"Yes, Mr. Li, what you said is so right, come, let's do one first, let me express my respect for you. Mr. Li, let me say something, don't mind, you are so young, but you can see so long-term, this is definitely a blessing for our industry. ”

After speaking, without waiting for Li Yifan's reaction, this Yao Chongshan directly picked up a full cup of Phoenix Laojiao in front of him, and dried it directly.

He is engaged in the foundry industry, so it can be said that he is very clear about the area of special metal casting processing in China.

"Speaking of the casting and forging parts of this special alloy, the largest amount of use in China is probably those nuclear power plants in China, as well as thermal power plants. In the past two years, I have traveled with my mentor to the north and south, but I have been to many such companies. The main project involved is the research and development of a new generation of boilers for these enterprises. Now the world's top nuclear power companies and thermal power companies are using something called supercritical boiler, this kind of boiler, Mr. Li, have you heard of it? ”

Yao Chongshan said while asking Li Yifan, Li Yifan nodded, how could he not have heard of this kind of thing, when he wanted to engage in the special metal smelting industry, the eldest brother-in-law mentioned this kind of boiler, and said that the plates and pipes in it are very interesting.

"My teacher and I have inspected two nuclear power plants in China, and almost all of the supercritical boilers used in these two nuclear power plants are imported from abroad. After we understood, we estimated that the reactor pressure vessel, steam generator, and voltage regulator shell, plate tube and main pipe of the nuclear island part of a set of million kilowatt reactor nuclear power plants all require a large number of cast alloy components. And according to our estimates, it is these cast alloy parts alone. Each unit counts down. It will take about 500 million yuan. And a small nuclear power plant. An average of five such nuclear power units are needed, that is, two and a half billion dollars are needed just for this metal casting and forging, how big of a market is this? And in this regard, our country does not have decent finished products and technologies at all, and it is all dependent on imports. Almost all of the most basic castings, such as special steel plates and pipes, are imported from Japan, and the amount of money spent on these metal fittings alone is as high as 100 million yuan every year. And the reason why we can't produce such high-specification plates and pipes is because we are not up to the standard in casting technology. ”

Speaking of this, Yao Chongshan paused for a moment, thinking of our domestic iron and steel enterprises, in these technologies. He was a little excited.

"Actually, we have learned that this is suitable for the metal plates required by nuclear power plants. And metal pipes, the special alloy used, there is nothing special in the material, in fact, we are mainly weak in the later heat treatment process. And these heat treatments, in fact, are not too difficult, as long as we increase the investment in equipment, and the improvement of the process, only need to test a few more times, we can do it, but the current domestic iron and steel enterprises, hehe......"

In the understanding of domestic iron and steel enterprises, Yao Chongshan can only be described by two words for those enterprises to invest in scientific and technological research and development.

Big bosses would rather give themselves a new car, rather than increase investment in that kind of scientific research, anyway, the enterprise is the state, as long as they make money is their political achievement, now the market demand is so strong, only need to produce the lowest scientific and technological content of ordinary steel profiles, you can make a lot of money, why spend a lot of money to invest, to engage in high-tech research and development?

Waste of time is not counted, what if the scientific research does not produce results, and in the end the scientific research fails? After so much investment before, it failed, who will bear the consequences?

It is precisely because of this mentality that none of the leaders of the large state-owned iron and steel enterprises in China are willing to spend money on scientific research.

"The backwardness of this material, let's not talk about it for the time being, let's talk about the later processing. The process and process of our production are not a star and a half backward than others, and the plate is relatively simple, not to mention for the time being, just say that the pipe. The unit of this kind of nuclear power plant needs pipes, not only straight pipes, but also various pipes with curvatures, as well as pipes with bends of up to 90 degrees. And these pipes, the Japanese generally use forging technology, using a large hydraulic press, to bend the manufactured pipes, but also to ensure the accuracy, not in the process of pressing, so that the inner wall of the pipe is lost, but also to ensure that the bending pipes do not crack, but also to ensure the stability, life, working intensity and so on of this special pipe. These are reflected in the later processing technology and process. In this regard, we are farther away than others, and now those domestic iron and steel companies are making crazy money, and they are doing the most ordinary, the most untechnical things, and no one is willing to delve into this aspect of things. Even if you want to research a process that is comparable to others, you are spending money to renovate the production line or something, which is a big investment. Originally, I thought that if we want to catch up with the Japanese or the Germans in this regard, according to the current situation, it can be said that there is no play, but after I learned about the new technology of 3D printing, I felt that maybe we don't need to be so pessimistic, we can find another way? ”

