In order to prolong the life of inner liner of coke can, the thermal fatigue property of Cr17Mn10 heat-resisting steel was analyzed from cast mirostructure, the morphologies of surface and cross-section of the thermal fatigue crack, thermal fatigue damage factors by OM, SEM, photoshop and image tool software. The initiation and propagation rules of thermal fatigue crack were studied. The results show that under 1100 ℃ high temperature and room-temperature water cooling for300 times, Cr17Mn10 heat resistant ...