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Safety inspection of steel wire ropes
2025-04-23
The safety inspection of steel wire ropes is of vital importance. The following are the main contents and methods of its inspection:
Visual inspection Wear inspection: Use tools such as calipers to measure the diameter of the steel wire rope and compare it with the original diameter. If the diameter decreases by more than the specified value, such as within one twist, and the outer steel wires wear up to 40% of the original diameter, it should be scrapped. Observe the wear marks on the surface of the steel wire rope and check if there are any severe local wear conditions, such as the contact areas between the pulley, drum and the steel wire rope. Broken wire inspection: Carefully examine the entire length of the steel wire rope, with particular attention paid to areas prone to broken wires such as the rope ends, pulleys, and drums. If the number of broken wires within one lay reaches a certain proportion, for instance, the number of broken wires in a cross-twisted steel wire rope accounts for 10% of the total number of wires, then it is necessary to consider scrapping or reducing the usage grade depending on the circumstances. Deformation inspection: Check whether the steel wire rope has any deformation conditions such as bending, twisting, cage-like distortion, or wavy shape. If wavy deformation occurs, stop using it immediately when the peak height reaches 25% of the wire rope diameter. Check if there is any rust on the surface of the steel wire rope. Minor rust can be treated by oiling or other methods. If severe rust causes pitting or peeling on the surface of the steel wire, it should be scrapped.
Internal inspection |
