Key points of design for steel wire rope sling

The design of steel wire rope includes structural design, mechanical performance design, friction performance design, and anti-corrosion design. The structural design mainly involves the calculation of wire distribution and determination of twisting parameters for steel wire ropes; The mechanical performance design is to ensure that the breaking force of the entire rope meets the requirements, while the friction performance design and anti-corrosion design are to ensure the wear resistance and anti-corrosion ability of the steel wire rope, to resist the damage caused by the use environment to the steel wire rope, and to ensure that the service life of the steel wire rope meets the user's requirements. Below, the editor of Xianji.com will introduce the design points of steel wire ropes.

The design of steel wire rope aims to ensure its performance and prolong its service life as much as possible, and to suppress and delay the occurrence of micro motion fatigue or corrosion fatigue through technical measures.

The basic principles for designing steel wire ropes are circular cross-section filling, low surface wear rate of steel wire, slow initiation and propagation rate of microcracks, low corrosion rate, moderate flexibility, retention of certain gaps in concentric layers, and high production efficiency. When designing the structure of steel wire rope, the basic principle is to fill the circular cross-section steel wire as much as possible, and to increase the density coefficient of the steel wire rope as much as possible to ensure that the steel wire rope can withstand the maximum tensile force and fully exert its mechanical properties.

To achieve the goal of low surface wear rate of steel wires, specific measures that can be taken include selecting lubricating grease suitable for the usage environment, coating materials that can protect the steel wire surface, and matching the hardness between the steel wires in contact. Coating technology is an important technical means to prevent micro motion wear of steel wires. The coating material should be firmly bonded to the steel wire substrate, wear-resistant and corrosion-resistant. The coating only needs a relatively thin thickness to achieve the ideal protection effect, and the breaking force of the steel wire rope should not be reduced due to the use of coating materials. The coating material must be able to undergo a certain degree of bending deformation along with the steel wire, and cannot detach from the steel wire substrate during repeated bending deformation.