Relevant bibliographies by topics / Rolling mill rolls

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Rolling mill rolls'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Rolling mill rolls"

1

Peng, Rongrong, Xingzhong Zhang, and Peiming Shi. "Coupled Vibration Behavior of Hot Rolling Mill Rolls under Multinonlinear Effects." Shock and Vibration 2020 (June 10, 2020): 1–14. http://dx.doi.org/10.1155/2020/6104028.

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A coupled vibration model of hot rolling mill rolls under multiple nonlinear effects is established by considering the nonlinear spring force produced by the hydraulic cylinder, the nonlinear friction between the work rolls, the dynamic variation of rolling force, and the effect of external excitation as well as according to the structural constraints of a four-high hot rolling mill in the vertical and horizontal directions. The amplitude-frequency response equation of rolling mill rolls is determined by using a multiple-scale approximation method. Furthermore, use of actual data for simulation indicates that the internal resonance is the main cause of coupling vibration of the rolling mill rolls. In addition, changes in the movement displacement of the hydraulic cylinder and the coupling parameters strongly affect the coupling system of the rolling mill rolls. Finally, the study of the dynamic bifurcation characteristics of the rolling mill rolls indicates that, with varying external excitation amplitude, the vibration of rolls alternates between periodic motion, period-doubling motion, and chaotic motion in both vertical and horizontal directions. This is one of the reasons for the appearance of periodic light and dark stripes on the strip surface. Furthermore, the range of the external excitation amplitude (F0) at which the rolling mill roll system vibrates violently, that is, 5.68e5 N < F0 < 5.84e5 N and F0 > 6.12e5 N, must be avoided. The research results can provide a theoretical reference for further exploration of the coupling vibration mechanism of hot rolling mills.
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2

Liu, Peng, Hong Bo Li, and Zhi Qian Shen. "Technical Characteristics and Application for a New Type of 8-Roll Cold Rolling Mill." Advanced Materials Research 572 (October 2012): 55–60. http://dx.doi.org/10.4028/www.scientific.net/amr.572.55.

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This paper focuses on a new type of 8-roll cold rolling mill with the back-up bearing roll. Compared to the traditional 6-roll cold rolling mill, a thick-walled bearing roll is used to multi-support the intermediate roll. By the rack, the fan-shaped gears, the eccentric core shaft and the servo-cylinder, the work roll can be pushed down by this screw down device on the top of the mill; By contrast with the 4(6)-roll mill, this type of mill has some characteristics, such as: the small size of rolls, lighter weight, the fast response for the screw down. The bearing roll is fixed by the supporting blocks placed on the rolling-mill housing. So this mill has large traverse rigidity, and this is propitious to the flatness control. By different means of strip flatness adjustments, such as the intermediate roll shifting, the roll bending and the bearing roll adjusting, the strip flatness can be well controlled. The oil-gas lubrication is used in the bearings of the bearing rolls, and the changing rolls equipment is designed for this type of mill too. A series of this type of mills (as 450, 800, 1250, 1450 series) have been produced since it was developed in 1997. The mills for 1250 and 1450 series have been applied in five-stand cold rolling mill and single stand reversing mill, a rolling speed of 800m/min has been achieved.
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Brusa, E., L. Lemma, and D. Benasciutti. "Vibration analysis of a Sendzimir cold rolling mill and bearing fault detection." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 8 (December 9, 2009): 1645–54. http://dx.doi.org/10.1243/09544062jmes1540.

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The presence of several rolls in cluster cold rolling mills makes on-line vibration monitoring and failure analysis difficult. The dynamic behaviour of rolls strongly depends on the rolling pressure in the roll bite. Strip vibration applies a dynamic component on the rolling force acting on the work roll and may excite the resonance of the mill stand. This problem motivates predicting the cluster mill dynamics by using a numerical model. It may help in planning the maintenance operation of rolls and bearings and in reducing the service costs. A complete dynamic analysis of the cluster mill layout has seldom been proposed in the literature. In this article, the authors investigate the dynamic behaviour of a Sendzimir mill. A numerical simulator developed in the Matlab/Simulink environment is used to distinguish the effects of chattering, rolls unbalance, motor dynamic irregularities, and bearing fault. Analytical approaches proposed to compute the dynamic component of the rolling force are used as an input to excite the rolls vibration in the cluster mill simulator. Numerical results are used to interpret some preliminary experimental measures performed on the operating Sendzimir mill. Some goals were achieved. This investigation allowed the distinguishing of the dynamic effects due to the rolls from those related to the motor and bearings fault. Critical parameters used in the numerical model were identified. To complete this study, a fully instrumented cold rolling mill has to be used in order to measure all the dynamic signals required to detect the relevant phenomena that have to be prevented.
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4

Rubtsov, V. Yu, O. I. Shevchenko, and M. V. Mironova. "IMPROVING DYNAMIC REGIME OF ROLLING FOR INCREASING DURABILITY OF BALL-ROLLING MILL ROLLS." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 61, no. 12 (January 16, 2019): 927–32. http://dx.doi.org/10.17073/0368-0797-2018-12-927-932.

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One of the important reasons for the downtime of ball rolling mills is replacement of rolls due to their wear and tear. The degree and zones of critical wear of ball rolling rolls are investigated in the article, where the greatest wear is observed over the flanges in zone of billet capture. Conditions necessary to capture the blank and to perform rolling process are analytically determined. Variable frequency method of roll rotations is proposed as a progressive technology for blank supply. The results of tests for its variations in accordance with linear and quadratic law are presented. Known formulas determining average strain rate at rolls rotational speed change are converted for linear and quadratic dependences. Experimental studies have been carried out in conditions of EVRAZ Nizhnetagilsky Metallurgical Plant ball rolling mills during rolling of 60mm ball made of Sh-3G steel. Experiments were performed for given parameters of manual change in rolls rotation speed at blank capture by rollers. The results have shown a significant effect of change in rotational speed on average specific pressure during blank capture. Evaluation of torque-time and average contact pressure for calculated and experimental data are presented. Empirical characteristics are also described at variable rotational speed of rolls according to linear and quadratic law. Acceptable convergence of results of calculated and empirical characteristics is determined. Engineering solution has been proposed for that task. It consists in installation of a thyristor converter. This solution allows reduction of rolls speed before blank capture. Also, this solution will increase frequency to the nominal value according to the given law after blank capture. As an obtained result, there is uniform distribution of average contact pressure over the entire length of the roll under different operating conditions of mill in automatic mode. Application of this technique will reduce wear degree of the rolling tool. At the same time, productivity of ball rolling mill will be maintained. Rolls consumption and number of rolls change will decrease due to rolls wear.
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Kuroda, K., T. Kuboki, Y. Imamura, and C. Hayashi. "Design evaluation of multiroll mills for small-diameter wire rolling." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 215, no. 1 (January 1, 2001): 77–86. http://dx.doi.org/10.1243/0954406011520535.

