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Готові списки джерел за темами / Especially high quality steel / Статті в журналах

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Статті в журналах з теми "Especially high quality steel"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

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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2

Ferreyra, E., and L. E. Murr. "Dislocation Substructure Contributions to the Tonal Qualities of the Caribbean Steel Drum - A TEM Study." Microscopy and Microanalysis 5, S2 (1999): 856–57. http://dx.doi.org/10.1017/s1431927600017608.

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Deformation substructures, especially dislocations, play an important role in the fabrication of the Caribbean steel drum and experimental evidence also suggests dislocations play a crucial role in the harmonic tuning and related musical qualities as well. In this study, we have examined and compared the dislocation substructures in high-quality, low-carbon (0.04-0.06 weight percent carbon) steel drum heads as manufactured, and sections cut from variously deformed (10% to 50% reduction) drum head sections, including those patterned with musical notes and heat treated; utilizing TEM.We have rec

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3

Başyiğit, Aziz, and Mustafa Murat. "The Effects of TIG Welding Rod Compositions on Microstructural and Mechanical Properties of Dissimilar AISI 304L and 420 Stainless Steel Welds." Metals 8, no. 11 (2018): 972. http://dx.doi.org/10.3390/met8110972.

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The usage of AISI/SAE 304L austenitic and 420 martensitic stainless steels is receiving greater interest especially in the defence and navy industries. 304L stainless steels exhibit excellent resistance to oxidizing media, while martensitic 420 alloy provides high strength values besides satisfactory corrosion properties at ambient atmospheres. In this work; 420 quality martensitic stainless steel is TIG (Tungsten Inert Gas) welded with 304L quality low carbon austenitic stainless steel plates. As filler metal dominantly determines the weld metals chemical compositions and final microstructure

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4

Suarez, Lucia, Juergen Schneider, and Yvan Houbaert. "Effect of Si on High-Temperature Oxidation of Steel during Hot Rolling." Defect and Diffusion Forum 273-276 (February 2008): 655–60. http://dx.doi.org/10.4028/www.scientific.net/ddf.273-276.655.

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An oxide scale layer always forms at the strip surface during the hot rolling process. As a consequence, de-scaling and pickling operations must be performed prior or after hot rolling. Many surface defects caused by hot rolling are related to oxidation in the reheating furnace. One of these is the melting of eutectic FeO/Fe2SiO4 during reheating over 1170°C giving as a result red scale defects in Si-added steel. On the other hand, steel strip surface oxidation during hot rolling causes an industrial and environmental problem: secondary oxide is removed after roughing, but tertiary oxide scale

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5

Ah-lung, Guillaume, Ayyoube Barchid, Brahim Boubeker, et al. "Effects of Melting/Casting and Thermal Treatment Surrounding Gas Phase Composition on the Properties of a Low-Alloyed Steel." Metals 14, no. 12 (2024): 1317. http://dx.doi.org/10.3390/met14121317.

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This study aims to provide insights into the experimental conditions used during the melting/casting process and subsequent thermal treatments of low-alloy steels, particularly regarding recycled scrap metals. As sustainable practices in metallurgy gain importance, optimizing scrap metal recycling is crucial for producing steel grades with desired chemical compositions, microstructures, and physical properties. Understanding these conditions is vital for enhancing the efficiency and quality of steel production from recycled materials. This study emphasizes the critical role of specific experim

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6

Jansto, Steven G. "High Quality TMCP Production and Metallurgy of Niobium Bearing Steels." Materials Science Forum 879 (November 2016): 820–25. http://dx.doi.org/10.4028/www.scientific.net/msf.879.820.

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The technological and metallurgical advancements of value-added niobium (Nb) microalloyed thermo-mechanical controlled process (TMCP) plate steels continue to be developed for more demanding end user requirements. The market demand for reduced fuel consumption and CO2 emissions in the automotive and construction sectors have further increased the demand for these new and advanced higher quality Nb-bearing steel grades. Often, the transition from laboratory melted and TMCP hot rolled heats to the production scale requires some continuous casting, thermal and mechanical metallurgy adjustments fr

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7

Jaworski, Jan, and Tomasz Trzepieciński. "Surface Layer Properties of Low-Alloy High-Speed Steel after Grinding." Acta Mechanica et Automatica 10, no. 4 (2016): 275–79. http://dx.doi.org/10.1515/ama-2016-0042.

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AbstractInvestigations of the surface layer characteristics of selected kinds of low-alloy high-speed steel after grinding were carried out. They were carried out on the flat-surface grinder with a 95A24K grinding wheel without cooling. The influence of grinding parameters was defined especially for: the quantity of secondary austenite, surface roughness, microhardness and grinding efficiency with a large range of grinding parameters: grinding depth 0.005–0.035 mm, lengthwise feed 2–6 m/min, without a cross-feed on the whole width of the sample. It was found that improvement of grinding proper

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8

Cîndea, Lenuța. "Research on the quality of welded joints of P265GH heatresistant steel pipes at electron beam mechanized welding." Studia Universitatis Babeș-Bolyai Engineering 65, no. 1 (2020): 21–28. http://dx.doi.org/10.24193/subbeng.2020.1.2.

