Thematische Bibliographien / Weld overaly cladding

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Auswahl der wissenschaftlichen Literatur zum Thema „Weld overaly cladding“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 9. Februar 2022

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Zeitschriftenartikel zum Thema "Weld overaly cladding"

Brown, Alan. „Weld overlay cladding – the solution to pump corrosion?“ World Pumps 2005, Nr. 469 (Oktober 2005): 50–53. http://dx.doi.org/10.1016/s0262-1762(05)70785-9.

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Chan, Lydia, Islam Shyha, Dale Dryer und John Hamilton. „Optimisation of Weld Overlay Cladding Parameters Using Full-Factorial Design of Experiment“. Materials Science Forum 880 (November 2016): 54–58. http://dx.doi.org/10.4028/www.scientific.net/msf.880.54.

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Weld Overlay Cladding (WOC) shares the same scientific principals as conventional welding where there are multiple governing factors that control the process and outcome. The present work employs a Design of Experiment (DoE) approach to optimising process parameters for cladding a nickel superalloy onto low alloy steel with the aim to improve productivity and quality. The arc current, the clad metal heating current were identified as the key process variables for this stage of experimentation. A full-factorial 4-by-2 test was carried out to identify the optimal levels. Results showed that there is a mild positive trend between the height of individual strings of beads and both variables. However no relationship was established with the depth of penetration, nor with the height of single or double layer stacks. The optimal level of the variables was therefore chosen to be the one that has the highest productivity rate as there were no significant differences. Further experimentation has been planned and described in this paper.

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Ahlstrand, R., und P. Rajamäki. „Toughness and fatigue properties of stainless steel submerged arc weld cladding overlay and significance of postulated flaws in the cladding overlay“. International Journal of Pressure Vessels and Piping 33, Nr. 2 (Januar 1988): 129–42. http://dx.doi.org/10.1016/0308-0161(88)90066-x.

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Wang, Zhi Ling, und Xiao Ding. „Mechanical Property and Corrosion Resistance of the E309L Buffer Layer in Weld Overlay“. Applied Mechanics and Materials 668-669 (Oktober 2014): 39–42. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.39.

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The weld overlay technology of high strength low alloy steel (HSLA) and austenitic stainless steel is widely applied in such fields as petroleum, chemical industry and energy, and its service environment is of high temperature and corrosion. As the matching performance is often poor for both austenitic stainless steel and high strength low alloy steel, cavities and crackles occur easily at the joints, which cause brittle fractures with dangerousness to some extent. So in the present study, the metal-inert gas welding (MIG) is used to clad the austenitic stainless steel to HSLA. In the experimental group, 4mm buffer layer (E309L) and 8mm cladding layer (E347L) were successively cladded on the substrate (Q345B), while 12mm cladding layer was directly deposited on the substrate in the control group. The hot corrosion tests were done, and through the scanning electron microscope (SEM), we observed the cross-sectional morphology. By the X-ray diffraction (XRD), we analyzed ingredients of the corrosion products. The corrosion products in the experimental group mainly consist of iron and nickel oxides, while the products are mainly iron complex compound and salt in the control group. The SEM results show the area near the welding seam of the specimens without buffer layer had been corroded severely. However, only a slight corrosion occurs adjacent to the welding seam. This demonstrates that the buffer layer can protect the specimens from being corroded.

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Pettersson, R. F. A., J. Storesund und M. Nordling. „Corrosion of overlay weld cladding in waterwalls of waste fired CFB boiler“. Corrosion Engineering, Science and Technology 44, Nr. 3 (Juni 2009): 218–26. http://dx.doi.org/10.1179/174327809x419186.

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Yildirim, B., und H. F. Nied. „Residual Stresses and Distortion in Boiler Tube Panels With Welded Overlay Cladding“. Journal of Pressure Vessel Technology 126, Nr. 4 (01.11.2004): 426–31. http://dx.doi.org/10.1115/1.1804198.

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In this study, finite element models are developed to analyze and predict the transient temperature profiles, residual stresses, and distortion incurred during deposition of protective overlay cladding on boiler tube waterwall panels. Plane strain models are used to simulate the evolution of residual stresses on the cross-section of a typical boiler tube panel during deposition of filler metal in sequential weld passes. The results demonstrate how residual stresses from previous weld passes are affected by an adjacent weld bead during the cladding process. Determination of the increment in panel warpage during each weld pass, for a sufficent number of passes, provides the necessary information to estimate of the total panel warpage after cladding coverage on a very large panel surface. It is noted that the total welding induced distortion can be adequately estimated from a relatively small number of weld passes over the typical waterwall cross-section.

