Pushing coke is an important process in coke oven production. In the process of pushing coke, under the three-body contact state of steel, coke powder, and refractory brick, coke powder plays an important role in lubrication. In this article, a study on the macro- and micro-behavior and mechanism of coke powder lubrication is carried out through tribological tests. The results show that in the process of sliding friction, coke powder plays a role of lubrication through forming a powder layer and shearing occurred inside the powder layer. The load keeps at 5 MPa, under the lower velocity, the powder layer is thinner and delamination occurred in local position. While under the higher velocity, the coke powder can form a compact and complete powder layer and exhibit better lubrication characteristics. However, when the velocity increases to 0.52 m/s, the continuous powder layer is not formed, so the friction coefficient is higher, the frictional surface wears seriously and results in vibration to occur. The velocity keeps at 0.40 m/s, and the powder layer inclines 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.

推焦是焦炉生产中的重要过程。在推焦过程中，在钢，焦粉和耐火砖的三体接触状态下，焦粉在润滑中起着重要作用。本文通过摩擦学试验研究了焦粉润滑的宏观和微观行为及机理。结果表明，在滑动摩擦过程中，焦炭粉通过形成粉末层起到润滑作用，并且在粉末层内部发生剪切。负载保持在5 MPa，在较低的速度下，粉末层变薄，局部位置发生分层。在较高速度下，焦炭粉末可以形成致密而完整的粉末层，并表现出更好的润滑特性。但是，当速度增加到0.52 m / s时，由于未形成连续的粉末层，因此摩擦系数较高，摩擦表面严重磨损，并产生振动。速度保持在0.40 m / s，并且粉末层在更高的载荷下倾向于劣化。当负荷增加到20 MPa时，一部分粉末层会受到损坏，并且表面会发生严重磨损。