Relevant bibliographies by topics / Rolling piercing

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Rolling piercing'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Rolling piercing"

1

Orlov, D. A., A. V. Goncharuk, O. A. Kobelev, O. G. Komarnitskaya, and N. S. Bunits. "Analysis of pipe piercing on PRP 70-270 with FEM modeling." Izvestiya. Ferrous Metallurgy 63, no. 10 (December 10, 2020): 848–55. http://dx.doi.org/10.17073/0368-0797-2020-10-848-855.

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The article analyzes the piercing and rolling process of seamless pipes on PRP 70-270 of JSC “VMP” in terms of power parameters, piercing time and geometric sizes of pipes. The research results were compared with the results of computer simulation on software package QFORM 3D. For simulation, the deformation zones were designed for piercing a mold tube with dimensions of 203×16.5 mm in one pass on a mandrel with diameter of 162 mm and in two passes of piercing and rolling-off on mandrels with diameter of 76 and 162 mm, respectively. From the obtained data on the power parameters, it was found that from the point of view of energy consumption, piercing in one pass seems more appropriate. However, when piercing in one pass, wear resistance of the mandrels sharply decreases, since the contact time between the tool and the hot metal increases. This leads to a decrease in quality of the pipes’ inner surface, more frequent replacement of the tool and increased downtime of the equipment. During simulation, the selected parameter of the friction factor has a significant impact on the value of power parameters (torque and power consumption) and piercing time. The dependences of changing power parameters and piercing time on the friction factor during piercing in a two-roll mill with guards are obtained. With increase of the friction factor, piercing time decreases and torque and rolling power increase. The simulation results are correlated with results of experimental rolling. With a correctly chosen value of the friction factor, power parameters and geometry of the mold tube can be quite accurately predicted by computer modeling.
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Toporov, V. A., M. V. Chepurin, V. A. Parfenov, and A. I. Stepanov. "Skew rolling in the piercing of blanks." Steel in Translation 44, no. 6 (June 2014): 452–55. http://dx.doi.org/10.3103/s0967091214060163.

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Rakhmanov, S. R., Yu G. Gulyaev, and S. V. Zdanevich. "The dynamics of the centreing mechanism of piercing mill mandrel of the pipe-rolling plant." Computer Modeling: Analysis, Control, Optimization 7, no. 1 (2020): 51–63. http://dx.doi.org/10.32434/2521-6406-2020-1-7-51-63.

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The paper presents the results of the vibrodiagnostics of a centering machine mechanism for holding piercing mill mandrel N1 of the pipe-rolling plant (PRP) 350. In the paper, it is established that vibration acceleration of a bearing roller lever of the centering machine mechanism for holding piercing mill mandrel during milling of an Æ282х50 mm shell, steel 20 reaches 5…12 m/s2, and of the upper roller’s vibration frequency is 33.3 Hz. The paper presents the results of the thickness measuring of the Æ282х50 shell, steel 20 after using the piercing mill N1 350. The results shows the distinctive influence of the dynamics of the milling holding mechanism rod. The system is put forth for calculating the energy-power parameters during the realization of the technical process for making shells of the required specifications in a piercing mill. The paper establishes the value of the milling axial resistance to the flow of the milled metal (taking the calibration values into account). The paper presents a refined system for making a dynamic model for the piercing bill milling holding mechanism rod with the milling calibration parameters taken fully included. A differential equation for the milling rod movement is made, specifically for the dynamic model of the PRP piercing mill mechanical system. The dynamic values of the mechanical system are refined, which is used as a starting point for solving the tasks dealing with the analysis of the PRP piercing mill milling rod’s vibroactivity state. In order to decrease rod vibroactivity levels, the paper recommends choosing rational milling calibration and to set the shell milling modes using mechanical system dynamics modelling during the corresponding stages of the design of technological processes. The paper pro-poses a scheme for modernization of the PRP 350 piercing bill exit side by switching the centering machine rod system holding bridges gear to proportional hydraulics. Keywords: piercing mill, vibration diagnostics, thickness measurement, piercing, sleeve; difference in wall thickness, energy-power parameters, calibration, mandrel, vibroactivity, dynamics, mandrel retention mechanism.
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Rakhmanov, S. R. "VIBRATION PIERCING OF PIPE BILLET ON THE PIERCING PRESS OF PIPE-ROLLING MILL." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 61, no. 2 (March 6, 2018): 156–63. http://dx.doi.org/10.17073/0368-0797-2018-2-156-163.

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KOMORI, Kazutake, and Minoru SUZUKI. "Simulation of Deformation and Temperature in Piercing Rolling." Proceedings of The Computational Mechanics Conference 2003.16 (2003): 583–84. http://dx.doi.org/10.1299/jsmecmd.2003.16.583.

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Gamin, Yu V., B. A. Romantsev, A. N. Pashkov, P. V. Patrin, I. A. Bystrov, A. V. Fomin, and M. V. Kadach. "Obtaining hollow semi-finished products from copper alloys for electrical applications by screw rolling method." Izvestiya Vuzov. Tsvetnaya Metallurgiya (Universities' Proceedings Non-Ferrous Metallurgy), no. 1 (February 19, 2020): 27–38. http://dx.doi.org/10.17073/0021-3438-2020-1-27-38.

