The Application of Steel-Aluminum Transition Joints

In order to reduce the dead weight of the hull, increase the carrying capacity of the ship, increase the speed and reduce the center of gravity of the ship to increase the stability of the ship, many countries in the world now tend to use the steel of the ship when building large and medium-sized ships and ships with special missions. The superstructure or deckhouse is changed to an aluminum structure, which connects the aluminum superstructure to the steel main deck.
Due to the many shortcomings of the traditional rivet connection method, since the 1970s, it has been gradually replaced by aluminum-steel transition joints using welded connections.

What is the production process of steel-aluminum transition joints?

Phohom’s aluminum to steel transition joints, also known as aluminum-steel composite panels, are composited by an explosion welding process. Explosion welding process can join a wide variety of compatible and non-compatible metals together – more than other forms of welding. This makes it the ideal way to weld dissimilar metals together.

When making the steel-aluminum transition joints by explosion welding, a thin layer of process plate should be added between the aluminum alloy and the steel plate. This layer of thin plate can be made of pure aluminum plate or pure titanium plate. In this way, the aluminum-steel transition joint is actually a three-layer transition joint of two types, aluminum-aluminum-steel or aluminum-titanium-steel.

So, welding aluminum and steel together can be done.