摘要：Pushing coke is an important process in coke oven production. In the process of pushing coke, under the three-bodycontact state of steel, coke powder, and refractory brick, coke powder plays an important role in lubrication. In this arti-cle, a study on the macro- and micro-behavior and mechanism of coke powder lubrication is carried out through tribolo-gical tests. The results show that in the process of sliding friction, coke powder plays a role of lubrication throughforming a powder layer and shearing occurred inside the powder layer. The load keeps at 5 MPa, under the lower velo-city, the powder layer is thinner and delamination occurred in local position. While under the higher velocity, the cokepowder can form a compact and complete powder layer and exhibit better lubrication characteristics. However, whenthe velocity increases to 0.52 m/s, the continuous powder layer is not formed, so the friction coefficient is higher, thefrictional surface wears seriously and results in vibration to occur. The velocity keeps at 0.40 m/s, and the powder layerinclines to deteriorate under higher load. When the load increases to 20 MPa, a part of the powder layer is damaged,and severe wear occurs on the surface.
