OPTIMIZATION OF THE CALIBRATION PARAMETERS OF THE CHP STATUS WITH THE PURPOSE OF OBTAINING A RATIONAL DISTRIBUTION OF CONSUMPTION ALONG THE PIPE DIAMETER ALONG THE CONE OF DEFORMATION
Article Sidebar
Main Article Content
Abstract
The aim of the work is to study the influence on the nature of the distribution of compression along the diameter along the deformation cone of such parameters of calibration of the working tool of cold pilger rolling mills of pipes as the value of the initial taper and the degree of steepness of the profile of the generatrix of the groove crest of the gauge, and the same parameters of the generatrix of the profile of the working surface of the mandrel. The studies were based on the developed method for calculating the reduction in diameter along the deformation cone, on a number of dependencies derived by different authors to determine the geometric parameters of the working tool of the CPT mill, to determine the deformation parameters of the CPT process. The proposed method allows to partially level the inaccuracy of the existing formulas. Optimization of the nature of the distribution of the amount of compression along the diameter along the deformation cone makes it possible to reduce the likelihood of such a defect as a scratch on the inner surface of a cold-rolled pipe. The influence of the calibration parameters of proportional reductions on the nature of the reduction distribution along the diameter along the cone of deformation has been studied. It was found that from the point of view of optimizing the distribution of compression along the diameter along the cone of deformation, it is most appropriate to use calibrations with a curvilinear generatrix of the profile of the working surface of the mandrel. Such calibrations have great opportunities for optimization and allow choosing the most acceptable deformation modes.
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
Pilipenko, S.V., Grigorenko, V.U., & Bohdanov, О.О. (2021). Deformation mode in a cold rolling condition to provide the necessary texture of the Ti-3Al-2.5V alloy. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (1), 78–83. (In Engl.). https://doi.org/10.33271/nvngu/2021-1/078
Pilipenko, S.V. (2017). Issledovaniye tochnosti opredeleniya obzhatiya po tolshchine stenki vdolʹ konusa deformatsii za dvoynoy khod kleti stanov KHPT [Investigation of the accuracy of determining the reduction in wall thickness along the deformation cone for a double stroke of the stand of KhPT mills]. Stalʹ [Steel], (2), 94–97. (In Russ., abstr. in Engl.).
Pilipenko, S.V. (2019). Analiz vliyaniya tekhnologicheskikh faktorov protsessa kholodnoy prokatki trub na izmeneniye raspredeleniya Q-faktora vdolʹ konusa deformatsii [Analysis of the influence of technological factors of the process of cold rolling of pipes on the change in the distribution of the Q-factor along the strain cone]. Izvestiya vysshikh uchebnykh zavedeniy. Tsvetnaya metallurgiya [News of higher educational institutions. Non-ferrous metallurgy], (3), 30–35. (In Russ., abstr. in Engl.).
Mokrousov, V.I. (2015). Vliyaniye na prochnostʹ stalʹnykh tolstostennykh trub defekta riska na vnutrenney poverkhnosti [Influence on the strength of steel thick-walled pipes of the risk defect on the inner surface]. Molodoy uchenyy [Young scientist], 19(99), 148–153. (In Russ., abstr. in Engl.).
Bettayeb, M., Bouali, E., Abdelbaki, N., & Gaceb, M. (2012). Establishment of a database and a classification of the defects in the metal of pipes according to their severity. Procedia Engineering, (42), 607–615. (In Engl.). DOI: 10.1016/j.proeng.2012.07.453
Bogatov, A.A., Pavlov, D.A., & Pavlova, Ye.A. (2015). Tekhnologicheskiye osobennosti protsessa raskatki trub na korotkoy opravke [Technological features of the process of rolling pipes on a short mandrel]. Nauchno-tekhnicheskiye vedomosti Cankt-Peterburgskogo gosudarstvennogo politekhnicheskogo universiteta [Scientific and technical statements of the St. Petersburg State Polytechnic University], 2(226), 54–59. (In Russ., abstr. in Engl.). DOI: 10.5862/JEST.226.6.
Chernykh, I.N., Ustʹyantsev, V.L., Litvinov, M.A., & Krivonogov, I.N. (2019). Izucheniye transformatsii defektov poverkhnosti pri proizvodstve trub v usloviyakh TPA-80 [Study of the transformation of surface defects in the production of pipes under the conditions of TPA-80]. Vestnik YUUrGU. Ser. Metallurgiya [Bulletin of the South Ural State University. Ser. Metallurgy], (4), 27–36. (In Russ., abstr. in Engl.).
Sergacheva, M.I., Nikulina, A.V., Ozhmegov, K.V., & Kabanov A.A. (2019). Povrezhdeniya trub iz splavov sistemy Zr-Nb v protsesse ikh kholodnoy prokatki [Damage to pipes from alloys of the Zr-Nb system during their cold rolling]. Voprosy atomnoy nauki i tekhniki. Seriya: Materialovedeniye i novyye materialy [Questions of atomic science and technology. Series: Materials Science and New Materials], 4(100), 102–117. (In Russ., abstr. in Engl.).
Mishchenko, A.V. (2019). Sostoyaniye i tendentsii razvitiya proizvodstva kholodnokatanykh trub iz splavov na osnove titana [Status and development trends in the production of cold-rolled pipes from alloys based on titanium]. Metall I Litʹye Ukrainy [Metal and Casting Ukraine], 3-4, 310–311. (In Russ., abstr. in Engl.).
Orlov, G.A. (2011). Kholodnaya prokatka i volocheniye trub [Cold rolling and pipe drawing]. Yekaterinburg: UrFU. (In Russ.).
Shevakin, YU.F. (1963). Kalibrovka i usiliya pri kholodnoy prokatke trub [Calibration and forces during cold rolling of pipes]. Moscow: Metallurgiya. (In Russ.).
Balakin, V.F., Kucherenko, V.R., Solovʹyeva, I.A. & Pilipenko, S.V. (2015). Geometriya prokatnogo instrumenta i algoritmy yego rascheta dlya stanov kholodnoy prokatki trub [Geometry of a rolling tool and algorithms for its calculation for tube cold rolling mills]. In A.G. Velichko (Eds.), V.I. Bolʹshakova (Eds.) & V.F. Balakina (Eds.) Sovershenstvovaniye proizvodstva stali, trub i zheleznodo-rozhnykh koles [Improving the production of steel, pipes and railway wheels] (434–450). Dnepropetrovsk: Ekonomika. (In Russ.).
Frolov, V.F., Danchenko, V.N. & Frolov, Ya.V. (2005). Kholodnaya pilʹgernaya prokatka trub [Cold pilger rolling of pipes]. Dnepropetrovsk: Porogi. (In Russ.).
Balakin, V.F., Solovyova, I.A., Kucherenko, V.R., Pylypenko, S.V. & Nykolayenko, Yu.M. (2016). Vyrobnytstvo trub kholodnoyu de-formatsiyeyu: Chastyna II [Production of pipes by cold deformation (Part II)]. Dnepropetrovsk: NMetAU. (In Ukrain.).