The size, shape, and orientation of steel wire cutting pellets have a significant impact on abrasive wear. They affect the load and stress from elastic contact to plastic contact, and cause changes in the critical fracture indentation size and groove size.
On the contrary, if the load and hardness of the steel wire cutting pellet are constant, the contact area is also constant, depending on the size and shape of the abrasive. When the vertex angles of pyramids, cones, and spheres decrease, the d/A value increases. The 4/4 value of a sphere is often smaller than that of a pyramid or cone, so the wear rate of sharp abrasive particles is higher than that of circular blunt abrasive particles, especially because the indentation depth F of a cone is larger, which easily exceeds t (critical indentation depth), causing the occurrence and propagation of cracks.

It seems difficult to quantitatively calculate the wear rate based on the size and shape of the abrasive under actual working conditions, although it is currently being explored. Because in any environment, the size of the abrasive is always within a certain range, and the size, shape, and orientation are not uniform. Moreover, during the wear process, the abrasive still has sheet-like cracks, and the contact area of the steel wire cutting ball usually only accounts for 10-30% of the total area. The wear rate of steel wire cutting pellets depends not only on the size, shape, and orientation of the abrasive, but also on the properties and friction coefficient of the material surface.
So the shape and orientation of the steel wire cutting ball have a significant impact on the abrasive, and we must pay attention to it.
Editor: Miranda