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Статті в журналах з теми "High quality steel"

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Surinlert, Piyaporn, and Akkawat Ruammaitree. "Increasing Surface Hardness of S304 Stainless Steel by High Quality Graphene Grown by Chemical Vapor Deposition." Solid State Phenomena 302 (April 2020): 79–84. http://dx.doi.org/10.4028/www.scientific.net/ssp.302.79.

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Stainless steel is widely utilized due to its higher corrosion resistance and gloss than ordinary steels. However, the applications of stainless steel are still limited because of its low surface hardness. Graphene is a superb material, which has an intrinsic strength of 130 GPa. In this report, the growth of high quality graphene on S304 stainless steel by chemical vapor deposition using acetylene gas as a carbon source is demonstrated. The surface hardness of stainless steel after growing high quality graphene is investigated by nanoindentation technique. High quality graphene can increase t
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Yan, Wei, Weiqing Chen, and Jing Li. "Quality Control of High Carbon Steel for Steel Wires." Materials 12, no. 6 (2019): 846. http://dx.doi.org/10.3390/ma12060846.

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High-carbon steel wires used for bridge cables, tire reinforcement materials and cutting materials of silicon ingot for photovoltaic industry require an extremely fine diameter and high strength. Poor control of centerline segregation, inclusion and microstructure of high-carbon steel is detrimental to drawability and subsequent fatigue performance. Prof. Weiqing Chen’s group at the University of Science and Technology Beijing (USTB) has been investigating the quality control of high-carbon steel through a low-cost one-stage hot rolling process since 2000. This paper reviews the main research
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Imamović, Aida, Omer Kablar, Mirsada Oruč, Vedina Purić-Selimović, and Lamija Sušić. "THE INFLUENCE OF MANGANESE ON THE TENSILE STRENGTH OF HIGH CARBON STEEL C66D." Journal of Sustainable Technologies and Materials 4, no. 6 (2024): 29–34. http://dx.doi.org/10.57131/jstm.2024.6.5.

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<p>Modern steel production cannot be imagined without manganese, because almost all steels contain manganese.<br />In this paper, we present the impact of manganese on the tensile strength values of high-carbon steel. <br />This paper presents an improvement in the quality of wire rolling with control of manganese content in steel and the value of C-equivalent, in industrial conditions, which is of particular importance in the production of this quality of steel. <br />For the presented quality of rolled wire made of high-carbon steel, it
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Wu, Hai Hong, Bi Jun Luo, Chun Juan Gao, Yan An Zhang, Qi Zhang, and Xi Ping Huang. "Research Progress of High Quality Silicon Steel Magnesium Oxide." Applied Mechanics and Materials 556-562 (May 2014): 181–84. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.181.

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Silicon steel magnesium oxide is a coating material used for preparing oriented silicon steel. In this paper, The preparation methods of silicon steel magnesium oxide and research progress of high quality silicon steel magnesium oxide preparation technology were introduced. The use of abundant brine resources in the preparation of silicon steel magnesium oxide was prospected.
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Li, Yang, Jing Wang, Jiaquan Zhang, Changgui Cheng, and Zhi Zeng. "Deformation and Structure Difference of Steel Droplets during Initial Solidification." High Temperature Materials and Processes 36, no. 4 (2017): 347–57. http://dx.doi.org/10.1515/htmp-2016-0113.

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AbstractThe surface quality of slabs is closely related with the initial solidification at very first seconds of molten steel near meniscus in mold during continuous casting. The solidification, structure, and free deformation for given steels have been investigated in droplet experiments by aid of Laser Scanning Confocal Microscope. It is observed that the appearances of solidified shells for high carbon steels and some hyper-peritectic steels with high carbon content show lamellar, while that for other steels show spherical. Convex is formed along the chilling direction for most steels, besi
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G., Nallaiya, and S. Sekar K. "Study of Machining on High Carbon High Chromium Die Steel Using Wire Cut EDM under Various Conditions." International Journal of Trend in Scientific Research and Development 2, no. 4 (2018): 2135–40. https://doi.org/10.31142/ijtsrd14581.

