering Materials, 229–37. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6029-7_22.

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Singh, Mandeep, Loveleen Kumar Bhagi, and Hitesh Arora. "Effects of Shielded Metal Arc Welding Process Parameters on Dilution in Hardfacing of Mild Steel Using Factorial Design." In Lecture Notes in Mechanical Engineering, 207–20. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4748-5_21.

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Singh, Gursharan, Shubham Sharma, Jujhar Singh, Vivek Aggarwal, Amit Bansal, and Suresh Mayilswamy. "Influence of Nickel-Based Cladding on the Hardness and Wear Behaviour of Hard-Faced Mild Steel Using E-7014 Electrode Using Shielded Metal Arc Welding." In Green Materials and Advanced Manufacturing Technology, 35–50. First edition. | Boca Raton, FL : CRC Press, 2021. | Series: Green engineering and technology: Concepts and applications: CRC Press, 2020. http://dx.doi.org/10.1201/9781003056546-3.

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"Shielded metal arc welding (SMAW) electrode classification." In Advanced Welding Processes, 250–53. Elsevier, 2006. http://dx.doi.org/10.1016/b978-1-84569-130-1.50025-2.

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"Metal arc gas-shielded welding." In Welding Practice, 55–68. Routledge, 2014. http://dx.doi.org/10.4324/9781315800042-7.

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"Shielded Metal Arc Welding[1]." In Welding Fundamentals and Processes, 302–8. ASM International, 2011. http://dx.doi.org/10.31399/asm.hb.v06a.a0005570.

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Conference papers on the topic "Shielded Metal Arc Welding (SMAW)"

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Dubey, J. S., J. K. Chakravartty, P. K. Singh, and S. Banerjee. "Fracture Behaviour of Type 304LN Stainless Steel and Its Welds." In 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/icone14-89720.

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SA312 type 304LN stainless steel material, having closer control over impurities and inclusion content, is the intended piping material in the Advanced Heavy Water Reactors. Deformation, fatigue and fracture behaviour of this material and its weldments have been characterized at ambient temperature and at 558K. The details of the fractographic investigations and stretch zone width measurements are also discussed. The base metals shows high initiation toughness (>500 kJ/m2) and large tearing modulus at ambient and operating temperatures. Shielded Metal Arc Welding (SMAW) weld metal shows much much reduced initiation toughness and tearing resistance in comparison to base metal and Gas Tungsten Arc Welding (GTAW) welds. This is attributed to larger density of second phase inclusions in the SMAW weld metal. SZW measurements give a good alternate estimate of the toughness of the materials. Fatigue crack growth rate in SMAW weld metal was found to be comparable to base metal at higher load ratios.
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2

Liu, Stephen. "A Decade of Progress in Underwater Wet Welding Using the SMAW Process (1990-2003)." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51465.

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It is well established that underwater wet welding (UWW) offers significant cost savings over other repair techniques for submerged structures such as petroleum production platforms, ships, and piers. Due to the deleterious effect of increased pressure on weld quality, innovative consumables are required for the production of quality wet welds. Manganese was added to the electrode coating to replenish its loss from the weld pool. Titanium and boron were added to control the molten metal oxygen potential and refine the as-solidified and reheated weld metal microstructure. Rare-earth metals (REM) were added to control the weld metal oxygen content. Finally, weld metal nickel content was optimized to improve impact toughness. Selected results of these approaches are presented in this work. These recent developments clearly demonstrate that it is possible to achieve significant progresses in wet welding using shielded metal arc (SMA) consumables, if these are designed following sound metallurgical principles.
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3

Baek, Jong-hyun, Young-pyo Kim, and Woo-sik Kim. "Effect of Orbital Automatic Welding on the Weld Metal Mechanical Properties in API 5L X65 Natural Gas Transmission Pipe." In 2000 3rd International Pipeline Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/ipc2000-123.

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API 5L X65 steel pipes with a 17.5mm wall thickness and 762mm in outer diameter were welded using an orbital automatic welding process. Flux Cored Arc Welding (FCAW) and Gas Tungsten Arc Welding (GTAW) consumables were utilized to evaluate automatic the welding process. Manual welds were deposited using GTAW with ER70S-G filler metal for the root pass and Shielded Metal Arc Welding (SMAW) with low hydrogen E9016-G electrode for the remaining passes. Charpy impact test, CTOD (Crack Tip Opening Test) test and micro-hardness test on the weld metal were carried out and the effects of weld metal composition and microstructure on the weld metal toughness were investigated. The filler metals that have superior fracture toughness were E80T1-K2 and E71T-1 of FCAW process and ER80S-G of GTAW process. The filler metals that have proper hardness were E80T1-K2 and E71T-1 of FCAW process.
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4

Patrick, Charles W., and William F. Newell. "Understanding Welding Cost: Using Flux-Cored Arc Welding (FCAW) for Cost Reduction and Productivity Improvement." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28084.

