Актуальные проблемы в машиностроении том 4 №4

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Актуальные проблемы в машиностроении. Том 4. № 4. 2017 Материаловедение
в машиностроении
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13. Zur festigkeit niedriglegierter stähle mit erhöhtem kohlenstoffgehalt gegen abrasiven
verschleiß / O. Hesse, J. Merker, M. Brykov, V. Efremenko // Tribologie Schmierungstechnik. –
2013. – Vol. 6. – P. 37–43.
14. Effect of base metal composition on the toughness in the heat affected zone of DSAW-
welded largediameter linepipes / C. Stallybrass, O. Dmitrieva, J. Schroder, A. Liessem //
Proceedings of the 6th International Pipeline Technology Conference. – Ostend, 2013. – P. 26–29.
LARGE PARTS HEAT TREATMENT SCHEDULE IMPROVEMENT
Chertovskih E.O.1 , Engineer, e-mail:
Gabets A.V.1 , Ph.D. (Engineering), Development director, e-mail:
Gabets D.A. 2, Ph.D. student, e-mail:
Markov A.M.2, (Engineering), Professor, e-mail:
Okolovich G.A.2, (Engineering), Professor, e-mail:
1 Altai steel-casting factory, 116/52 Kalinina avenue, Barnaul, Altai region, 656037, Russian
Federation
2 I.I. Polzunov Altai State Technical University, 46 Lenina avenue, Barnaul, Altai region, 656038,
Russian Federation
Abstract
The article presents carried out research of steel 20GFL heat treatment influence to toughness
KCV-60 , which is reliability assess of products working in harsh climate. Calculation of equations
by polynominal of 2 toughness KCV-60 exponents is made on the basis of orthographic central
composite planning matrix. Controlled heat treatment with construction of thermal images of
incubation, perlite, and intermediate conversion critical points is applied. The ferrit-sorbite-bainite
structure was found out by means of transmission electron microscopy.
Keywords
cold resistance, ferrite-perlite, lower bainite, hardness, allowed perlite, incubatory
transformation, critical points, intermediate conversion