Heat Treatment Process Exploration with HTP Sim

Abstract Heat treatment recipes consist of several processing steps developed to meet part specifications. Those in industry must have knowledge of a variety of factors that influence heat treat outcomes such as the effects of different process steps, material hardenability, and part geometry. A typical hardening process for steels involves austenitizing, quenching fast enough to create hardened martensite, and tempering to reduce brittleness. Thermochemical steps like carburizing or nitriding alter the surface chemistry of a part, affecting hardenability. Computer modeling can be used as a way to quantify the effects of heat treat by predicting profiles of temperature, carbon, hardness, and microstructure. Using Heat Treatment Process Simulator (HTP Sim), a commercial finite-element based tool developed by DANTE Solutions, four common heat treat processes are reviewed including furnace heating, carburizing, quenching, and tempering. This study focuses simulation applications to industrial challenges like optimizing process times, ensuring case depth and surface hardness, carburization recipe development, and equipment characterization for modeling.