Comparative Evaluation of Analytical Methods for the Determination of Coefficients of Friction and Stresses when Wire Rod Drawing

Abstract:

The article discusses the process of wire drawing of circular cross-section. The study of stresses of wire drawing in conditions of plane plastic flow was held. As theoretical framework the study was adopted the method of characteristics, a special case, having the definitive decision. Stresses during wire drawing are defined by decomposing the decision into two components of plane strain and the superposition of these decisions. The results of theoretical solution of the problem of wire drawing were used to determine the coefficients of friction on the surface of contact of the tool and the work piece during the deformation of steel with a diameter of 5.5 mm. It is recommended to use two-dimensional methods of solution in the analysis of the process of wire drawing in conditions with a high hearth of plastic deformation (with the relative height of the hearth of plastic deformation 2 and bigger). The theoretical dependences between the friction coefficients at the contact surface of the work piece and the tool was obtained. The obtained values of coefficients of friction can be used over solving the task of the wire drawing in conditions with a high hearth of plastic deformation.

• Periodical: Solid State Phenomena (Volume 284)
• Pages: 247-252
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.284.247
• Online since: October 2018
• Authors: Sergey I. Platov*, V.A. Nekit, Nikolay N. Ogarkov
• Keywords: Coefficients of Friction, Drawing, Hearth of Plastic Deformation, Stress

References

[1] S.I. Platov, V.A. Nekit, N.N. Ogarkov, Determination of frictional forces during wire rod drawing process by reverse method. 2017, Solid State Phenomena , 265 SSP, с. 1152-1156.

DOI: 10.4028/www.scientific.net/ssp.265.1152

[2] N.N. Ogarkov, S.I. Platov, E.S. Shemetova, D.V. Terent'ev, V.A. Nekit, Oil Absorption Capacity of the Contact Surfaces in Metal-Forming Processes, Metallurgist, 61(1-2) (2017) 58-62.

DOI: 10.1007/s11015-017-0454-4

[3] O.S. Zhelezkov, S.A. Malakanov, S.I. Platov, Stress-strained state and forming in drawing of hexagonal sections from a round billet, Chernye Metally, 12 (2016) 31-35.

[4] A.I. Tselikov, A.D. Tomlenov, V.I .Zuzin, Theory of rolling, Moscow: Metallurgy, (1982).

[5] S.I. Gubkin, Рlastic deformation of metals, Moscow: Metallurgy, (1961).

[6] V.V. Sokolovsky, Theory of plasticity, Moscow: Visshaia shkola, (1969).

[7] I.L. Perlin, M.Z. Ermanok, Theory of wire drawing, Moscow: Metallurgy, (1971).

[8] S. I. Platov, Improvement of technical parameters of the processing tool flexible wire rod and wire prior to drawing, Steel, 5 (2005) 84-86.

[9] S. I. Platov, D.V. Terentyev, S.A. Morozov, Drawing of wire rod and wire with regulated surface micro relief, Production of rolled products, 4 (2002) 27-28.

[10] V.A. Nekit, S. Platov, I. Kurbakov, A.D. Golev, Experimental study of advance and lag when rolling, Bulletin of Magnitogorsk state technical University, 1 (2015) 52-54.

[11] V.A. Nekit, Mechanical model of process of rolling-drawing thin strips, Modelling and development of processing of metals by pressure, Magnitogorsk, (2014) 114-118.

[12] V.A. Nekit, About the location of the neutral section in the hearth of plastic deformation during rolling of strips, Modelling and development of processing of metals by pressure, Magnitogorsk: (2012) 137-138.

[13] V.A. Nekit, Friction and elastic compression of rolls in cold rolling of sheet and strip, Modelling and development of processing of metals pressure. Magnitogorsk: (2009) 101-104.

[14] V.A. Nekit, Theoretical justification of the capture conditions at the steady state process of cold sheet rolling, Modelling and development of processing of metals pressure, Magnitogorsk, (2013) 72-75.

[15] A. Morozov, B. Nikiforov, V. Salganik, A. Pesin, S. Platov, E. Trahtengertz, Mathematical modelling of plastic deformation process in section rolling, Preceding of the 7th international conference on numerical methods in industrial forming process, Simulation of Materials Processing Theory, Methods and Applications, Numiform, Toyohashi, Japan, (2001).

[16] Glossop Kelth, Optimization of copper wire drawing lubricants with a view to enhancing production efficiency, Wire ind. 23 (1990) 42-50.

[17] C.H. Lee, S. Kobayashi, New Solutions in rigid-plastic deformation problem using a matrix method, Eng. Indust., Trans. ASME, 95 (1973) 865-873.

DOI: 10.1115/1.3438238

[18] M. Lung, O. Mahrenholtz, A finite element procedure for analysis of metal forming processes, Trans. CSME 2 (1974) 31-36.