Macro- and Micromechanics of Pearlitic-Steel Deformation in Multistage Wire Production

Konstantinov, D. V.; Корчунов, А. Г.; Zaitseva, Maria V.; Shiryaev, O. P.; Emaleeva, D. G.

doi:10.3103/s0967091218070094

Cited by 6 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wire drawing process, preceding the operations of straightening, stranding and MTT, was described and investigated on the basis of an industrial experiment and multiscale modeling in paper [21]. The traditionally used MTT temperature values are the range of 360-400 °С.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

FEM research of internal stresses evolution in the prestressing strand production

Korhunov

Medvedeva

Ivekeeva

et al. 2020

METAL 2020 Conference Proeedings

View full text Add to dashboard Cite

The article presents the finite-element modeling results of stranding, reduction, straightening and mechanicalthermal treatment (MTT) of prestressing strand (PSC strand). Computer models took into account the distribution of residual stresses formed at the preliminary stage of wire drawing. During the simulation, the effect of MTT on the internal stresses of the wires was studied: residual stresses after the drawing process and additional stresses after the stranding. All studied methods demonstrated a positive effect not only from the point of eliminating internal stresses, but also from the point of view of their favorable redistribution. The reduction of PSC strand in a monolith tool with strain degree 1-3% allows to minimize tensile stresses on the surface of the wires and save compressive stresses in the center of the wires. The straightening by a group of 5 rolls made it possible to reduce the tension of outer wires twice. The MTT application, combining the effects of various physical nature, made it possible to control over a wide range the redistribution of residual stresses in the wires after high strain degrees and the additional stresses created during the stranding, which affect the preservation of the geometric parameters of the PSC strand. The study showed that to eliminate longitudinal residual stresses, the magnitude of the tension in the MTT is the most important parameter. Therefore, with a minimum value of tension, the residual stresses are not redistributed either in the central or in the surface layers, regardless of the temperature of the MTT. However, with tension above 70 kN and a temperature of 380-400°C, the residual stresses in the center and on the surface of the wires are balanced or almost completely eliminated.

show abstract

Section: Methodsmentioning

confidence: 99%

“…In all models in the initial state, the distribution of residual stresses was used after the drawing process investigated and verified in [21].…”

Section: )mentioning

confidence: 99%

FEM research of internal stresses evolution in the prestressing strand production

Korhunov

Medvedeva

Ivekeeva

et al. 2020

METAL 2020 Conference Proeedings

View full text Add to dashboard Cite

show abstract

“…Among the first such technologies are the Conform and Linex processes, modifications of which are being created at the present time [13,14]. For the possibility of deformation of longlength samples, a number of ECAP-based combined processes have been developed, which also ensure the continuity of the process [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Efficiency of Roll Profiles and Technological Schemes of Deformation of Asymmetric Rolling in Relief Rolls of C11000 Copper Alloy by FEM Simulation

Panin,

Esbolat,

Arbuz

et al. 2024

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

In this paper, finite element simulation of asymmetric rolling in relief rolls of C11000 copper alloy in order to analyze the effectiveness of possible roll profiles and technological schemes of deformation was performed. The scientific innovation of this work lies in determining the patterns of development of stress-strain state parameters for various configurations of rolls, as well as determining the effectiveness of metal processing using various technological schemes. It was found that the use of trapezoidal relief makes it possible to increase the level of metal processing by almost 5 times compared with the use of radial relief. Comparison of technological schemes of deformation showed that deformation with 180° workpiece turning between passes significantly reduces the influence of the asymmetry factor. Deformation without changing the workpiece position between the passes has the opposite effect, and such a scheme significantly increases the influence of the asymmetry factor. Deformation with a transverse workpiece shift for the relief period between passes has the effect of a “golden mean.” The conducted laboratory experiment for lead billet showed that the shape change of lead billet during computer simulation has a high level of convergence with real conditions. At each stage of deformation, the difference in the geometric parameters of the workpiece between the model and the experiment did not exceed 3-5%. When deforming a copper billet, the maximum difference level was 8%, which is the result of the low rigidity of the rolling cage with smooth rolls.

show abstract

“…To these, stranding stresses are added that occur in a wire rope stranding machine. The drawing process preceding the straightening, stranding and TMT operations was described and examined by means of full-scale experiment and multiscale modelling in the paper [21]. The conventional TMT temperature range is 360-400 °С.…”

Section: Introductionmentioning

confidence: 99%

“…The same post-drawing distribution of the residual stresses was used for the initial state in all the models as the one examined and verified in the paper [21].…”

Section: Introductionmentioning

confidence: 99%

FEM study of internal stresses evolution in prestressing strands

Корчунов¹,

Medvedeva²,

Ivekeeva³

et al. 2020

cisisr

Self Cite

View full text Add to dashboard Cite

This paper describes the results of modeling when the processes of stranding, reduction, straightening and thermo-mechanical treatment (TMT) of prestressing strands were simulated with the help of finite-element method. The distribution of residual stresses used in the simulation models refers to the stresses created at the preliminary stage of wire drawing. The simulation study looked at the effect of thermo-mechanical treatment on the internal wire stresses: residual stresses resultant from the drawing process and further stranding stresses. All studied methods demonstrated a positive effect not only in terms of eliminating internal stresses, but also from the point of view of their redistribution. Reduction of a strand in a solid tool at the ratios of 1–3 % allows to create tensile stresses at the surface of the wire and retain compressive stresses in its core. Straightening in a 5-roller group helped reach a double relaxation in outer wires. TMT, a process combining different physical effects, enabled to control within a broad range the redistribution of residual stresses in steel that was subjected to prior drawing at high deformation ratios. Such residual stresses occur as a result of stranding stresses that accompany the stranding operation and can affect the geometry of the strand. The study showed that tension as a TMT parameter plays a greater role in the elimination of longitudinal residual stresses. That’s why, at the minimum tension, almost no redistribution of residual stresses occur either in the central or in the near-surface layers irrespective of the TMT temperature regime applied. However, when the tension exceeding 70 kN is applied at the temperatures of 380–400 °C, the central and surface residual stresses balance off in the wire or almost disappear. This research was carried out under the Decree No. 220 dated 9th April 2010 of the Government of the Russian Federation (Contract No. 075-15-2019-869 dated 12th May 2019) and was funded by the Russian Science Foundation (Project No. 20-69-46042 dated 20th May 2020) and by the Russian Ministry of Education and Science with the goal of developing high-tech production (contract nos. 02.G25.31.078, December 1, 2015; and MK204895, July 27, 2015).

show abstract

Macro- and Micromechanics of Pearlitic-Steel Deformation in Multistage Wire Production

Cited by 6 publications

References 19 publications

FEM research of internal stresses evolution in the prestressing strand production

FEM research of internal stresses evolution in the prestressing strand production

Investigation of the Efficiency of Roll Profiles and Technological Schemes of Deformation of Asymmetric Rolling in Relief Rolls of C11000 Copper Alloy by FEM Simulation

FEM study of internal stresses evolution in prestressing strands

Contact Info

Product

Resources

About