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Welding is often listed as a production operation that companies would like to reduce overall cost and improve productivity; however, most companies merely implement cost reduction programs focused on lowering welding consumable costs. Though significant and important, these associated material costs typically represent only a small percentage to the total cost, i.e., 10 to 20% (welding consumables 8 to 15% and power and equipment 2 to 5%) of the overall welding cost in a typical U.S. welding operation. To further reduce welding costs, companies need to look further. Since labor and overhead, which relates directly to productivity, represents approximately 80 to 85% of the overall cost of any given welding operation they also offer the greatest opportunities for significant cost reduction. Simply changing from Shielded Metal-Arc Welding (SMAW) to Flux-Cored Arc Welding (FCAW) can reduce labor cost and increase productivity. Due to the increased deposition efficiency and operating factor of FCAW the weld deposition rate increases thus translating into increased productivity. The increase in productivity, in turn, reduces labor cost by reducing the man-hours required for the completion of any given weld. An added benefit gained by using FCAW is that it also significantly reduces the skill level required by the welder to produce welds of equal quality. When all of these benefits are combined FCAW yields significant cost savings opportunities by reducing labor and simultaneously improving productivity.
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5

Yu, Weiwei, Minyu Fan, Jinhua Shi, Fei Xue, Mingya Chen, and Xu Chen. "A Study on the Fracture Toughness at Different Locations of SMAW Welded Joint of Primary Coolant Piping." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84422.

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Two primary coolant pipes were narrow-gap multipass circumferentially butt welded by shielded metal arc welding (SMAW) method and then subjected to micro-hardness tests to distinguish the base metal (BM), heat affected zones (HAZs), fusion zones (FZs) and weld metal (WM). Subsequently, uniaxial tensile tests were performed to investigate the tensile properties on each area in SMAW welded joints. The fracture toughness has been investigated at the above four different locations of the SMAW welded joints. Then the 0.2mm offset line method and the stretch zone width method have been both employed to determine the critical initial fracture toughness Ji. The results indicate that the fusion zones (FZs) have the worst fracture toughness compared with other locations over weld joints.
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6

Hara, Yasuhiro, Keisuke Shiga, and Nobuo Nakazawa. "Effect of Small Amount of Bismuth on Corrosion Resistibility of Austenitic Stainless Steel Weld Metals." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1112.

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Flux-cored are welding (FCAW) has increased recently because of high welding efficiency. However, a small amount of bismuth in the weld metals was a residue from the flux component that was added for improving slag detachability. The effect of small amount of bismuth in austenitic stainless steel weld metal on corrosion behavior in wet corrosion environment is not adequately clear because there is little reported to date. In the present research, the effect of bismuth which remained in the weld metal on the corrosion behavior of 308-type weld metal in wet corrosive solution was examined by using different bismuth containing weld metal. Measurement of the anodic polarization curve in a sulfuric acid solution, determination of pitting potential and conducting stress corrosion cracking (SCC) tests in a chloride solution, and implementation of boiling nitric add solution tests were conducted. In addition, the corrosion behavior of the FCAW weld metal was compared with that of Bi-free weld metals by shielded metal arc welding (SMAW) and gas tungsten arc welding (GTAW) to clarify how the corrosion behavior varies between the welding processes. In this research, no noticeable adverse effect of bismuth remained in the 308-type austenitic FCAW weld metals was observed in corrosion test.
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7

Pessoa, Ezequiel C. P., Leandro F. Ribeiro, Alexandre Q. Bracarense, Weslley C. Dias, Luciano G. D. Andrade, Stephen Liu, Valter R. Santos, and Mauri´cio J. Monteiro. "Arc Stability Indexes Evaluation on Underwater Wet Welding." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20876.

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Underwater wet welding (UWW) with shielded metal arc welding (SMAW) is employed basically in repairs of offshore structures, including platforms, ships and others. The main problems of this type of welds are related, of course, with water presence in the electric arc that causes higher cooling rates, Oxygen and Hydrogen availability in the arc atmosphere and arc instability. Many of research and test welding programs in laboratory are undertaken in shallow water performed by automatic devices using hyperbaric chambers to simulate depths. Also, welding arc signals are acquired using data acquisition systems and the arc stability is estimated through indexes calculated from values acquired and analyzed. It is very well known the reduced stability of the wet welding process at shallow depths — less than approximately five meters. So this effect would be considerable significant since it can be used to make correlations between the arc stability indexes and the welds quality results. The main objective of this work was to evaluate the efficiency of the most used arc stability indexes reported in the literature in detect the arc instability effect of shallow water wet welding. Bead-on-plate welds had been made using a gravity feeding system device inside a hyperbaric chamber, applying straight polarity (DCEN) in ASTM A36 steel plates, using the same weld parameters in two different depths, 0.5 and 20.0 meters. Rutile, basic and oxidizing commercial electrodes types prepared for UWW with 3.25mm rod diameter were used. Visual analysis, bead morphology and arc stability were the criteria used to evaluate the weld quality. The voltage and current arc signals were acquired at 10 KHz rate. The arc stability indexes measured were average voltage and current and its standard deviation, S (Imax/Imin) parameter, voltage and current square mean, arc “re-ignition” voltage and current, metal transfer time and its deviation, metal transfer frequency and its deviation, short circuit time and its deviation and the voltage versus current graph area. The results shown that none of the stability indexes tested has been shown to indicate, alone, a good relationship to the surface appearance obtained for the three electrodes studied. The rutile type electrode was the only one that clearly produced better weld appearance at 20 meters than in shallow water depth. The rutile and oxidizing electrodes showed better surface appearance with the increased number of short circuits. For the rutile electrode, the globular transfer mode with high voltage were directly related with poor weld bead surface appearance.
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8

