scholarly journals Research of the influence of highcarbon steel wire drawing speed on stresses and deformations on wire cross section

2019 ◽  
pp. 73-77
Author(s):  
Yu. L. Bobarikin ◽  
Yu. V. Martyanov
Keyword(s):  
Residual Stresses ◽  
Cross Section ◽  
Steel Wire ◽  
Wire Drawing ◽  
Drawing Rate ◽  
Drawing Speed ◽  
Wire Cross Section ◽  
The Absolute ◽  
The Wire ◽  
Residual Stresses And Strains

The parameters of wire production affecting the distribution of residual stresses and strains on the wire cross section are considered. It is determined that the modes of coarse drawing can affect the complex of mechanical properties of thin wire due to the uneven distribution of equivalent stresses and strains. The rough drawing speed is chosen as the investigated parameter.The effect of the coarse drawing rate of high-carbon steel wire on the distribution of equivalent residual stresses and strains over the wire cross section is studied by numerical simulation of wire drawing at different speeds by the finite element method. The values of equivalent residual stresses for the selected drawing route along the wire cross-section zones are determined. The analysis of the equivalent stress distribution over the wire cross section is made.It is shown that the increase in the speed of coarse drawing increases the uniformity of the distribution of equivalent residual stresses, does not have a negative effect on the deformed state of the wire, increases the absolute values of equivalent residual stresses, slightly reduces the absolute values of residual deformations.

Influence of Route Multiplicity and Drawing Rate on Microhardness Distribution Over Steel Wire Cross Section

Metallurgist ◽  
2020 ◽  
Vol 64 (1-2) ◽  
pp. 145-152
Author(s):  
S. M. Goloviznin ◽  
G. I. Maminov ◽  
D. S. Terskikh ◽  
D. S. Goloviznin
Keyword(s):  
Cross Section ◽  
Steel Wire ◽  
Drawing Rate ◽  
Microhardness Distribution ◽  
Wire Cross Section

Effect of Drawing Processes on Wire Breaking in Steel Wire Production

2014 ◽  
Vol 941-944 ◽  
pp. 1667-1670
Author(s):  
Ying Lei Xu
Keyword(s):  
Compression Ratio ◽  
Steel Wire ◽  
Wire Drawing ◽  
Drawing Process ◽  
Drawing Speed ◽  
Bending Stresses ◽  
The Wire ◽  
The Right ◽  
The Impact ◽  
Main Factor

Wire breaking is a major factor in the impact of wire drawing production, and drawing process is an important factor causing the wire breaking, which cannot be ignored. In this paper, the impact of tension, bending stresses, centrifugal stresses, compression ratio of die arrangement and drawing speed in the process of the wire drawing process on wire breaking were calculated theoretically. Then the corresponding measurements to reduce the rate of wire breaking were proposed. The results show that the the tension of drawing process was the main factor, while choosing the right compression ratio and drawing speed according to the actual situation, the rate of wire breaking could be reduced effectively.

Elastic–plastic deformation and residual stresses in helical springs

2019 ◽  
Vol 16 (3) ◽  
pp. 448-475
Author(s):  
Vladimir Kobelev
Keyword(s):  
Residual Stresses ◽  
Closed Form ◽  
Cross Section ◽  
Circular Cross Section ◽  
Content Type ◽  
Closed Form Solutions ◽  
Helical Springs ◽  
First Case ◽  
Setting Process ◽  
The Wire

Purpose The purpose of this paper is to develop the method for the calculation of residual stress and enduring deformation of helical springs. Design/methodology/approach For helical compression or tension springs, a spring wire is twisted. In the first case, the torsion of the straight bar with the circular cross-section is investigated, and, for derivations, the StVenant’s hypothesis is presumed. Analogously, for the torsion helical springs, the wire is in the state of flexure. In the second case, the bending of the straight bar with the rectangular cross-section is studied and the method is based on Bernoulli’s hypothesis. Findings For both cases (compression/tension of torsion helical spring), the closed-form solutions are based on the hyperbolic and on the Ramberg–Osgood material laws. Research limitations/implications The method is based on the deformational formulation of plasticity theory and common kinematic hypotheses. Practical implications The advantage of the discovered closed-form solutions is their applicability for the calculation of spring length or spring twist angle loss and residual stresses on the wire after the pre-setting process without the necessity of complicated finite-element solutions. Social implications The formulas are intended for practical evaluation of necessary parameters for optimal pre-setting processes of compression and torsion helical springs. Originality/value Because of the discovery of closed-form solutions and analytical formulas for the pre-setting process, the numerical analysis is not necessary. The analytical solution facilitates the proper evaluation of the plastic flow in torsion, compression and bending springs and improves the manufacturing of industrial components.

scholarly journals Influence of a modified drawing process on the resulting residual stress state of cold drawn wire

2018 ◽  
Vol 190 ◽  
pp. 04004
Author(s):  
Markus Baumann ◽  
Alexander Graf ◽  
René Selbmann ◽  
Katrin Brömmelhoff ◽  
Verena Kräusel ◽  
...  
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Wire Drawing ◽  
Industrial Applications ◽  
Drawing Process ◽  
Die Geometry ◽  
Residual Stress State ◽  
Drawing Die ◽  
Process Modification ◽  
The Wire