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This paper analyzes the quality of welded joints of high temperature resistant steel pipe at electron beam welding, knowing that the mechanical properties of these types of steels are influenced by the interaction of different processes specific to physical and mechanical metallurgy. Analyzing the values of the local hardening estimator ΔHV10 calculated between the characteristic areas of welded joints, it is observed that it has a decreasing tendency at thermally de-stressed joints, in all areas of the welded joints, especially in the welded seam.

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9

Kutuniva, Kari, Jussi A. Karjalainen, and Kari Mäntyjärvi. "Effect of Convex Sheared Punch Geometry on Cutting Force of Ultra-High-Strength Steel." Key Engineering Materials 504-506 (February 2012): 1359–64. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.1359.

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Extremely high strength of the ultra-high-strength steels leads to increased load factors on the tooling machines and punching tools. This experimental study examines how much convex punch geometry affects cutting forces when punching ultra-high-strength steels. Tools used in punching tests were four different convex sheared rooftop punches and one conventional flat end punch, to which rooftop punches were compared to. The material in punching tests was ultra-high-strength steel Ruukki Optim 960 QC, with a thickness of 4 mm. The test material in punching tests was sheared with rooftop punches

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10

Walek, Josef, and Lenka Kunčická. "Effect of Oxide Systems on Purity of Tool Steels Fabricated by Electro Slag Remelting." Molecules 30, no. 6 (2025): 1284. https://doi.org/10.3390/molecules30061284.

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The purity of a steel is an important factor influencing the quality of the final products. Therefore, it is important to optimize the existing and develop new steelmaking technologies that affect the resulting purity. Electro slag remelting is a technology of tertiary metallurgy, which can advantageously be used to fabricate high quality steels. The study presents selected theoretical aspects of oxide systems and their specific influences on effectiveness of the electro slag remelting technology. The aim of this work was to experimentally analyze the purity of a tool steel fabricated by elect

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11

Kunakbaeva, A. T., A. M. Stolyarov, and M. V. Potapova. "Influence of technology parameters of free-cutting steel continuous casting on the billet internal structure." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 76, no. 2 (2020): 139–42. http://dx.doi.org/10.32339/0135-5910-2020-2-139-142.

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Free-cutting steel gains specific working properties thanks to the high content of sulfur and phosphorus. These elements, especially sulfur, have a rather high tendency to segregation. Therefore, segregation defects in free-cutting steel continuously cast billets can be significantly developed. The aim of the work was to study the influence of the chemical composition of freecutting steel and casting technological parameters on the quality of the macrostructure of continuously cast billets. A metallographic assessment of the internal structure of cast metal made of free-cutting steel and data

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12

Maghet, Teodora, Jörg Mährlein, Thomas Wilhelm, et al. "Thermally Sprayed Coatings as Corrosion Protection for Steel Structures – Influence of the Manufacturing Processes on the Coating Quality." Solid State Phenomena 227 (January 2015): 171–73. http://dx.doi.org/10.4028/www.scientific.net/ssp.227.171.

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The use of technical construction parts in corrosive environments frequently leads to costly damage and sometimes to a loss of the functionality of the component parts. Particularly to be noted in this regard are steel structures exposed to industrial and maritime weather conditions (e.g. steel towers, tower flanges for the wind energy industry, primarily in coastal and offshore regions, supports and arch parts used in bridge construction, etc.). These require an especially high corrosion resistance.

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13

Smith, Ian F. C., and Manfred A. Hirt. "A review of fatigue strength improvement methods." Canadian Journal of Civil Engineering 12, no. 1 (1985): 166–83. http://dx.doi.org/10.1139/l85-016.

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Improving the fatigue strength of welded joints may be economically interesting in many situations, especially in those cases where high-strength steels are used. However, widespread use of a method is, in many cases, restricted by a lack of knowledge of its reliability. Previous work has focused only on the effectiveness of improvement methods to increase fatigue strength; cost studies and quality control instructions are rarely given.In this report, several methods for structural steel are summarized. A review of existing test results shows that improved connections made from a high yield st

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14

Kachur, V. I. "INFLUENCE OF CHEMICAL COMPOSITION WITH HEAT TREATMENT OF STEEL ON THE STRUCTURE AND MECHANICAL PROPERTIES OF A KNIFE BLADE." Ukrainian Journal of Civil Engineering and Architecture, no. 2 (026) (April 27, 2025): 48–57. https://doi.org/10.30838/ujcea.2312.270425.48.1143.

