Intensive Quenching Technology Accuracy Analysis Based on Study Physics of Transient Nucleate Boiling Process

International Journal of Applied Physics
© 2020 by SSRG - IJAP Journal
Volume 7 Issue 1
Year of Publication : 2020
Authors : Nikolai I. Kobasko

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Nikolai I. Kobasko, "Intensive Quenching Technology Accuracy Analysis Based on Study Physics of Transient Nucleate Boiling Process," SSRG International Journal of Applied Physics, vol. 7,  no. 1, pp. 27-35, 2020. Crossref, https://doi.org/10.14445/23500301/IJAP-V7I1P105

Abstract:

Three versions of intensive quenching technologies and accuracy of their performing are discussed in this paper. The first version explores water
salt solutions of optimal concentration as a quenchant with the low or moderate agitation. The second version explores cold water or water salt solutions of optimal concentration agitated by very powerful pumps or highefficiency rotating impellers. The new third version of intensive quenching explores low concentration of water polymer solutions of inverse solubility that creates insulating surface layer during quenching of steel components. The insulating surface layer drops initial heat flux density during quenching below its critical value and by such a way eliminates effectively film
boiling process making quenching very intensive. Instead of powerful pumps or high-efficiency rotating impellers, the low or moderate agitation of quenchant, preferably by hydrodynamic emitters, is used combined with exploring optimal hardenability steel. It is shown in the paper that intensity of cooling in low concentration of water polymer solutions are similar to intensity of cooling in water salt solutions of optimal concentration where cooling process is intensive. New third version of technology is very simple, however it requires the high density of knowledge on quenching process in low concentration of water polymer (PAG) solution and also requires intensive process interruption at proper time. During batch quenching in low concentration of water polymer solutions, the resonance effect can be used for eliminating film boiling process. The new technology saves materials, increases service life of hardened components and makes environment green.

Keywords:

Nucleate Boiling Process, Intensive Quenching Technology , Physics

References:

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