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Tool steel are high quality steels made to close compositional and physical tolerances, they are used to make tools for cuttings, forming or shaping material into a part or component adapted to define use. There are various types tool steels are available in this we decided to select D2 material i.e. high carbon High chromium die steel. Using wire cut EDM machine we did machining on D2 steel under various condition ordinary conditions, After Hardening Conditions and after Hardening and tempering Conditions The process parameters viz. Wire diameter, Wire feed rate and Current will be kept const
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Mauder, Tomas, and Josef Stetina. "High Quality Steel Casting by Using Advanced Mathematical Methods." Metals 8, no. 12 (2018): 1019. http://dx.doi.org/10.3390/met8121019.

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The main concept of this paper is to utilize advanced numerical modelling techniques with self-regulation algorithm in order to reach optimal casting conditions for real-time casting control. Fully 3-D macro-solidification model for the continuous casting (CC) process and an original fuzzy logic regulator are combined. The fuzzy logic (FL) regulator reacts on signals from two data inputs, the temperature field and the historical steel quality database. FL adjust the cooling intensity as a function of casting speed and pouring temperature. This approach was originally designed for the special h
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Kaščák, Ľuboš, and Emil Spišák. "Effect of Welding Parameters on the Quality of Spot Welds Combining AHSS Steel and HSLA Steel." Key Engineering Materials 586 (September 2013): 162–65. http://dx.doi.org/10.4028/www.scientific.net/kem.586.162.

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The resistance spot welding of dissimilar materials is generally more challenging than that of similar materials due to differences in the physical, chemical and mechanical properties of the base metals. Advanced high strength steels and high strength low alloy steels are utilized in automotive industry to reduce weight of the vehicle body and consequently lowering the fuel consumption to achieve the lowest possible fuel consumption, high active and passive safety of passengers while decreasing the amount of emission. The influence of the primary welding parameters, especially welding current,
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Buryak, T. N., I. A. Katsaj, V. G. Kuznetsov, A. I. Novikov, A. A. Taranenko, and N. V. Yaroshenko. "Technology of manufacturing high-quality welded tubes from corrosion-resistant steel in Ukraine." Paton Welding Journal 2015, no. 2 (2015): 34–39. http://dx.doi.org/10.15407/tpwj2015.02.07.

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Dekkers, Rob, Nedeljka Jokanovic, Anton Rombout, Bart Blanpain, and Patrick Wollants. "Steel Cleanliness during Secondary Metallurgy of High-grade Quality Electric Steels." steel research international 76, no. 7 (2005): 475–80. http://dx.doi.org/10.1002/srin.200506042.

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Дисертації з теми "High quality steel"

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Fahlström, Karl. "Laser welding of boron steels for light-weight vehicle applications." Licentiate thesis, Högskolan Väst, Forskningsmiljön produktionsteknik(PTW), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-7263.

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Laser beam welding has gained a significant interest during the last two decades. The suitability of the process for high volume production has the possibility to give a strong advantage compared to several other welding methods. However, it is important to have the process in full control since various quality issues may otherwise occur. During laser welding of boron steels quality issues such as imperfections, changes in local and global geometry as well as strength reduction can occur. The aspects that need to be considered are strongly depending on alloy content, process parameters etc. Th
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Кайдаш, Д. В. "Дослідження впливу термічної обробки на властивості особливо високоякісних сталей". Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86665.

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Актуальність роботи пов’язана з дослідженням впливу термічної обробки на корозійну стійкість, пластичні характеристики і ударну в'язкість особливо високоякісних сталей, зокрема сталь виготовлену електрошлаковим переплавом 25Х17Н2Б-Ш, застосовувану для виготовлення складно навантажених деталей в судновому, атомному машинобудуванні, які сприймають значні різноспрямовані динамічні навантаження, наприклад, кріплення, та працюють в агресивних середовищах. В результаті цього підвищується строк експлуатації даного виробу, що значно може скоротити витрати в подальшому на його ремонти або заміну. Над
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Kardes, Sever Nimet. "Investigation of Lubrication and Springback in Forming of Draw Quality and Advanced High Strength Steels." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1332117974.

