What are the main characteristics of lifting wire rope?

As a key component of lifting machinery, the characteristics of lifting wire rope directly affect the safety and efficiency of lifting operations. The main characteristics include:

High strength:
The wire rope is twisted from multiple high-strength steel wires and can withstand huge tensile force, which is the basic guarantee for the safety of lifting operations. Wire ropes of different specifications and types have different rated lifting loads.

Flexibility:
In order to adapt to the winding of pulleys and drums during lifting, the wire rope needs to have good flexibility. Wire ropes with good flexibility can reduce bending stress and extend service life. The flexibility of wire ropes is affected by factors such as its structure, wire diameter and twisting method.

Wear resistance:
During lifting operations, wire ropes will rub against pulleys, drums and hoisted objects, so they need to have good wear resistance. Wire ropes with good wear resistance can reduce wear, extend service life and ensure operation safety. The wear resistance of wire ropes is affected by factors such as its material, surface treatment and use environment.

Fatigue resistance:

Wire ropes are subjected to repeated stretching, bending and twisting stresses during operation, which can easily lead to fatigue fractures. Good fatigue resistance can extend the service life of wire ropes and reduce safety risks. The fatigue resistance of wire ropes is affected by factors such as its structure, manufacturing process and use conditions.

Corrosion resistance:

Wire ropes for cranes working in humid or corrosive environments need to have a certain degree of corrosion resistance to prevent rust from causing strength loss and early damage. Galvanized steel wire or plastic-coated wire ropes are usually used to improve their corrosion resistance.

Rotation resistance:

For certain lifting operations that need to prevent the load from rotating, special low-rotation or non-rotation wire ropes are selected. These wire ropes use a special twisting method to balance internal stresses, thereby reducing or eliminating rotation.

Diameter stability:

In the case of multi-layer winding, the wire rope needs to have good diameter stability to ensure neat arrangement on the drum and avoid problems such as tangled ropes and rope biting. Compacted strand wire ropes usually have better diameter stability.

High temperature resistance:

Cranes working in high temperature environments need to use wire ropes that can withstand the corresponding temperature. The material and core material of the wire rope will affect its high temperature resistance. For example, wire ropes with metal cores usually have better high temperature resistance than wire ropes with fiber cores.