Views: 0 Author: Faker Publish Time: 2022-08-11 Origin: Universe
Wire rope wear generally includes external wear, internal wear and deformation wear.
External wear is the wear caused by the contact of the steel wire rope with the sliding, drum wall, hook head and other surfaces. After external wear, the rope diameter will become smaller, and the thin steel wire at the periphery will be polished flat, and the strength of the steel wire rope will also decrease. The cross-section of the externally worn wire rope decreases, and the breaking force of the wire rope also decreases accordingly.
The deformation of steel wire rope caused by vibration and collision is called deformation wear after friction, which is a local wear phenomenon. The steel wire rope on the surface of the steel wire rope is impacted by other hard objects, such as the drum surface, and the hoisting steel wire rope of the crane is entangled, which will cause deformation and wear of the steel wire rope. If the wire rope is cut off, the diameter of the rope does not decrease, but the width changes greatly, which will harden the local steel wire and easily break the wire, resulting in accidents
In the process of use, the pressure borne by the steel wire rope when it passes through the drum or slide is pressed on one side of the steel wire rope. The radius of curvature cannot be completely the same due to different pressures of the steel wire. At the same time, due to the bending of the steel wire rope, the internal thin steel wires will generate mutual force and slip. At this time, the contact stress between the strands will increase, and the steel wires between adjacent strands will produce local indentation. When the tensile bending is repeated, the stress concentration occurs in the deep recess and is broken, which constitutes internal wear Generally, the pressure on the surface of the fine steel wire is proportional to the pressure of the steel wire rope. Under the same tension, the pressure per unit area is different due to the different compression areas.