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Анотація:

Introduction. The main requirement for high-quality knife steel is its balanced chemical composition and appropriate heat treatment, which provides optimal indicators of hardness, wear resistance and corrosion resistance of the cutting part. It is the combination of these characteristics that determines the operational properties of the knife, including its ability to hold the cutting edge for a long time and resist mechanical and chemical influences. Modern industry offers a wide range of high-quality materials for the manufacture of knives, including tool steels, special die steels, as well

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15

Huang, Qing, Bin Xu, Bing Li, Gang Bing Song, and Jun Teng. "Monitoring for Large Cross-Section CFSTs of a Super High-Rise Building with Piezoceramic Actuators and Sensors." Advanced Materials Research 163-167 (December 2010): 2553–59. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2553.

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As a typical composite structural type, concrete-Filled Steel Tubes (CFSTs) have been widely employed in civil engineering structures, especially in super high-rise buildings because of their enhanced load-carrying capacity and ductility. The uniformity and quality of the on-site cast concrete within the tube and the interface bonding performance between the steel tube and the concrete have received extensive attention. In this paper, Piezoelectric ceramic materials, such as Lead Zirconate Titanate (PZT) and a kind of functional smart aggregate (SA) based on PZT together are employed to evalua

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16

Xie, Hai Bo, Lian Jie Li, Tian Wu Liu, En Rui Wang, Xu Liu, and Zheng Yi Jiang. "Three Dimensional Finite Element Simulation of Strip Shape and Flatness of High Strength Steel." Key Engineering Materials 794 (February 2019): 232–45. http://dx.doi.org/10.4028/www.scientific.net/kem.794.232.

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High-strength steel is a type of alloy steel that provides better mechanical properties or greater resistance to corrosion than carbon steel. Strip shape is an important factor affecting the strip quality significantly for the rolled products. Because of the complex influence factors of plate shape and profile, shape detection and control technology have not been solved, especially for high strength steel rolling. In this paper, a novel three dimensional finite element simulation of the strip shape and flatness of high strength steel has been proposed. The material constitutive model has been

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17

Kurc-Lisiecka, A., and A. Lisiecki. "Laser welding of stainless steel." Journal of Achievements in Materials and Manufacturing Engineering 1, no. 98 (2020): 32–40. http://dx.doi.org/10.5604/01.3001.0014.0815.

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Purpose: of this paper was to analyze the influence of the basic parameters of laser welding (i.e. laser beam power and welding speed, as well as energy input) of butt joints of the 2.0 mm thick stainless steel AISI 304 sheets on the weld shape and joint quality. Design/methodology/approach: The preliminary trials of simulated laser welding by melting the austenitic stainless steel sheets (the so called bead-on-plate welding), as well as the welding of the test butt joints, were carried out using the high-power diode laser (HPDL) ROFIN DL 020, without the additional material (the technique of

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18

Futas, Peter, Alena Pribulova, Jozef Petrik, Peter Blasko, Andrea Junakova, and Vladimir Sabik. "Metallurgical Quality of Cast Iron Made from Steel Scrap and Possibilities of Its Improvement." Metals 13, no. 1 (2022): 27. http://dx.doi.org/10.3390/met13010027.

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In the field of metallurgy, there are many factors that influence the final quality of cast iron. These are mainly charge materials, chemical composition and metallurgical preparation up to the final casting process. Even small deviations from metallurgical processing lead to fluctuations in melt quality and the occurrence of casting defects. Charge materials have a significant impact on the quality of cast iron, especially steel scrap, which is increasingly used from an economic and ecological point of view, especially when melting cast iron in electric furnaces. Cast iron produced from a hig

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19

Jansto, Steven. "The Integration of Process and Product Metallurgy in Niobium Bearing Steels." Metals 8, no. 9 (2018): 671. http://dx.doi.org/10.3390/met8090671.

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A review of the technological integration of both the process and physical metallurgical advancements of value-added niobium (Nb) microalloyed thermo-mechanical controlled process (TMCP) steels have evolved into the development of higher quality steels for more demanding end user requirements. The connection of process and physical metallurgy is evolving through the integration of research that is aimed at improving product quality. However, often the connection of the process metallurgical parameters is not reported, especially with industrial data. The importance of this innovative metallurg

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20

Holtzer, M., A. Bobrowski, D. Drożyński, and J. Mocek. "Selection of Protective Coatings of Moulds for Castings of High-Manganese Cast Steel in Dependence of the Applied Moulding Sand Kind." Archives of Metallurgy and Materials 58, no. 3 (2013): 853–57. http://dx.doi.org/10.2478/amm-2013-0086.

