Готові списки джерел за темами / Straightening schemes

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Добірка наукової літератури з теми "Straightening schemes"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Straightening schemes"

Guan, Ben, Yong Zang, Yuan Wang, Sha Feng, and Xiao Chan Liu. "The Influence of Process Scheme on the Straightening Effect of Section Steel." Advanced Materials Research 572 (October 2012): 302–7. http://dx.doi.org/10.4028/www.scientific.net/amr.572.302.

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By studying the geometrical features and the mechanical characters of the profiles during the roller leveling process and combining the basic elastic-plastic theories, a mechanical model is established which is suitable for analyzing elastic-plastic bending of the profile during roller leveling process. Using this model, the straightening effects have been analyzed under different roller leveling process schemes for the profiles which have typical initial curvatures. The analysis of roller leveling process confirms that the curvature ranges of the profiles can't converged infinitely under any

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Tamila, V. A., I. I. Vegera, V. V. Liaukovich, and A. V. Vetoshkin. "Technology and equipment of roll straightening of sheet metal." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 4 (January 20, 2023): 70–78. http://dx.doi.org/10.21122/1683-6065-2022-4-70-78.

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The features of the editing technology, possible defects of sheet metal and piece blanks of complex configuration are presented. The main schemes and designs of sheet‑straightening machines are considered, as well as the main directions of improvement of LSM designs and editing technologies are highlighted. The analysis of the process of roll straightening is presented taking into account the phenomena occurring in a metal undergoing alternating loading with decreasing amplitude (interaction of elastic and plastic deformation, Bauschinger effect, etc.). The parabolic dependence of the residual

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S., S. ZDANEVICH, P. POGREBNYAK R., and V. ZDANEVICH S. "STRUCTURAL ANALYSIS AND RATIONAL DESIGN OF MECHANISMS OF CROSS-ROLL TUBE STRAIGHTENING MACHINES." Science and Transport Progress, no. 5(77) (November 19, 2018): 65–73. https://doi.org/10.15802/stp2018/147630.

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Purpose. The article is aimed to perform a structural analysis of the main and auxiliary mechanisms of tube straightening machines, to identify structural and local redundant links in the mechanism schemes, and to offer recommendations on their rational design. Methodology. The solution is realized by means of the theory of mechanisms and machines using structural analysis of the mechanisms of tube straightening machines based on the universal structural theory of O.G. Ozol. Findings. The extended principle of the mach

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Shui, Lang, and Jianhui Fu. "An investigation on as-cast microstructure and homogenization of nickel base superalloy René 65." High Temperature Materials and Processes 41, no. 1 (2022): 555–67. http://dx.doi.org/10.1515/htmp-2022-0245.

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Abstract Nickel base superalloy René 65 is a cast-wrought derivative of René 88DT. Lower cost and comparable physical properties allow René 65 to serve as a promising candidate material for turbine disks in next-generation aeroengines. The cast-wrought route leads to significant segregation of solute elements during solidification of René 65, which should be reduced by a proper homogenization scheme. We use René 65 samples from a Ø 450 mm electros-slag remelting ingot (sample Disk I) and a Ø 250 mm pilot vacuum arc remelting ingot (sample Disk II) to investigate as-cast microstructure and homo

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Shustov, O., A. Adamchuk, P. Kravchenko, V. Symonenko, and A. Shustova. "Improvement of technological solutions for reclamation of Morozivskyi lignite open pit mine." Collection of Research Papers of the National Mining University 79 (December 30, 2024): 121–32. https://doi.org/10.33271/crpnmu/79.121.

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Purpose. Substantiation of the parameters of mining reclamation of the sides of the split and howling trenches of the flooded Morozivskyi lignite open pit mine. Methods. In solving the problems of the study, methods of analytical analysis, graph analytics, engineering calculations, statistical processing, and comparative analysis of data to improve the technological schemes of mining and technical reclamation of the sides of the mine workings of the flooded Morozivskyi lignite open pit mine were used. Findings. The main stages of land restoration are defined, which are as follows: alignment of

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Xia, Liang Yu, Dong Ming Sun, Gui Rong Kang, and Jian Sun. "The Straightening Scheme Analysis for the Copper-Clad Steel Tube." Advanced Materials Research 887-888 (February 2014): 1223–26. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.1223.

