DOI: 10.18503/1995-2732-2020-18-4-32-38
Abstract
The paper contains a rationale for the prospect of using high-strength structural steels in manufacturing welded structures, hoisting and transport equipment and various elements of equipment operating at low temperatures in the Far North (down to -60°C). It is shown that EN 10025-6 is a main document regulating the set of requirements for the chemical composition and mechanical properties of structural high-strength cold-resistant steels. By analyzing the regulatory documents, as well as technical specifications of large Russian and foreign manufacturers of this type of rolled products, the authors determined a set of requirements to be met by the products: high strength (Rm= 700–950 MPa, ReH ≥ 600 MPa), ductility (relative elongation А5 ≥ 14%, minimum bending radius ≥2t), as well as resistance to low temperatures (KCV-60 ≥ 34 J/cm2). It was revealed that the required set of properties for steel products with a thickness of 8 to 50 mm was achieved by steel quenching followed by high tempering, and for thicknesses of up to 10 mm by using controlled rolling and accelerated cooling.
Keywords
High-strength cold-resistant steel, technical requirements, hot-rolled steel sheets for Arctic service, structural steel, mechanical properties.
For citation
Poletskov P.P., Kuznetsova A.S., Alekseev D.Yu., Nikitenko O.A., Lopatina E.V. Analysis of Global Development in Producing Hot-Rolled High-Strength Cold-Resistant Sheets with a Yield Strength of 600 MPa and over. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2020, vol. 18, no. 4, pp. 32–38. https://doi.org/10.18503/1995-2732-2020-18-4-32-38
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