National University of Science and Technology MISIS, Moscow, Russia
A. S. Aleshchenko, Cand. Eng., Associate Prof., Head of the Dept. of Metal Forming, e-mail: aleschenko.as@misis.ru
Yu. V. Gamin, Cand. Eng., Associate Prof., Dept. of Metal Forming, e-mail: y.gamin@mail.ru
V. V. Yushchuk, Postgraduate Student, Laboratory of Hybrid Nanostructured Materials
D. A. Zlobin, Engineer, Dept. of Metal Forming

Viksa OMK, Vyksa, Russia

A. V. Muntin, Cand. Eng., Director of the Engineering and Technology Center, e-mail: muntin_av@omk.ru

As part of this work, technological modes of deformation (screw piercing and longitudinal rolling) and heat treatment (hardening and tempering) were developed, which were put into practice using a complex of technological equipment at the production site of NUST MISIS. The results obtained formed the basis for the technology for producing seamless hot-rolled pipes from economically alloyed steels of strength class K52, implemented on TRM 73-273. Deformed samples were obtained at the production site of NUST MISIS and finished pipe products on TRM 73-273 and a high convergence of their mechanical properties, regulated for strength class K52 was revealed. The proposed concept makes it possible to implement in practice the production of seamless pipes from new steel grades at the NUST MISIS laboratory site with maximum compliance with industrial conditions. Based on the results of the work, the proposed steel grades can be used as a material for producing seamless pipes with increased corrosion resistance, used in difficult oil field conditions. The used set of NUST MISIS equipment makes it possible to implement a technological scheme for the production of seamless pipes on TRP with a continuous rolling mill in an acceptable range of controlled modes. The composition of the equipment has technological flexibility and makes it possible to carry out physical modeling of the process of deformation and heat treatment and operational verification of product compliance with the required standards.

The work was carried out within the framework of a comprehensive project on the topic “Development and implementation of comprehensive technologies for production of seamless pipes made of new-generation steels with controlled corrosion resistance under complicated operating conditions for the fuel and energy complex of the Russian Federation” within the framework of Agreement No. 075-11-2023-011 dated 10.02.2023 according to the RF Government Resolution No. 218 dated 09.04.2010.

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