Computer Modeling of Mechanical Properties, Stresses and Strains of Quenched Steel Specimen
Based on theoretical analyze of physical processes which exist in quenching systems the proper mathematical model is established and computer software is developed.
On the basis of control volume method the algorithm for prediction of hardness distribution, residual stresses and strains in quenched steel specimens with complex geometries have been established. The mathematical model of steel hardening is consisted of numerical calculation of temperature field change in process of cooling, and of numerical simulation of hardness. The hardness has been predicted by the conversion of calculated time of cooling from 800 °C to 500 °C to hardness results, using the Jominy hardenability curve.
The algorithm is completed to solve 3-D situation problems such as the quenching of complex cylinders, cones, spheres, etc. Surface heat transfer coefficient was obtained by the calibration.
The established model of steel quenching could be successfully in the practice of heat treatment.
The established method in efficient approach combines the no expensive experimental Jominy-test and computer simulation in prediction of mechanical properties and behavior of steel during the quenching.
Keywords: Numerical techniques; Computer modeling; Quenching