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Kottfer, Daniel, Ildikó Maňková, Marek Vrabel', Marta Kianicová, František Rehák und Mária Franková. „Types of Tool Wear of AlTiN Coated Cutting Insert after Machining of Weld Overlay“. Solid State Phenomena 261 (August 2017): 237–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.261.237.

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Authors of the paper present different types of tool wear after machining of weld overlay with AlTiN cutting insert. Welded layer was created on roller made from S355J0 steel by Open Arc (OA) method also referred as Metal One Gas (MOG). Various forms of tool wear were documented by optical microscope. Microchipping of cutting edge, built up edge (BUE) and flank wear were identified on examined round insert in rough turning of hard cladding.

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UDAGAWA, Makoto, Jinya KATSUYAMA, Hiroyuki NISHIKAWA und Kunio ONIZAWA. „Evaluation of Residual stress near the Weld Overlay Cladding by Welding and Post-Weld Heat Treatment“. QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 28, Nr. 3 (2010): 261–71. http://dx.doi.org/10.2207/qjjws.28.261.

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Makoto, Udagawa, Katsuya Jinya, Nishikawa Hiroyuki und Onizawa Kunio. „Evaluation of residual stress near the weld overlay cladding by welding and post-weld heat treatment“. Welding International 28, Nr. 7 (19.03.2013): 521–34. http://dx.doi.org/10.1080/09507116.2012.753238.

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Cao, X. Y., P. Zhu, T. G. Liu, Y. H. Lu und T. Shoji. „Microstructure and electrochemical behavior of stainless steel weld overlay cladding exposed to post weld heat treatment“. Journal of Materials Research 32, Nr. 4 (30.01.2017): 852–62. http://dx.doi.org/10.1557/jmr.2016.526.

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Dissertationen zum Thema "Weld overaly cladding"

Franc, Tadeáš. „Návrh pendlovací hlavy pro plošné navařování Inconelu 625“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443225.

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This diploma thesis deals with the structural design and production of a oscillating head for surface welding of a protective layer of Inconel® 625 superalloy on membrane walls. The design is preceded by a research for possible variants of the solution. Of the two designs, one was successfully manufactured and assembled, and incentives for future improvements were set. For easy optimization and testing of the device, an oscillating motion program was created in the LinMoT Talk 6.9 software. The production costs for the manufactured equipment were then calculated and the recommended selling price was determined, based on a general calculation formula. The result of the project is a functional device, a proposal for its control and a technical - economic evaluation of the production process.

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McVicker, Nathaniel P. „Structural Weld Overlays for Mitigation of Primary Water Stress Corrosion in Nuclear Power Plants“. The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429879662.

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Bücher zum Thema "Weld overaly cladding"

Irradiation effects on strength and toughness of three-wire series-arc stainless steel weld overlay cladding. Washington, DC: Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1990.

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Buchteile zum Thema "Weld overaly cladding"

Corwin, William R., Reynold G. Berggren und Randy K. Nanstad. „Charpy Toughness and Tensile Properties of a Neutron-Irradiated Stainless Steel Submerged-Arc Weld Cladding Overlay“. In Effects of Radiation on Materials: 12th International Symposium Volume II, 951–71. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 1985. http://dx.doi.org/10.1520/stp87019850025.

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Konferenzberichte zum Thema "Weld overaly cladding"

Wang, Yiyu, Rangasayee Kannan, Leijun Li, Yasin Suzuk, Darren Ting, Simon Yuen und Maria Marilin Garcia. „Jagged Cracking in the Heat-Affected Zone of Weld Overlay on Coke Drum Cladding“. In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-66118.

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Jagged cracks were observed in SA240 Type 405 stainless steel cladding of Inconel 625 overlay repaired coke drums. It is found that intergranular cracking is the dominant fracture mode in the fine-grained heat-affected zone (FGHAZ) of the boat specimens. The sensitization effect from the operation and welding thermal cycles leads to the depletion of Cr with the preferential precipitation of Cr-rich M23C6 carbides along the grain boundaries. The cladding FGHAZ has the largest frequency of grain boundaries with higher local strain levels and the highest fraction of grain boundary Cr-rich M23C6 carbides. Thermal stress distributions predicted by finite element analysis clearly show the maximum shear stress to exhibit the typical “jagged” pattern near the cracked regions. Thermal expansion coefficient and strength mismatch among the shell base metal, cladding, and overlay is believed to have caused the unique jagged maximum shear stress distribution in the cladding HAZ of Inconel 625 overlay. The magnitude of this thermal stress can reach the yield strength of the cladding at 900 °F (482 °C) service temperature, therefore, provides the driving force for the jagged cracking formation in the sensitized HAZ.