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Stenberg, Thomas. "Fatigue properties of cut and welded high strength steels : Quality aspects in design and production." Doctoral thesis, KTH, Lättkonstruktioner, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188225.

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This doctoral thesis concerns fatigue of welded structures. Welding is one of the world’s most common joining methods and it is frequently used in several structural applications in many fields. Some examples are construction vehicles, loader cranes, trucks, busses, forestry and agricultural machines, bridges and ships. Since these structures are subjected to repeated loading, fatigue is the most common cause of failure. A novel numerical algorithm has been developed which assesses the welded surface and calculates and quantifies weld quality parameters and the presence of defects which are cr
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Tunková, Martina. "Městské lázně." Master's thesis, Vysoké učení technické v Brně. Fakulta architektury, 2010. http://www.nusl.cz/ntk/nusl-215713.

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林豪. "Study on managing the engineering quality and quality cost under the most advantageous tender:lllustrated by steel frame structure in high-rise steek buildings." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/70290628504340502418.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>90<br>ABSTRACT This master’s thesis is a study on managing the engineering quality and quality cost under the most advantageous tender with an illustration of steel frame structures in high-rise buildings. The topics of discussion include the historical process in the awarding of contracts, the lowest tender, the reasonable tender and the most advantageous tender (the advantages and disadvantages of these three types of awarding of contracts), the mechanism for the most advantageous tender to assess the best bidder among contractors, construction quality a
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Fang, Kai-Liang, and 方凱亮. "A Study 0n the Construction Quality Control of the Steel- Column Transition Joint in SRC- High -Buildings." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/75371712051852075861.

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碩士<br>國立成功大學<br>建築學系碩博士班<br>93<br>Undergoing a painful experience of the earthquake 921 in Taiwan, it was shown that the building structure of SRC is better than one of RC for considering seismic proof and green building. Therefore, SRC is increasingly applied for more structuring buildings in Taiwan. However, due to the shortage of skilled SRC engineers and technicians considerable amount of SRC high buildings are of inappropriate designs and unsafe in constructions. Thus, the quality control of SRC structure building is a very important issue for people’s property and their lives in Taiwan.
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Lo, Shui-Hsin, and 羅水興. "Research of Introducing the Quality Management System of Automobile Producing—Task the Spot Welding Quality of High Strength Steel Sheets for Automobile AsExample." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/76207929020989850012.

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碩士<br>中原大學<br>企業管理研究所<br>97<br>To global automakers, steel sheets’ higher ability to endure crash is needed to increase the quality and security of the automobiles. Meanwhile, to respond to the policy of diminishing CO2 emission and to reduce gasoline consumption by lightening the body of cars, applying high strength steel sheets to panel beating has become a trend. The lightest auto body research focuses on the new materials, malleability, and joining skills. Because there are still many challenges in spot quality and skills that should be conquered, spot producing process is the joining skil
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Mohanty, Sankalp. "Microdrilling of Biocompatible Materials." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10560.

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This research studies microdrilling of biocompatible materials including commercially pure titanium, 316L stainless steel, polyether ether ketone (PEEK) and aluminum 6061-T6. A microdrilling technique that uses progressive pecking and micromist coolant is developed that allows drilling of 127 micrometers diameter microholes with an aspect ratio of 10:1. The drilling parameters, dominant wear pattern, hole positioning accuracy and effect of AlTiN tool coating are experimentally determined. The experimental data trend agrees with classical Taylor's machining equation. Despite of fragile and long
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Книги з теми "High quality steel"

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Applications of the Latest Technological Innovations and Processes for the Production of Iron and Steel and High Quality Product-Mix Conference (1992 Chicago, Ill.). Production of iron, steel, and high quality product mix: Latest technological innovations and processes. ASM International, 1992.

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Ginzburg, Vladimir B. High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640.

