Yota Watanbe is gone.

He came proudly, but with full of unwillingness and deep fear, he left Huaxia.

On the plane, Dufuyang couldn't be calm for too long.

"If it weren't for the mobile phone business of the giant beast industry and the thunder automobile business that was too profitable, I think the most cutting-edge industrial processing technology of our entire country would be beaten by the giant beast industry alone, and there would be no way to fight back. Watanabe covered his lips, and his words trembled a little.

The scene that happened in the living room of the guest house not long ago made Toyo Tai completely realize that the giant beast industry is incomparably powerful.

Fortunately, Behemoth Industries is only a company, not a country, and can take care of all industries in all aspects. If they plunge headlong into the industrial processing robot and machine tool market and don't come out, then Watanabe Yangtai feels that he should resign early and come to the giant beast industry to eat.

"Teacher, I don't understand. The expert said that they stacked seven special single crystal alloys together, how did they do it? Different metals have different properties and melting points, and theoretically cannot be superimposed together. ”

Watanabe Yang glanced at this disciple who didn't understand and asked, and his eyes were full of bitterness.

You ask me, who do I ask?

Thinking like this in his heart, Watanabe Yangtai said vaguely: "Maybe they have mastered a very special sintering technology, and the detection robot used inside the nuclear reactor does not need too high a level of physical protection, and the strength of the shell is not important, as long as it can solve the impact of nuclear radiation." ”

"It's terrifying, they claim that the shell protection ability is equal to 110 atomic numbers. I am afraid that only the United States in ten years will be able to do such data. ”

"I remember...... Giant Beast Industry has been established for less than two years, right?" Watanabe Yang sighed, "It's a pity that everything is late, if you could have known that Giant Beast Industry has mastered this kind of technology......

"Teacher ......"

Another disciple interjected with some hesitation, "Actually, we had a deal with the Behemoth Industry last year. At that time, they were still called Behemoth Heavy Industries. ”

"We?" Watanabe Yota immediately turned his head, "What do we mean?"

"It's our day of science and technology. Another disciple who is a professor of mechanical engineering at the Japanese Institute of Technology sighed heavily, "Last year, our Japanese Institute of Technology held an academic exchange with Huaxia Zhongyun University. ”

"We originally wanted to win Huaxia and use an ultra-high-precision bolt to stump Zhongyun University, and the final result was similar to today. ”

"Zhongyun University urgently invited the young president of Giant Beast Industry to be a foreign aid, he used to be a student of Zhongyun University, saying that he was studying for graduate school. Then, in just two days, the young president grabbed a handful of nuts. You know, even we weren't too sure that a nut would come out, and he actually grabbed one. ”

Later, they gave us an iron ruler and asked us to engrave words on it. ”

Watanabe Yota was shocked and said, "Last year, I was doing technical research on Fukushima, why haven't I heard you talk about it?"

"Is that inscribed?"

This disciple twisted and pinched for a long time, and finally held back a no.

"It was so embarrassing last year, I... Where are we going to spread the word everywhere?" he pulled out his phone from his pocket and turned a picture out. Watanabe looked intently at the picture, which contained a blackened iron ruler on the back, which attracted all his attention.

Watanabe Yang knew that the front of the iron ruler was engraved with the word "Friendship for a long time", and the young president asked them to engrave "The Teacher of the Hundred Ages". Of course, these four words cannot be engraved, and being engraved is equivalent to admitting that Huaxia is their teacher. But the Japanese Institute of Technology also has to engrave to prove that it is good, whatever four words, otherwise the skills are not as good as people, what is not a student?

As a result, Yota Watanabe saw that there were a few crooked nicks on the iron ruler. The nicks were laser-burned, electrically sparked, and plasma-cut, as well as two other marks that he couldn't see for the time being.

But these nicks are not words at all, nor are they made by the same equipment.

It seems that the Japanese University of Science and Technology has tried almost all methods, but has not succeeded in finding a way to carve words.

Yota Watanabe gasped again.

……

At the same time, Ye Qing also got the much-needed core and cooling water information.