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The article proposes a process for obtaining semi-finished products in the form of pipes made of copper alloys for electrical applications using the screw rolling method. The paper presents the results of experimental piercing and rolling of pipe samples made of Cu–0.75Cr copper alloy billets with a diameter of 45 mm. The 43.5×10.0 mm samples obtained after piercing using a two-roll screw rolling mill had exact geometrical dimensions: outer diameter deviation at the front end was up to 1 %, at the back end – up to 2.4 %; relative variation in wall thickness at the front end was 0.3÷0.5 %, at the rear end – 0.5÷1.0 %. Then pierced pipe samples were rolled using a three-roll radial-shear rolling (RSR) mini mill with a different total degree of reduction – samples were obtained with an outer diameter of 30, 25 and 18 mm. The reduction process was analyzed from the point of view of internal hole stability and deformation. In case of 30 % relative reduction of the outer diameter, rolling without a mandrel is accompanied by wall thickening. In this case, inner diameter deviations are within acceptable limits. The experiments on obtaining samples from the Cu–0.75Cr alloy by screw piercing and reduction in the RSR mill show that this scheme can be implemented in principle in industry. At the same time it is necessary to define more exactly deformation parameters (degree of deformation, choice of reduction scheme) to obtain a quality product. Various options for heat treatment (HT) of the obtained pipe samples and the effect of the HT method on electrical conductivity and hardness are considered. Samples after piercing had a conductivity of 59.3 % IACS. The maximum electrical conductivity of 76.7 % IACS was obtained on samples after quenching from a temperature of 1020 °C and aging at 450 °C for 3 h. The results of the work show the fundamental possibility of obtaining semi-finished products from copper alloys for electrical purposes using the screw rolling method.
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LEE, HYOUNG WOOK, GEUN AN LEE, EUNG ZU KIM, and SEOGOU CHOI. "PREDICTION OF PLUG TIP POSITION IN ROTARY TUBE PIERCING MILL USING SIMULATION AND EXPERIMENT." International Journal of Modern Physics B 22, no. 31n32 (December 30, 2008): 5787–92. http://dx.doi.org/10.1142/s0217979208051170.

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Typical seamless tube production processes are an extrusion and a rotary tube piercing. The rotary piercing process is more competitive than the extrusion process from the viewpoint of flexibility. Main components of this equipment are twin rolling mills and a plug. Twin rolling mills are installed on a skew with proper angles in two directions. These angles are called the cross angle and the feed angle. The internal crack initiation and the growth at central area of the billet are gradually progressed due to the Mannesmann effects. The feed angle affects on the position of the crack initiation in the rotary tube piercing process. Adjustable design parameters in the equipment are the feed angle and the plug insertion depth. In this research, the rotary tube piercing equipment was developed. Finite element analyses with the plug and without the plug were carried out in order to predict the internal crack initiation position under good calculation efficiency. Ductile fracture models with the one variable equation were utilized to crack initiation criteria. The forward distance of the plug was determined to be 5 mm through the analysis. It was testified by experiments of a carbon steel billet.
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Gurulev, Dmitrii N., and Lyubov' V. Palatkina. "The Study of the Metal’s Flow Distribution during Rolling in Cutout Strikers for Different Schemes of the Stress State." Defect and Diffusion Forum 410 (August 17, 2021): 149–54. http://dx.doi.org/10.4028/www.scientific.net/ddf.410.149.

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In the forging industry, rolling is used to produce ring forgings, which are widely used in power and nuclear engineering. According to the technical conditions and established practice, large ring forgings are made using the operations of precipitation, piercing and rolling out with a striker on the mandrel.
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Korovin, V. S., A. N. Shashkov, O. I. Kom, A. G. Scheglov, S. V. Avdeev, Yu L. Gerasimov, and Yu L. Bobarikin. "IMPROVEMENT OF CALIBRATION OF CONE-SHAPED ROLLS OF THE PIERCING MILL OF THE PIPE-ROLLING SHOP." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 2 (July 4, 2017): 46–50. http://dx.doi.org/10.21122/1683-6065-2017-2-46-50.

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The increase in operational durability of the technological tools of the piercing mill in the pipe-rolling shop and decrease in deficiency of produced pipes due to improvement of calibration of cone-shaped rolls is considered in the article. Increase in durability the piercing mandrels is evaluated as 1,3–4,3 times when using calibration of cone-shaped rolls with a smaller corner of an output cone. Improvement of quality of external surface of produced pipes was made due to application of experimental ring calibration of rolls. It is shown that this calibration demands big expenses of energy at the piercing.
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Nikulin, A. N. "Metal flow during piercing on a helical rolling mill." Metallurgist 48, no. 9-10 (September 2004): 460–66. http://dx.doi.org/10.1007/s11015-005-0006-1.

