The term surface damage encompasses all the wear and tear that occurs on the outer layer of steel wire or rope due to external contact. However, it's important to note that any plastic deformation that results from the use of wire pressing die, preshaper, or roll die during the production process is not considered surface damage.
The surface damage of the wire rope is:
A compression injury to wire rope can occur when the strands of the rope are crushed, causing deformation of the rope and uneven lay. This can lead to an increase in stock gap, allowing the hemp core to become exposed. Additionally, the rope diameter can be affected by this deformation, further exacerbating the injury.
There are various types of injuries that can occur with steel wire ropes. One common type of injury is hard bending that can lead to convex hemp core exposure. This type of injury usually occurs after the stock has been damaged. Another type of injury is hanging injury, which is caused by uneven stock tightness after the rope stock is hung. In severe cases, the coiled rope may need to be scrapped due to the extent of the injury. It's important to be cautious when handling steel wire ropes to avoid injury and damage.
Another type of damage to wire rope is the scratch that occurs during transportation or when loading and unloading. This can happen when the rope rubs against rough surfaces or gets caught on sharp edges. The nail injury is another common reason for damage to wire rope. This occurs when the wire rope comes in contact with a nail that is sticking out, causing damage to the inner layers. It is important to be careful when handling wire rope to avoid these types of damages.
Scratches on wire rope occurs when the outer wire strand gets scratched by a hard object as a result of loose outer wire strand.