TY - JOUR

T1 - Numerical study of creep effect on purging plug performance under cyclic service

AU - Tan, Fang guan

AU - Jin, Sheng li

AU - He, Zhu

AU - Liang, Xiong

AU - Li, Ya wei

AU - Li, Jing

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51974211, 12072245, and 51834002) and the Special Project of Central Government for Local Science and Technology Development of Hubei Province (Grant Nos. 2019ZYYD003 and 2019ZYYD076). Publisher Copyright: © 2022, The Author(s).

PY - 2022/2/25

Y1 - 2022/2/25

N2 - The service life of the purging plug is one of the fundamental factors that determine the downtime and usage efficiency of the whole ladle. The creep behaviour of the purging plug was thus investigated to identify the possible failure mechanism. At first, the creep parameters of the Norton–Bailey strain hardening rule were inversely identified via the results of the creep test. Then, the thermal-solid coupling model approach was employed to predict the creep behaviour of the purging plug, in which the Norton–Bailey strain hardening rule was applied. The numerical results show that the temperature of the purging plug presents a cyclic trend after the first service period since the preheating temperature is lower than the temperature of molten steel. Furthermore, the distribution of the creep strain intensity in a layered form could also contribute to a gradual spalling of the purging plug end in service. Besides, the creep strain concentration around the slit can be responsible for the clogging of the purging plug.

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

KW - Castable corundum

KW - Creep deformation

KW - Creep test

KW - Purging plug

KW - Strain hardening

UR - http://www.scopus.com/inward/record.url?scp=85125142884&partnerID=8YFLogxK

U2 - 10.1007/s42243-022-00749-9

DO - 10.1007/s42243-022-00749-9

M3 - Article

AN - SCOPUS:85125142884

VL - 2022

JO - Journal of iron and steel research international

JF - Journal of iron and steel research international

SN - 1006-706X

IS - 25 February

ER -