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Ginzburg, Vladimir B. High-Quality Steel Rolling: Theory and Practice. Taylor & Francis Group, 1993.

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Ginzburg, Vladimir B. High-Quality Steel Rolling: Theory and Practice. Taylor & Francis Group, 1993.

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High-quality steel rolling: Theory and practice. Marcel Dekker, 1993.

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Din Handbook 405: Iron and Steel/Quality Standards 5 - Stainless and Other High-Alloy Steels. Beuth Verlag Gmbh, 1998.

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Simmons, Benjamin. Max Steel Coloring Book: Coloring Book for Kids and Adults, High Quality Coloring Book. Independently Published, 2019.

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Yoichi, Kojima. Power Puzzle Book: Fun Adorable Sudoku Ninja Word Search Steel Maze High-Quality Letter Tiles Activities Books for Adults, Tweens. Independently Published, 2022.

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Öztorun, Namık Kemal, and Ezgi Öztorun Köroğlu. Steel Structures I. İstanbul University–Cerrahpaşa Press Serial Number: 88, 2025. https://doi.org/10.5152/4100.

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This book provides comprehensive information essential for both the design of new steel structures and the analysis of existing ones. It covers the fundamental principles of design, procedures, historical context, specifications, and the Turkish standard TS 498 for design loads. It also addresses probability and factor of safety, the application of steel in structures, the mechanical properties of structural steels, and an introductory comments on TS 498. The book covers fundamental concepts including the behavior of tension and compression members, methods for their analysis, and details rega
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Nijhawan, B. R. Production of Iron, Steel, and High-Quality Product Mix: Latest Technological Innovations and Processes : Proceedings of the Applications of the Lat (Conference proceedings). Asm Intl, 1992.

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Частини книг з теми "High quality steel"

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"Quality level competing products Quality level." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-15.

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"Standardization and Quality Requirements." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-11.

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"DEFINITIONS25." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-10.

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"PulsecounterPulseCambertercurvaturecouncomputer." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-100.

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"SpindleEdger _ _ _ , _ _ housing." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-101.

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"C H A P T E R 1 7." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-102.

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"w produced by the width gage A are fed forward into a process." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-103.

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"r -· ·." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-104.

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"AUTOMATWIDTHANDPLANVIEW." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-105.

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"Mill centerline." In High-Quality Steel Rolling. CRC Press, 1993. http://dx.doi.org/10.1201/9781466564640-106.

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Тези доповідей конференцій з теми "High quality steel"

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Panda, B., S. K. Verma, and V. Agarwala. "Corrosion-Wear Characterization of M50 Bearing Quality Steel." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88376.

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Abstract Corrosion-wear characteristics of M50 bearing quality steel have been studied using a laboratory designed apparatus. The apparatus is capable of providing electrochemical measurements under loaded dynamic rolling and rolling-sliding motion. Using this equipment, corrosion current and open circuit potential were measured and the polarization curves were drawn for the M50 samples in electrolytes containing various inhibitors and lubricants. Results of the study indicated that the tenacity and permeability of the passive layer is the key factor in determining the resistance to corrosion
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Goldsteinas, Aymeric, and Craig Moller. "Bright Tempering: Achieving High Quality Appearance During Tempering." In HT 2013, edited by B. Lynn Ferguson. ASM International, 2013. https://doi.org/10.31399/asm.cp.ht2013p0055.

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Abstract Achieving optimal cleanliness and efficiency during tempering processes presents significant challenges, particularly regarding the prevention of surface discoloration. Through collaborative customer partnerships, we have conducted comprehensive evaluations of tempering concerns and collected extensive data that has led to innovative software developments and equipment enhancements, substantially expanding industry capabilities. This paper presents a detailed analysis of critical factors affecting material performance during tempering processes. We demonstrate methods for reducing cyc
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Ponikvar, Philip E. "ACHIEVING BOTH HIGH QUALITY AND HIGH PRODUCTION RATES ON COMBINATION CASTING MACHINES AT MAANSHAN, P.R.C AND STEEL DYNAMICS INC., USA." In 36º Seminário de Fusão, Refino e Solidificação dos Metais - Internacional. Editora Blucher, 2005. https://doi.org/10.5151/2594-5300-2004-13830-0016.