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Abstract High-manganese cast steels are characterised by a high abrasion resistance under friction conditions with a simultaneous influence of pressure and impacts. This cast steel is especially suitable for castings of excavator’s scoops, track links, streetcars crossovers, parts of crushers and mills for braking up of hard materials [1-4]. In order to obtain high quality castings of high-manganese cast steels in moulds on the high-silica sand matrices it is necessary to apply protective coatings, which prevent a direct contact between metal and matrix (SiO2). Manganese after being poured int

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21

Kaščák, Ľuboš, Emil Spišák, and Ivan Gajdoš. "Influence of Welding Parameters on the Quality of Resistance Spot Welded Joints of DP600 Steels." Key Engineering Materials 635 (December 2014): 143–46. http://dx.doi.org/10.4028/www.scientific.net/kem.635.143.

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Advanced high-strength dual-phase steel was developed specifically for automotive industry in order to benefit from its excellent formability and great crash absorption ability in comparison with conventional AHSS. Resistance spot welding is the dominant and effective method of joining metal sheets in automobile industry. After spot welding, important changes occur in mechanical and metallurgical properties of the spot welded areas and heat affected zones. The investigation into these changes is very important for safety, which depends on the strength of the welded joints. Weldability of the D

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22

Li, Kai Di, De Gui Liu, Jin Shan Li, Bin Tang, and Hong Chao Kou. "Numerical Simulation of Stagger Spinning for D406A High-Strength Steel." Materials Science Forum 944 (January 2019): 778–87. http://dx.doi.org/10.4028/www.scientific.net/msf.944.778.

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Metal spinning process is widely used because of its low power requirement to producing complex symmetry components. In this paper, a modified 3D finite element(3D-FE) model is developed under the FE software environment based on characteristics of stagger spinning process. Analysis of the multi-pass spinning deformation mechanism and the effects of spinning parameters on spinning deformation is carried out. The results show that, large internal diameter of tube blank and low dimensional accuracy are caused by too little feed rate of spinning roller, especially for thin-walled tube. But if the

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23

Tamminen, Satu, Henna Tiensuu, Ilmari Juutilainen, and Juha Röning. "Steel Property and Process Models for Quality Control and Optimization." Materials Science Forum 762 (July 2013): 301–6. http://dx.doi.org/10.4028/www.scientific.net/msf.762.301.

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High quality and low variability in the properties of the products are the main goals in manufacturing. The quality of the product is verified by testing different properties. It can be improved with models developed for event prediction. This paper presents with application examples the modelling steps required for effective process modelling. First, the pre-processing and feature extraction phase are illustrated. The modelling phase concentrates especially on the heteroscedasticity problem that is commonly present in industrial applications. The process monitoring and control parameter optim

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24

Khantisitthiporn, Thawatchai, Monnapas Morakotjinda, Bhanu Vetayanugul, and Ruangdaj Tongsri. "Machined Surface Quality of Pre-Sintered Hardenable PM Steel." Key Engineering Materials 659 (August 2015): 335–39. http://dx.doi.org/10.4028/www.scientific.net/kem.659.335.

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The benefit of pre-sintered machining is to avoid machining difficulty of sintered parts especially hardenable PM steels. Pre-sintering treatments of green PM part at temperatures lower than the normal sintering temperature of 1120 °C result in green strength improvement high enough for machining. In this study, the influences of various pre-sintering temperatures and several machining conditions on machined surface quality of pre-sintered PM samples were investigated. The pre-sintered samples were machined by a turning process using a carbide cutting insert with varied cutting speeds at a fix

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25

Tillmann, W., T. Ulitzka, L. Dahl, L. Wojarski, and H. Ulitzka. "An investigation of the influence of integration of steel heat treatment and brazing process on the microstructure and performance of vacuum-brazed cemented carbide/steel joints." Welding in the World 66, no. 5 (2022): 1053–66. http://dx.doi.org/10.1007/s40194-022-01266-9.

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AbstractCemented carbides are commonly brazed to transformation hardening tool steels without taking a proper and adequate steel heat treatment into account. This publication shows the limits and possibilities of integrating a steel heat treatment, including a quenching process, into a vacuum brazing process. Therefore, copper-based filler metals are selected to ensure the steel component’s high and homogenous hardness and supply a high joint quality. In this context, the aimed steel hardness was chosen in the range between 400 and 440 HV1 based on industrial experiences. This specific hardnes

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26

Афанасьєва, Ольга Валентинівна, Наталія Олексіївна Лалазарова та Олена Георгіївна Попова. "Нові технології лазерної поверхневої обробки". Aerospace technic and technology, № 2 (28 квітня 2021): 59–65. http://dx.doi.org/10.32620/aktt.2021.2.07.

