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Depending on the application, the steel is subdivided into thousands of special steels.
For example, the armor steel used in tanks, the rail steel used in high-speed rail, the steel used in high-speed rail wheels, and even the kind of ballpoint pen tip steel that China couldn't make ballpoint pen nibs that were hyped on the Internet some time ago.
The United States, the Soviet Union, China, the United Kingdom, France, and Japan all have their own steel standards. Attention, this is the P5 + Japan.
Germany and South Korea also have their own characteristics.
The most awesome thing in the Soviet Union is the Komsomol nuclear submarine, the entire nuclear submarine shell is made of titanium alloy, a combat submarine, can dive 1200 meters... No other country can torpedoes go so deep... Invincible work.,It's a pity that I sank.。。。
China did not have its own aircraft carrier steel before. Later, it was developed and a production line was opened in the northeast, specializing in the production of steel plates for rolling aircraft carriers.
In any case, special steel is like making a cake. First of all, steel is a mixture of iron and carbon. Then, different other elements are added to form different alloys to achieve different mechanical indicators to adapt to different application environments.
The most basic thing to make a cake is flour and water, and Zhangjia Cake Shop adds salt to make salty cakes. The Li family cake shop makes sweet cakes and adds extra sugar. The same is true for the development of special steels.
The United States has money, and special steel is added with nickel, strontium, manganese, copper, tungsten, titanium, etc., the Soviet Union has resources, nickel, cobalt, titanium, etc., China has rare earths, and rare earth steel has been developed. It is enough to achieve the required mechanical properties, and the formula has its own tricks.
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Good toughness, non-magnetic, seawater corrosion resistance, performance and the United States.
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<> "How good was the steel used in the Soviet Union to build aircraft carriers.
Aircraft carriers are a powerful military force at sea, but there are not many countries with aircraft carriers, mainly for two reasons, the first is that the construction of aircraft carriers requires a lot of funds, if the country's economic strength is weak, the construction of aircraft carriers is very unrealistic, and there is that the manufacture of aircraft carriers requires a lot of technology.
The technology for developing aircraft carriers comes from the monopoly class, and only a small number of powerful countries have the high-tech technology to build aircraft carriers. If neither of these two is sufficient, then the construction of aircraft carriers is basically hopeless.
The world's first "pure-blooded" aircraft carrier was actually built by the United Kingdom, and it was named "Athletic" in honor of the originator of the aircraft carrier, that is, the world's first seaplane carrier "Athletic".
With the continuous development of aircraft carriers, the level of construction of aircraft carriers is getting higher and higher. The classification of aircraft carriers has also become more refined, and the capabilities of air cover and long-range strikes have also been greatly improved. Especially after the end of World War II, in order to safeguard their own interests, all countries in the world began to independently study aircraft carrier construction technology, and the development of aircraft carriers entered a new stage of chaos.
Aircraft carriers can be divided into nuclear-powered aircraft carriers and conventional aircraft carriers according to power, and the country with the most nuclear-powered aircraft carriers is known to have the United States, and only the United States and the French Navy have nuclear-powered aircraft carriers.
Most of the aircraft carriers of other countries are conventionally powered aircraft carriers, for example, China's two aircraft carriers are conventional aircraft carriers. The process of building an aircraft carrier in China was very difficult, because we did not have the technology at the beginning, so we could only buy the Wagryan from Ukraine that had not yet completed the construction project and return to China for research, but the Wagryan encountered Turkish obstruction on the way home, so that it drifted at sea for several years before returning to China.
When the Waglian was transported to China, because of the long-term corrosion of the Daling sea, the appearance was already rusty, I thought that the transformation of this aircraft carrier would be very difficult, but what I didn't expect was that the steel used in the Waglian was very good.
The captain in charge of the work of the Liaoning said that when he used gloves to wipe the rust on the steel plate of the Waglian, he found that the steel plate was very shiny, as if it was brand new, which was a little surprising.
Aircraft carriers often have to travel at sea, and the steel used in the construction of aircraft carriers must have corrosion resistance, so aircraft carriers are usually built with special aircraft carrier steel. In addition to corrosion resistance, aircraft carrier steel should also have the function of low temperature resistance and magnetic repellency, and there are not many countries that can master this technology.
If the aircraft carrier steel is magnetic, it will be detected by magnetic mines and detectors, and the Waglian has a very good magnetic rejection effect.
When the magnetic force was tested, it showed that the magnetic force was almost non-existent, which shows how powerful the production of this aircraft carrier steel is.
However, China does not have the technology to produce this kind of aircraft carrier steel, so the transformation of aircraft carriers is very slow. However, through the efforts of our researchers, this difficult manufacturing technology of aircraft carrier steel was finally overcome, and the construction process of the aircraft carrier was smoother.
It depends on your criteria. Just like configuring a computer, the good ones are a little more expensive, and the ordinary ones are cheaper. The same goes for an aircraft carrier, in fact, its shell is not expensive, but it is the various electronic systems, sensors, etc. on its ship. >>>More
How many countries in the world are building aircraft carriers? What is China's ranking? How many countries in the world are building aircraft carriers? What is China's ranking? How many countries in the world are building aircraft carriers? What is China's ranking?
According to the composition of one general aircraft carrier for maintenance, one for training, and one for combat duty, and in addition to the fact that China has two main directions, the East China Sea and the South China Sea, China needs about six aircraft carriers to achieve a relatively ideal situation of having one aircraft carrier in each direction at any one time. So China needs to build at least 5 more aircraft carriers, according to current information. China should already have an aircraft carrier under construction (Jiangnan Shipyard), which should be of conventional power, about 80,000 tons, and maintain the state that can be equipped with catapults.
I haven't seen the exact report, but I personally think it's unlikely, building an aircraft carrier is a project that costs a lot of money and resources, and the only country that can build several aircraft carriers at the same time in a few years is the United States during the Cold War. If you think about it, the cost of an aircraft carrier is between 4 billion and 5 billion US dollars, and it costs 20 billion US dollars to build 4 aircraft carriers, which refers only to the cost of medium-sized aircraft carriers, without considering the current state of China's technology (some aircraft carrier technologies are not yet mature). What's more, if four aircraft carriers have already been built, these four aircraft carriers will inevitably be launched continuously, how can China have enough carrier-based aircraft to load ships at that time? >>>More
Talent and technology are big problems, and I'm sure that without the help of other countries (Russia), we would not be able to complete the construction of aircraft carriers on our own. >>>More