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Ha, Yoosung, Tohru Tobita, Hisashi Takamizawa, Satoshi Hanawa und Yutaka Nishiyama. „Fracture Toughness Evaluation of Heat-Affected Zone Under Weld Overlay Cladding in Reactor Pressure Vessel Steel“. In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84535.

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An evaluation of the fracture toughness of the heat-affected zone (HAZ), which is located under the weld overlay cladding of a reactor pressure vessel (RPV), was performed. Considering inhomogeneous microstructures of the HAZ, 0.4T-C(T) specimens were manufactured from the cladding strips locations, and Mini-C(T) specimens were fabricated from the distanced location as well as under the cladding. The reference temperature (To) of specimens that were aligned with the middle section of a cladding strip (HAZMCS) was ∼12°C higher than that of specimens that were aligned with cladding strips at the overlap (HAZOCS). To values of partial area in the HAZ were obtained using Mini-C(T) specimen. The To values obtained near the side of the cladding were ∼13°C higher than those away from the cladding. To values of HAZ for both 0.4T-C(T) and Mini-C(T) specimens were significantly lower than that of the base metal at a quarter thickness by 40°C–60°C. Compared to the literature data that indicated fracture toughness at the surface without overlay cladding and base metal of a quarter thickness in a pressure vessel plate, this study concluded that the welding thermal history showed no significant effect on the fracture toughness of the inner surface of RPV steel.

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Li, Xufeng, Kesheng Ou, Lei Wang, Jiong Zheng, Weijian Luo, Huasheng Hu, Ruwen Fu, Junjun Zhu und Pengan Zhu. „Case Study of the Surface Cracking of Austenite Stainless Steel Weld Overlay Cladding in Hydrogen Environment“. In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63960.

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Austenite stainless steel weld overlay cladding is widely used for the equipments working in pressurized hydrogen environment such as hydrogenation reactors. Surface cracking is a basic failure mode of the weld overlay cladding, and also a quite difficult problem for safety assessment and defect elimination. In this paper, two cases of surface cracking of austenite stainless steel weld overlay cladding are introduced. Firstly, the inspection results and cracking causes are analyzed in detail. Secondly, two kinds of treatment methods for the defects are introduced. Finally, some suggestions for inspection and assessment of surface cracking of weld overlay cladding are proposed.

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Katsuyama, Jinya, Hiroyuki Nishikawa, Makoto Udagawa, Mitsuyuki Nakamura und Kunio Onizawa. „Assessments of Residual Stress Due to Weld-Overlay Cladding and Structural Integrity of Reactor Pressure Vessel“. In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25541.

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Austenitic stainless steel is cladded on the inner surface of ferritic low alloy steel of reactor pressure vessels (RPVs) for protecting the vessel walls against the corrosion. After the manufacturing process of the RPVs including weld-overlay cladding and post-weld heat treatments (PWHT), the residual stress still remain in such dissimilar welds. The residual stresses generated within the cladding and base material were measured as-welded and PWHT conditions using the sectioning and deep-hole-drilling (DHD) techniques. Thermal-elastic-plastic-creep analyses considering the phase transformation in heat affected zone using finite element method were also performed to evaluate the weld residual stress produced by weld overlay cladding and PWHT. By comparing analytical results with those measured ones, it was shown that there was a good agreement of residual stress distribution within the cladding and base material. Tensile residual stress in cladding is mostly due to the difference between the thermal expansions of cladding and base materials. It was also shown that taking the phase transformation during welding into account is important to improve the accuracy of weld residual stress analysis. Using the calculated residual stress distribution, fracture mechanics analysis for a postulated flaw during pressurized thermal shock (PTS) events have been performed. The effect of weld residual stress on the structural integrity of RPV was evaluated through some case studies. The result indicates that consideration of weld residual stress produced by weld-overlay cladding and PWHT is important for assessing the structural integrity of RPVs.

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Udagawa, Makoto, Jinya Katsuyama und Kunio Onizawa. „Effects of Residual Stress by Weld Overlay Cladding and PWHT on the Structural Integrity of RPV During PTS“. In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26556.