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Strandmyr, Øystein, and Odd Hagerup. "Field Experience with Stainless Steel Materials in Seawater Systems." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98707.

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Abstract Stainless steels are an important group of materials for seawater systems. This group of materials, including high alloyed austenitic and superduplex type materials, was primarily introduced with the aim to reduce maintenance costs involved with materials as carbon steel with internal linings and coatings. However, on some offshore platforms the leak frequency in seawater stainless steel piping systems has been high resulting in unacceptable maintenance costs. This study has evaluated the field experience with stainless steel materials in seawater systems at three company operated off
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Duran, Bernardo. "Inspecting Hot-Dip Galvanized Steel." In SSPC 2016 Greencoat. SSPC, 2016. https://doi.org/10.5006/s2016-00019.

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Abstract Engineers, architects, DOTs and other specifiers use hot-dip galvanizing to provide corrosion protection to steel and iron in many industries, including transportation and highway, parking garages, bridges, structural, agricultural, petrochemical, and original equipment manufacturing. To ensure continued corrosion protection and structural integrity in these industries, it is necessary to properly inspect the galvanizing. This paper provides an introduction to commonly used standards and inspection criteria for ensuring high quality galvanized coatings.
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Videm, K., and A. Dugstad. "Effect of Flow Rate, pH, Fe2+ Concentration and Steel Quality on the CO2 Corrosion of Carbon Steels." In CORROSION 1987. NACE International, 1987. https://doi.org/10.5006/c1987-87042.

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Abstract A three year project for the study of CO2 corrosion of carbon steels was sponsored by five oil companies. Corrosion takes place without an FeCO3 corrosion film if the Fe2+ ions in the water is in the solubility range. The corrosion rate was found to increase proportionally with CO2 partial pressures to a power of about 0.7. A new feature revealed is that the amount of Fe2+ corrosion products in the water is equally important as the CO2 level. Low concentrations of Fe2+ and high CO2 levels can lead to rapid corrosion. A surprising observation is that carbon manganese steels with about
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Erkmen, Bulent. "Seismic Behaviour of Multistory Prefabricated Modular Steel Buildings in High Seismic Regions." In IABSE Symposium, Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches. International Association for Bridge and Structural Engineering (IABSE), 2025. https://doi.org/10.2749/tokyo.2025.1811.

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&lt;p&gt;Modular steel building systems provide effective solutions for temporary and permanent accommodation, particularly in critical situations such as post-earthquake scenarios. These systems address urgent needs for rapid construction while maintaining high-quality standards, making them essential in modern construction. By staggering multiple master modular units both horizontally and vertically, diverse architectural layouts are created to meet specific requirements. This study evaluates the seismic performance of a prototype five story modular building using 3D finite element analysis
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Eliaz, Noam, Elizabeta Kossoy, and Gil Shemesh. "The Use of Secondary Ion Mass Spectrometry (SIMS) in Quality Control of Electroplated and Baked High-Strength Steels." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11290.

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Abstract Hydrogen absorption during electroplating might result in hydrogen embrittlement (HE) of the substrate metal. Heat treatment ("baking") is commonly employed "in order to render the normally mobile hydrogen immobile". The objective of this work was to develop a sensitive analytical procedure using dynamic secondary ion mass spectrometry (SIMS) that would allow identification of improper baking during quality control. In all non-baked samples of AISI 4340 steel coated with cadmium, an increase in the hydrogen signal was found at the Cd/steel interface. In baked samples, either a peak wa
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9

Baek, K. K., M. K. Chung, H. I. Lee, C. H. Lee, and C. S. Shin. "Effect of Retaining Preconstruction Primer (PCP) on the Quality of High Performance Protective Coatings Systems." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05003.

