Application of titanium alloy in shipbuilding field

Application of titanium alloy in shipbuilding field

The corrosion resistance of titanium alloy materials is widely used on ships. It is not only used in larger equipment such as ship manufacturing and cabin facilities. Titanium and titanium alloy materials are also mostly used in other parts, such as electronic information systems, power systems, Auxiliary systems, hull structural parts, propulsion systems, etc.

Foreign titanium alloy materials are mainly used in ship hull structures, power propulsion devices, acoustic devices, etc.

No.1

Pressure resistant shell

In the field of ships, titanium alloy pressure-resistant shells are mainly used in deep submersibles and submarines. Titanium alloy has the characteristics of high specific strength, good corrosion resistance, and non-magnetic properties, making it a high-quality material for manufacturing pressure-resistant shells of deep-sea equipment.

Russia is the first country to use titanium alloy pressure-resistant shells on nuclear submarines, and it is also the world's technology leader. Starting in the 1960s, Russia (the former Soviet Union) manufactured a series of titanium alloy submarines. Initially, the No. 661 titanium alloy cruise missile nuclear submarine was built. Later, 7 "Alfa" class titanium alloy submarines, 1 "Mac" class submarine, and 4 "Sierra" class submarines were built. These nuclear submarines are all attack-type, among which the "Alfa"-class titanium alloy submarine uses 3,000 tons of titanium alloy. The "Typhoon" class nuclear submarine manufactured by Russia is the largest submarine in terms of volume and tonnage in the world, and its titanium content reaches 9,000 tons. Currently, Russia's latest generation of "Borey" class nuclear submarines also use titanium alloy pressure-resistant shells.

No.2

Power propulsion device

Due to the influence of sea water and marine climate, ship propeller materials need to have high corrosion fatigue strength and cavitation corrosion resistance. Compared with copper alloys and steels, titanium alloys have advantages in corrosion fatigue strength and cavitation corrosion resistance. In addition, due to the low density of titanium alloy, compared with other commonly used materials, when making propellers of the same scale, the mass of titanium alloy propellers is small. Therefore, ships using titanium alloy propellers have higher driving efficiency.

Russia, the United Kingdom, etc. began to try to use titanium alloy propellers on ships as early as the 1960s. For example, Russia uses titanium alloy propellers in its "Alfa" class and "Mike" class nuclear submarines. The United States has also used titanium alloy propellers on many ships

No.3

acoustic installation

Titanium alloy materials can also be used for acoustic devices on ships, such as sonar domes, underwater acoustic transducer components, microphones, telephone parts, etc. Sonar is the most effective equipment for ships to detect targets underwater. Compared with titanium alloy materials, stainless steel and fiber-reinforced fiberglass have relatively weak sound transmission and crash resistance properties. Russia has applied titanium alloy sonar domes to the "Kursk" nuclear submarine, the "Minsk" aircraft carrier, the "Kiev" aircraft carrier, etc., and the actual sonar detection results are good.

Titanium alloys have always been regarded as new materials of strategic significance. It is believed that in the near future, more titanium alloy materials with excellent properties will appear and achieve more successful applications in practice.