APPLICATION OF THE C-TEST METHODOLOGY FOR THE VALIDITATION OF BOUNDARY CONDITION FOR OIL QUENCHING PROCESS

摘要

The article is aimed at the heat treatment cooling process. In the first part, the quantification of the combined heat transfer coefficient (CHTC) by cooling in quenching oil ISO MAX 166 is presented. The cooling curve was obtained by the methodology of the Wolfson's test (DIN 9950). Using the statistical approach, inverse heat conduction method and computer modeling, the boundary condition (CHTC) as the function of the probe surface temperature was obtained. The validity check of the obtained CHTC is the objective of the second part. The methodology of data validation was based on the C-test. The tested part (tube) with a defined slot was cooled in the oil ISOMAX 166 at the same conditions as the Wolfson's probe. Computer modeling of temperature and stress-strain fields in the tested part and evaluation of the results proved that the obtained CHTC of the Wolfson's test is acceptable. The task was solved by finite element method, using the engineering-scientific program code ANSYS.