What is the shrinkage of the fabric?

(1) Impact

Impact from the outside, short-term huge impact will destroy the cross-sectional area of steel wire rope for harbor machinery; or rope strands or steel wire. Impact resistance is the ability of the wire rope to resist sudden external forces. When the wire rope is deformed or partially broken due to sudden impact, the steel wire inside the rope will be difficult to move and slide normally, and the pulling force will be greatly reduced, resulting in a decline in the overall performance of the wire rope.

(2) Stability

Stability usually refers to the use and working performance of the wire rope used in port machinery.

(3) Flexibility

Flexibility refers to the difficulty of bending the wire rope into curved shapes by port machinery. The important factor affecting the bending performance is the diameter of the wire rope. The larger the diameter, the worse the curvature; followed by the rope strand structure, technical components and core structure.

(4) Strength

When the wire rope used in harbor machines breaks under a certain gravity, this value is called the breaking force. The sum of the breaking forces is the sum of the breaking forces of all the wires. When used, it is important to choose a wire rope with the appropriate strength based on the breaking force of the wire rope and your own requirements. It should be noted that the strength must be less than the small breaking force of the wire rope.

(5) Fatigue resistance

Port machinery with a qualified breaking force of steel wire rope, but poor fatigue resistance is also unqualified. Due to the poor fatigue resistance, the wire rope is easy to break in the process of use, resulting in safety hazards and losses.

(6) Abrasion resistance

Abrasion resistance mainly depends on the structural design and technology of steel wire rope for port machinery. Therefore, reducing the number of strands of steel wire rope for harbor machinery can improve its abrasion resistance.

(7) Corrosion resistance

Corrosion resistance refers to the corrosion resistance of steel wire rope used in port machinery. The main reason for deciding the corrosion resistance of steel wire rope for port machinery is the composition of the material. Stainless steel materials containing chromium, nickel and molybdenum usually have excellent corrosion resistance.

(8) Resistance to metal loss and deformation

Metal loss refers to the wear and tear of the external steel wire of the wire rope used in port machinery during actual operation; metal deformation refers to the change in the shape of the wire rope's external steel wire. The corrosion resistance of the metal is actually wear resistance; the general deformation of the metal is called "hammering", the exposed side is like being hammered by a hammer.

(9) Residual stress

Residual stress refers to the residual stress produced by various deformations in the molding process of steel wire rope for port machinery. Residual stress is the main cause of fatigue failure of steel wire rope. These stresses amplify the small cracks in the steel wire during repeated deformation, resulting in cracks getting bigger and bigger, leading to steel wire fracture and ultimately leading to wire rope failure. Residual stresses in the rope can be eliminated by mechanical or thermal treatment; post-deformation and pre-deformation of steel wire ropes for harbor machinery in the post-laying stage and before laying can effectively reduce the stresses in steel ropes for harbor machinery.