When inspecting the rope, check the inside and outside carefully. When either party wears out, the rope becomes noticeably weaker. As a general rule for braided ropes, when the rope abrasion caused by friction is ≥ 25% or the fiber is broken, it should no longer be used. For double braided ropes, 50% of the sheath wear meets the scrap standard, and for three-strand ropes, 10% wear meets the scrap standard.
In this case, the strength of the rope is relatively stable, and there will be no increase in strength loss. However, if the surface roughness increases, it will lead to excessive wear, resulting in a loss of strength.
Glossy or glazed area
Shiny or glazed areas are signs of thermal damage, and this loss of strength is greater than the loss caused by molten fiber.
Diameters are not the same
Check flat areas for bumps or lumps.
Areas with inconsistent or hard textures indicate that there may be too much dust, grit embedded in the cable, or impact load that may cause damage to the cable.
The remaining strength of the rope is tested, and the rope samples in use are tested regularly to ensure that the scrap standards are updated to reflect the actual use.
After use, all cables will become dirty. But pay attention to check the discolored areas that may be caused by chemical contamination.