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A comprehensive study on the evaluation of mill designs was carried out for three types of multiroll mill for wire rolling by using both prototype mills and numerical experiments. The laboratory experiments were carried out in order to examine both the deformation and loading characteristics of two-, three- and four-roll mills using a set of rolls of the same diameter. As a result, the data allow a direct comparison of the rolling characteristics among the three types of mill, which is not found in previous work. The analytical results showed a good matching with the experimental results, and evaluation was then carried out on the three mills. It has been found that the four-roll mill ensures the highest reduction and the two-roll mill the lowest reduction under the restriction that certain dimensional precision of the rolled wire be maintained. This tendency becomes greater as wire diameter decreases and in practice it is recommended that a four-roll mill equipped with small-diameter rolls be used when rolling small-diameter wire. As regarding the loading characteristics, similar conclusions apply. Finally, domains were determined where four-roll mills show their marked superiority.
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Budnikov, A. S., B. A. Romantsev, and E. A. Kharitonov. "Determination of rolls diameter for screw-rolling mills." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 61, no. 9 (October 21, 2018): 683–88. http://dx.doi.org/10.17073/0368-0797-2019-9-683-688.

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The problem of determining the maximum diameter of working rolls is typical for screw rolling mills that have more than two working rolls. Precise determination of the working roll diameter is especially important for three-roll mills, which are widely used in such industries as rolling and calibration, and radial-shear rolling mills operating at large feeding and rolling angles. Typically, the diameter of working rolls is determined in a constructive way or using 3D modeling. These methods are quite complex, require special skills, and do not allow investigation of the influence of main tuning mill factors such as feeding and rolling angles. There is a calculated method for determining the diameter of the roll barrel for a three-roll mill, but it is applicable for mills working at feeding angles of up to 10 degrees and rolling angles of 4 – 7 degrees. In conditions of radial-shear rolling, this method is not used, since it does not take into account the influence of feeding and rolling angles on which the conditions of the deformation process, manufacturability and quality of the products depend. The article considers a more general method for determining the diameter of working rolls of three or more rolling mills, taking into account their rotation at the feeding and rolling angles. The relationship between diameter of the rolls, their number, minimum diameter of the deformation center, the feeding and rolling angles are shown, which makes it possible to evaluate the structural capabilities of both three and four-roll rolling mills. The results of the presented work make it possible to expand the possibilities for further studies of the technology and equipment of three-roll screw rolling mills for the production of solid and hollow products using completely new deformation modes for the processes of rolling out hollow products of their reduction as well as radial shearing rolling. Importantly, it is possible to supplement existing knowledge about the change in geometry of deformation center, and also to predict geometric parameters of the working rolls of the projected multi-roll mills for given rolled products sizes.
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Peng, Rongrong, Xingzhong Zhang, and Peiming Shi. "Vibration Characteristics of Hot Rolling Mill Rolls Based on Elastoplastic Hysteretic Deformation." Metals 11, no. 6 (May 26, 2021): 869. http://dx.doi.org/10.3390/met11060869.

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Based on the analysis of the influence of roll vibration on the elastoplastic deformation state of a workpiece in a rolling process, a dynamic rolling force model with the hysteresis effect is established. Taking the rolling parameters of a 1780 mm hot rolling mill as an example, we analyzed the hysteresis between the dynamic rolling force and the roll vibration displacement by varying the rolling speed, roll radius, entry thickness, front tension, back tension, and strip width. Under the effect of the dynamic rolling force and considering the nonlinear effect between the backup and work rolls as well as the structural constraints on the rolling mill, a hysteretic nonlinear vertical vibration model of a four-high hot rolling mill was established. The amplitude-frequency equations corresponding to 1/2 subharmonic resonance and 1:1 internal resonance of the rolling mill rolls were obtained using a multi-scale approximation method. The amplitude-frequency characteristics of the rolling mill vibration system with different parameters were studied through a numerical simulation. The parametric stiffness and nonlinear stiffness corresponding to the dynamic rolling force were found to have a significant influence on the amplitude of the subharmonic resonance system, the bending degree of the vibration curve, and the size of the resonance region. Moreover, with the change in the parametric stiffness, the internal resonance exhibited an evident jump phenomenon. Finally, the chaotic characteristics of the rolling mill vibration system were studied, and the dynamic behavior of the vibration system was analyzed and verified using a bifurcation diagram, maximum Lyapunov exponent, phase trajectory, and Poincare section. Our research provides a theoretical reference for eliminating and suppressing the chatter in rolling mills subjected to an elastoplastic hysteresis deformation.
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Romantsev, B. A., E. A. Kharitonov, A. S. Budnikov, Van Chong Le, and Ba Khyui Chan. "SCREW ROLLING OF PIPES IN A FOUR-HIGH ROLLING MILL." Izvestiya. Ferrous Metallurgy 62, no. 9 (October 23, 2019): 686–90. http://dx.doi.org/10.17073/0368-0797-2019-9-686-690.

