Recently, some media have taken a group of pictures of Liaoning ships sailing home. It can be seen from the photos that rust has begun to grow near the waterline of Liaoning ship, and rust is also spotted near the fixed anchor, which is worrying. As an aircraft carrier that has been in service for only seven years, it has rusted now. Does that mean that there is a problem with the quality of steel used for ships?
In fact, this is not the case. It is understood that many countries in the world ship steel is like this, in order to balance the yield, corrosion resistance and other properties, put into production and construction, a layer of anti rust film will be laid on the surface. However, the service life of antirust film is too short, and aircraft carriers often go to sea for a few weeks, months or even nearly a year, so rust is common.
In addition to the Liaoning ship, Nimitz class aircraft carrier, chuyun class helicopter aircraft carrier and Kuznetsov aircraft carrier all have such problems. What can be done is to remove rust in the maintenance work after returning. According to the different tonnage displacement, the price is not the same.
The displacement of Nimitz class aircraft carrier ranges from 90000 to 100000 tons, and the cost of rust removal is 212 million US dollars, while that of Liaoning ship is 113 million US dollars. Of course, it is necessary to note that in addition to removing the "flow rust", the rust removal work itself will also maintain the aircraft carrier materials to increase their service life.
Among them, the reverse teaching material is the Kuznetsov aircraft carrier. Due to the lack of funds, few maintenance, poor quality of the crew, and the ignorance of daily operation, its state is really worrying.
