Wire rope slings are used in a wide range of industries around the globe. The superior strength, flexibility, and durability make them suitable for even heavy-duty operations. However, every machine and equipment require routine maintenance to stay in optimal condition. A wire rope sling must be inspected routinely to check for excessive damage and wear since any carelessness can lead to an accident. Here are some of the most common problems to look at during wire rope inspection.
Kinking, crushing, and deterioration
Any deformation that does not straighten out when the rope or sling is stressed must be removed from service. This can also apply to wire rope sling that have widened or stretched due to being linked with a crane hook or shackle pin with an inadequate D/d ratio.
Broken or damaged wires
If you are using single-part slings, five damaged wires in a strand signal that it's time for a replacement. In the case of a multi-part sling, ten randomly damaged wires mean it needs to be replaced.
Severe rope corrosion and lubrication check
Severe rope deterioration indicates that it is time to replace your slings. Light rusting, however, will weaken the power of your slings. If your wire ropes for cranes are engaged in heavy lifting operations, avoid taking a risk by using even a lightly corroded wire.
The outside diameters of wires may exhibit wear and tear symptoms, which could indicate a metal loss. You should think about changing the sling in this situation.
Bent rope and hooks
Wire slings are strong and flexible. But when utilised incorrectly, the ropes frequently sustain critical damage like bending or stretching.
A wire rope sling can function in a scorching environment as long as the heat it absorbs can be transferred to other, cooler parts of the rope. However, if the temperature inside the rope wires rises above 300 degrees Celsius, the cold-pulled wires' microstructure will recrystallise and lose about two-thirds of their tensile strength. If there are any visible signs of heat damage, you should consider replacing them.
Equipment damage from a sling failure can result in extended downtime, expensive repairs, and a significant risk of serious injury or fatality for workers. Wire rope slings should be routinely inspected and maintained to ensure that all material handling operations are carried out securely. Also, the best thing you can do is use only high-quality wire ropes for cranes. This way, you get superior strength and safe operations with an expert installation and inspection.