Development of an Innovative Digital Cooling Technology (Differential Heat Treatment) for EVRAZ NTMK Rails.

Autor: Kushnarev, A. V., Smirnov, L. A., Kirichkov, A. A., Dobuzhskaya, A. B., Khlyst, S. V., Kuzmichenko, V. M., Khlyst, I. S., Gontar', A. V., Belokurova, E. V.
Zdroj: Steel in Translation; Jun2020, Vol. 50 Issue 6, p415-419, 5p
Abstrakt: TEC-DT differential heat hardening technology is developed based on the process of digital control of air humidity by high-efficiency mixing of air flows and the water ejected by it. The wide-range cooling rate control (2–14°C/s) makes it possible to heat hardened rails made of different steels, such as carbon steels, with a wide range of carbon content, and microalloyed and alloyed steels, while achieving the level of properties required for rails of both general and special purposes (low-temperature reliability and increased wear resistance). The rails, differentially hardened by reheating, have a highly dispersed pearlite structure, and a high level of ductility, impact strength, fatigue strength, and survivability. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index