Rule department scholar

The maximum temperature that the turbine blades can withstand is an important indicator of turbine engine technology.

Ordinary turbine engine blades also need to withstand a high temperature of more than 950 degrees, and most turbine blades are made of nickel-iron alloy. Depending on the alloy formula, the melting point of nickel-iron alloy will fluctuate to a certain extent, and the fluctuation is about [-] degrees Celsius.

Aero turbine engines have higher requirements, and the higher the temperature that the turbine blades can withstand, the better, and the temperature that the turbine blades can withstand is directly related to the maximum thrust that the engine can generate.

For example, the F22 engine of the M country's F119 fighter jet has a temperature in front of the turbine of about 1700 degrees Celsius, and the thrust of the engine is as high as 15.6 tons.

The temperature before the vortex of the AL31F engine in country E is 1400 degrees Celsius, and the thrust is 12.5 tons.

The 99M1 engine assembled by domestic high-end fighters, which is the second batch of imported AL31F series engines, has a temperature of 1420 degrees Celsius before the vortex and a maximum thrust of 13.5 tons.

According to the international empirical formula, under the premise of the same design level of the engine turbine and fan, the maximum thrust can be increased by 100% for every 15.00 degrees Celsius increase in the temperature before the turbine.

The original K03A can withstand up to 1250 degrees Celsius, and the melting point has been increased by 1350 degrees Celsius, and it has reached [-] degrees Celsius.

This value cannot be said to catch up with the international advanced level, at least not far from imported high-end turbo engines.

He Guilin and the entire R&D team were very excited after confirming the data. They talked excitedly, "It's a direct increase of [-] degrees! It's about to catch up with the high-end engine blades!"

"It's almost the same!"

"I didn't expect that such a good effect can be achieved by changing a process in the middle. K03A has not made progress for more than ten years, and now it is a big step forward! With this data, it is estimated that the Kunlun and Wangwu engine projects will not need blades. Alright, let's make it directly!"

"By the way, write a report, write a report!"

"Do you want to make it public?"

"Of course, this is a major achievement and must be made public, but I'll ask the leader first..."

There is nothing to keep secret about the progress of K03A, because it does not really catch up with the international level, or it is not as good as imported high-end engine blade materials.

The R&D team of 307 Steel Plant is excited that K03A has made such a big progress all of a sudden, and it is estimated that it can meet the needs of domestic engines. It is not only a matter of patriotism, but also the pressure from the superiors.

The K03A's performance has always been a problem, and there has been no improvement.

The Metal Research Institute of the Academy of Sciences and the Capital Aeronautical Materials Research Institute are both developing the latest single-crystal nickel alloys, and they are constantly producing results, such as DD5 and DD6, the melting point of which has exceeded 1100 degrees Celsius, and the strength of the material is also very good. Continue to develop Going on, it seems that it will soon replace K03A.

In this way, it feels that the R&D team has no meaning of existence.

Although they did not have relevant results, everyone was still suffocating.

Now that the performance of K03A has been improved, and the melting point has been improved by leaps and bounds as high as 03 degrees Celsius, they immediately feel very relaxed, because in a short period of time, they will no longer have pressure, and they don't have to worry about 'outside research results' Will replace K[-]A.

All the staff of the R&D team of the steel plant returned to the office. He Guilin explained some reports, and then immediately held an internal meeting, talking about Zhao Yi’s follow-up submission of K03A manufacturing process improvement suggestions, “From now on, everyone is busy. Get up, and I will assign the task."

"We need to verify the improvement issues proposed by Academician Zhao as soon as possible. Each item must be verified, and all of them must be verified together."

"This is the most important job right now!"

"do you understand!"

……

at the same time.

Institute of Metal Research, Academy of Sciences.

The team led by Academician Peng Engui also discussed the latest achievements of turbine blades. They developed a high-strength hot-corrosion-resistant nickel-based single-crystal superalloy, which not only has excellent hot-corrosion resistance, but also has high-temperature mechanical properties, good organization stability.

The team published the results in the domestic "Material Alloy" magazine. Peng Engui accepted an exclusive interview with an academic reporter, and several researchers and Peng Engui's students were sitting beside him.

Peng Engui sat in the middle and introduced the nickel-based single crystal superalloy, "This new nickel-based alloy material has a melting point of about 1150 degrees Celsius, which is 5 degrees higher than DD5. It has very good corrosion resistance and strength. Similar to DD[-], it can be used for high-temperature components of ground and naval gas turbines, and can also be used for high-temperature components of aerospace and aero engines."

