reborn industrial empire

"So Mr. Wang, what do you hope that Huayang Dynamics can do?"

Jin Xiaoqiang asked Professor Wang, and Professor Wang directly expressed his thoughts without being polite.

"Early before I came to see you, Xiaoqian mentioned to me many times that your Huayang Power's finishing level is very high, ahead of the same industry level across the country. To be honest, I didn't really believe it before, because in our country

, you have to know that the best finishing company is our military industrial unit. But then I saw your hywl5

000 model machine tool, I have to say that it shocked me. From this machine tool, I can see that your finishing level is indeed not low. And Xiaoqian visited your finishing process production line. According to his description, you

The finishing capability is indeed not low, although I don’t know how you achieved those high-precision machine tools.”

When he said this, Professor Wang winked quietly at Jin Xiaoqiang, and Jin Xiaoqiang just smiled and passed it off. After all, everyone just knows some things well, and there is no need to put it on the table.

"And I heard that your special steel smelting capabilities are also very good. Xiaoqian also described it to me. We also purchased some of your special steel products and came back to conduct corresponding research. I have to say that the quality of your products is indeed good.

Many of them are close to the level of the world's top special steel products. They can indeed be said to be the best in the country. Even the products of many of our military industrial enterprises are not at the same level as your products."

Of course, Jin Xiaoqiang felt a little proud to be recognized by such a powerful person as Professor Wang, but he did not dare to get too carried away because he knew that Professor Wang's next words would definitely contain a "but"

'.

"But, Xiaojin, this is not a reason for you to be proud. You must know what I said, whether your machine tools or special steel are good, they are indeed good, but that means they are top-notch in the country. But if you get

Internationally, compared with truly top-level international products, there is still a certain gap.”

Sure enough, the next 'but' made Jin Xiaoqiang feel a little bit chilled. However, what Professor Wang said is indeed true. Although in the past few years, Jin Xiaoqiang has been spreading money around the world through various means.

They engage in various advanced technologies, but some technologies are really not something you can get by spending money.

For example, Americans use to make turbocharger blades for jet engines. The special alloys and special processing techniques used are really not something they can get by spending money, and even they can't get it by spending money.

He doesn't dare to develop such technology, because if he really spends money to develop such technology, he might be invited over for coffee by Americans.

Over the years, news has often spread in the United States that scientists have helped our Chinese government steal confidential scientific and technological information from the United States. Although some of it is complete slander and slander, a considerable part of it is not nonsense and is indeed true.

of cause and effect.

"Currently, the most critical core component for aero engines is the aviation turbine, and the key to this turbine lies in the blades of the turbine. For example, the tip of the blade has a soft structure, like a very thin piece of paper, which is attached

On the outer ring, it rubs against the outer ring when rotating, but the friction is very

Small, almost the same as nothing. What are the benefits of this? When the blade rotates, the air is squeezed and pressed back to the back of the blade, and the aerodynamic loss on the return is much smaller. However, the special materials required for this material are very small.

It’s difficult to make it, and even if it is made, the processing aspect is still a problem.”

A difficult point that Mr. Wang raised casually gave Jin Xiaoqiang a very headache.

"Many countries in the world believe that the manufacturing industry in the United States has declined. They are currently being caught up with or even surpassed by Germany and Japan in many fields. This view has a strong market in the world, and my country has the largest market. Many people are blindly immersed in the dream of our country's rapid development. In fact, they don't know that the gap between us and the United States in terms of overall industrial level, manufacturing capacity, and technological level can be as great as

It is said that instead of shrinking, it is getting bigger. Why do we say this? It is because of the mistakes made in our research and development direction. For so many years, we have been committed to manufacturing products with high energy consumption and poor quality, but in real terms

The investment in research and development projects is less than a fraction of others. For example, in the two most difficult problems of aero-engine manufacturing, the gap between us and others is still far away!"

Jin Xiaoqiang really agrees with what Professor Wang said. Recently, many Chinese people have been dazzled by the country's rapid economic growth and think that the gap between us and the United States is narrowing. In fact, what is the reality?

Our economic growth relies on selling resources and land, while other people's economic growth relies on selling creativity. Among the large-scale promotion technologies and products now born in the world, which one was produced and invented by our Chinese people?

of?

Not a single item!

"Don't think that Americans don't engage in national planning, and others do the same. Since the 1960s, the Americans have had the military and government lead more than a dozen aviation power research projects, all of which have achieved very good results.

.And starting in 1988, the United States and the government once again led a project aimed at research and

In order to develop a first-class aero engine and a civilian cash engine with a thrust-to-weight ratio of 10, the U.S. government, military and industry jointly launched a large-scale development plan for "high-performance turbine engine comprehensive technology", and the

The plan was a huge success, and in 2006 they implemented it again

The successor plan of the plan is the "Economically Affordable Universal Advanced Turbine Engine Plan". So far, the Americans have developed the seventh-generation core aeroengine, and the aeroengine on the F22 they are using now is this.

It is only the fourth generation product out of seven generations. According to American thinking, it is

At least we have to be 30 years ahead of the world. When we develop products of the same level that can compete with F22, others can easily come up with next-generation products and technologies and suppress you again. So young man, our

There is still a long way to go, and the future depends on you. It can be said that your future has a long way to go!"

Jin Xiaoqiang had heard this argument that Americans were thirty years ahead of the world before, but he didn't quite believe it. Professor Wang also saw Jin Xiaoqiang's attitude, so he seriously asked Jin Xiaoqiang again

said.

"Xiao Jin, don't believe it. Let me tell you this! Germany's industrial manufacturing level is great, right?"

Jin Xiaoqiang nodded. Indeed, many people now believe that the Germans' industrial finishing capabilities are currently the best in the world and have completely surpassed the United States. Even Japan seems to be stronger than the Americans in this regard.