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In this paper, we studied the large deformation and the small deformation method based on the research of the existing system of straightening theory and considered the characteristics of copper-clad steel to find a proper straightening scheme for this new composite materials. the advantages and disadvantages of the method are also compared. the straightening scheme for straightening effect and parameters is a decisive role before all kinds of straightening parameter determination. But at present, there isnt a equipment for the straightening of this new material.

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Dvorkin, E. N., and F. M. Medina. "Finite Element Models for Analyzing the Straightening of Steel Seamless Tubes." Journal of Engineering for Industry 111, no. 4 (1989): 351–55. http://dx.doi.org/10.1115/1.3188771.

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An important part of the steel seamless tubes production scheme is the straightening process. Finite element models are developed to analyze the straightening process and to evaluate its effect on the final external collapse pressure of the tubes.

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Han, Xue Yan, Kang Liu, and He Rong Jin. "Design of High Precision Online Sizing Cutter for PC Steel Bars." Advanced Materials Research 746 (August 2013): 520–23. http://dx.doi.org/10.4028/www.scientific.net/amr.746.520.

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Along with the development of high-rise buildings and high-speed railways, the straightness and sizing accuracy of PC steel bars is highly demanded. The addition of precision straightening process between traction and shear in the production line of PC steel bars can improve the application performance of products effectively. Moreover, the traditional shear mode is changed to realize high precision sizing and cutting purpose in high-speed production (90m/min). A straightening scheme with large deformation and equal curvature was proposed in this article, which can realize circumferential stan

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Gupalov, B. A. "Improving the Quality of Manufacturing of Locomotive Body Frames." Vestnik IzhGTU imeni M.T. Kalashnikova 25, no. 1 (2022): 62–76. http://dx.doi.org/10.22213/2413-1172-2022-1-62-76.

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The paper describes the process of manufacturing the frame of locomotive bodies, which is a complex step-by-step process of assembling (welding) elements. It has been established that internal stresses cause welding deformations, while the deviation from the straightness of the sidewalls of the electric locomotives body frames of 2ES6, 2ES10, 2ES7 series (manufactured by Ural Locomotives LLC) can reach up to 25 mm with a tolerance of 5 mm. The results of internal stress analysis for linear displacements of 25 mm sidewalls showed that the maximum stress values can reach up to 45 MPa. To improve

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Mróz, Sebastian, Piotr Szota, Tomasz Garstka, Grzegorz Stradomski, Jakub Gróbarczyk, and Radosław Gryczkowski. "The Selection of Leveler Parameters Using FEM Simulation." Materials 17, no. 1 (2023): 52. http://dx.doi.org/10.3390/ma17010052.

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The aim of this research was to select parameters for the roll pre-leveler to provide sheet metal waviness reduction after unwinding from the coil. Straightening parameters were selected based on the results of numerical simulations with the use of an FEM-based computer program. The material used for research was a hot-rolled sheet metal of grade S235JR + AR with a thickness of 3 mm and width of 1500 mm after unwinding from the coil. A mathematical model was developed to determine straightening roll arrangements in the pre-leveler. It enabled roll arrangement selection and a straightening sche

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Більше джерел

Дисертації з теми "Straightening schemes"

Товстогуз, Б. А. "Выпрямители переменного тока". Thesis, Сумский государственный университет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/67043.

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Анотація:

Сеть переменного тока является источником питания всех стационарных радиоэлектронных устройств. Однако использовать непосредственно переменный ток для их питания не представляется возможным, т. к. эти устройства запитываются постоянным током.

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Частини книг з теми "Straightening schemes"

Boarnet, Marlon, and Randall C. Crane. "Lessons for Research and Practice." In Travel by Design. Oxford University Press, 2001. http://dx.doi.org/10.1093/oso/9780195123951.003.0016.

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Transportation problems seem to offer no end of interesting policy wrinkles and technical challenges, but despite the promise of each new technological innovation, financial windfall, and dazzling social science breakthrough, planners have not fared well. Air pollution, fuel, and traffic congestion costs continue to mount to where the benefits of making any headway appear substantial. Yet as more freeway lanes are dedicated to car-poolers and tollways, and new transit systems continue to soak up many billions of dollars, getting people to “improve” their driving behavior remains the ultimate p

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Kotulski, Zbigniew, and Aneta Zwierko. "Security of Mobile Code." In Handbook of Research on Wireless Security. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-899-4.ch003.