Academician Liu himself is a top expert in nuclear reactors in China, and he is very familiar with the knowledge of nuclear energy theory.

He told Ye Qing that the technical principle of aircraft carrier reactors and commercial power station reactors is the same, but in actual use, the core parameters will be very different. The biggest difference is in the concentration of uranium-235 in the core.

In ordinary commercial nuclear power plants, the purity of uranium-235 in the core is only 3% to 6%, and the fuel needs to be changed once a year.

However, the core used by the US aircraft carrier is weapons-grade uranium disassembled directly from decommissioned nuclear warheads, with a uranium-235 concentration of more than 95%, which can work continuously for 30 years and is more powerful.

Academician Liu told Ye Qing that if China builds a nuclear-powered aircraft carrier, the concentration of uranium-235 in the core will be 60 to 80 percent at most. Because the higher the uranium-235 concentration is purified, the higher the capital cost will be.

The United States manufactured a large number of nuclear warheads during the Cold War, and after these nuclear warheads were decommissioned, the Navy simply took back the nuclear-powered fuel cores used as warships. Without this historical accumulation, China will naturally not be able to imitate the wealthy United States. Academician Liu also told Ye Qing that after the Cold War, the United States had mothballed about several thousand tons of weapons-grade uranium, which was enough to last those warships for more than 1,000 years.

Using weapons-grade uranium as a core is a very luxurious and very advanced technology.

Fortunately, the core theory of weapons-grade uranium is not complicated, it is only difficult in terms of industrial manufacturing capacity.

Last question, when Ye Qing and Academician Liu were having dinner in the guest house at noon, they chatted and asked why the US aircraft carrier reactors were equipped with ordinary steam turbine units, not supercritical, or even ultra-supercritical.

The latter laughed and said that it had something to do with the core manufacturing technology.

Even the United States, which is the most powerful in the world, is not sure to manufacture qualified core materials.

For example, a fuel cell in the reactor core of a warship is only one centimeter long and one centimeter wide, but the energy it can release is equivalent to hundreds of tons of coal. Countless fuel pellets, loaded in fuel rods. When fissioning is carried out, the internal temperature of the fuel rods is usually maintained at 700 to 800 degrees. However, the fuel rod is in direct contact with the cooling water of the primary circuit, and the cooling water is heated to 300 degrees. Fuel rods made of special alloys will work in an underwater environment with different internal and external temperatures for a long time.

The internal and external temperatures are different, and they have to be affected by high temperatures for a long time, and the material properties of the metal will be greatly tested. The fire at the Fukushima power station was caused by the failure of the primary cooling system, which caused the cooling water level to drop and could not cover the entire fuel rod, exposing the upper half of the fuel rod to the air, and then the fuel rod broke.

The broken fuel rod is directly the most serious nuclear accident of magnitude 7, and the consequences refer to Fukushima.

If you want to play supercritical, the internal temperature of the fuel rods will be as high as 1000 degrees, and the cooling water of the primary circuit will also change substantially.

Ultra-supercritical, it is 1200 degrees, and the cooling water of the primary circuit is heated to 600 degrees. At that time, water is steam, and steam is water, and the pressure is more than 30 megapascals. Ordinary steel can turn into a pile of discus in less than ten seconds in this environment.

But an aircraft carrier reactor has a design life of up to 30 years, during which time the fuel rods have been enclosed in the ship.

What kind of fuel rods, what kind of pressure-resistant shells, can last for thirty years?

Not even the United States can do it.

After speaking, at the dinner table, Academician Liu and Zhou Yangwen suddenly looked at Ye Qing with a very strange and fiery look.

Americans can't do it......

It seems that the giant beast industry can give it a try, and it seems that if China builds a nuclear-powered aircraft carrier in the future, the pressure-resistant shells and fuel rods will most likely have to ask the giant beast industry for help.

……

Late that night, Ye Qing returned to the Longxitan factory.

After the discussion, the monsters decided to launch the ultra-supercritical unit.

Academician Liu's information has completely improved the model of electrocrystalline design. If the theory is fine, the actual industrial processing is also fine.

Behemoth industry, one is at the forefront of processing capacity higher than technical theory.