External wear: The wear of the wire surface of the outer rope stock of the wire rope is caused by the contact friction of the rain wheel and the rope groove of the rope of the stress. When this phenomenon is accelerated and decelerated, the part of the wire rope and the pulley is particularly obvious, and it is manifested as a plane shape. Insufficient lubrication, or incorrect lubrication and dust and sand particles are exacerbated. The wear of the steel wire rope is reduced and the intensity is reduced. When the outer steel wire wears 40%of its diameter, the wire rope should be scrapped. When the diameter of the wire rope is reduced by 7%or more compared to the nominal diameter, the wire rope should be scrapped even if the wire is not found.
External and internal corrosion: Ectological is particularly easy to occur in the atmosphere of the ocean or process pollution. It not only reduces the metal area of the wire rope to reduce the broken strength, but also causes rough surfaces and starts from it to accelerate fatigue. Severe corrosion can also cause the elasticity of the wire rope.
External corrosion: The corrosion of the external steel wire can be observed with the naked eye. When deep pit, cracks, looseness, relaxation, etc. appear on the surface, the wire rope should be scrapped.
Internal corrosion: Internal corrosion ratio is more difficult to find with external corrosion that is often accompanied by it. But the following phenomenon can be identified: changes in the diameter of the wire rope. The diameter of the bending part of the steel rope is usually smaller in diameter. However, the steel wire rope in the static section is often used in the rust accumulation of the outer rope and causes the diameter of the steel wire rope. The gap between the outer rope stocks of the wire rope is reduced, and it is often accompanied by the broken wire between the outer rope stocks. If there are any signs of internal corrosion, the supervisor should be inspected internal inspection of the wire rope. If there is severe internal corrosion, the wire rope should be scrapped immediately.