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The recent development in the mobile technology (mobile phones, middleware, wireless networks, etc.) created a need for new methods of protecting the code transmitted through the network. The oldest and the simplest mechanisms concentrate more on integrity of the code itself and on the detection of unauthorized manipulation. The newer solutions not only secure the compiled program, but also the data, that can be gathered during its “journey,” and even the execution state. Some other approaches are based on prevention rather than detection. In this chapter we present a new idea of securing mobi

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Kotulski, Zbigniew, and Aneta Zwierko. "Security of Mobile Code." In Mobile Computing. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-054-7.ch197.

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Тези доповідей конференцій з теми "Straightening schemes"

Zhu, Yongxiang, Jinming Leng, and Shidong Tang. "Technology for Straightening the Bent GT Rotor." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55423.

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The GT rotor is composed of a plurality of discs and two shafts. The GT gas turbine rotor may be bent after assembled because of each part has its geometric tolerance.The scheme must be carry out to straight the bend rotor. In oder to get well high speed balance, the surface of each disc excircle, torque tube and disc adaptor can’t be remachine on lath after assemble. We can machine the journal of the shaft on horizontal lathe to straight the slightly bended rotor. For the serious bended rotor, we must disassemble the rotor and change the parallelism of two side of the disc flange on vertical

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Miglietti, Warren, Kelly Crotty, Ian Summerside, Matthias Stampfli, and Simone Hoevel. "Development and Implementation of Alternative Repair Processes for Reconditioning of W501FD, Row 1 Vanes." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68476.

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The W501FD (SGT6-5000F) engine, an “F” class machine has been in operation for more than a decade now. There are over 200 W501F’s in operation globally. Of importance to operators/users and owners of this gas turbine engine is the ability to recondition the turbine “hot-end section” components, in order to support maintenance requirements. The row 1 vane endures the highest temperature after combustion takes place and experiences severe thermal fatigue cracking. As a consequence, the row 1 vanes when compared to the other three rows of vanes, exhibits the worst degradation and is therefore a f

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Barbu, Ionel, Adina Bucevschi, Andrei Komjaty, et al. "TEACHING AND E-LEARNING ABOUT DRAW FRAME MACHINE." In eLSE 2021. ADL Romania, 2021. http://dx.doi.org/10.12753/2066-026x-21-152.

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Abstract: This article presents a modern, e-learning method designed for the study of the draw frame for processing cotton fibers, blends of cotton and chemical fibers or chemical fibers cotton types. It exposes a new teaching and learning approach of the laboratory for subject Processes and Machines in Cotton Spinning Mill comprised in the academic curricula of the 3rd year students, specialization Technology and Design Textile Products and subject Processes in Spinning Mill comprised in the academic curricula of the 2nd year students, specialization Economic Industrial Engineering. The draw

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Gabor, Theodore T., Hang-Eun Joe, Semih Akin, Martin Byung-Guk Jun, Kyung-Han Kim, and Jong-Kwon Park. "Numerical Investigation of Various Coaxial Nozzle Designs for Direct Laser Deposition." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8444.

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Abstract Direct Laser Deposition (DLD) is a form of metal-based additive manufacturing. The DLD process involves ejecting powder out of a nozzle by means of an compressed gas and irradiating a laser beam to heat up the powder and the substrate. During the powder spray ejection, tight focusing of the powder stream has the potential to improve the DLD process by reducing powder wastage. Thus, nozzle design and computational fluid dynamics (CFD) analysis of the design parameters become important. This study focuses on the numerical simulation of the gas-solid flow inside a coaxial DLD nozzle and

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Heo, H. Y., D. H. Youn, and H. Chung. "Stochastic Assessment and Applications for Welding Shrinkage Impact on Production Cost." In SNAME Maritime Convention. SNAME, 2012. http://dx.doi.org/10.5957/smc-2012-p52.

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Since ship hull blocks are constructed by assembling numerous intermediate parts, negligible dimensional variations in the parts can easily accumulate to cause serious misalignment in block erection stage. Considering the welding – the primary joining process in ship production which inherently causes distortions, the quality of block’s dimensional variations during the assembly would deteriorate even faster. Thinking that the intermediate products with low dimensional quality in the ship production are not scrapped but reworked, the productivity of each workstation greatly depends on the dime

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