MODELING OF PHASE TURNING PID HOUR OF PERMANENT COOLING OF HIGH-CARBON ALLOYING STEELS

Abstract

On the basis of the author's analytical model together with finite element models, simulation of phase transformations during continuous cooling of high-carbon alloyed steels, intended for the manufacture of metal products of responsible purpose, in particular for the metallurgical and machine-building industries, was performed. The simulation results are summarized by constructing thermokinetic diagrams of austenite decay in the process of continuous cooling of steels 65Cr3SiMoV, 80Cr3MoV, 80Cr5MoV. The obtained results will be used during the adjustment of industrial modes of heat treatment of metal products of responsible purpose, in particular, back-up rolls of rolling mills. At the next stage of research, it is advisable to construct isothermal and structural diagrams of steels 65Cr3SiMoV, 80Cr3MoV, 80Cr5MoV including the determination of the distribution of structural components according to the depth of the strengthened layer (0–100 mm), which will allow to create scientifically based principles for improving the technology of heat treatment of support rolls rolling mills, which are made of high-carbon alloy steels.