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Subject and purpose. Currently, gas, solid-state, and fiber lasers are used to process materials in the aviation industry. For the thermal treatment of steels, gas CO2 lasers with a capacity of more than 1 kW used, which are reliable in operation but have high cost and low efficiency. There are no results on the use of low-power (up to 20 W) pulsed-mode lasers for surface hardening of steel products. The purpose of this work is to determine the modes of surface hardening of products from carbon and alloy steels using low-power solid-state pulsed YAG lasers. Methodology. For laser hardening, a

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27

Rožnovská, Gabriela, Vlastimil Vodárek, and Zdeněk Kuboň. "Precipitation of Secondary Phases in a Supermartensitic 13Cr6Ni2.5MoTi Steel during Heat Treatment." Materials Science Forum 891 (March 2017): 161–66. http://dx.doi.org/10.4028/www.scientific.net/msf.891.161.

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The balance between strength and toughness of supermartensitic steels can be controlled by heat treatment parameters. Quality heat treatment usually consists of quenching and single or double tempering above the Ac1 temperature. Such a treatment results in stabilization of reverted austenite in the tempered martensite. Tempering can also be accompanied by intensive precipitation processes, especially in high alloyed grades. A detailed TEM characterisation of precipitation processes in a 13Cr6Ni2.5MoTi supermartensitic steel proved that single tempering at temperatures of 600°C and 690°C was ac

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28

Kolchanov, D. S., A. A. Drenin, A. O. Denezhkin, L. A. Shustova, and S. R. Safiullin. "Features of the process of selective laser melting from structural steel 28Cr3SiNiMoWV." Proceedings of Higher Educational Institutions. Маchine Building, no. 10 (751) (October 2022): 79–88. http://dx.doi.org/10.18698/0536-1044-2022-10-79-88.

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Selective laser melting is one of the most sought-after additive manufacturing technologies that can meet the growing needs of the industry. Structural high-strength steels have always been in demand for the manufacture of critical parts, especially in heavy and power engineering. The features of the process of selective laser melting of high-strength structural steel 28Cr3SiNiMoWV of domestic production are studied on the SLP-250 additive complex developed at the Bauman Moscow State Technical University together with MCLT LLC. The input control of the powder material was carried out, includin

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29

Di Gilio, A., G. Farella, A. Marzocca, et al. "Indoor/Outdoor Air Quality Assessment at School near the Steel Plant in Taranto (Italy)." Advances in Meteorology 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/1526209.

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This study aims to investigate the air quality in primary school placed in district of Taranto (south of Italy), an area of high environmental risk because of closeness between large industrial complex and urban settlement. The chemical characterization of PM2.5 was performed to identify origin of pollutants detected inside school and the comparison between indoor and outdoor levels of PAHs and metals allowed evaluating intrusion of outdoor pollutants or the existence of specific indoor sources. The results showed that the indoor and outdoor levels of PM2.5, BaP, Cd, Ni, As, and Pb never excee

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30

Jagadish, C. A., and Nadig Priyanka. "Effect of Cryogenic Treatment on the Mechanical Properties of 18Ni-300 Grade Maraging Steel Built Using the Direct Metal Laser Sintering (DMLS) Technology." Key Engineering Materials 719 (November 2016): 114–21. http://dx.doi.org/10.4028/www.scientific.net/kem.719.114.

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Maraging steels belong to the class of steels that are found to have a unique combination of ultra-high strength and good fracture toughness, due to which they find uses in critical applications such as aircraft forgings, pressure vessels, missile casings, hydraulic hoses etc. Several studies on the effect of cryogenic treatment on various grades of Tool steels & Maraging steels have shown significant improvements in mechanical properties and dimensional stability.DMLS (Direct Metal Laser Sintering), an additive manufacturing technology, is increasingly becoming popular to build intricate

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31

Manocha, Sanjeev, and François Ponchon. "Management of Lime in Steel." Metals 8, no. 9 (2018): 686. http://dx.doi.org/10.3390/met8090686.

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Анотація:

The EU28 total lime demand in 2017 was estimated at about 20 million tons, out of which about 40% are consumed in the iron and steel industry. Steel remains the major consumer after environment and construction. The lime industry is quite mature and consolidated in developed countries, with enough reserves and production to serve regional markets while being fragmented in developing nations where steel producers rely on local sourcing. There is relatively very little trade for lime worldwide. Lime has a critical role at different steps of the steelmaking process, and especially to make a good

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Soekardjo, Gunadi, G. Aji Sentosa, Arry Aryadi, et al. "The application of high-grade steel to the road barrier design for the construction project cost efficiency." IOP Conference Series: Earth and Environmental Science 1195, no. 1 (2023): 012035. http://dx.doi.org/10.1088/1755-1315/1195/1/012035.

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Abstract Steel is a construction material that has been used in the construction field for a long time, so we need to consider more about the quality and the grading. Meanwhile, the cost of steel is so high that it will also impact the implementation. On this occasion, Hutama Karya Group in the collaboration with PT Bhirawa Steel has done research and innovation to the High-Grade Steel Structure, especially for type 520 MPa reinforcing steel which includes the development of Tensile strength, Yield Strength, Elongation from the strength of the materials. High-Grade Steel will be a solution to

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Aziz, Sarvan. "Characteristics of Quality Formation in Processing of 32CrMoV12-10 Steel by Honing." Key Engineering Materials 979 (April 5, 2024): 39–45. http://dx.doi.org/10.4028/p-8bwr6u.