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Abstract In construction of new ships and large steel bridges in Korea, pre-construction primers (PCP), also known as shop primer, are routinely used and retained as an integral part of the protective coating system. Retention of PCP’s can significantly reduce building schedule and cost. Retaining PCP through the so-called “sweep blasting” procedure eliminates or minimizes the necessity of a second blast operation, thus shortening overall schedule as well as reducing labor cost and hazardous waste disposal cost. This study evaluates the feasibility of retaining PCP as the part of primer for hi
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10

Tiong, Desmond Koh-Kiong, John M. Walsh, and J. H. (Jim) McHaney. "Technical Challenges in Using Super Duplex Stainless Steel." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06147.

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Abstract Super Duplex Stainless Steel (SDSS) was selected, fabricated and installed for the high pressure, deoxygenated seawater sections of Mars Waterflood Project (MWP). Several factors led to the selection of this material including corrosion resistance in seawater, relatively high strength and the relative uncertainty in the reliability of the waterflood oxygen control system. Significant technical and commercial challenges were faced because (1) welding of SDSS is more complex than welding of carbon and low alloy steels, which are the primary experience of most local fabricators, and (2)
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Звіти організацій з теми "High quality steel"

1

Wong, Ka Ying, Sakshi Pandey, Veronica Ern Hui Wee, and KE Seetha Ram. Planning and Capacity Building for High-Speed Rail Development in India: Five Key Lessons. Asian Development Bank Institute, 2023. http://dx.doi.org/10.56506/pgrm7468.

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India’s urbanization rate has increased from 26% in 1991 to 35% in 2021, and it is expected to reach 41% by 2030 (World Bank 2022). In response to this, as the backbone of its growing economy, the country’s infrastructure development, particularly transportation development, has been heavily emphasized. The railway sector will see an investment of $715.41 billion by 2030. Along with a series of supporting government policies, an opportunity to expand the high-speed rail (HSR) network has been presented in India. From the viewpoint of the government, HSR is an effective tool to address the surg
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2

Morrison, K. G. PR-214-9109-R01 Application of Pulsed Gas Metal ARC Welding to Pipeline Construction. Pipeline Research Council International, Inc. (PRCI), 1992. http://dx.doi.org/10.55274/r0011832.

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Evaluates the use of high strength micro-alloyed steels in pipeline construction for the potential savings in material, materials handling, and welding construction costs. Pulsed- Gas Metal Arc Welding (P-GMAW) is considered the most appropriate welding process to join these materials since high quality, low hydrogen welds with excellent mechanical properties are possible.
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3

Groeneveld. L51663 Seam-Weld Quality of Modern ERW-HFI Pipe. Pipeline Research Council International, Inc. (PRCI), 1991. http://dx.doi.org/10.55274/r0010609.

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Major advances have been made in recent years in the production of electric resistance-welded (ERW) and high-frequency induction (HFI)-welded line pipe, particularly in the area of automated process control procedures designed to ensure uniform, high-quality seam welds. ERW/HFI pipe produced from microalloyed, controlled-rolled steels can be obtained in larger diameters and heavier wall thicknesses than were formerly available, and with reportedly excellent seam-weld quality as well as pipe body properties. Thus, it is feasible to consider the application of ERW/HFI pipe in a number of additio
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4

Begg, Darren. PR-214-124506-R02 Toughness and Strength of Sub-Arc Double Jointed High Strength Pipe. Pipeline Research Council International, Inc. (PRCI), 2017. http://dx.doi.org/10.55274/r0011418.

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Current design of pipelines calls for overmatching weld metal tensile strength, forcing deformation to occur in the base material and not in the weld. If straining of the weld metal were to occur, higher levels of weld metal toughness would be required to prevent fracture initiation from pre-existing defects. There are three known issues related to the Submerged Arc Welding (SAW) double jointing of pipeline steels: - Consistently achieving weld metal strength and toughness requirements. - Heat affected zone (HAZ) softening of the base material. - Lack of an accepted test protocol for the entir
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5

Weeks, Timothy "Dash." DTPH56-13-X-000013 Modern High-Toughness Steels for Fracture Propagation and Arrest Assessment-Phase II. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0012037.

