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Metals 2017, 7(6), 190; doi:10.3390/met7060190

An Efficient Fluid-Dynamic Analysis to Improve Industrial Quenching Systems

1
Centro de Investigación y de Estudios Avanzados del I.P.N., Industria Metalúrgica # 1062, Parque Industrial Saltillo-Ramos Arizpe, Ramos Arizpe 25900, Mexico
2
Rassini Suspensiones S.A. de C.V., Puerto Arturo # 803, Col. Bravo, Piedras Negras 26040, Mexico
*
Author to whom correspondence should be addressed.
Academic Editor: Murat Tiryakioglu
Received: 20 March 2017 / Revised: 16 May 2017 / Accepted: 17 May 2017 / Published: 25 May 2017

Abstract

This paper addresses the problem of understanding the relationship between fluid flow and heat transfer in industrial quenching systems. It also presents an efficient analysis to design or optimize long standing quenching tanks to increase productivity. The study case is automotive leaf springs quenched in an oil-tank agitated with submerged jets. This analysis combined an efficient numerical prediction of the detailed isothermal flow field in the whole tank with the thermal characterization of steel probes in plant and laboratory during quenching. These measurements were used to determine the heat flow by solving the inverse heat conduction problem. Differences between laboratory and plant heat flux results were attributed to the difference in surface area size between samples. A proposed correlation between isothermal wall shear stress and heat flux at the surface of the steel component, based on the Reynolds-Colburn analogy, provided the connection between thermal characterization and computed isothermal fluid flow. The present approach allowed the identification of the potential benefits of changes in the tank design and the evaluation of operating conditions while using a much shorter computing time and storage memory than full-domain fluid flow calculations. View Full-Text
Keywords: steel quenching; quenching heat flux; quenching boiling curve; heat transfer coefficient; quenching fluid flow; oil quenching steel quenching; quenching heat flux; quenching boiling curve; heat transfer coefficient; quenching fluid flow; oil quenching
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Barrena-Rodríguez, M.J.; González-Melo, M.A.; Acosta-González, F.A.; Alfaro-López, E.; García-Pastor, F.A. An Efficient Fluid-Dynamic Analysis to Improve Industrial Quenching Systems. Metals 2017, 7, 190.

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