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Анотація:

Metallurgical indicators of 32CrMoV12-10 brand steel, which is a convenient construction material, were investigated and the main characteristics of the honing operation, especially the main factors affecting the geometric shape and size accuracy of the detail surface were determined based on these data. The physical-mechanical indicators and analysis of the chemical composition of the material were determined, analyzes were carried out to improve the technological and operational properties, the factors influencing the quality and the optimal processing conditions were determined. As a result

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34

Protasenko, Tetiana, Olena Rebrova, and Hanna Fedorenko. "Studying the influence of heat treatment modes on the properties of medium-carbon steel." Bulletin of Kharkov National Automobile and Highway University 1, no. 103 (2023): 144. http://dx.doi.org/10.30977/bul.2219-5548.2023.103.1.144.

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Анотація:

Problem. Parts of modern machines and structures operate under high dynamic loads, stress concentrations, and low or high temperatures. All of this contributes to brittle fracture and reduces the reliability of machines. Therefore, structural steels must, in addition to high mechanical properties, have high structural strength, which is manifested in the conditions of its actual use in the form of parts, structures, etc. [1] A properly selected heat treatment mode allows to obtain an optimal combination of properties in a part, thereby ensuring its reliability and operational durability.

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35

Robelet, Marc, Ahmed Rassili, and Dirk Fischer. "Steel Grades Adapted to the Thixoforging Process: Metallurgical Structures and Mechanical Properties." Solid State Phenomena 116-117 (October 2006): 712–16. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.712.

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Thixoforming of steel offers the advantages of casting technology in combination with high mechanical strength that can only be achieved by forging. The progress in establishing this technology in industry depends on the success in the development of suitable steel grades. Recent investigations dealt with the development of steel grades that are especially adapted to the thixoforming process. For this, alloys were developed with a lower solidus temperature and a wider process temperature range compared to classic forging steels. In consequence, the inductive heating process is more tolerant to

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36

Em, A. Yu, O. A. Komolova, K. V. Grigorovich, and S. B. Rumyantseva. "Formation of non-metallic inclusions in production of 08Kh18N10T corrosion-resistant steel." Izvestiya. Ferrous Metallurgy 67, no. 5 (2024): 549–55. https://doi.org/10.17073/0368-0797-2024-5-549-555.

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Анотація:

Corrosion-resistant steels are in demand in the modern world due to their high performance properties and a wide range of applications. Such areas of application include kitchenware, furniture, medical equipment, nuclear reactors, spacecraft, etc. Oxygen in steel, especially in corrosion-resistant steel, is one of the most harmful elements. Oxide inclusions disrupt the homogeneity of the metal, negatively affect the ductility, fracture toughness, fatigue strength and corrosion resistance of steel. In corrosion-resistant steels, non-metallic inclusions (NI) lead to the formation of defects in c

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37

Gong, Chao, Dawei Sun, Qixian Chen, Yong Zhu, Mingxu Shang, and Faqi Liu. "Seismic Performance of Modular Structures with Novel Steel Frame: Light Gauge Slotted Steel Stud Walls." Shock and Vibration 2022 (February 3, 2022): 1–18. http://dx.doi.org/10.1155/2022/6926657.

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Анотація:

Modular structures are premanufactured off-site and assembled on-site, leading to reduced on-site works and construction periods and improved quality compared to conventional prefabricated steel structures and reinforced concrete structures. Meanwhile, steel frame-light gauge slotted steel stud (LGSS) walls have been considered to be assembled into the modules due to their excellent thermal- and sound-insulation properties. These structural components will also contribute to the resistance of the modular system when subjected to lateral loads/actions, especially seismic actions. A finite eleme

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Suarez, Lucia, R. Coto, X. Vanden Eynde, M. Lamberigts, and Yvan Houbaert. "High Temperature Oxidation of Ultra-Low-Carbon Steel." Defect and Diffusion Forum 258-260 (October 2006): 158–63. http://dx.doi.org/10.4028/www.scientific.net/ddf.258-260.158.

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An oxide scale layer always forms at the strip surface during the hot rolling process. Its properties have a large impact on surface quality. The most important features of the oxide layer are its thickness, composition, structure, adherence and coherence. Temperature, time and gas atmosphere determine the growth of oxide layers. In this paper, the high temperature oxidation properties of ultra low carbon steels are discussed in terms of oxide growth mechanism, kinetics and phase morphology. The oxidation kinetics of ultra-low carbon steel (ULC) in air, its scale structure and composition were

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39

Bhat, Subrahmanya. "The Desired Features of an Oxide Film on Stainless Steel Tubing." Materials Performance 57, no. 1 (2018): 40–43. https://doi.org/10.5006/mp2018_57_1-40.

