Abstract: In view of the poor anti-cavitation performance of large dredged mud pump front liner,this paper proposes to replace the existing high chromium alloy steel material with elastomer material,which can slow down the cavitation and abrasire damage to the lining surface.Through the tests of cavitation and abrasion,it is found that polyurethane 72 was more resistant to cavitation and abrasion than elastomer 60,polyurethane 95 and high chromium alloy steel.It could be applied to the mud pump liner,which could effectively improve the corrosion resistance performance of the present high chromium alloy steel liner and extend the usage periodic.

Key words: Mud pump liner, Elastomer erosion, Cavitation, Abrasive erosion