(1) Impact
The impact force comes from the outside, and the short-term huge impact force will damage the cross-sectional area of the steel wire rope used for port machinery; Or rope strands or steel wires. Impact resistance refers to the ability of a steel wire rope to resist sudden external forces. When the steel wire rope deforms or partially breaks due to sudden impact, the steel wire inside the rope will be difficult to move and slide normally, and the tensile force will be greatly reduced, resulting in a decrease in the overall performance of the steel wire rope.
(2) Stability
Stability usually refers to the purpose and working performance of steel wire ropes used in port machinery.
(3) Flexibility
Flexibility refers to the difficulty of bending steel wire ropes into curved shapes for port machinery. The important factor affecting bending performance is the diameter of the steel wire rope. The larger the diameter, the worse the curvature; Next are the rope strand structure, technical components, and rope core structure.
(4) Strength
When the steel wire rope used by the port machine breaks under a certain gravity, this value is called the breaking force. The sum of breaking forces refers to the sum of the breaking forces of all steel wires. When using, it is important to choose a steel wire rope with corresponding strength according to the breaking force of the steel wire rope and one's own requirements. It is important to note that the strength must be less than the small breaking force of the steel wire rope.
(5) Fatigue resistance
The breaking force of the steel wire rope used for port machinery is qualified, but its fatigue resistance is poor and also unqualified. Due to poor fatigue resistance of steel wire ropes, they are prone to fracture during use, resulting in safety hazards and losses.
(6) Wear resistance
The wear resistance mainly depends on the structural design and process of steel wire ropes used in port machinery. Therefore, reducing the number of strands of steel wire rope for port machinery can improve its wear resistance.
(7) Corrosion resistance
Corrosion resistance refers to the corrosion resistance of steel wire ropes used in port machinery. The main reason for determining the corrosion resistance of steel wire ropes for port machinery is the composition of the materials. Stainless steel materials containing chromium, nickel, and molybdenum generally have excellent corrosion resistance.
(8) Resistance to metal loss and deformation
Metal loss refers to the wear and tear of the outer steel wire of the steel wire rope used in port machinery during actual operation; Metal deformation refers to a change in the shape of the outer steel wire of a wire rope. Metal erosion resistance is actually wear resistance; The general deformation of metal is called 'hammering', and the exposed side is like being hammered by a hammer.
(9) Residual stress
Residual stress refers to the residual stress generated by various deformations during the forming process of steel wire ropes used in port machinery. Residual stress is the main cause of fatigue failure of steel wire ropes. These stresses amplify the small cracks in the steel wire during the repeated deformation process, causing the cracks to become larger and larger, causing the steel wire to fracture and ultimately leading to the failure of the wire rope. The residual stress in the rope can be eliminated through mechanical or heat treatment; The post deformation and pre deformation of steel wire ropes for port machinery in the post lay stage and before lay can effectively reduce the stress in the steel wire ropes for port machinery.
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