The liner in crusher was analyzed

and the composition optimization design and modification were conducted.The gating system is enlarged running system containing several flat horn ingates and heat insulating riser with knock-off head

and negative pressure cast（EPC）process was adopted and a self-developed modifiers were used."Quenching & tempering"heat-treat process was conducted by strictly controlling quenching temperature

holding time and cooling rate.The mechanical properties and abrasion resistance of high manganese alloy were improved.This crusher liner has a good grain microstructure

density and quantity of carbide as well as good amount

shape

size and distribution of retained austenite

whoses mechanical properties and wear resistance are significantly better than those of commercial liner.