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A model of four-high screw rolling mill was developed and manufactured with the help of additive technologies. The work rolls are installed: the main ones – by cup-shaped scheme and auxiliary – by mushroom scheme with an angle of rolling of ±7 degrees, with an unregulated feed angle of 15 degrees. The main and auxiliary rolls have a barrel length of 70 mm. Diameter of the main rolls in pinching is 50 mm, of auxiliary rolls – 36 mm. At the exit in cross section of the tube outlet from the rolls, their diameters are almost the same and are 72 mm. Each of the four rolls is driven by an individual drive with a 100 W motor-reducer and a rotational speed of 60 rpm by a mushroom scheme and of 83 rpm by a cup-shaped one, which minimizes the divergence of peripheral speeds in the deformation zone at different roll diameters. On the developed model of four-high rolling mill, rolling of liners from plasticine with a diameter of 25 mm with a wall thickness of 7.5 was carried out; 5.5 and 3.5 mm, corresponding to the ratio of diameter to wall thickness 3; 5 and 8. Pipe rolling was carried out on floating mandrels with diameters of 9, 13 and 17 mm. After rolling, measurements of the diameter and wall thickness of the pipes were carried out in 5 cross sections that were equally spaced from each other. In each cross section, the diameter was measured at 5, and the wall thickness at 10 points. The finite element method has been used to simulate the process of rolling these pipes in the QForm program. Assessment of the model adequacy was carried out by comparing the size of pipes and their accuracy after rolling with the results of computer simulation. When rolling at a four-high rolling mill, the wall thickness is significantly reduced.
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Chen, Ze Jun, Guang Jie Huang, Jian Jun Min, and Boa Hua Qian. "The Development of Short Stress Path Experimental Asymmetric Multifunctional Rolling Mill." Advanced Materials Research 145 (October 2010): 171–76. http://dx.doi.org/10.4028/www.scientific.net/amr.145.171.

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This paper describes the development and design of a novel short stress path rolling mill which is used for teaching and research. The rolling mill can implement the asymmetric rolling by the way of the adjustment of upper roll speed, and also working as conventional rolling when the roll speeds of two rolls are equal. The rolling mill can produce not only the plate and sheet, but also profiles by the roll of different grooves. The rolling mill is appropriate for the rolling of the steels and nonferrous metals. In this paper, the design ideas and main parameters of principal components are presented with respect to the new rolling mill. It can provide references for the design and manufacture of rolling mill of similar functions and structures.
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Mauer, Paul, Bernhardt Weyh, and Paul Josef Mauk. "Hybrid Calculations of Bending Deformations for 20 Roll Cold Rolling Mill." Key Engineering Materials 716 (October 2016): 856–63. http://dx.doi.org/10.4028/www.scientific.net/kem.716.856.

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In multi-high mills, the slim fixed floating work rolls are supported by primary and secondary intermediate rolls and several supporting rolls mounted pairs-wise on supporting shafts. Over the eccentric adjustment of saddle assemblies and hydraulic adjustment device the roll gap adjusts the specific elastic bending deformation of the support system. Based on a hybrid calculation model the influence and limits of an active adjustment device for 20 roll mill will be presented. Thereby the bending deformations as well as the contact deformations of the complete system including the forming process in settings of the elementary plasticity theory (EPT) will be considered.The modeling of the bending deformations of the roll systems are based on FE-Beam elements. The flattening in the contact zone between the rolls will be formulated by a modified non-linear approach, according to Hertz-Johnson. The contact of the deformed zone is aligned in the discretized EPT-roll model by Alexander with Hitchcock-flattening. The iterative analysis of the compact models leads to “force-deformation-relations”, which provides the influence of the variation of the gap. The force-deformation-relations will be detailed discussed in parameter studies of a real 20 roll mill.
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Dissertations / Theses on the topic "Rolling mill rolls"

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Ye, Xing. "Thermal crown development in hot strip mill work rolls and the role of spray cooling." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30124.

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The objective of this investigation was to determine the influence of work roll cooling on roll thermal behavior. The investigation has been conducted utilizing a previously developed computer model [1]. Three industrial operations were evaluated and features of an optimum configuration have been identified. The magnitude of the thermal zone near the roll surface within which the cyclic temperature variation is confined has been evaluated for different roll cooling conditions. A two dimensional thermal model of a work roll has been developed to predict the thermal field inside the roll, based on which the thermal crown of the roll was calculated under an assumption of axi-symmetric deformation. The heat transfer equation was solved by the numerical finite difference method, the Alternating Direction Implicit (ADI) method. This method makes it possible to solve the problem on a personal computer making it suitable for industrial application due to the minimum requirements of computer storage and time. Also because the thermal model simulates operating conditions including the cooling configuration it is of value in studying a variety of industrial rolling conditions. The influence of roll spray arrangement, roll gap heat transfer and mill pacing on roll thermal crown has been investigated.
Applied Science, Faculty of
Materials Engineering, Department of
Graduate
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2

Wright, Benjamin Peter. "Thermal behaviour of work rolls in the hot mill rolling process." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/36081/.

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This project continues the work of Daniel White which culminated in the thesis, "A Hot Strip Mill Work Roll Temperature Model", submitted to Cardiff University in 2007. The current project presents a combined thermal solution, incorporating a transient, two-dimensional model which predicts changes in the circumferentially averaged temperature profile with time, and a static, three-dimensional model which provides high-resolution results near the surface of the roll and uses the results of the two-dimensional model as boundary conditions. The material properties of both models can now exhibit temperature dependency and boundary conditions at the surface have been improved. The resolution of the static model has been increased dramatically after testing found that the temperature profile was being compromised. The stress models use ABAQUS, a finite element software package, and have been completely redesigned. The stress solution consists of three models, each successive model concentrating more resolution on the roll bite, using the sub-modelling technique. Temperature data is imported from the thermal models, mechanical loads are applied using process data taken from the hot mill database at Port Talbot and residual loads are applied using the best currently available experimental data. Residual and thermal stresses were found to be significant, but the mechanical loads made little difference to the peak or minimum stresses per roll revolution. A brief investigation showed that, for a high-reduction rolling schedule (40% reduction rates), increasing the work roll oxide layer thickness from 3μm to 10μm decreases the cyclic stress range by roughly 100MPa. Taking account of temperature variability in the material properties also made roughly 100MPa difference to the stress range. The radial temperature distribution in the roll was shown to have a strong effect on the stresses at the roll surface, with a cold roll core incurring large peak stresses for the same circumferential temperature profile.
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Cornélio, Gilson Teixeira. "Caracterização de materiais utilizados na fabricação de cilindros de laminação submetidos ao desgaste abrasivo /." Guaratinguetá : [s.n.], 2006. http://hdl.handle.net/11449/97099.