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In order to assess the structural integrity of a reactor pressure vessel (RPV), it is assumed that a surface crack resides through the cladding at the inner surface of the vessel. It is, therefore, important to precisely evaluate stress intensity factor (SIF) under the residual stress field due to weld overlay cladding and post-weld heat treatment (PWHT). In this work, numerical simulation based on thermal-elastic-plastic-creep analysis using finite element method was performed to evaluate residual stress distribution near the cladding layer produced by weld overlay cladding and PWHT. The tensile residual stress of about 400 MPa occurs in the cladding at room temperature after the PWHT. The residual stress distributions under the normal operating conditions (system pressure and temperature) of RPV were also evaluated. The effect of residual stress and evaluation methods on SIF behavior for various crack size were studied under typical pressurized thermal shock (PTS) conditions such as small break loss of coolant accident (SBLOCA), main steam line break (MSLB) and large break loss of coolant accident (LBLOCA). It is clarified from comparison of this weld simulation with the other simple methods that SIF is affected by residual stress by weld overlay cladding and PWHT.

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Kogo, Bridget, Bin Wang, Luiz Wrobel und Mahmoud Chizari. „Assessment of Weld Overlays in Cladded Piping Systems With Varied Thicknesses“. In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96348.

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Abstract This paper continues the research previously done by authors on computer simulation of the dissimilar welded joints with varying clad thicknesses using numerical methods. For different cladding thicknesses comprising of stainless steel and mild steel, stress curves have been generated. The welding of the two dissimilar materials has been carried out in-house with the aid of a tungsten arc weld with dynamic measurement of the temperature profile in vicinity of the welding track using high temperature thermocouples. Comparison of the experimentally measured stresses from literature versus the simulation results shows close agreement.

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Greig, N. Andrew, und Mike Ludwig. „Qualifying the Reciprocating Wire Feed Gas Metal Arc Welding (RWF-GMAW) Process for Applying Weld Overlays of Corrosion-resistant Cladding on Steel Marine Propulsion Shafts“. In SNAME 14th Propeller and Shafting Symposium. SNAME, 2015. http://dx.doi.org/10.5957/pss-2015-010.

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Marine propulsion shafts typically are composites consisting of a strong, tough (often hollow) steel, bearing-surface sleeves, and corrosion-resistant cladding. Cladding alloys include Copper-Nickel alloys, austenitic “stainless steel” alloys, and Nickelbased Alloy 625. Cladding alloy weld metals are expensive as are the production costs of clad welding, weld inspection and rework. This paper describes collaborative efforts of a commercial Shaft Repair Facility (SRF) and a welding machine supplier to develop technical data supporting cleaner, more efficient and adaptable processes and equipment for corrosion-resistant alloy cladding. Reciprocating Wire Feed-Gas Metal Arc Welding (RWF-GMAW), specifically the proprietary Cold Metal Transfer (CMT) process, is presented a procedure-of-choice for corrosion-resistant weld cladding of Alloy 625 and of 300-series alloys on steel machinery.

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Zumpano, Petrônio, Alexandre G. Garmbis, Eduardo V. Oazen, Luis Guilherme T. S. Leite und Rafael N. Silva. „Integrity of Weld Overlay of Flexible Joints and Lined Pipe“. In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42193.

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This paper describes different alternatives to be adopted to assess the integrity of weld overlays of flexible joints and lined pipes in offshore pipeline and riser projects. Protective layers are adopted as an interesting alternative to full thickness corrosion resistant alloys due to the possibility to adopt carbon steel as base material in order to reduce overall material costs. UNS N06625 (alloy 625) is generally selected for internal layers, such as weld overlay steels, lined pipes or clad pipes because of its sulfide stress cracking (SSC) resistance and outstanding weldability. However, unless the long-term integrity of the cladding or overlay as a protective layer can be demonstrated under the intended service conditions, the base material shall also be resistant against sulfide stress corrosion cracking. Due to low resistance of carbon steel to corrosion fatigue in the presence of contaminants in fluid content, the rupture of thickness of CRA (Corrosion Resistant Alloy) layer becomes a failure mode. An Engineering Critical Assessment (ECA) shall be performed in order to assess if circumferential planar flaws in weld overlay regions will not propagate through the CRA layer, thus exposing the base material, when submitted to critical cyclic loads during the service life. Such analysis would involve fatigue crack growth simulation and surface interaction of full circumferential embedded defects to determine the maximum weld overlay pass height to be limited by machining. This limited height of machined layers should guarantee that a full circumferential flaw will withstand the operational fatigue life. However, this is a very time consuming manufacturing process and would implicate additional concerns for long extensions due to out of straightness and out of roundness. Alternatively, the ECA results may be used to determine the flaw acceptance criteria and required probability of detection of volumetric non-destructive testing. Recent developments in ultrasonic inspection were successfully adopted and represent a better solution for alloy 625 weld overlay in terms of project scheduling and manufacturing costs. Radiographic testing may also be used provided it meets the required sensitivity, in terms of image quality indicators (IQI). Anyway, validation tests shall be performed to demonstrate adequate reliability to detect the minimum required flaw height.

