Use foam aluminum sandwich board to make passenger ship, mixed loading ship, cabin, compartment, cabin door, floor, etc., the density of steel 1/20, lightweight energy saving, floor between layers using 1mm thick aluminum plate, 20mm foam aluminum plate, 1mm thick aluminum plate structure, strength is 7 times of steel plate, weight reduction of more than 50% .The separation wall and cabin door can be made of 0.5mm thick aluminum plate, 10mm thick foam aluminum plate, 0.5mm thick aluminum plate sandwich plate, the strength is more than 3 times of the steel plate, sound insulation, comfort, do not burn, corrosion resistance.
2. Noise reduction requirements for engine rooms of common tugboats and cargo ships .
The sound absorption lining of engine room is made of aluminum foam sound absorption board. The thickness of aluminum foam sound absorption board is 10mm, and the cavity behind it is 30-60mm, which can reduce noise by more than 20 db.
