Titanium plate in the ship application
Titanium Corrosion Resistance, low density, high strength, resistance to seawater corrosion, machining, welding performance are good, and after welding does not require heat treatment, heat-affected zone embrittlement, as a marine material has broad prospects. Although the current use of very small, but there are already examples of titanium ships, and received a high rating
The earliest titanium boat was a primary attack submarine manufactured by the former Soviet Union in 1978-1983. It is considered that the pressure hull was made of titanium. Submarine water displacement of 2800t, underwater displacement of 3600t, diving depth of 600m. The earliest civilian titanium boat is competitive speedboat, released in may 1985, registered in foreign countries. The speedboat is 17m long, 4m wide, 2.5m high and weighs 2.8t. Except for FRP for cabins, everything from the frame to the hull is composed of titanium. Based on the necessary strength calculations, a 4mm-15mm thick titanium plate was used on the bottom of the ship, pure titanium plate 2.5mm in thickness on the deck, stairs, a steering wheel and a rudder shaft were also made of titanium rods.
Titanium boat advantages:
Light hull Due to the high tensile strength and high specific strength of titanium, we is able reduce the quality of the ship. For example, according to design requirements, if it is a pure aluminum ship floor, the thickness must be 5mm, and Ti 2.5mm is enough, the same size boat, titanium hull quality is 30% of FRP, lighter than aluminum alloy 10 %. As the titanium bolt surface does not require spraying anti-rust coating, it also eliminates the need for coating quality.
2 speed increases. Due to the lightness of the ship, the onboard engine may be miniaturized. The same shape of the boat, Titanium boat engines than aluminum alloy ship engines to be 15% smaller. If you use the same engine, the speed can be enhanced by 15%. In addition, the coating on the surface of the ship is not part of direct contact with the water, but also reduces the coefficient of friction with water, thereby increasing the speed of the ship.
3. Reduced fuel costs and CO2 generation. Titanium ship's light weight and high speed make the unit mass. Unit sailing distance fuel costs dropped significantly. This is not just a reduction in the cost of sailing, but it also decreases CO2 production.
4. Corrosion resistance. Titanium corrosion in sea water. So do not have to spray anti-corrosion coatings. When the boat is stationary, shellfish and seagrass grow very fast, but do not corrode titanium metal, and the surface is also smooth and very easy to peel off. Aquatic plants and shellfish attached to the boat's thrusters while the boat is stationary will rub off from the water as the thrusters rotate. Although titanium metal requires almost no anti-corrosion coatings, research on marine coatings for decoration and marking purpose should be developed.
5. Hulk recycling. The titanium boat with the equivalent aluminum boat, waste can be recycled, which will help environmental protection.
6. Excellent stability. Titanium boats rarely show vertical or horizontal rocking, even in bad weather. Investigations of titanium boats show that the ship is less inclined when the ship is sharply cruising; fueling either side of the rail is balanced tilt. This is caused by titanium ship light, low center of gravity. Titanium ships, high-speed, but also stable navigation.
7. Noise, vibration small. Titanium boat bottom 2.5mm titanium, 2.2mm titanium side of the boat, is very thin, do not have to worry about vibration. Noisy when idling, voyage from the impact of waves caused by the vibration is not large, this is the result of the survey of titanium boats.
8 long lives. Legal service life of wooden ships is 5 years. FRP ships are 7 years and steel and aluminum chips are 9 years. Ti metal seawater, water corrosion, can be said to be semi-permanent. Thickness design does not need to consider corrosion thinning.
Titanium Corrosion Resistance, low density, high strength, resistance to seawater corrosion, machining, welding performance are good, and after welding does not require heat treatment, heat-affected zone embrittlement, as a marine material has broad prospects. Although the current use of very small, but there are already examples of titanium ships, and received a high rating
The earliest titanium boat was a primary attack submarine manufactured by the former Soviet Union in 1978-1983. It is considered that the pressure hull was made of titanium. Submarine water displacement of 2800t, underwater displacement of 3600t, diving depth of 600m. The earliest civilian titanium boat is competitive speedboat, released in may 1985, registered in foreign countries. The speedboat is 17m long, 4m wide, 2.5m high and weighs 2.8t. Except for FRP for cabins, everything from the frame to the hull is composed of titanium. Based on the necessary strength calculations, a 4mm-15mm thick titanium plate was used on the bottom of the ship, pure titanium plate 2.5mm in thickness on the deck, stairs, a steering wheel and a rudder shaft were also made of titanium rods.
Titanium boat advantages:
Light hull Due to the high tensile strength and high specific strength of titanium, we is able reduce the quality of the ship. For example, according to design requirements, if it is a pure aluminum ship floor, the thickness must be 5mm, and Ti 2.5mm is enough, the same size boat, titanium hull quality is 30% of FRP, lighter than aluminum alloy 10 %. As the titanium bolt surface does not require spraying anti-rust coating, it also eliminates the need for coating quality.
2 speed increases. Due to the lightness of the ship, the onboard engine may be miniaturized. The same shape of the boat, Titanium boat engines than aluminum alloy ship engines to be 15% smaller. If you use the same engine, the speed can be enhanced by 15%. In addition, the coating on the surface of the ship is not part of direct contact with the water, but also reduces the coefficient of friction with water, thereby increasing the speed of the ship.
3. Reduced fuel costs and CO2 generation. Titanium ship's light weight and high speed make the unit mass. Unit sailing distance fuel costs dropped significantly. This is not just a reduction in the cost of sailing, but it also decreases CO2 production.
4. Corrosion resistance. Titanium corrosion in sea water. So do not have to spray anti-corrosion coatings. When the boat is stationary, shellfish and seagrass grow very fast, but do not corrode titanium metal, and the surface is also smooth and very easy to peel off. Aquatic plants and shellfish attached to the boat's thrusters while the boat is stationary will rub off from the water as the thrusters rotate. Although titanium metal requires almost no anti-corrosion coatings, research on marine coatings for decoration and marking purpose should be developed.
5. Hulk recycling. The titanium boat with the equivalent aluminum boat, waste can be recycled, which will help environmental protection.
6. Excellent stability. Titanium boats rarely show vertical or horizontal rocking, even in bad weather. Investigations of titanium boats show that the ship is less inclined when the ship is sharply cruising; fueling either side of the rail is balanced tilt. This is caused by titanium ship light, low center of gravity. Titanium ships, high-speed, but also stable navigation.
7. Noise, vibration small. Titanium boat bottom 2.5mm titanium, 2.2mm titanium side of the boat, is very thin, do not have to worry about vibration. Noisy when idling, voyage from the impact of waves caused by the vibration is not large, this is the result of the survey of titanium boats.
8 long lives. Legal service life of wooden ships is 5 years. FRP ships are 7 years and steel and aluminum chips are 9 years. Ti metal seawater, water corrosion, can be said to be semi-permanent. Thickness design does not need to consider corrosion thinning.