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Hackel, Lloyd A., und Jon E. Rankin. „Lifetime Enhancement of Propulsion Shafts Against Corrosion-Fatigue by Laser Peening“. In SNAME 15th Propeller and Shafting Symposium. SNAME, 2018. http://dx.doi.org/10.5957/pss-2018-01.

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This paper reports substantially enhanced fatigue and corrosion-fatigue lifetimes of propulsion shaft materials, 23284A steel and 23284A steel with In625 weld overlay cladding, as a result of shot or laser peening. Glass reinforced plastic (GRP) coatings and Inconel claddings are used to protect shafts against general corrosion and corrosion pitting. However salt water leakage penetrating under a GRP can actually enhance pitting leading to crack initiation and growth. Fatigue coupons, untreated and with shot or laser peening were tested, including with simultaneous salt water immersion. Controlled corrosion of the surfaces was simulated with electric discharge machining (EDM) of deep pits enabling evaluation of fatigue and corrosion-fatigue lifetimes. Results specifically show high energy laser peening (HELP) to be a superior solution, improving corrosion-fatigue resistance of shaft and cladding metal, reducing the potential for corrosion pits to initiate fatigue cracks and dramatically slowing crack growth rates. At a heavy loading of 110% of the 23284A steel yield stress and with 0.020 inch deep pits, laser peening increased fatigue life of the steel by 1370% and by 350% in the corrosion-fatigue testing.

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Epelbaum, Greg, Eric Hanson und Michael Seitz. „New Generation of Tube Surface Treatments Help Improve EFW Boiler Reliability“. In 18th Annual North American Waste-to-Energy Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/nawtec18-3580.

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Surface treatments, such as weld overlays, thermal sprays, laser claddings and fused coatings have been used for many years to protect boiler tubes operating in corrosive and erosive conditions. Several variables are typically identified that influence the choice of the technology selected, and the materials used to upgrade the boiler elements. Specifically, operating conditions such as corrosive species present, tube and gas temperatures, and the presence of erosive processes such as fly ash impingement and soot blowing significantly influence the severity of the wastage mechanisms. Given the many options available, and the uncertainty in determining reliable operating data, most selections need to be based on a “fit for all” solution. Case studies for applications of protective coatings in severe applications are useful to indicate relative performance of each system. From such results, limitations and some indication of performance can be established. As an example, AmStar cladding was field applied for EfW boiler water walls protection at 4 EfW plants. A number of superheater tube samples, cladded in the AmStar shop, were installed at another 4 EfW plants. The AmStar 888® cladding material is a development specifically geared to environments that may see erosion, corrosion, or a combination of both mechanisms. The material is a Nickel Chrome alloy, with carbide and boride additions. The coating is applied (field or shop) using a high velocity spray system, and requires no post treatment. The material is also easily repaired if defects occur in the future. The presented field trials at EfW plants have brought very positive results for all carbon steel water wall applications and have shown some good potential for salvaging old poor quality Inconel weld overlay by spraying AmStar 888® cladding over it. The superheater tube trials are more complex due to the variety of boiler designs which may significantly affect environmental variables. Not surprisingly, these trials have shown a range of results so far: from very good at one plant to not satisfactory at another. Testing is ongoing, so more results will be coming. Although such field tests do not provide quantitative results, they do provide comparative performance guidelines for generally aggressive boiler environments. This data is very useful to both design and maintenance engineers, who are often faced with limited options.

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Berichte der Organisationen zum Thema "Weld overaly cladding"

Haggag, F., W. Corwin und R. Nanstad. Irradiation effects on strength and toughness of three-wire series- arc stainless steel weld overlay cladding. Office of Scientific and Technical Information (OSTI), Februar 1990. http://dx.doi.org/10.2172/7172259.

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Haggag, F. M., und R. K. Nanstad. Effects of thermal aging and neutron irradiation on the mechanical properties of three-wire stainless steel weld overlay cladding. Office of Scientific and Technical Information (OSTI), Mai 1997. http://dx.doi.org/10.2172/477676.

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