A METHOD FOR OPTIMIZATION OF THERMO-MECHANICAL PROCESS PARAMETERS TO REDUCE RELAXATION LOSS IN HIGH CARBON STEEL PRODUCT

摘要

A method for optimization of thermo-mechanical process parameters to reduce relaxation loss in high carbon steel product, comprising the steps of: providing a sample of cold drawn high carbon steel (C~ 0.8 %) wire alloyed with mn, si, cr, and v; providing a thermo-mechanical treatment on the sample to obtain a typical cycle on stress-relaxation temperature corresponding to coding time; testing the sample in respect of tensile properties and stress relaxation parameter; measuring the stress relaxation parameter of the sample under different heat-treated conditions and having stressed around 0.7 UTS, determining the optimum process parameters from a comparison of the measured parameters, and correspondingly adjusting the plant temperature.