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Analysis of Transient Boiling Processes during Steel Quenching in Water PAG Solutions to Decrease Distortion

Author

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  • Nikolai I. Kobasko
  • Anatoly A. Moskalenko

Abstract

The paper discusses results of testing standard cylindrical probe 12.5 mm diameter in water polymer solutions which was additionally instrumented with a surface thermocouple. It is shown that central thermocouple cannot depict many physical phenomena taking place during quenching in polymer solutions such as shoulder formation, self- regulated thermal process establishing, surface temperature transient from film boiling to nucleate boiling process. Moreover, it is shown that experimental data depicted by central thermocouple cannot be used for solving inverse problem to analyze quenching process in liquid media. Along with analyzing film and nucleate boiling processes during quenching, the paper discusses the possibility of quality quench process control via using sonar system. It is established an equation for evaluating duration of transient nucleate boiling process. As an example, the cooling characteristics of fresh and old polyalkylene glycol (PAG) polymer solutions are analyzed. It is shown that with passing time the critical heat flux density of polymer decreases and inverse solubility effect disappears. That is while the method and apparatus were developed to control in industrial condition the quality of quenched steel parts during hardening in liquid media.

Suggested Citation

  • Nikolai I. Kobasko & Anatoly A. Moskalenko, 2021. "Analysis of Transient Boiling Processes during Steel Quenching in Water PAG Solutions to Decrease Distortion," European Journal of Applied Physics, European Open Science, vol. 3(6), pages 7-14, November.
    • Handle: RePEc:epw:physic:v:3:y:2021:i:6:id:11131
    DOI: 10.24018/ejphysics.2021.3.6.131
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    Cited by:

    1. Nikolai I. Kobasko, 2022. "Transient Nucleate Boiling Process Used for Obtaining Super Strong Carbon Steels and Irons," European Journal of Applied Physics, European Open Science, vol. 4(1), pages 71-77, January.

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