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Resumo: O avanço da tecnologia de laminação incrementou as solicitações sobre os cilindros laminadores, e, portanto, o desenvolvimento de materiais mais resistentes ao desgaste, visando aumento da produtividade do laminador e melhor qualidade superficial dos produtos laminado, em especial tiras a quente. Como estudo de desgaste em campo é muito complexa devido à influência de diversos mecanismos e muitas vezes combinados entre si, os ensaios laboratoriais têm se mostrado como um meio mais fácil para estudar os materiais em serviço, além de auxiliar o projeto novas ligas. Dessa forma, foi proposto um ensaio de desgaste abrasivo puro para um tribômetro Plint & Partners, modelo TE-079, com o intuito de simular condições de utilização das últimas cadeira do trem acabador de um laminador de tiras a quente. Para sua validação foram utilizados três materiais: o ferro fundido de coquilhamento indefinido, o ferro fundido branco de alto cromo e o ferro fundido branco multicomponente, os quais apresentam comportamento conhecido em serviço. Esses materiais foram submetidos a uma caracterização metalográfica, microdureza e topografia de desgaste. Os resultado obtido mostraram-se coerentes com a prática observada na aplicação real, ou seja, reproduziram o comportamento de desgaste no laminador, sendo válida a proposta do ensaio tribológico.
Abstract: The progress towards mill technology has increased the demand on the rolling mill rolls, and therefore, the development of wear resistant seekink productivity of the rolling mills and better superficial quality of the rolled products, especially in the hot strip mill has also increased. As the wear study in field is very complex due to the influence of several mechanisms wish are usually combined amongst themselves, the labs test have shown an easy way to study the materials in service, besides aiding the project of new leagues. In that way, a pure abrasive wear test was developed tribômetro Plint & Partners, model TE-079 with the intent of simulating the job conditions in the hot strip mill finishing chairs. For the validation three materials were used: an indefinite chill cast iron, a high chrome cast iron and a kind of multicomponent white cast iron, which presents knowm behavior in service. Those materials were submitted to a metallography characterization, microhardness measurement and wear topograpy observation. The obtained results were shown coherent with the practice observed in the real application, and then became possible a prediction of that behavior for the materials projects developed at laboratory, being valid the proposal of the rehearsal tribológico.
Orientador: Valdir Alves Guimarães
Coorientador: Amilton Sinátora
Banca: Gustavo Aristides Santana Martínez
Banca: Enrico José Giordani
Mestre
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Gonçalves, Camilla Gandine. "Análise de variáveis dinâmicas na fundição centrifugada de cilindros de laminação /." Guaratinguetá : [s.n.], 2011. http://hdl.handle.net/11449/97049.

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Orientador: José Geraldo Trani Brandão
Banca: Fernando de Azevedo Silva
Banca: Paulo Cesar Ribeiro Quintairos
Resumo: Este estudo mostra as variáveis dinâmicas do processo de fundição centrífuga de cilindros de laminação, que são utilizados para realização de conformação em gaiolas de laminação. O objetivo desse estudo é analisar as principais variáveis dinâmicas do processo de fundição centrifugada de cilindros de laminação e estudar as relações entre estas variáveis. Os processos de fundição centrífuga podem ser classificados em fundição centrífuga vertical e horizontal. Para a fundição centrífuga vertical, são elaborados os envelope de carga de dois modelos de máquinas centrífugas verticais existentes na literatura, onde se consegue determinar o tipo de rolamento de apoio utilizado na máquina. Para a fundição centrífuga horizontal, são estudadas variáveis como rotação, razão G, "aspect ratio", espessura e vibração de uma amostra de aproximadamente 1.000 cilindros de ferro fundido, aço rápido e aço alto cromo. Desta amostra, verifica-se que a causa de sucateamento de parte dos cilindros não está ligada a adoção de variáveis dinâmicas incorretas no processo. Também é visto que diferentemente do alumínio, os cilindros de ferro fundido, aço rápido e aço alto cromo exigem maior rotação quanto maior a espessura da casca fundida.
Abstract: This paper shows the dynamic variable of centrifugal casting process of rolling mill rolls which are used to compress the metal in rolling mill process. The main goal is to analyze the main dynamic variable and to study its relation in the process. There are two type of centrifugal casting: horizontal and vertical. For the horizontal centrifugal casting, two load envelopes are done, being possible to determine the bearing model used on the vertical centrifugal casting machine. For the horizontal centrifugal casting, variable such as rotating, ratio G, aspect ratio, thickness and vibration are studied to a sample of 1,000 casting rolls made of casting iron, high speed steel and high chromium steel. From this sample, it is seen that the cause of scrapping is not related to incorrect adoption of dynamic variables in the process. It is also verified that differently from the aluminum, cast iron, high speed steel and high chrome steel rolls demand greater speed with the increasing the shell casting thickness.
Mestre
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Johannesson, Jonas. "Design and function of CVC rolls as a flatness actuator in a cold rolling mill." Thesis, KTH, Materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-94031.

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When cold rolling thin steel strips with high tensile strength, reversible cluster mills are used. The customer’s demands are high on the products flatness, which is controlled by the different flatness actuators that the mill is equipped with. The objective of this thesis was to find an optimal CVC shape on the shifting inner second intermediate roll in the 20-high cluster mill KV96 at Sandvik Materials Technology in Sandviken. The project consisted of a theoretical calculation of the roll shape that can give the desired change of the strips flatness and practical development and testing of these rolls in the mill. The results showed that the flatness of the strips can be altered with up to 30 I-units at the edges and 20 I-units in the center with the use of an inner second intermediate roll of the CVC type as this study has concluded. In this work, three CVC shapes was developed using the calculation software Cluster. The rolls was then ground and verified in the mill.
Vid kallvalsning av tunna band med hög hållfasthet används reversibla mångvalsarsverk. Kundkraven är höga på produkternas planhet, vilken styrs av de planhetsställdon verket är utrustat med. Målsättningen med detta examensarbete var att finna en optimal CVC-form på den förskjutningsbara inre mellanvalsen i 20-valsarsverket KV96 vid Sandvik Materials Technology AB i Sandviken. Projektet har bestått av att teoretiskt beräkna den valsform som kan ge den önskade förändringen i planhetsmätarbilden samt att praktiskt ta fram och prova dessa valsar i verket. Resultaten visar att man kan påverka planheten på banden med upp till 30 I-enheter i kanten och 20 I-enheter i mitten med användandet av en inre mellanvals av CVC-typ som denna studie kommit fram till. I det här arbetet utvecklades, med hjälp av beräkningsprogrammet Cluster, tre CVC-valsgeometrier som sedan slipades fram och verifierades i valsverket.
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Gonçalves, Camilla Gandine [UNESP]. "Análise de variáveis dinâmicas na fundição centrifugada de cilindros de laminação." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/97049.