However, Japan, as a defeated country in World War II, would not be allowed by the Americans to research jet aircraft, so Professor Wang did not mention Japan. Jin Xiaoqiang could understand.

"The Germans and the French, as well as some other European countries that are already famous for precision manufacturing, jointly developed fighter jets. They relied on France and Germany, the two most powerful joint industrial entities, to complete the fighter engines.

Their engine also claims to have a thrust-to-weight ratio of 10, but their turbofan engine is still not on the same level as the American F119-PW-100. The F119-PW-100 is the most advanced one currently produced by the United States.

The engine uses a layout of three-stage fan + six-stage compressor + single-stage high-pressure turbine + single-stage low-pressure turbine, while Germany and France use the layout of ej200 and French m88 compressor. Compared with American engines

There are completely one more stage, and the compressor blades are more than those of the Americans. However, their engines are still inferior to the Americans in terms of durability and stability, so their fighters can only be regarded as third-and-a-half-generation fighters.

, it’s not considered a fourth-generation machine at all.”

Professor Wang's words made Jin Xiaoqiang break into a cold sweat. These countries in Western Europe can be said to be close relatives of the United States, and they claim that their technological levels are quite close, but it seems that this is not the case at the moment!

"Let's not talk about catching up with American technology right now. Even the Russian technology cannot be compared with us. For example, the turbine blades required for this aircraft engine must be impact-resistant, high-temperature resistant, and capable of operating at temperatures up to 1,000 km.

Working in a high temperature environment above 10 degrees, maintaining no deformation, and being able to reach a maximum speed of more than 20,000 revolutions per minute, such turbine blades are a big problem for us."

Professor Wang seemed very sad when he talked about such turbine blades, but Jin Xiaoqiang was a little secretly happy after hearing this. In fact, Huayang Power now has a variable-section turbine technology. The blades used in it are actually

It was transformed from the turbine blades on this aircraft engine.

At that time, Jin Xiaoqiang also knew the formula of the metal materials needed for this kind of blade based on his own golden fingers. After many smelting experiments, he came up with this kind of blade.

However, unlike the grade of blades required by aerospace engines, the high temperature that this kind of blades need to withstand is only seven or eight hundred degrees. It does not need to work at ultra-high temperatures of more than one thousand degrees like aircraft engines, so that kind of blades need to withstand

It's not difficult to get up.

But if you want to make engine turbine blades like what Professor Wang said, you probably can do it.

"In fact, in the final analysis, we have two very significant gaps with the Americans in the manufacturing of aero engines. These two points are also problems that have been troubling us. The first is the issue of processing accuracy. This processing accuracy is not yours.

The machining accuracy of a workpiece is the machining accuracy of your entire industrial system. Only when each component is as precise as possible and then assembled together can it achieve

To achieve the best effect. For example, the compressor pressure ratio should be high. The pressure ratio of compressors in the United States is very high. What is mentioned here is the actual pressure ratio, not the design value. In order to allow as much air to be supercharged as possible

, the compressor cannot leak. The compressor blades are very close to the compressor casing, so close that they almost touch. Therefore, the air compression efficiency is very high. But the blades and the casing are so close,

The motor vibrates at 20,000 rpm, and it is very difficult to ensure that the blades do not rub against the compressor casing. Therefore, our compressor blades must be farther away from the compressor casing. In this way, the compressor will leak.

The boost ratio is lower. This not only involves the design and manufacturing of the compressor, but also has something to do with the accuracy of all engine segments. Each segment of the engine is welded with stainless steel high-temperature alloy sheets.

There will be deformation in itself. How do you ensure the accuracy after processing these deformed receivers? It is a big problem. You may say that I use the most precise CNC machine tool for processing, and the accuracy of the machine tool itself is no more than one ten thousandth of a millimeter.

.It’s useless. These receivers are soft, and when the tool touches it, it will move backwards, and after your tool cuts it, it will bounce back. No matter how precise the machine tool is if you don’t master the processing method, there is nothing you can do.”

When Professor Wang said this, Jin Xiaoqiang felt that he understood a little bit. He used to think that what he was doing was high-tech, but now he saw that he was still far from the real high-tech.

"The second difficulty is the single-crystal casting of turbine blades. This is actually a technology from the 1960s, half a century ago. But our country has not mastered it yet. The most severe component in the entire engine's working environment is the turbine.

Blades. It must operate at a temperature of more than a thousand degrees and withstand huge loads and severe vibrations every time.

It operates at 20,000 revolutions per minute. The temperature in front of the turbine has approached its melting point, but there must be no problem with its strength and rigidity. Creep deformation is absolutely not allowed. This requires internal cooling, which requires opening holes inside the blades.

Inject cooling air. We can do this. But it is not enough. In order to further increase the engine power,

The temperature in front of the turbine has reached the creep zone of the high-temperature alloy material. The service temperature of the material has exceeded its creep limit. At this time, it is necessary to try to reduce the number of grain boundaries in the blade casting process to resist creep. This precise laser positioning

The punching system is the key, and we simply cannot do it. At present, many airlines

Qiangguo is already developing single-crystal blades with a higher level of cooling, and the cooling effect is expected to reach 400 to 500 degrees Celsius. This higher level of blades means that it combines advanced materials, advanced molding processes, and advanced

It integrates advanced cooling technology and advanced coating. So we still have a long way to go!”

Professor Wang has finally finished teaching, and Jin Xiaoqiang has gained some knowledge. Before, he only knew that our aero-engine manufacturing level was poor and there was a gap compared with other foreign products, but where was the real gap? As a layman, he

To be honest, he really couldn't explain it.

After listening to Mr. Wang's explanation today, he finally understood. It turns out that this is the gap between us and others! (To be continued)

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