Published Online: 1 April 2012
Page Count: 8
Simencio Otero, Rosa Lucia
Dept. of Materials Engineering, Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos/SP,
(Received 31 August 2011; accepted 2 February 2012)
Although heat transfer coefficient characterization of quench severity is not new, there continues to be a need for the rapid and relatively simple calculation of heat transfer coefficients from time-temperature cooling curve data files obtained via test methods such as ASTM D6200, D6482, D6549, and D7646, which utilize relatively small cylindrical test probes with diameters of ≤12.5 mm. One method that may be readily used is Kobasko’s computational method for effective heat transfer coefficients, which is based on time-temperature data obtained at the geometric center of small test probes during cooling curve analysis. A description of the step-by-step procedure for performing these calculations on actual experimental data is provided here.
Paper ID: JAI104304