The bottom of the ship is part of the bottom structure, welded by many pieces of metal plate, forming the shape of the bottom of the ship. Different positions of the bottom of the ship, the force of different positions, according to its force to select the appropriate location of the aluminum alloy is necessary, the use of materials not only to be able to adapt to the load of the force position but also have good performance. 5456 aluminum plate is a kind of marine aluminum plate, for the production of the bottom of the ship is also a more appropriate material.

 

5456 aluminum plate  welding and argon arc welding when the tendency to form  intergranular cracks; alloy quenching and cold hardening after cutting performance is still good, in the annealed state is not good. Corrosion resistance is not high, often used anodizing treatment and coating method or surface coated with aluminum layer to improve corrosion resistance, 5456 alloy performance in the outer board for the material requirements, and has a good effect.