Yao Chongshan's words made Li Yifan feel that when he wanted to win this Bincheng special metal smelting company, his eldest brother-in-law said that this special metal casting and processing industry was very interesting, and he mentioned the bull B of the supercritical boiler at that time.

At that time, Li Guangli said that the tubes and plates needed to make this kind of boiler need to be imported.

A piece of A4 paper-sized plate, people in Japan dare to ask you for the price of an Audi car, a ten-meter-long pipe, people dare to ask you for millions.

At that time, Li Yifan was confused, he only knew what it was, he didn't know why, he just knew that if he wanted to make this kind of boiler, the plates and pipes were very valuable, but why they were valuable, but he didn't understand, now after listening to what Yao Chongshan said, he understood that people sold expensively, and there was a reason for it.

"At that time, I thought, if we don't follow their old path, but use the new process of 3D printing technology, then we will save the trouble of studying other people's post-processing processes, so that we can save a lot of costs, and the use of this technology, it is a one-time molding, not to be as cumbersome as them, which not only saves material costs, but also saves a lot of time costs. For example, we use 3D printing technology to print out the model of large castings, and then use molten iron in the furnace to cast and mold at one time, which can not only save the cumbersome process steps later, but also a lot of material costs. The most important thing is that this 3D printing technology, the accuracy of the model that can be manufactured is still very high, according to the first international standards, the accuracy can be controlled within 0.1 mm, so that the accuracy can be controlled, so why don't we develop such a technology? ”

After listening to this guy's words, Li Yifan understood that in the original world, ten years later, why did this guy come up with a 3D printer known as the world's largest, and his feelings were not untargeted.

And at that time, the world's largest 3D printer that this guy made was specially prepared for the model of metal casting, and the coated sand metal casting model that his printer could produce was a must in the 3D printing industry, and it played a major role in the casting of large metal parts.

"Well, that's a good idea."

"Haha, good enough? I have to say that your kid's vision is accurate enough? Brother Xiao Li, in the past two years, my teacher and I have run a lot of large-scale domestic nuclear power, hydropower, and thermal power enterprises, and now these companies are all focused on studying supercritical boilers. In recent years, the country has also made long-term plans for the future of China's power industry, such as the nuclear power industry, according to the national long-term plan in which my teacher and I participated, the country has made it clear that in 2020, our domestic nuclear power engine assembly capacity will exceed 70 million yuan, and the equipment localization ratio will exceed 70%. In the next ten years, hydropower will require more than 200 new large-scale units with a single capacity of more than 500,000 kilowatts, while thermal power, in 2020, will hit the total capacity of the country, requiring more than 900GW! What is this concept, do you know it? ”

Yao Chongshan can be regarded as energetic, at this time, he has completely lost the image of a scholar, but an image of a blushing face and a thick neck.

Regarding the facts expounded by Yao Chongshan, Li Yifan was dizzy and confused, and he could only shake his head to express his puzzlement.

"So you say? Even if nuclear power is a small power station, based on the calculation of five units per power station, the demand for metal castings alone is more than 2.5 billion. And hydropower, forging and casting parts of each large unit, each forging needs 250 tons, castings need 150 tons, China needs 8,000 tons of large-scale forgings and castings on hydropower units every year, and the use of traditional means to produce large-scale forgings and castings, according to China's production level, the yield is about 55 percent, if we use 3D printing technology, you look at this market? Not to mention thermoelectric, each forging of a large unit is 230 tons, and the casting needs 250 tons, so Brother Xiao Li, how big is the market? ”

Yao Chongshan's words completely stunned Li Yifan...... (To be continued......)