DEVELOPMENT OF NEW METHODS OF MANUFACTURING OF LARGE-DIAMETER DOUBLE-SEAM PIPES
Keywords:
welded pipes, step-by-step molding, JCOE, development of new methods of manufacturing double-seam pipes, process modeling, finite element methodAbstract
A contemporary metallurgical plant consists of numerous auxiliary and primary shops, and they require continuous economic investment. Saving on physical resources, raw materals, etc., as well as of reduction of the metal consumption rate, production optimization and flexibility is an important issue for metallurgical companies in the context of economic instability in the industry. This article describes new methods of manufacturing expandable electric resistance welded pipes out of two sheets (double-seam pipes). Using modern methods of engineering analysis based on the finite element method (FEM), the authors evaluated the possibilities of implementing new methods of manufacturing large-diameter double-seam pipes, and also selected such molding process modes that allow obtaining such products that comply with customer's requirements. The article describes results of test surveys, reproducibility evaluation of the results obtained with CAE-systems, and experimental shop operation results. The new mathematical models of manufacturing pipe blanks using basic molding operations are highly reproducible and may be used to calculate pipes of other dimensions. Use of MSC Software (specialized software) to simulate the new mathematical models helps to evaluate new process modes and various production techniques without risks or financial losses. The proposed new methods of manufacturing large-diameter double-seam pipes (sheet molding out of two halves and semi-cylinder molding) helped to increase production yield and flexibility and positively affected cost-effectiveness (due to fewer expenses on sheet blanks). The authors confirmed efficiency of these methods and proved in the field (experimental lot production) that they may be reasonably used.References
Osadchiy V.Ya., Vavilin A.S., Zimovets V.G., Kolikov A.P. Tekhnologiya i oborudovaniye trubnogo proizvodstva [Technology and equipment for pipe production]. Moscow, Intermet Inzhiniring Publ., 2001, 608 p.
Kovalenko D.M., Shander V.V. Sposob izgotovleniya dvukhshovnykh trub bol’shogo diametra [A method of manufacturing two-seam pipes of large diameter]. Patent RF, no. 2667194, 2018.
Matveyev Yu.M., Khalamez E.M., Ivantsov V.Ya., Zayonchik L.I. [Study of the process of forming half-cylinders for the production of large-diameter pipes]. Proizvodstvo svarnykh i besshovnykh trub, 1971, no. 13, pp. 93–96. (in Russ.)
Samusev SV, Lyuskin AV, Bol'dt VV. Assembling the profile of pipe blank after the incrementalshaping press in the TESA 1420 line. Steel Transl., 2010, vol. 40, iss. 3, pp. 204–208. DOI: 10.3103/S0967091210030022
Samusev S.V., Lyuskin A.V., Bol'dt V.V. Shaping of blank in large-diameter pipe production. Steel Transl., 2009, vol. 39, iss. 12, pp. 1100–1103. DOI: 10.3103/S096709120912016X
Samusev S.V., Romantsov A.I., Zhigunov K.L., Bol’dt V.V., Sigida M.S. [Development of technological regimes of the pipe billet forming section in the TESA-1420 line of Chelyabinsk Tube Rolling Plant OJSC]. Proizvodstvo prokata, 2011, no. 10, pp. 20–28. (in Russ.)
Shterenzon, V.A. Modelirovaniye tekhnologicheskikh protsessov [Process Simulation]. Ekaterinburg, RGPPU Publ., 2010, 67 p.
Segerlind L. Applied Finite Element Analysis. John Wiley and Sons, Inc., 1976, 422 p.
Kireyev V.I., Panteleyev A.V. Chislennyye metody v primerakh i zadachakh [Numerical methods in examples and problems]. Moscow, Vysshaya shkola Publ., 2004, 480 p.
Stepanskiy L.G. Raschety protsessov obrabotki metallov davleniyem [Calculations of metal forming processes]. Moscow, Mashinostroyeniye Publ., 1979, 215 p.
Galkin V.V., Cheburkov A.S., Pachurin G.V. Otsenka napryazhenno-deformirovannogo sostoyaniya metalla trubnykh zagotovok, izgotovlennykh poshagovoy formovkoy, metodom matematicheskogo modelirovaniya [Assessment of the stress-strain state of metal tubular billets made by step-bystep molding using mathematical modeling]. Sovremennyye problemy nauki i obrazovaniya. 2013, no. 2, pp. 1–9. (in Russ.)
Kolikov A.P., Zvonarev D.Yu., Osadchiy V.Ya. [Mathematical model of forming a sheet blank in the production of welded pipes of large diameter]. Plasticheskaya deformatsiya metallov: collection of scientific papers in 2 volumes. Dnepropetrovsk, 2014, vol. 1, pp. 118–122. (in Russ.)
http://ausferr.ru (accessed 06.05.2019).
Makeyev D.M. Modernizatsiya ekspandera v linii pryamoshovnykh trub tsekha № 6 PAO “CHTPZ” s tsel’yu povysheniya kachestva produktsii [Modernization of the expander in the straight-line pipe line of workshop No. 6 of PJSC “ChTPZ” in order to improve product quality. Dissertation of the Master of Engineering]. Celyabinsk, 2018, 86 p.
Pravosudovich V.V., Sokurenko V.P., Danchenko V.N. Defekty stal’nykh slitkov i prokata [Defects of Steel Ingot and Rolled: Reference Edition]. Moscow, Interment Inzhiniring Publ., 2006, 384 p.
Dubinskiy F.S., Sosedkova M.A. Matematicheskoye planirovaniye eksperimenta v prokatke [Mathematical design of an experiment in rolling]. Chelyabinsk: SUSU Publ., 2007, 25 p.
Volkova P.A., Shipunov A.B. Statisticheskaya obra-botka dannykh v uchebno-issledovatel’skikh rabotakh [Statistical data processing in educational research]. Moscow, Ekopress Publ., 2008, 60 p.
Palumbo G., Tricarico L. Effect of forming and calibration operations on the final shape of large diameter welded tubes. Journal of Materials Processing Technology, 2005, vol. 164–165, pp. 1089–1098. DOI: 10.1016/j.jmatprotec.2005.02.150
Anur’yev, V.I. Spravochnik konstruktora-mashinostroitelya [Handbook of the designer-mechanical engineer]. Moscow, Mashinostroyeniye Publ., 2001, 920 p.
Deriks V., Genzer B. [New technologies for economical and flexible production of large diameter pipes]. Proceedings of the XIII International scientific-practical conf. “Tube & Pipes 2005”. Part 1. Chelyabinsk, JSC “RosNITI”, 2005, pp. 105–108. (in Russ.)
