Damen Marine Components (DMC) has developed a pioneering nozzle production method (https://www.swzonline.nl/weblog/3) bases on a single weld seam on the inner side of the nozzle. This makes the process much more efficient and environmentally friendly. The Nozzle Spinning Machine can deliver nozzles up to 4.5 m at short notice.
Based in Hardinxveld in the Netherlands and part of the Damen Shipyards Group, DMC has invested in new spinning machinery for its facility in Gdansk.
Single Weld Seam
Mr Steef Staal, DMC Managing Director, says: “The new spinning machinery, developed in the past two years, makes the production of nozzles much easier and gives an improved end product, because there is only a single weld seam on the inner side of the nozzle. Manufacturing the complete inside of a nozzle in one go is very special. This machine can produce any nozzle profile in every diameter and without the need for auxiliary tools.” Under the traditional construction method, the inner side is constructed from several small welded parts. This is now history and the new method results in a much smoother surface.
Capacity
The spinning machine can produce nozzles with an inside diameter ranging from 1000 mm to 4.5 m. Using a completely automated system, the machine can handle stainless steel, duplex, steel and special steel materials. The new machine is also able to handle the demand for shorter delivery times.
Emission reduction
Propeller nozzles are a sustainable product by definition, because they significantly reduce fuel consumption and thus cut down on CO² emissions. However, the new production method is even more environmentally friendly. “Because there is less welding and grinding this method saves energy and emissions,” Staal says. In addition, the new machinery saves production time and enhances our stable price/quality ratio, making it more cost efficient.