Numerical study of creep effect on purging plug performance under cyclic service

Abstract The service life of the purging plug is one fundamental factors that determine downtime and usage efficiency whole ladle. creep behaviour was thus investigated to identify possible failure mechanism. At first, parameters Norton–Bailey strain hardening rule were inversely identified via results test. Then, thermal-solid coupling model approach employed predict plug, in which applied. numerical show temperature presents a cyclic trend after first period since preheating lower than molten steel. Furthermore, distribution intensity layered form could also contribute gradual spalling end service. Besides, concentration around slit can be responsible for clogging plug.