Torsion bars are used in automotive engineering as well as in other industrial applications. Such elements are produced by bending cold drawn wires. In conventional drawing processes tensile residual stresses occur near the surface of the wire. Small bending radii, which are required in limited assembly spaces, result in component failure due to reduced formability. Additional operations such as heat treatment or shot peening are necessary to influence the residual stress of the wire and to improve the dynamic stability of the torsion bar. The aim of the research is to reduce tensile residual stresses near the surface of the wire in order to eliminate process steps and to enhance formability. Therefore, a forming technology is developed by using a modified drawing die geometry on the basis of gradation extrusion. Finite element simulation is used to investigate the influences of element geometry, number of elements and process modification on the resulting residual stresses after wire drawing of a steel alloy. The results are evaluated and compared with the conventional wire drawing process. Furthermore, the requirements for the design of an experimental test device will be outlined as well as the measurement of the residual stresses by using X-ray diffraction.

scholarly journals Effect of Process Parameters in Copper-Wire Drawing

Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 105 ◽  
Author(s):  
Gustavo Aristides Santana Martinez ◽  
Wei-Liang Qian ◽  
Leonardo Kyo Kabayama ◽  
Umberto Prisco
Keyword(s):  
Hydrodynamic Lubrication ◽  
Copper Wire ◽  
Wire Drawing ◽  
Drawing Process ◽  
Stress Distributions ◽  
Operational Parameters ◽  
Die Geometry ◽  
Drawing Speed ◽  
Industrial Productivity ◽  
The Wire

The efforts to increase the operating speed of the wire drawing process play a crucial role regarding the industrial productivity. The problem is closely related to various features such as heat generation, material plastic deformation, as well as the friction at the wire/die interface. For instance, the introduction of specific lubricants at the interface between the die and the wire may efficiently reduce the friction or in another context, induce a difference in friction among different regimes, as for the case of hydrodynamic lubrication. The present study systematically explores various aspects concerning the drawing process of an electrolytic tough pitch copper wire. To be specific, the drawing speed, drawing force, die temperature, lubricant temperature, and stress distributions are analysed by using experimental as well as numerical approaches. The obtained results demonstrate how the drawing stress and temperature are affected by the variation of the friction coefficient, die geometry, and drawing speed. It is argued that such a study might help in optimizing the operational parameters of the wire drawing process, which further leads to the improvement of the lubrication conditions and product quality while minimizing the energy consumption during the process.

scholarly journals Correlation of Strain Path, Texture, Twinning, and Mechanical Properties in Twinning-Induced Plasticity Steel during Wire Drawing

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2250 ◽  
Author(s):  
Joong-Ki Hwang
Keyword(s):  
Mechanical Properties ◽  
Strain Path ◽  
Electron Backscatter Diffraction ◽  
Steel Wire ◽  
Effective Strain ◽  
Metal Flow ◽  
Wire Drawing ◽  
Surface Areas ◽  
The Wire ◽  
Backscatter Diffraction

The effect of changing the strain path on texture development, twin kinetics, and mechanical properties in twinning-induced plasticity steel was investigated to understand twinning behavior in more detail. Among the various plastic deformation processes, the wire drawing process was selected to achieve the aims of the study. Specimens of cold-drawn TWIP steel wire under the same effective strain but with different crystallographic textures were successfully fabricated using the effect of the wire drawing direction. Electron backscatter diffraction results showed that the drawn wires using both unidirectional (UD) and reverse-directional (RD) wire drawing processes were characterized as duplex fiber textures of major <111> and minor <100>. It was found that the RD wire had a higher fraction of <111> component at both the center and surface areas compared to the UD wire, because the metal flow of the RD wire was beneficial for the development of a <111> orientation. The pronounced <111> crystallographic orientation of the RD wire activated the twinning rate and geometrically necessary dislocation density, leading to an increase in strength but a decrease in ductility. The strain path is as important as the amount of strain for strengthening the materials, especially those that are deformed by twinning.

The High Speed Wire Drawing Process of Steel Wires under Fluid Frictions Conditions

2016 ◽  
Vol 716 ◽  
pp. 76-84
Author(s):  
Maciej Suliga
Keyword(s):  
High Speed ◽  
High Carbon Steel ◽  
Wire Drawing ◽  
Drawing Process ◽  
The Finite Element Method ◽  
Wire Surface ◽  
Steel Wires ◽  
Drawing Speed ◽  
The Wire ◽  
Multiparameter Analysis

The essential purpose of the work was to determine the phenomena that occur in multipass wire drawing process of high carbon steel wires with high speed in hydrodynamic dies and to assess their influence on moulding the wire properties after the drawing process. The multiparameter analysis of the issues has involved the theoretical dissection of the phenomena arising in high speed wire drawing process in hydrodynamic dies with the usage of the finite element method supported by the experimental multipass drawing process in industrial conditions. On the basis of numerical analysis the influence of drawing speed on wire temperature was estimated. For final wires the investigation of mechanical properties, topogrhaphy of wire surface, the amount of lubricant on the wire surface, the pressure of lubricant in hydrodynamic dies were determined.

scholarly journals Simulation of a Steel Wire Straightening Taking into Account Nonlinear Hardening of Material

2012 ◽  
Vol 2 (6) ◽  
pp. 320-324
Author(s):  
I. Khromov ◽  
R. Kawalla
Keyword(s):  
Residual Stresses ◽  
Physical Model ◽  
Cross Section ◽  
Steel Wire ◽  
Small Diameter ◽  
Bending Moment ◽  
High Quality ◽  
Deflected Mode ◽  
Nonlinear Hardening

Straightening is used to ensure the straightness of a rod workpiece as well as to redistribute or reduce the residual stresses in a finished product. The accuracy of modeling the operation of this kind plays an important role when manufacturing high quality ropes and cables of a small diameter. The physical model of alternating wire bending in a straightener has been considered in the paper. Computer methodology has been developed to calculate deflected mode and internal bending moment in a cross section of a wire at the different stages of deformation, which allowed taking into account nonlinear hardening of the material.

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