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Dissertations / Theses on the topic "Rolling piercing"

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Hrycaj, Philippe. "Modélisation de la croissance de cavités et du contact unilatéral en viscoplasticité : Application au laminage perçage." Valenciennes, 1991. https://ged.uphf.fr/nuxeo/site/esupversions/cbbf12c1-7d8c-4d44-bd00-53f61a2576af.

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Lors des grandes transformations thermoviscoplastiques des aciers, on observe souvent sous l'influence des conditions de contact, une détérioration progressive avec l'apparition de zones ou les microcavités se développent plus rapidement qu'ailleurs. La prévision de la croissance des cavités est obtenue à partir d'un potentiel viscoplastique s'exprimant en fonction des contraintes. Des schémas implicites sont proposés pour le calcul de la déformation, de la température et de la fraction volumique de cavités. Le contact unilatéral tridimensionnel est modélisé par une méthode implicite de pénalisation de la forme variationnelle associée aux équations d'équilibre. Les contacteurs, mobiles en translation ou en rotation, sont discrétisés à partir de la bibliothèque de primitives, implémentée dans le programme de calcul par la méthode des éléments finis Astrid. Les modèles sont valides par comparaison à des solutions analytiques ou à des références expérimentales puis utilises pour le laminage perçage d'ébauches tubulaires. La carte des variables d'état est présentée pour différentes configurations de perçage et la répartition de la croissance de cavités est plus particulièrement analysée. En conclusion, l'auteur montre l'apport essentiel et les performances des modèles développés.
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Conference papers on the topic "Rolling piercing"

1

Katsumura, T., and H. Ota. "Effect of Rolling Conditions on Ductile Fracture During Piercing." In AISTech2019. AIST, 2019. http://dx.doi.org/10.33313/377/209.

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2

Yuqian Zhao, Enlin Yu, and Tao Yan. "Deformation analysis of seamless steel tube in cross rolling piercing process." In 2010 International Conference on Computer Design and Applications (ICCDA 2010). IEEE, 2010. http://dx.doi.org/10.1109/iccda.2010.5541258.

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Yoshida, Motohisa, F. Barlat, Y. H. Moon, and M. G. Lee. "3D FEM Simulation of Rolling Load Working on Piercer Plug in Mannesmann Piercing Process." In NUMIFORM 2010: Proceedings of the 10th International Conference on Numerical Methods in Industrial Forming Processes Dedicated to Professor O. C. Zienkiewicz (1921–2009). AIP, 2010. http://dx.doi.org/10.1063/1.3457538.

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Harrison, Benjamin, Lin Yuan, and Stelios Kyriakides. "Measurement of Lined Pipe Liner Imperfections and the Effect on Wrinkling and Collapse Under Bending." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54539.

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Carbon steel pipe is often lined with a thin layer of non-corrosive material to protect it against corrosion from sour hydrocarbons. The product is commonly assembled by mechanical expansion of a liner shell bringing it into contact with the inner surface of a seamless steel pipe. During installation and operation lined pipelines can experience bending or compression deformations large enough to cause the liner to buckle and collapse inside an intact outer pipe. It has been demonstrated that such buckling instabilities are very sensitive to small initial geometric imperfections in the liner [1–3]. Liner imperfections in 8- and 12-inch lined pipes have been measured using custom scanning devices and have been characterized by trigonometric Fourier series. Imperfection amplitudes large enough to significantly influence the collapse of the liner have been detected. The main source of the imperfections is the internal surface relief in the seamless outer pipe left behind by piercing, rolling and external finishing of the pipe. Dominant circumferential and axial imperfection waves are used in finite element models to demonstrate the detrimental effect of such imperfections on liner collapse under bending.
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Pussegoda, L. N., and V. Semiga. "Evaluating a Corrosion Assisted Pipeline Rupture." In 2010 8th International Pipeline Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ipc2010-31618.

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An in-service failure was associated with an NPS 12, 6.35 nominal wall API 5L X42 grade pipe. This segment of the pipeline had been in service since 1957 and had a tar coating. The pipe was manufactured by piercing followed by rolling/extrusion to produce a seamless pipe. The pipeline has always carried refined petroleum products. The rupture event was captured by pressure history records that recorded an overpressure experienced during a sudden valve closure event. The section of pipe removed included portions of the upstream and downstream pipe sections to carryout a failure investigation. The paper presents the findings from the investigation. The paper presents the observations from inspection and experimental testing carried out on the removed pipe section. These included NDE, fracture surface examinations and destructive examination such as metallography that helped in obtaining information on the reduction in the resistance of the material to withstand the in-service pressure conditions. The above observations together with results from mechanical testing was used to estimate failure pressures based on a “deterministic” primary flaw size, using assessment methods (ECA) applicable to the failure case under consideration. The investigation of the failure indicated that the major contributing factors were: (a) the corrosion feature at the failure site that reduced the remaining wall thickness below 2mm, and the overpressure caused by the valve closure down stream in the vicinity of the failure site. Pipe specification checks from material removed from the section of the failed pipe, indicate that the pipe meets the API 5L X42 specification requirements.
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