Study of heat treatment parameters for large-scale hydraulic steel gate track

Abstract

In order to enhance external hardness and strength, a large-scale hydraulic gate track should go through heat treatment. The current design method of hydraulic gate wheels and tracks is based on Hertz contact linear elastic theory, and does not take into account the changes in mechanical properties of materials caused by heat treatment. In this study, the heat treatment parameters were designed and analyzed according to the bearing mechanisms of the wheel and track. The quenching process of the track was simulated by the ANSYS program, and the temperature variation, residual stress, and deformation were obtained and analyzed. The metallurgical structure field after heat treatment was predicted by the method based on time-temperature-transformation (TTT) curves. The results show that the analysis method and designed track heat treatment process are feasible, and can provide a reference for practical projects.

Keywords

• steel gate track
• heat treatment parameter
• residual deformation
• numerical simulation