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Precautions for processing stainless steel wire ropes
2026-06-10
First paragraph: Pre-cutting fixation and cutting process control
Before processing and cutting, the cut edges must be tightly secured on both sides with soft iron wire or strong adhesive tape to counteract the internal twisting stress of the steel wire rope, preventing the strands from spreading apart and the birdcage shape from deforming after cutting. According to the rope diameter, use specialized tools for matching, sharp steel wire rope cutters for fine diameters, and resin grinding wheels for coarse diameters. Do not use ordinary hacksaws for forceful cutting; during cutting, keep the rope straight without twisting or squeezing to ensure that the cutting edge is perpendicular and flat to the rope body, and avoid slanted cuts, flattened areas, or uneven steel wire lengths. After cutting, remove the burrs and sharp corners by grinding, and cut off the damaged sections that cause bluing and color change due to high-temperature cutting to prevent metal brittleness and reduce the overall tensile strength; stainless steel must not be exposed to open flames for prolonged heating to prevent damage to the surface passivation and rust prevention film, and to avoid potential pitting hazards. Second paragraph: Assembly key points for crimping ends and rigging components The materials of the crimping sleeves and rings must match the steel wire rope brand, and preferentially use stainless steel accessories of the same series. Direct contact between different metals is prone to electrochemical corrosion. When making the rope ring, install a metal ring support inside to disperse the bending stress and prevent the straight corner of the rope from wearing and breaking; after the rope head is fully inserted into the sleeve, leave a small amount of tail wire to be reserved, and confirm that it is completely in place before applying pressure. For heavy-load conditions, use hydraulic crimping tools, combined with corresponding specifications of molds, to apply pressure in sections, starting from the end near the rope ring and then to the tail end, ensuring uniform deformation of the sleeve and tight engagement of the rope strands; manual small-scale crimping is only suitable for light-load decorative purposes and must be hydraulically cold-pressed for heavy-load bearing. Do not use knocking or hitting the sleeve to assist in tightening; knocking will cause damage to the steel wire inside and misalignment of the internal wire strands, significantly reducing the breaking tensile strength. Third paragraph: Full rust prevention, forming inspection, and storage protection throughout the process During processing, avoid the steel wire rope being contaminated by iron filings, carbon steel dust, or acidic and alkaline liquids. Iron tools scratching will damage the stainless steel passivation layer, causing rust to spread. After the finished product is processed, clean the surface impurities and apply stainless steel-specific protective lubricating grease as needed, which not only reduces friction and wear but also isolates water vapor and salt corrosion; additional polishing and sealing treatment can be done for seawater or outdoor high-salt environments. After forming, inspect the dimensions and crimping tightness, and sample the key lifting rigging components for breaking tensile strength tests to verify compliance with GB/T9944 standards. The processed finished products should be handled gently, not dragged over rough ground, not bent with a radius less than 10 times the rope diameter; store them in a dry and ventilated place, away from corrosive chemicals, and avoid stacking under heavy pressure and deformation; the transfer of the U-shaped wheel should be fully wrapped and protected to prevent磕碰刮伤 the surface layer. |