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Este estudo mostra as variáveis dinâmicas do processo de fundição centrífuga de cilindros de laminação, que são utilizados para realização de conformação em gaiolas de laminação. O objetivo desse estudo é analisar as principais variáveis dinâmicas do processo de fundição centrifugada de cilindros de laminação e estudar as relações entre estas variáveis. Os processos de fundição centrífuga podem ser classificados em fundição centrífuga vertical e horizontal. Para a fundição centrífuga vertical, são elaborados os envelope de carga de dois modelos de máquinas centrífugas verticais existentes na literatura, onde se consegue determinar o tipo de rolamento de apoio utilizado na máquina. Para a fundição centrífuga horizontal, são estudadas variáveis como rotação, razão G, “aspect ratio”, espessura e vibração de uma amostra de aproximadamente 1.000 cilindros de ferro fundido, aço rápido e aço alto cromo. Desta amostra, verifica-se que a causa de sucateamento de parte dos cilindros não está ligada a adoção de variáveis dinâmicas incorretas no processo. Também é visto que diferentemente do alumínio, os cilindros de ferro fundido, aço rápido e aço alto cromo exigem maior rotação quanto maior a espessura da casca fundida.
This paper shows the dynamic variable of centrifugal casting process of rolling mill rolls which are used to compress the metal in rolling mill process. The main goal is to analyze the main dynamic variable and to study its relation in the process. There are two type of centrifugal casting: horizontal and vertical. For the horizontal centrifugal casting, two load envelopes are done, being possible to determine the bearing model used on the vertical centrifugal casting machine. For the horizontal centrifugal casting, variable such as rotating, ratio G, aspect ratio, thickness and vibration are studied to a sample of 1,000 casting rolls made of casting iron, high speed steel and high chromium steel. From this sample, it is seen that the cause of scrapping is not related to incorrect adoption of dynamic variables in the process. It is also verified that differently from the aluminum, cast iron, high speed steel and high chrome steel rolls demand greater speed with the increasing the shell casting thickness.
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Cornélio, Gilson Teixeira [UNESP]. "Caracterização de materiais utilizados na fabricação de cilindros de laminação submetidos ao desgaste abrasivo." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/97099.

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O avanço da tecnologia de laminação incrementou as solicitações sobre os cilindros laminadores, e, portanto, o desenvolvimento de materiais mais resistentes ao desgaste, visando aumento da produtividade do laminador e melhor qualidade superficial dos produtos laminado, em especial tiras a quente. Como estudo de desgaste em campo é muito complexa devido à influência de diversos mecanismos e muitas vezes combinados entre si, os ensaios laboratoriais têm se mostrado como um meio mais fácil para estudar os materiais em serviço, além de auxiliar o projeto novas ligas. Dessa forma, foi proposto um ensaio de desgaste abrasivo puro para um tribômetro Plint & Partners, modelo TE-079, com o intuito de simular condições de utilização das últimas cadeira do trem acabador de um laminador de tiras a quente. Para sua validação foram utilizados três materiais: o ferro fundido de coquilhamento indefinido, o ferro fundido branco de alto cromo e o ferro fundido branco multicomponente, os quais apresentam comportamento conhecido em serviço. Esses materiais foram submetidos a uma caracterização metalográfica, microdureza e topografia de desgaste. Os resultado obtido mostraram-se coerentes com a prática observada na aplicação real, ou seja, reproduziram o comportamento de desgaste no laminador, sendo válida a proposta do ensaio tribológico.
The progress towards mill technology has increased the demand on the rolling mill rolls, and therefore, the development of wear resistant seekink productivity of the rolling mills and better superficial quality of the rolled products, especially in the hot strip mill has also increased. As the wear study in field is very complex due to the influence of several mechanisms wish are usually combined amongst themselves, the labs test have shown an easy way to study the materials in service, besides aiding the project of new leagues. In that way, a pure abrasive wear test was developed tribômetro Plint & Partners, model TE-079 with the intent of simulating the job conditions in the hot strip mill finishing chairs. For the validation three materials were used: an indefinite chill cast iron, a high chrome cast iron and a kind of multicomponent white cast iron, which presents knowm behavior in service. Those materials were submitted to a metallography characterization, microhardness measurement and wear topograpy observation. The obtained results were shown coherent with the practice observed in the real application, and then became possible a prediction of that behavior for the materials projects developed at laboratory, being valid the proposal of the rehearsal tribológico.
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Darth, Pontus. "Simulation of Rolling Mill to Computeand Improve Load Distribution." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-85595.

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This master thesis was done at Swerim AB in cooperation with SSAB and the Technical University of Luleå in the purpose of preventing spalling problems in hot rolling mills. Spallings are a fatigue damage that occurs on the rolls due to extreme loads and unfavorable conditions between the rolls in a mill. This report describes how the roughing mill, which is the first of a series of hot rolling mills is modelled and simulated in order to compute and improve the load distribution between the rolls. The load distribution tells a lot where the spalling problems occurs. By computer aided design and simulations with the finite element method a parametric computational model was created and used to simulate the load distribution between the work roll and backup roll with worn andfresh rolls. These simulations showed what the load distribution looks like when using new rolls and that the load distribution is especially bad when the work roll is worn. The computational model was used to simulate how the load distribution changes with different geometries on the backup roll to provide valuable input and suggest new designs on the backup roll currently used by SSAB Borlänge.
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Tahir, Mohammed. "Some aspects on lubrication and roll wear in rolling mills." Doctoral thesis, KTH, Production Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3640.