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Field performance of martensitic 13% Cr stainless steel tubing/casing in high-pressure, high-temperature wells depends on the formation of a protective chromic oxide (FeCr2O4) film that behaves like a p-type semiconductor. The finished product will have desired surface features only if there is stringent compliance with quality control in the manufacturing process. Otherwise, the formation of hydrated mill scale, which behaves like an n-type semiconductor, promotes severe crevice corrosion while in service, especially when exposed to halide-based brines with significant dissolved oxygen conten

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Yan, Hang, Detao Cai, Shiyi Gao, Yong Dong, Hongfeng Zhou, and Ziyi Luo. "Application of high entropy alloy in aluminum/steel (Al/Fe) dissimilar welding." Journal of Physics: Conference Series 2954, no. 1 (2025): 012001. https://doi.org/10.1088/1742-6596/2954/1/012001.

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Анотація:

Abstract Dissimilar material welding, especially aluminum/steel welding, is widely researched and applied in industrial manufacturing. However, many hard and brittle compounds will be formed in the Al/Fe dissimilar welding process because of their different properties. This leads to cracking and a consequent reduction in the plastic toughness of the welded joints, which would limit the use of Al/Fe weldments in practical industrial applications. Many studies have inhibited the formation of intermetallic compounds by adding different interlayers to regulate the elements in welded joints. Theref

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Wang, Ling, Xinbo Liu, Juntao Ma, Wenzhi Su, and Han Li. "Real-Time Steel Surface Defect Detection with Improved Multi-Scale YOLO-v5." Processes 11, no. 5 (2023): 1357. http://dx.doi.org/10.3390/pr11051357.

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Анотація:

Steel surface defect detection is an important issue when producing high-quality steel materials. Traditional defect detection methods are time-consuming and uneconomical and require manually designed prior information or extra supervisors. Surface defects have different representations and features at different scales, which make it challenging to automatically detect the locations and defect types. This paper proposes a real-time steel surface defect detection technology based on the YOLO-v5 detection network. In order to effectively explore the multi-scale information of the surface defect,

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42

Yani, Endri, and Fuad Muttaqin. "Pendekatan Overall Equipment Effectiveness (OEE) untuk Analisis Kerusakan Slitting Coil Machine (Studi Kasus)." Jurnal Inovasi Rekayasa Mekanikal dan Termal 1, no. 1 (2023): 76–80. http://dx.doi.org/10.25077/inomet.1.1.76-80.2023.

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Анотація:

As the industry grows, there is a greater demand for efficient production. This is especially true for producing steel pipes in high order. Producing steel pipes involves multiple components, including the coil stand, slitting coil machine, pinch roll and leveler, strip accumulator, edge milling, forming, high-frequency resistance welding (HFRW), and rotary cut-off. All of these components need to work correctly for optimal production. Maintenance is also essential to prevent problems and damage during production. One common problem is damage to the slitting coil machine, which cuts the coil o

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Hitzler, Leonhard, Johann Hirsch, Markus Merkel, and Andreas Öchsner. "Thermal Environment and Inclination Angle Dependencies on the Surface Quality of Selective Laser Melted 316L Steel." Defect and Diffusion Forum 372 (March 2017): 202–7. http://dx.doi.org/10.4028/www.scientific.net/ddf.372.202.

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Additive manufacturing processes offer the ability to manufacture highly complex geometries, but are limited in terms of the achievable surface quality. These limitations are based on physical restrictions, especially the need of support and the powder-bed environment, and economic decisions. In this study, the development of the morphology of surfaces with varying inclination angles was investigated on the example of 316L stainless steel. Surfaces with low inclination angles to the manufacturing plane suffered extensively from the process related staircase effect, whereas perpendicular side f

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44

Yang, Luo Cheng, Hong Xi Zhu, Cheng Ji Deng, Wen Jie Yuan, and Jun Ding. "Effect of Water Gap in Delivery System on Twin Roll Strip Caster by Simulation." Key Engineering Materials 602-603 (March 2014): 652–55. http://dx.doi.org/10.4028/www.scientific.net/kem.602-603.652.

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Анотація:

In continuous casting process, the mould is the core of the continuous caster, and the vast majority of the surface defects of steel is originated in the crystallizer. Choosing a reasonable water gap in the delivery system is particularly important, especially in twin roll strip continuous casting, the flow delivery system thin belt has a close relationship with the quality of the products. Experiments to skateboard and water gap, STEEL AISI 4340 materials chosen as the simulation material at the same time, distribution water gap taking the form of a set themselves by using the finite element

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45

Riofrío, Patricio G., José A. M. Ferreira, and Carlos A. Capela. "Imperfections and Modelling of the Weld Bead Profile of Laser Butt Joints in HSLA Steel Thin Plate." Metals 11, no. 1 (2021): 151. http://dx.doi.org/10.3390/met11010151.