He, Xiaodong, Chunyong Huo, Xinli Han, Lixia Zhu, and Chuanjing Zhuang. "Experimental Study on Girth Welds of X80 High Deformability Pipeline." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61250.

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Girth welds of X80 high deformability pipeline were welded by self-shield flux-cored arc weld (FCAW) and manual shield-metal arc weld (SMAW). The FCAW used E9018-G electrode to weld root and under-matched flux-cored wires to fill welding and cap welding. The SMAW also used the same welding consumable to weld root, but the metal of the filler welding and cap welding is overmatched electrodes. The mechanical properties testing and metallography testing of girth welded joints were carried out. It was found that the qualifications of two welding procedures met the requirements of API Std. 1104. The test results of Charpy impact (CVN) and crack-tip opening displacement (CTOD) of welded joints for FCAW were higher than that of welded joints for SMAW. The microstructures of FCAW welds were polygonal ferrite (PF) and pearlite (P). But the microstructures of SMAW welds were polygonal ferrite (PF), intra-granular nucleated acicular ferrite (IAF) and pearlite (P). The microstructures of fusion zones are granular bainitic ferrite (GBF), and that there is no martensite in coarse grain heat affected zone (CGHAZ) and fine grain heat affected zone (FGHAZ). So heat affected zone (HAZ) exhibited excellent fracture toughness.
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9

Ghosh, P. K., Shrirang G. Kulkarni, and Banshi Prasad Agarwal. "High Deposition Pulse Current GMAW Can Change Current Scenario of Thick Wall Pipe Welding." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77549.

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The high deposition pulse current gas metal arc welding (P-GMAW) with multiple drop transfer per pulse has been used to weld thick wall austenitic stainless steel pipe. Welding of the pipe was also carried by the commonly used shielded metal arc welding (SMAW) and conventional gas metal arc welding (GMAW) processes and compared. Utility of the P-GMAW to facilitate narrow gap welding of the thick wall pipe by appropriate control of pulse parameters has been discussed in reference to produce superior quality weld. The superiority of weld quality has been justified through the microstructure, mechanical properties, residual stresses and fracture mechanics properties of weld joints. Basic characteristics of the P-GMAW process changing the scenario of thick wall pipe welding have been closely studied with respect to its arc characteristics and behaviour of metal transfer. A precise control of the process in order to achieve desired thermal, mechanical and microstructural effects in the narrow gap welding has been achieved by regulation of summarised influence of pulse parameters, mean current (Im) and arc voltage. The summarised influence of pulse parameters is defined by a hypothetically defined dimensionless factor φ = [(Ib/Ip) f.tb] where, the Ib, Ip, f and tb are the base current, peak current, pulse frequency and pulse off (base) time respectively.
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10

Vega, Oscar E., Jose´ M. Hallen, Agusti´n Villagomez, and Antonio Contreras. "Microstructure, Mechanical Properties and SSC Susceptibility of Multiple SMAW Repairs in Line Pipe Girth Welds." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64187.

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Girth welds of seamless API X52 steel pipe containing multiple shielded metal arc welding (SMAW) repairs and one as-welded condition were studied. Microstructural characterization, mechanical behavior and sulfide stress corrosion cracking (SSC) susceptibility of the welded joints were evaluated by means of optical and scanning electron microscopy, hardness, tension, Charpy-V impact resistance and slow strain rate tests (SSRT). The results of this work indicate that increasing the number of welding repairs promotes grain growth in the heat affected zone (HAZ). The yield strength (YS) and ultimate tensile strength (UTS) for the different welding repairs satisfy the specified minimum values of the material. Significant reduction in Charpy-V impact resistance with the increases of the number of repairs was found in the coarse grained heat affected zone (CGHAZ). A high susceptibility to SSC was exhibited by the welded joints and the intercritical heat affected zone was the most susceptible area to SSC.
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