Criteria for scrap of wire ropes and ropes

1. When wire breakage occurs at or near the end of the rope sheath, even if the number is very small, it indicates that the stress in the part is very high, which may be caused by incorrect installation of the rope end. The cause of damage should be identified. If the length of the rope is allowed, the broken wire should be cut off and re-installed reasonably.

2. If the broken wires close together form local aggregation, the wire rope sheath shall be scrapped. If the broken wires are concentrated in a rope length less than 6 days or in any strand, the steel rope sheath should be scrapped even if the number of broken wires is less than the values listed in the table.

3. In some occasions, fatigue is the main cause of wire rope damage. Wire breakage occurs only after a period of use, but the number of broken wires increases gradually and the time interval becomes shorter and shorter. In this case, in order to determine the increase rate of broken wire, it is necessary to carefully examine and record the increase of broken wire. This "rule" can be used to determine the future abandonment date of wire rope.

4. If the whole strand breaks, the wire rope should be scrapped. When the diameter of the wire rope is significantly reduced due to the damage of the fiber core of the wire rope or the breakage of the steel core (or the inner strand of the multi-layer structure), the wire rope should be scrapped.