Development and Validation of a Numerical Model of Rolling with Cyclic Horizontal Movement of Rolls

Milenin, A.; Grosman, F.; Madej, Łukasz; Pawlicki, J.

doi:10.1002/srin.200900094

Cited by 15 publications

(5 citation statements)

References 6 publications

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“…The new method makes it possible to apply a large cumulative deformation in a single pass and to deform samples of "unlimited length". In the analysis of mechanical and structural phenomena accompanying the rolling process, it is also necessary to use numerical modeling tools [27].…”

Section: Discussionmentioning

confidence: 99%

Analysis of the Effects of an Unconventional Rolling Process under Cumulative Plastic Deformation Conditions

Pawlicki

Płachta

2023

Materials

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This article presents the results of research carried out on an experimental rolling mill with axial, cyclic movement of rolls (RCMR). The device was made on the basis of an unconventional technical solution for the movement of shaping tools and equipped with a complete measuring system recording all the parameters of the process. The research was conducted on selected copper alloys CuFe2 and CuCr0.6. Rolling tests in the RCMR process were carried out for rolling speeds vr = 3.1 × 10−3, 6.3 × 10−3 and 9.4 × 10−3 m/s, which correspond to the rotational speed of the rollers at ω = 1, 2 and 3 rpm for an active diameter of the rollers = 60 mm. In testing the thermal effects of the process, the rolling speed ω = 0.7 rpm was also used. A constant value of the frequency of axial movement of the rollers f = 1 Hz and the amplitude of the displacement of the rollers A = 0.8 mm were assumed. The rolling process for the strands was carried out in six culverts using the average relative crush in the passage of Δh = 15%. Conventional rolling tests were carried out to compare rolling processes, and the obtained data formed the basis for assessing the strain intensity and identifying local deformation zones in the RCMR rolling process. The waveforms of rolling pressures, intensity and non-uniformity of deformation, and increase in the temperature of the strip surface in subsequent culverts were compared with the results obtained in the conventional rolling process.

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Section: Discussionmentioning

confidence: 99%

Analysis of the Effects of an Unconventional Rolling Process under Cumulative Plastic Deformation Conditions

Pawlicki

Płachta

2023

Materials

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“…The lowest temperature is the deepest and widest decrease is. It leads to localization of deformation, and breaking of the wire can appear during the drawing if temperature is low enough [4]. The other results are obtained at higher temperature (over 350ºC).…”

Section: Dislocation Density and Flow Stress Modelmentioning

confidence: 93%

Modeling with FCA-Based Model of Microstructure Evolution of MgCa08 Alloy During Drawing of Thin Wire in Heated Die / Modelowanie Za Pomocą FCA Rozwoju Mikrostruktury Stopu MgCa08 Podczas Ciągnienia Cienkiego Drutu W Podgrzewanym Ciagadle

Svyetlichnyy¹,

Kustra²,

Milenin³

2015

Archives of Metallurgy and Materials

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The paper deals with a modeling of manufacturing process of thin wire of MgCa08 alloy used as biocompatible soluble threads for medical application. Some difficulties in material deformation subjected with its hexagonal structure can be solved with accurate establishment of the deformation conditions, especially temperature history of the whole process. In drawing process with heated die, wire is preheated in furnace and then deformed. The only narrow temperature range allows for multi-pass drawing without wire breaking. Diameter below 0.1 mm required for the final product makes very important the consideration of microstructure evolution because grain size is comparable with the wire dimensions. For this reason the problem is considered in the micro scale by using the frontal cellular automata (FCA)-based model. The goals of present work are the development and validation of FCA-base model of microstructure evolution of MgCa0.8 magnesium alloy. To reach this objective, plastometric and relaxation tests of MgCA08 alloy were done on physical simulator GLEEBLE 3800. Results of the experimental studies were used for parameters identification of the hardening-softening model of the material. Then, initial microstructure and its evolution during the drawing passes were simulated with FCA-based model. FCA consider dislocation density and flow stress, hardening and softening including recovery and recrystallization, grain refinement and grain rotation, as well as grain growth. It allows one to obtain structures close to real ones. Two variants of the drawing process with different temperature history were considered. The deformation scheme was the same. Simulation results with following short discussion confirm usefulness of FCA-based model for explanation and selection of rational technological condition of thin wire drawing of MgCa08 alloy.

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“…It is even more significant because, in the hitherto known, and proposed by Milenin, model of the MEFASS process [8], the problem of the time of calculations was solved by presuming the roll barrel having a smooth surface, and describing the conditions of friction on the contact surface between that and a material in the form of anisotropic model. That model was formulated taking advantage of the non-isothermal incompressible body (having non-linear viscosity) flow theory and by means of introducing the original penalty function [9].…”

Section: Analysis Of the State Of Stress And Deformationmentioning

confidence: 99%

“…It is no less important to decrease the values of loads acting on the construction of devices in the course of process. The results of research into changes in the characteristics of metals in the conditions of a complex deformation path gave rise to searching for the possibilities of taking advantage of that phenomena in actual industrial processes such as forging [5] or rolling [2,[6][7][8] …”

Section: Introduction -The Directions Of Research Into Plastic Workinmentioning

confidence: 99%

Influence exerted by the shape of the surfaces of working roll barrels upon the course of the MEFASS (Metal Forming Aided by Shear Stresses) rolling process

Świątoniowski

Woźniak

Szostak

2017

Archives of Metallurgy and Materials

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The essential aspect of the MEFASS rolling process is introducing the cyclic axial counter movement of the rolls transverse to the direction of rolling in the course of a band pass through a rolling gap. The effect of a change in the way of deformation obtained in this manner makes it possible to set in one roll pass a deformation several times larger than it is possible in a conventional process. In this paper, upon the basis of the computer model of the MES process, supported by experimental research, the analysis of the influence exerted by the shape of the surface of roll barrels upon the distribution of the intensity of stresses σ i and deformations ε i in the section of the band being rolled, and also upon the kinematic and force parameters of the process.

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Development and Validation of a Numerical Model of Rolling with Cyclic Horizontal Movement of Rolls

Cited by 15 publications

References 6 publications

Analysis of the Effects of an Unconventional Rolling Process under Cumulative Plastic Deformation Conditions

Analysis of the Effects of an Unconventional Rolling Process under Cumulative Plastic Deformation Conditions

Modeling with FCA-Based Model of Microstructure Evolution of MgCa08 Alloy During Drawing of Thin Wire in Heated Die / Modelowanie Za Pomocą FCA Rozwoju Mikrostruktury Stopu MgCa08 Podczas Ciągnienia Cienkiego Drutu W Podgrzewanym Ciagadle

Influence exerted by the shape of the surfaces of working roll barrels upon the course of the MEFASS (Metal Forming Aided by Shear Stresses) rolling process

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