How To Determine Whether The Steel Wire Rope of A Second-hand Rotary Drilling Rig Needs To Be Replaced?

Steel wire ropes are important load-bearing components of second-hand rotary drilling RIGS, and their condition directly affects construction safety and efficiency. If there is damage but it is not replaced in time, it may cause equipment failure or even safety accidents. The following discusses from six aspects how to determine whether a steel wire rope needs to be replaced.

1. Number of broken wires: If the number of broken wires in a single strand of a steel wire rope exceeds 10% of the total, or if there are more than 5 broken wires in a concentrated area, it must be replaced immediately. Broken wires will significantly reduce the load-bearing capacity, and the risk of continued use is extremely high.

2. Degree of wear: If the diameter of the steel wire rope is worn by more than 10% of its original diameter, or if the surface steel wires show obvious flattening or deformation, it should be replaced in a timely manner. Wear and tear can lead to a decrease in strength and make it prone to sudden fracture.

3. Corrosion condition: If there is extensive rust, pitting, or rust residue accumulation between the steel wires, replacement is necessary. Corrosion can damage the structure of steel wires, reducing their toughness and making them prone to brittle fracture under load.

4. Deformation condition: If there are severe distortions, knots, birdcage-like deformations, etc., and they cannot be repaired, replacement is required. Deformation will change the distribution of force, leading to local stress concentration and causing fracture.

5. Damaged rope core: If the rope core is observed to be exposed, dry or with oil leakage, replacement should be considered. When the rope core loses its lubricating and supporting functions, it will accelerate the wear and aging of the steel wire rope.

6. Service life: Even if the appearance is intact, it is recommended to replace the steel wire rope that has exceeded its designed service life (usually 3-5 years). After long-term use, the performance of steel wire will naturally decline, and the potential risks will increase.

In conclusion, to determine whether the steel wire rope of a second-hand rotary drilling rig needs to be replaced, factors such as broken wires, wear, corrosion, deformation, the condition of the rope core and the service life should be comprehensively considered. If any of the above serious problems are found, they should be replaced in time to ensure construction safety and the normal operation of the equipment.