Sodronyok

Sodronyok, in English often called wire ropes, are assemblies of multiple steel wires twisted into strands around a central core to form a flexible, high-strength cable. They are designed to lift, pull, or support heavy loads in a variety of industrial applications, including cranes, hoists, elevators, mining equipment, winches, and guying for towers. The performance of a sodronyok depends on its construction, core type, and lubrication, which influence strength, fatigue life, and bending flexibility.

Construction and types: Wire ropes are built from strands of small wires wound together and surrounding a core. Common constructions include 6x19, 6x37, and 7x7, which describe the number of strands and wires per strand. Core options include a fiber core (FC) or an independent wire rope core (IWRC). Higher wire counts per strand generally improve resistance to bending fatigue, while different core types affect strength and stability under load. Manufacturing involves twisting wires into strands, then twisting strands around the core, followed by lubrication and surface treatments that enhance wear and corrosion resistance.

History and standards: The first practical wire rope was developed in the 1830s by Wilhelm Albert for mining applications, marking a turning point in load lifting and material handling. Today, sodronyok are produced to international standards such as ISO 4309 for inspection and discard criteria and EN 12385 for construction, testing, and safety requirements. Maintenance emphasizes regular inspection for broken wires, corrosion, kinks, crushing, and abrasion, as damaged ropes can fail under load. Replacement decisions follow standardized criteria to ensure safe operation.