Systematic analysis of cooling curves for liquid quenchants

Landek, Darko and Župan, Josip and Filetin, Tomislav (2012) Systematic analysis of cooling curves for liquid quenchants. = Systematic analysis of cooling curves for liquid quenchants. International Heat Treatment and Surface Engineering, 6 (2). pp. 51-55. ISSN 1749-5148. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. . Točan broj autora: 3.

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Abstract

This investigation suggests and describes a systematic approach to the analysis of liquid quenchant characteristics using a standard ISO Inconel alloy probe. A new systematic mathematical model for the cooling curve analysis has been developed. The model allows for a more precise determination of quenching parameters and links certain parameters with a mathematical model for microstructure prediction and properties of quenched work pieces. Besides the usual technological parameters (cooling rate at 700°C, maximum cooling rate, cooling time from 800 to 500°C, cooling rate at 300°C, quenching intensity H), the heat transfer coefficient is determined using the following methods: the lumped heat capacity method, the Kobasko method and the inverse heat transfer method according to 'SQIntegra' software. The results of the heat transfer coefficient calculation according to the aforementioned methods are compared and verified with the ISO Inconel alloy probe cooling curve analysis for quenching in water, industrial quenching oil and water based polyalkylene glycol (PAG) polymer solution with concentrations from 5 to 30 vol.- PAG in water. © 2012 IHTSE Partnership.

Item Type:	Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian):	Analysis of liquids; Cooling curve; Cooling curve analysis; Cooling rates; Cooling time; Inconel alloys; Inverse heat transfer; Lumped heat capacity methods; Maximum cooling; Quenchants; Quenching Oil; Quenching parameters; Systematic analysis; Technological parameters; Water based; Work pieces; C (programming language); Cooling; Glycols; Heat transfer coefficients; Mathematical models; Phase diagrams; Probes; Quenching
Subjects:	TECHNICAL SCIENCE
Divisions:	1000 Department of Materials > 1010 Chair of Materials and Tribology 1000 Department of Materials > 1020 Chair of Heat Treatment and Surface Engineering
Indexed in Web of Science:	No
Indexed in Current Contents:	No
Date Deposited:	28 Apr 2015 11:48
Last Modified:	09 Mar 2016 13:24
URI:	http://repozitorij.fsb.hr/id/eprint/3945

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