Journal Published Online: 03 December 2009
Volume 7, Issue 2

Prediction of Quench-Hardness within the Whole Volume of Axially Symmetric Workpieces of Any Shape

CODEN: JAIOAD

Abstract

A quench probe, based on the Temperature Gradient method was used to measure and record cooling curves when quenching real axially symmetric workpieces of any complex shape in liquid quenchants. Calculation of relevant heat transfer coefficients is based on the cooling curve measured just below surface of the cylindrical probe of 50-mm diameter. A two-dimensional computer program, based on the cooling time from 800°C to 500°C (t8/5), and the Jominy hardenability curve of the steel grade in question, is used to predict the hardness distribution within the whole volume of the workpiece, all at once, which is a unique feature of this method.

Author Information

Liščić, Božidar
Faculty of Mechanical Engineering, Univ. of Zagreb, Zagreb, Croatia
Singer, Saša
Dept. of Mathematics, Univ. of Zagreb, Zagreb, Croatia
Smoljan, Božo
Faculty of Engineering, Univ. of Rijeka, Rijeka, Croatia
Pages: 17
Price: $25.00
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Stock #: JAI102647
ISSN: 1546-962X
DOI: 10.1520/JAI102647