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Анотація:

In many applications that use high strength steels, structural integrity depends greatly on weld quality. Imperfections and the weld bead geometry are influencing factors on mechanical properties of the welded joints but, especially in the fatigue strength, they cause a great decrease. The proper knowledge of these two factors is important from the nominal stress approach to the fracture mechanics approaches. Studies concerning the profile and imperfections of the weld bead in laser welding for thin plates of high strength steels are scarce. In this work, these two aspects are covered for five

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46

Kartika, Deviany, Hadi Surya Wibawanto, Tiong Iskandar, and Wahyu Bangkit Pangestuaji. "Comparative Analysis Study on Construction Cost Between Concrete Structures and Steel Structures Buildings in Surabaya." Journal of Advanced Civil and Environmental Engineering 5, no. 1 (2022): 1. http://dx.doi.org/10.30659/jacee.5.1.1-10.

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High-rise buildings in Indonesia must be designed resistance to receiving earthquakes. This is because the earthquake load that occurred in Indonesia has a high intensity. So that existing buildings, especially multi-story buildings must ensure good performance in receiving earthquake loads. This effort aims to maintain the safety of its users. Several aspects that need to be considered in designing earthquake-resistant buildings are structural performance and construction costs. Therefore, in this study, we will discuss the designed of earthquake-resistant structures by making comparisons on

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47

Sergeev, N. N., A. N. Sergeev, S. N. Kutepov, et al. "Influence of the Method of Producing High-Carbon Tool Steel U10A on the Physical, Mechanical, Technological and Corrosion Properties." Proceedings of the Southwest State University 23, no. 6 (2020): 56–76. http://dx.doi.org/10.21869/2223-1560-2019-23-6-56-76.

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Анотація:

Purpose of research is study of the effect of the quality of the original charge on the complex of physical, mechanical, technological and corrosion properties of high-carbon tool steel U10A.Methods. High-carbon tool steel U10A, smelted at Tulachermet PJSC using metallized sponge iron pellets, scrap metal and a billet obtained by the fluidized slag blanket, has been chosen as the object of study. Steel was smelted in a three-ton arc furnace, subjected to out-of-furnace vacuum treatment in a ladle, cast into billets with a cross section of 280 × 320 mm and cooled slowly together with the furnac

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48

Yu, Qiangliang, Chaoyang Zhang, Rui Dong, et al. "Physicochemical and tribological properties of gemini-type halogen-free dicationic ionic liquids." Friction 9, no. 2 (2020): 344–55. http://dx.doi.org/10.1007/s40544-019-0348-5.

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Анотація:

AbstractA series of new halogen-free dicationic ionic liquids (ILs) with different alkyl chain lengths were prepared, and the relationship between the alkyl chain length, physicochemical and tribological properties of ILs, and their role as neat lubricant for steel-steel friction pairs, was investigated. Evaluation of stability during hydrolysis and copper strip corrosion test results show that synthetic ILs are stable and not corrosive to metal contacts, due to the halogen-free anions. The friction and wear test results indicate that ILs with long alkyl chains have excellent friction-reducing

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49

Gao, Yubo, Yanping Bao, Min Wang, Haibo Zhang, and Ying Wang. "Investigation on the effect of reduction process on internal quality of high carbon steel billet and its evolution in as-rolled wire rod." Metallurgical Research & Technology 121, no. 5 (2024): 506. http://dx.doi.org/10.1051/metal/2024058.

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Анотація:

The effect of reduction process, especially the reduction zone on the internal quality of continuous casting high carbon steel billets was studied by shifting active reduction rolls while at same casting condition, as well as identical reduction amount and gradient. In the present study, the heredity of the main internal defects emerged in billets with different reduction zones was also investigated after subsequent rolling process in terms of severity, regional distribution, and microstructure formation as well. For the investigated high carbon steel grade, the evolution of the internal quali

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50

Gulnur, Saspugayeva, Tussupova Zhazgul, Daribay Ainur, et al. "Polarity Effect of Stainless-Steel and Copper Electrode Materials for the Purification of Slaughterhouse Wastewater." Sustainability 15, no. 3 (2023): 2036. http://dx.doi.org/10.3390/su15032036.

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Анотація:

Although electrochemical methods are one of the most efficient approaches for treating wastewater, the type of wastewater to be treated, the type of electrode material employed, and the polarity direction all significantly affect how well these systems work. The prospective application of the proposed materials for the purification of slaughterhouse effluent has not been sufficiently explored in earlier studies, despite the fact that the materials (copper and stainless-steel) are reasonably inexpensive and easily accessible, especially in low-income countries. It is also unfortunate that previ

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