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Windkraft Journal: Wind Energy Hamburg 2024 highlight offshore flange milling
Windkraft Journal: CNC Onsite’s Wind Energy Hamburg 2024 highlight offshore flange milling
Reporting for German wind energy professionals, Windkraft Journal has highlighted in its news on Wind Energy Hamburg CNC Onsite’s precise machining of offshore transition pieces. The machine called Goliath was developed for CS WIND Offshore to mill flanges for transition pieces. These offshore flanges are produced at CS WIND Offshore’s manufacturing site in Aalborg.
Large flanges, in particular, are technically complex to assemble as the pair of surfaces must match evenly to fix reliably in place.
Wind turbine flanges using bolted connections must be flat to two millimeters to maintain structural strength, fatigue resistance and sustain correct bolt tightening during operation.
Because loose bolts can be associated with significant repair costs -and downtime- precise flange connections will become more important in the future as offshore flanges increase in diameter.
Achieving the best possible fit between the wind turbine tower flange and its base during the manufacturing process reduces the requirement for routine retightening and associated downtime, also potentially resulting in longer wind turbine service life.