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The thesis is focused on lubricants and roll wear in striprolling.

Regarding lubricants, the possibility of introducing newones, which are less detrimental towards environment, isstudied in laboratory scale. This is done for cold rolling,both of an Al- alloy and a low carbon steel. The lubricationperformance of such newly developed–water-based–synthetic lubricants is compared with currently used mineraloils and emulsions. By using the experimental method of"forward slip" measurements combined with slab methodcalculations and FE- simulations, friction coefficients areevaluated for different single pass reductions. Lubricantsbearing capacity and the product surface roughness are alsoevaluated. The results are encouraging.

A synthetic water-based lubricant, used in the cold rollingof an Al- alloy, showed good lubrication capability, betterthan the mineral oil but worse than the emulsion. The rolledAl- strip finish was found to be finest for the syntheticlubricant followed by the mineral oil and the emulsion. Similarresults were obtained from the steel rolling. Here foursynthetic lubricants were compared with two mineral oils andone emulsion. The best lubricant was found to be one of thewater-based synthetics, showing the lowest value of thefriction coefficient and a smooth product surface.

The aim of the wear study is to develop an accurateroll-wear prediction for hot strip finishing mills, which takesmore influential parameters into account. A new model of higheraccuracy is presented. This model is based on a large amount ofproduction campaigns. The strategy of the work is describedbelow.

After a comprehensive literature study a promising modelstructure was found. The corresponding equation is tested ontwo hot strip mills. Predicted wear is found to be inqualitative agreement with industrial experience and measuredwear. Thus the structure–taking the influence of back-uprolls into account–was chosen for further development.This was done on behalf of results obtained from one mill builtup by six stands and three different work-roll materials.Campaigns of "mixed" and "similar" strip grades were used. Theobtained model is tested successfully in two other hot stripmills.

Contradictory to the currently used on-line model, the newmodel takes the work roll flattening and back-up rolls contactarea into consideration. Also the influence of strip- and workroll grades is included. The model enables increased rolledstrip length and prolonged lifetime of the rolls, because ofimproved process control. Further more, grinding cost and timefor roll changing can be minimized. Of course thesepossibilities should result in considerable energy saving.

Keywords:Strip rolling, lubricants, environment, rollwear modeling, production campaigns, regression analysis

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Li, Fan. "Thermo-elasto-plastic modelling of heat treatment processes with particular reference to large steel rolls." Thesis, Queen Mary, University of London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299075.

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Books on the topic "Rolling mill rolls"

1

Kashchenko, F. D. Prokatnye valki s litymi ruchʹi͡a︡mi. Moskva: "Metallurgii͡a︡", 1987.

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Lee, Gene E. Rolls for the metalworking industries. Warrendale, PA: ISS/Iron & Steel Society, 2002.

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Minkin, A. V. Raschet sistem vyti͡a︡zhnykh kalibrov. Moskva: "Metallurgii͡a︡", 1989.

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Treĭger, E. I. Povyshenie kachestva i ėkspluatat͡s︡ionnoĭ stoĭkosti valkov listovykh stanov. Moskva: "Metallurgii͡a︡", 1988.

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Mogilev, V. K. Povyshenie stoĭkosti izlozhnit͡s︡ i prokatnykh valkov. Moskva: "Metallurgii͡a︡", 1986.

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Build a slip roll machine. Forland, MO: V.R. Gingery, 1993.

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Borovik, L. I. Raschet uprugikh deformat͡s︡iĭ i vybor diametrov valkov mnogovalkovykh stanov. Moskva: "Metallurgii͡a︡", 1991.

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Peiffer, M. Schutzeinrichtungen an Maschinen mit Walzeneinzugstellen: Beispielsammlung. Dortmund: Bundesanstalt für Arbeitsschutz, 1987.

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Chapman, Malcolm David. The development of a direct roll gap measurement system for the longitudinal strip thickness control of cold rolling mills. [Poole]: Dorset Institute of Higher Education and Davy Mckee (Poole) Limited, 1987.

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Seminario ILAFA Cilindros para Trenes de Laminación (3rd 1988 Monterrey, Mexico). Cilindros '88: Trabajos presentados al III Seminario ILAFA Cilindros para Trenes de Laminación, organizado por el Instituto Latinoamericano del Fierro y el Acero, ILAFA, con la colaboración de la Cámara Nacional de la Industria del Hierro y del Acero, CANACERO, 6 al 9 de marzo de 1988, Monterrey (N.L.), México = Rolls '88 : papers presented to the III ILAFA Rolling Mill Rolls Seminar, organized by the Instituto Latinoamericano del Fierro y el Acero, ILAFA, with the collaboration of the Cámara Nacional de la Industria del Hierro y del Acero, CANACERO, March 6-9, 1988, Monterrey (N.L.), Mexico. [Santiago, Chile?]: ILAFA, 1988.

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Book chapters on the topic "Rolling mill rolls"

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Magnee, A., M. Dubois, D. Assaker, M. Hogge, C. Gaspard, and J. P. Breyer. "Analysis of Residual Stresses in Rolling Mill Rolls." In International Conference on Residual Stresses, 644–49. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1143-7_108.

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Shigaki, Yukio, and Marcos Antonio Cunha. "Online Prediction of Wear on Rolls of a Bar Rolling Mill Based on Semi-Analytical Equations and Artificial Neural Networks." In Advances in Intelligent Systems and Computing, 243–53. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00930-8_22.

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Barkov, L. A., M. N. Samodurova, and D. P. Galkina. "Rolling of Refractory Metals on Four-Roll Passes Rolling Mills." In Proceedings of the 4th International Conference on Industrial Engineering, 1929–35. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95630-5_207.

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Fujita, Hideo, Jun Funakoshi, Suejiro Yosino, Yutaka Nakai, and Takao Mihara. "The Development of the Composite Rolls for Hot Rolling Mills by Hiping." In Hot Isostatic Pressing— Theory and Applications, 253–58. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2900-8_39.

