OPTIMIZATION OF TEMPERATURE HARDENING FOR IMPROVING THE HEAT RESISTANCE OF TOOL STEEL 4Х5MФ1С IN VARIOUS WORKPIECES. PART 2. THE CHOICE OF THE MODE OF HARDENING STEEL 4Х5MФ1С TO INCREASE THE HARDNESS AND HEAT RESISTANCE AFTER TEMPERING
https://doi.org/10.21122/1683-6065-2017-3-70-77
Abstract
A new mode of heat treatment, including oil quenching from temperature 1150 °C with tempering at 500–650 °С for 1,5 hours was developed. The effect of increasing the level of hardening and the heat resistance is determined by more complete dissolution of the steel matrix, the coarsening of grains and morphology of the primary phase of the structure and as a result of high temperature heating and increasing of the number of secondary phases as a result of the tempering. The results of the work could be used in production of working parts is highly resourceful tool for heat forming.
About the Author
V. N. Fedulov
Belarusian National Technical University
Belarus
Minsk, Belarus, 65, Nezavisimosti ave.
Belarus
Minsk, Belarus, 65, Nezavisimosti ave.
References
1. Fedulov V. N. Vlijanie uslovij ohlazhdenija i razmera zagotovki pri lit’e instrumental’noj stali na sposobnost’ k posledujushhemu termicheskomu uprochneniju poverhnosti [Influence of cooling conditions and the size of stock material during the casting of tool steel on capability to the subsequent thermal hard-facing]. Lit’e i metallurgija = Foundry production and metallurgy, 2016, no. 3, pp. 117–127.
2. Fedulov V. N. Instrumental’naja stal’[Tool steel]. Patent RB, no. 20160501, 2016.
3. Fedulov V. N. Obmazka dlja diffuzionnogo karbonitrirovanija stal’nyh izdelij [Coating for diffusion carbonitriding of steel products]. Patent RB, no. 20160204, 2016.
Review
For citations:
Fedulov V.N. OPTIMIZATION OF TEMPERATURE HARDENING FOR IMPROVING THE HEAT RESISTANCE OF TOOL STEEL 4Х5MФ1С IN VARIOUS WORKPIECES. PART 2. THE CHOICE OF THE MODE OF HARDENING STEEL 4Х5MФ1С TO INCREASE THE HARDNESS AND HEAT RESISTANCE AFTER TEMPERING. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2017;(3):70-77. (In Russ.) https://doi.org/10.21122/1683-6065-2017-3-70-77
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