Pipe rolling on a short mandrel with kinematic tension
Tóm tắt
Improvement in pipe production on a longitudinal rolling mill is proposed. The tandem longitudinal pipe rolling mill in the pipe-mill aggregate (PMA)-140 at PJSC (public joint-stock company) Sinarsky Pipe Works is considered. Currently, pipe is produced both from rolled billet (diameter 120 mm) and from continuous-cast billet. To reduce costs, it would make sense to discontinue the use of rolled billet and to produce all of the pipe from continuous-cast billet in the existing PMA-140. In order to employ continuous-cast billet, more profound reduction in the tandem mill is necessary. At present, the reduction is 1.16–1.5 in longitudinal rolling mill 1 and 1.07–1.15 in longitudinal rolling mill 2. With greater reduction, longitudinal guide marks may appear on the pipe surface. A possible approach to decreasing the pipe wall thickening in the groove taper and hence reducing the rejection rate due to longitudinal guide marks is to employ kinematic tension in rolling an oval sleeve on a short mandrel. The influence of the kinematic tension on the pipe shaping in grooves during longitudinal rolling of an oval sleeve is investigated. This method is found to diminish the thickening of the sleeve wall in the groove taper in longitudinal rolling mill 1. That lowers the likelihood of longitudinal guide marks on the pipe’s internal surface. The possibility of increasing the reduction in rolling on an automatic tandem mill is confirmed.
Tài liệu tham khảo
Kharitonov, V.V., Bogatov, A.A., and Vakhrushev, V.Yu., Oborudovanie dlya prokatki, pressovaniya i volocheniya trub (Equipment for Rolling, Pressing, and Drawing of Pipes), Yekaterinburg: Ural. Gos. Tekh. Univ., 2008.
Ovchinnikov, D.V., Bogatov, A.A., and Erpalov, M.V., Development and introduction of the production of high-quality pump and compressor pipe from continuous-cast billet, Chern. Met., 2012, no. 3, pp. 18–21.
Bogatov, A.A., Pavlov, D.A., Lipnyagov, S.V., and Suvorov, V.N., Simulation of “risk” defect on the inner surface of the pipes in the longitudinal rolling, Proizvod. Prokata, 2012, no. 8, pp. 37–39.
Bogatov, A.A., Dresvyankina, E.A., and Pavlov, D.A., New way of rolling of hot-deformed pipes on a short mandrel, Stal’, 2014, no. 12, pp. 49–51.
Danchenko, V.N., Sergeev, V.V., and Nikulin, E.V., Proizvodstvo profil’nykh trub (Production of Profile Pipes), Moscow: Intermet Inzhiniring, 2003.
Danchenko, V.N., Kolikov, A.P., and Romantsev, B.A., Tekhnologiya trubnogo proizvodstva (Technology of Pipe Production), Moscow: Intermet Inzhiniring, 2002.
Romantsev, B.A., Goncharuk, A.V., Vavilkin, N.M., and Samusev, S.V., Trubnoe proizvodstvo: Uchebnik (Pipe Production: Manual), Moscow: Mosk. Inst. Stalei Splavov, 2011.
Osadchii V.Ya., Vavilin A.S., Zimovets V.G., and Kolikov A.P. Tekhnologiya i oborudovanie trubnogo proizvodstva (Technology and Equipment for Pipe Production), Moscow: Intermet Inzhiniring, 2001.
Druyan, V.M., Gulyaev, Yu.G., and Chukmasov, S.A., Teoriya i tekhnologiya trubnogo proizvodstva (Theory and Technology of Pipe Production), Dnepropetrovsk: Dnepr-VAL, 2001.
Danilov, A.F., Gleiberg, A.Z., and Balakin, V.G., Goryachaya prokatka i pressovanie trub (Hot Rolling and Pressing of Pipes), Moscow: Metallurgiya, 1972.
Karamyshev, A.P., Nekrasov, I.I., Pugin, A.I., et al., Prakticheskoe rukovodstvo k programmnomu kompleksu Deform 3D (Practical Handbook for Deform 3D Software Complex), Yekaterinburg: Ural. Fed. Univ., 2010.
Fokin, V.G., Metod konechnykh elementov v mekhanike deformiruemogo tverdogo tela: Ucheb. posobie (Finite Element Method in Deformable Solid Mechanics: Manual), Samara: Samar. Gos. Tekh. Univ., 2010.
Potapov, I.N., Kolikov, A.P., and Druyan, V.M., Teoriya trubnogo proizvodstva (Theory of Pipe Production), Moscow: Metallurgiya, 1991.
Shevakin, Yu.F., Kolikov, A.P., and Raikov, Yu.N., Proizvodstvo trub (Pipe Production), Moscow: Intermet Inzhniring, 2005.
Katsumura, T., Ishikawa, K., Matsumoto, A., et al., Development of finite element analysis model for plug mill rolling, Key Eng. Mater., 2014, vols. 622–623, pp. 899–904.