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Aljabri, A., Z. Y. Jiang, D. B. Wei, X. D. Wang, and H. Tibar. "Modeling of Thin Strip Profile during Cold Rolling on Roll Crossing and Shifting Mill." In Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing, 3001–7. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-48764-9_371.

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Aljabri, A., Z. Y. Jiang, D. B. Wei, X. D. Wang, and H. Tibar. "Modeling of Thin Strip Profile during Cold Rolling on Roll Crossing and Shifting Mill." In PRICM, 3001–7. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118792148.ch371.

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Aridi, Mohd Radzi, Nao-Aki Noda, Yoshikazu Sano, Kakeru Takata, and Sun Zifeng. "Effect of the Residual Stress to the Fatigue Failure of the Bimetallic Work Roll in 4-High Rolling Mill." In Springer Proceedings in Materials, 389–93. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76481-4_33.

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Overhagen, Christian. "A Fast Computational Model for the Local Stress Distribution and Mechanical and Thermal Work Roll Deformations with Effects on Strip Profile and Flatness During Hot Rolling of Strip in Four-High Mills." In Forming the Future, 2483–96. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75381-8_205.

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Roberts, William L. "Mill Rolls and Their Bearings." In Cold Rolling of Steel, 109–86. Routledge, 2017. http://dx.doi.org/10.1201/9781315139661-4.

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Ettler, Pavel. "AN ADAPTIVE CONTROLLER FOR SKODA TWENTY-ROLLS COLD ROLLING MILLS." In Adaptive Systems in Control and Signal Processing 1986, 227–30. Elsevier, 1987. http://dx.doi.org/10.1016/b978-0-08-034085-2.50042-0.

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Conference papers on the topic "Rolling mill rolls"

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Shen, Guangxian, Yongjiang Zheng, and Ming Li. "Development of Statically Determinate Plate Rolling Mills Based on Micro-Scale Parameters." In ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/msec2012-7311.

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Contemporary plate rolling mills and pinch pass mills, which are unstable during the rolling process, are all statically indeterminate structures influenced by micro-scale parameters. The micro-scale parameters include bending deformations of the rolls and the side clearances between the chocks and the side surfaces of the housing window. All these are less than 1 mm, and they have an important effect on the skeletal structure of the roll systems of the mill. If the influence of micro-scale parameters is not considered in the design of the rolling mill, the skeletal structure of the roll system is incomplete and lacks kinematic links and pairs. The statically indeterminate nature of traditional rolling mills results in numerous disadvantages, including the frequent burning loss of the end-thrust bearing caused by excessive axial forces, the lateral movement of the strip owing to the deviation of the rolling load acting on the both ends of backup roll, the short service life of the four-row radial roller bearings on the back-up roll, and the quality of product tends to deteriorate due to the unstable operation of the control system, to mention a few. Because of the flattening effect between the rolls, the setting of the offset distance does not achieve the desired purpose and leads to the deviation of rolling load due to the asymmetric cross between the roll axes. To alleviate the above shortcomings, a new type of rolling mill with a statically determinate structure in which the horizontal offset distance between the roll axes is set to zero is thus proposed. In order to keep the rolls parallel and prevent cross between the rolls, a thrust device is designed, which also ensures sufficient free space to allow convenient roll replacement and allow for the thermal expansion of the chocks. In addition, back-up roll systems with component force bases as well as intermediate roll systems are designed in accordance with the theory of statically determinate characteristics with micro-scale parameters.
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Zhang, Feng, and Arif S. Malik. "Efficient Prediction of Contact Behavior in a 6-High Rolling Mill With Continuously Variable Crown Intermediate Rolls." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-3058.

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Continuously Variable Crown (CVC) shifting mechanisms represent a control technology with wide range of capability to influence the thickness profile and flatness (shape) of metal strip and sheet in rolling-type manufacturing processes. Further, because of the efficiency and extensive control capability to operate on thin-gauge, high-strength ferrous alloys, the 6-high mill with CVC profiles machined onto the intermediate rolls (IR) represents a popular mill configuration. This is because of the large control range for the strip thickness profile and flatness, which results from lateral shifting of the CVC intermediate rolls. However, together with this efficiency and capability comes very complex contact behaviors between the rolls and strip, including highly non-linear contact force distribution, loss of contact, asymmetric roll wear, unwanted strip wedge profiles, and the need to apply corrective roll tilting. Therefore, for most effective industry use of 6-high mills with intermediate roll CVC shifting, a rapid and accurate mathematical rolling model is needed to predict and account for these complex contact behaviors. This paper introduces an efficient roll-stack computational model capable of simulating such rolling mills under steady-state conditions. The model formulation applies the simplified mixed finite element method (SM-FEM), which is adapted to simulate asymmetric 6-high CVC mill contact behaviors. Results for a specific case study compare favorably to those obtained from a large-scale commercial finite element simulation, yet require a small fraction of the associated computational time and effort.
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Mayor, V. C. "Applying Traction Coating to Steel Mill Rolls." In ITSC 1996, edited by C. C. Berndt. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.itsc1996p0061.

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Abstract This paper deals with the problem of feeding hot billets into roll stands for rolling into different shapes and the need to apply a traction coating to the roll surface at the passes so that the rolls grip the hot billet. Steel mills have tried different methods over the years to make the roll surface at the passes rough, from throwing a shovelful of sand as the billet is entering the pass to knurling and embossing a rough pattern on the passes with a pepper chisel. Some mills have tried to use sand blasting on the rolls as the billet is passing through and thus ruining the bearings. The process used for this paper is spraying a 0.006" to 0.008" thick coating on the passes with Bondrite, an 80-20 Nickel Aluminum composite wire manufactured by us. The application of this coating is extremely easy and fast. The only preparation before spraying is to clean the roll surface with a good solvent that does not leave any residue. Bondrite has a very high bondstrength and bonds to the clean smooth surface of the rolls with enough bondstrength to impart a rough traction coating on the passes.
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Malik, Arif, John Wendel, Mark Zipf, and Andrew Nelson. "A Reliability-Based Approach to Flatness Actuator Effectiveness in 20-High Rolling Mills." In ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/msec2012-7281.

