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Corrosion Where the rope is working in a corrosive environment, protection of the individual wires should be considered, especially if the rope life is expected to be in excess of 12 months. In such cases, it is essential to safeguard the integrity of the smaller, inner wires of the rope in order to maintain the constructional stability and also the working safety of the rope. Zinc has been the conventional coating on wire, but KISWIRE is now offering a much superior coating based on a Zinc/Aluminum alloy – ALUMAR, (see the details overleaf). In applications such as Riser Lines, additional corrosion protection can be achieved by the use of a plastic impregnated core. The plastic will give added protection to the centre wires and also offer greater support to the outer strands, resulting in extended rope life. All information and data provided are for guidance only and it is recommended that individual requirements be discussed with KISWIRE. Neptune Alumar Neptune Alumar Neptune ALUMAR provided by the special zinc/aluminum al loy coat ing. Neptune ALUMAR is an exciting new development, stemming from a major investment programme led by KISWIRE’s R&D Center. Neptune ALUMAR has excellent corrosion resistance and superior rope fatigue performance compared to conventional galvanising. The special, ductile zinc/aluminum coating, combined with highly effective, water repellent blocking compounds, provide three times greater life in sea water than the conventional product. This powerful combination of corrosion resistance, durability and highest strength rope, significantly extends useful life of rope in a marine environment. Neptune ALUMAR provides a 21st century solution for the offshore oil and gas industry:- • Unparalleled high strength to weight ratio • Extended tension-tension and bend fatigue life • Remarkable corrosion resistance A quality assured product from design through to installation. Coating Rural Industrial Marine Severe Marine ALUMAR 7 9 10 12 Galvanised 14 21 19 24 Coat Loss in g/m 2 /year Loss in Coating (g/m 2 ) Exposure Period (years) 200 180 160 140 120 100 80 60 40 20 0 0 2 4 6 8 10 Product Selection GALVANISED ALUMAR Corrosion Induced Coat Weight Reduction Over Time Rope Lubricat ion Effective rope lubrication during manufacture by the selection and application of the optimum lubricant can increase fatigue life, minimise wear and provide corrosion resistance to extend the service life of wire rope. All Neptune ropes are filled with an impermeable, semi solid, anti corrosion blocking compound. This provides lubrication for the rope which reduces internal abrasion damage, as well as increasing rope service life through resistance to penetration of the rope by seawater. A range of manufacturing lubricants is available to satisfy particular seawater salinity and temperature. Cycles to failure Influence of rope lubricant on bend fatigue performance 0 50 100 150 200 (000’s) 150,000 High performance lubricant 100,000 General lubricant 25,000 Dry rope