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Steel in Translation

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01.04.2019

Production of Heavy Plates of Pipe Steel with Increased Strength and Cold Resistance on the 5000 Rolling Mill at PJSC MMK

verfasst von: S. V. Denisov, P. A. Stekanov, P. P. Poletskov, M. S. Gushchina, O. A. Nikitenko

Erschienen in: Steel in Translation | Ausgabe 4/2019

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Abstract

Abstract—On the basis of laboratory experiments on an ITs Termodeform-MGTU test system, the production of rolled plates with large thickness from pipe steel of improved strength (R_t 0.5 = 505–610 MPa, R_m = 570–680 MPa) and cold resistance (KV^–48 ≥ 170 J, DWTT^–55 ≥ 90%) is introduced in the 5000 rolling mill at PJSC MMK. To ensure high cold resistance, the formation of predominantly quasi-polygonal and polygonal (polyhedral) ferrite is optimal. It is found that, if the steel microstructure includes a considerable quantity of bainite, the performance of the steel in drop tests is impaired. By means of the Gleeble 3500 test system, the thermokinetic diagram of supercooled-austenite decomposition is plotted for the new low-carbon pipe steel, with up to 1% Ni.

Vorheriger Artikel Improved Electrical Control of Ladle–Furnace Units by Means of Arc-Current Harmonics

Nächster Artikel Drawing of Thin-Walled Welded Pipe

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Titel: Production of Heavy Plates of Pipe Steel with Increased Strength and Cold Resistance on the 5000 Rolling Mill at PJSC MMK
verfasst von: S. V. Denisov
P. A. Stekanov
P. P. Poletskov
M. S. Gushchina
O. A. Nikitenko
Publikationsdatum: 01.04.2019
Verlag: Pleiades Publishing
Erschienen in: Steel in Translation / Ausgabe 4/2019
Print ISSN: 0967-0912
Elektronische ISSN: 1935-0988
DOI: https://doi.org/10.3103/S0967091219040053

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