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20-High rolling mills process high strength and/or very thin non-ferrous and ferrous metals using a complex, cluster arrangement of rolls. The 20-high roll cluster arrangement achieves specific flatness goals in the thin sheet by delivering maximum rolling pressure while minimizing the deflections of the small diameter rolls. 20-high mills also employ flatness control mechanisms with sophisticated actuators, such as those to shift intermediate rolls and deflect backup bearing shafts. The purpose of this is to compensate for variations in strip dimensional and mechanical properties which can cause poor flatness control quality from discrepancies in work-roll gap profile and distribution of rolling force. This suggests that the random property differences in the rolling parameters that substantially affect the flatness must be directly accounted for in flatness control algorithms in order to achieve strict flatness quality. The use of accurate mathematical models that account for the rolling pass target gage reduction can optimize the flatness control actuators and help gain an advantage in the thin gauge strip competitive global market. Based on the expected process parameter variations and nominal mill set-points (speed, tension, gage reduction, etc.), the mill’s process control computer should determine the probability that target flatness control quality will be met for a required length of strip. The process computer should then either modify the number of rolling passes or adjust the thickness reduction schedule before rolling begins to secure an improved flatness probability estimate if the probability of achieving target strip flatness is too low for the required deliverable quality. Therefore, this research integrates 1) 20-high roll-stack mill mathematical modeling, 2) probability distribution data for random important rolling parameters, 3) reliability-based models to predict the probability of achieving desired strip flatness, and 4) optimization examples. The results can be used to reduce wasted rolled metal from poor flatness before rolling.
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Oliveira, Antonio Fabiano de, Guilherme Frederico Bernardo Lenz e. Silva, Eduardo Nunes, Ronald Lesley Plaut, Ricardo Lívio Ferreira Oliveira, Karl Kristian Bagger, and Célio Souza do Rosário. "A CRITICAL EVALUATION OF HARD CHROME COVERED ROLLING MILL ROLLS." In 53º Seminário de Laminação. São Paulo: Editora Blucher, 2017. http://dx.doi.org/10.5151/1983-4764-28100.

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Nelson, Andrew W., Feng Zhang, Arif S. Malik, and Mark E. Zipf. "Sizing Design for 4-High Cold Rolling Mills." In ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/msec2014-4137.

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As the demand for thin and ultra-thin gage for cold-rolled sheet metals increases, cold rolling manufacturers and sheet metal producers must utilize technological advancements to stay competitive globally. To manufacture a competitive rolling mill, the mill designer must identify an appropriate mill configuration, roll sizes, and flatness control systems, etc. The design must be robust enough to accommodate broad product envelopes containing strips of different widths, gages, and materials. At the same time, the mill “sizing” must be competitive by avoiding over- or under-design. These two objectives, designing a robust mill and remaining competitive, tend to conflict, which establishes the need for optimal mill design based on rigorous multidisciplinary analysis. Conventionally, mill design is done using a ‘sequential’ design approach relying heavily on experience. The major limitation of sequential mill design is that it can lead to over-design or under-design since it segregates design tasks for the coupled components, making it difficult to consider many combinations of the design space. The result is a ‘feasible’ rather than ‘optimum feasible’ mill design. This work applies nonlinear programming to optimize the basic design of a 4-high reversing cold rolling mill, subject to static strength, fatigue, and strip geometric quality constraints. The work offers an improved multi-disciplinary design approach based on stress and fatigue analysis of rolls, and an efficient strip profile/flatness analysis to identify suitable design limits for roll bending devices.
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Ould, Choumad, Yves Gachon, Pierre Montmitonnet, and Xavier Badiche. "Tribological Testing of Anti-Adhesive coatings for Cold Rolling Mill Rolls—Application to TiN-Coated Rolls." In THE 14TH INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2011. AIP, 2011. http://dx.doi.org/10.1063/1.3589768.

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8

Yuanke, L., C. Guanwei, Y. Jun, Z. Qigui, and Z. Caiyun. "3D Finite Element Analysis of Rolling Mill Bearings." In ASME 1989 Design Technical Conferences. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/detc1989-0066.

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Abstract The analysis and computation on stress and load-distribution state of rolling bearings via finite element method is one of the major studies on rolling bearings. This finite element analysis is much more complicated than that of common structures because of the contact problems existed in it and most of them can not be treated as plane prolems. This paper not only discusses the basic method of 3D contact finite element analysis and its solving technique in terms of the characteristics of four-row taper roller bearings attached to cold-rolling-mill work rolls, but also presents a simplified analytical model and computing results. The load-distribution curve under different working conditions is illustrated too in this paper.
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Brusa, Eugenio G. M., and Luca Lemma. "A Multi-Level Approach for the Mechanical Design of Cluster Mills for Cold Rolling of Thin Steel Products." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95075.

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So-called “cluster mills” for cold rolling are currently preferred to prevent strip faults, as the back-up rolls present on the work rolls assure the stiffness required to avoid bending. An effective prediction of dynamic behaviour using an analytical approach is more difficult than for 2 and 4-high mills. The aim of this paper is to find models to simulate operating conditions in cluster mills. Two typical test cases such as Sendzimir and Z-mill are used to detect relevant aspects of dynamics on the experimental signatures, acquired in service. A multi-level approach, based on a core mill model and on some additional models, is proposed to investigate second order approximation problems. Co-simulation with the core model is avoided, as it takes too long. Phenomena, models, available tools and implementation issues are systematically analysed, while a preliminary experimental validation of results, based on available industrial mills, is discussed.
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Radionov, A. A., V. R. Gasiyarov, A. S. Karandaev, B. M. Loginov, and V. R. Khramshin. "Controlling the Electric Drives of the Reversing Rolling Stand Rolls of a Rolling Mill to Form a Curvature at the Workpiece Front End." In 2019 IEEE 13th International Conference on Power Electronics and Drive Systems (PEDS). IEEE, 2019. http://dx.doi.org/10.1109/peds44367.2019.8998801.

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Reports on the topic "Rolling mill rolls"

1

Scott, Jeff, and David John Alexander. Waterbury Farrel Rolling Mill Roll Replacement. Office of Scientific and Technical Information (OSTI), June 2018. http://dx.doi.org/10.2172/1457314.

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