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NIST work developed processes to identify the stress/strain/crack velocity conditions for unstable high-rate ductile crack propagation found in a full-scale pipeline burst test and duplicate those conditions in a medium-scale test. With modeling to validate conditions and assumptions used in reducing the scale of the tests. A medium-scale test to elucidate material property data necessary to qualify high-strength high-toughness steels based on the correlation to large-scale tests. Parametric determination of the material properties governing fracture propagation or arrest-ability was developed
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6

Dodd, Hope, David Bowles, John Cribbs, Jeffrey Williams, Cameron Cheri, and Tani Hubbard. Aquatic community monitoring at Herbert Hoover National Historic Site, 2008?2017. National Park Service, 2024. http://dx.doi.org/10.36967/2303263.

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Land use changes that degrade water quality and stream habitat can negatively impact aquatic communities. Monitoring trends in aquatic community composition and habitat conditions is a robust way to assess stream integrity and health. Herbert Hoover National Historic Site (NHS) is in eastern Iowa where dominant land use consists of row-crop and grassland agriculture. A portion of an unnamed tributary of the West Branch of Wapsinonoc Creek, known as Hoover Creek, flows through the park. In 2008, the Heartland Inventory and Monitoring Network (Heartland Network) of the National Park Service (NPS
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7

Raikow, David, Mark Wasser, Amanda McCutcheon, and Anne Farahi. Trends in water quality of Waikolu Stream, Kalaupapa National Historical Park, Moloka?i, Hawaii, 2007?2017. National Park Service, 2024. http://dx.doi.org/10.36967/2302153.

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Water quality was monitored in Waikolu Stream, Kalaupapa National Historical Park, Moloka?i, Hawa?i from 2007-2017. Water was collected for nutrient analyses and a sonde equipped with multiple probes was used to measure water quality parameters. The sampling regime was based on a split-panel of permanently established or ?fixed? sites sampled during each sampling effort, and ?temporary? sites of randomly assigned locations, for each sampling effort. Results included: ? NO-3 + NO-2 regularly exceeded state water quality criteria. ? TP exceeded state water quality criteria once out of three quar
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8

Raymond, Kara, Laura Palacios, Cheryl McIntyre, and Evan Gwilliam. Status of climate and water resources at Saguaro National Park: Water year 2019. Edited by Alice Wondrak Biel. National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2288717.

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Climate and hydrology are major drivers of ecosystems. They dramatically shape ecosystem structure and function, particularly in arid and semi-arid ecosystems. Understanding changes in climate, groundwater, and water quality and quantity is central to assessing the condition of park biota and key cultural resources. The Sonoran Desert Network collects data on climate, groundwater, and surface water at 11 National Park Service units in south-ern Arizona and New Mexico. This report provides an integrated look at climate, groundwater, and springs conditions at Saguaro National Park (NP) during wa
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9

RESEARCH PROGRESS ON FATIGUE PROPERTIES OF THE HIGHPERFORMANCE STEEL AND CONNECTION FORMS. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.196.

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This paper reviews the current research status of fatigue performance of high-strength steels, introduces the basic theory of fatigue life and current design methods, the fatigue test data of a large number of high-strength steels are statistically collected, and the fatigue properties of high-strength steel base material and different connection structures are analyzed and evaluated. The research results show that high-strength steels with yield strength greater than 420MPa show better fatigue resistance, and the fatigue strength is significantly higher than the calculated value. The design c
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10

L51744 Quality Assurance of MSS SP-75 Fittings. Pipeline Research Council International, Inc. (PRCI), 1996. http://dx.doi.org/10.55274/r0010123.

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Анотація:
Fittings (elbows, tees, caps, and reducers) are the most common components used in pipelines that are typically furnished in a heat-treated condition, such as normalized, normalized and tempered, or quenched and tempered. Recent industry experience has shown that heat-treated pipeline components, particularly high yield strength fittings, have been produced using different manufacturing processes, various starting materials, and several methods of testing the finished products. In addition, serious The objective of this study was to establish guidelines that could be used to predict the proper
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