The reporter asked, "As far as I know, the ultimate goal of the research and development of single crystal nickel alloys is aviation turbine blades. Is the new alloy material used for aviation turbine blades?"

Peng Engui thought for a while and used a word, "Infinitely close!"

He explained, "Now, for example, the Kunlun engine uses K03A nickel-iron alloy, which was a technology more than ten years ago, and there is no potential for further research and development."

"The strength of K03A is not bad, and it can withstand high temperatures of up to 1250 degrees Celsius."

"As you said, the ultimate goal of our research on single crystal nickel alloys is to develop alloys that can withstand higher temperatures and have higher strength, that is, they can be used in aeroengine blades. Now the new nickel-based alloys can withstand 1150 degrees Celsius, only a hundred degrees Celsius."

"In terms of the performance of aero-engine turbine blade materials, there is still a huge gap of [-] degrees Celsius, but there is one thing to know..."

Peng Engui paused as he spoke, "The materials we developed have not added metal rhenium. Many sources show that the top engine turbine blades in countries M and E contain rhenium, and the melting point of rhenium metal exceeds [-] degrees." , can greatly improve the high temperature resistance.”

What Peng Engui said was very serious, and it felt as if it was true, but in fact, even the students next to him couldn't help lowering their heads, because what Peng Engui said was deceiving laymen, and insiders knew there was something wrong when they heard it, because In China, there is no technology on how to add metal rhenium to the alloy.

Add rhenium?

How to add it?

How much to add?

If these problems are not solved, it is purely rogue to say that adding it has a good effect.

The good news is that the reporter is a layman and doesn't understand at all, so naturally he won't demolish Peng Engui.

Peng Engui continued to seriously conclude, "Therefore, it is only a matter of time before the single crystal nickel alloy developed by our group can replace K03A."

At this time, a voice suddenly came from the side, "Academician Peng, Academician Peng! Pause for a while, pause for a while."

It was a young researcher who spoke.

Peng Engui frowned and looked over, "Xiao Li, what's the matter? It's an interview, just tell me if you have anything to do."

The interviewer also looked over.

The researcher known as Xiao Li looked at the reporter, then at Peng Engui, thinking that he had nothing to say, he picked up the small laptop next to him, handed it to Peng Engui and said, "Academician Peng, the latest release of the 307 R&D team News, according to the suggestion of Academician Zhao Yi, they improved the production process of K03A and produced alloy materials that can withstand 1360 degrees Celsius and have higher strength."

"—?"

Peng Engui's eyes widened immediately after hearing this, and he looked at the computer screen seriously with his mouth half-opened.

News released by the R & D team of 307 Steel Plant!

Academician Zhao Yi Zhao's suggestion?Improve the production process?Create a K1350A nickel-iron alloy that can withstand a high temperature of 03 degrees Celsius?

"Sigh~~~"

Peng Engui gasped in shock.

The reporter next to him saw the situation and knew that something big had happened, so he quickly asked Xiao Li who spoke in a low voice. Xiao Li didn't hide the reporter's back just now, so he explained it to him directly.

After hearing this, the reporter asked doubtfully, "Academician Peng, didn't you just say that K03A has no potential for improvement? Now that K03A has improved again, how long do you think it will take to develop a new alloy to replace K03A?"

Peng Engui raised his head and looked at the reporter. He didn't know what to say. It is true that he was elected as an academician of the Chinese Academy of Engineering and he had made many achievements in alloy materials, but the number of interviews he received was very limited. He suffocated and his face flushed.

After waiting for a long time, Peng Engui said, "I don't know, I can't say for sure about the research and development. That's all for today."

"Little Li!"

Peng Engui stood up, his voice immediately raised, "And you", he pointed to other researchers and students, "Go back to the laboratory, we have to work overtime to continue our research and development!"

……

University of Aeronautics and Astronautics, Metal Composites Laboratory.

Wang Zhifang and Zhang Hongtao also saw the news, and they were all amazed by K03A. The R&D team of 307 Steel Plant only said, "Under Zhao Yi's suggestion", it seems that Zhao Yi only provided suggestions, and the research and development was the real research on how to improve it. Yes, in fact, they are very clear that 'Zhao Yi's suggestion is very clear', the R&D team of the 307 steel plant just followed the suggestion, and the performance improvement of K03A can be said to be the credit of Zhao Yi.

"so……"

"Zhao Yi is really not talking nonsense. At that time, he said that there was a big problem, and it was indeed a big problem!"

Wang Zhifang said with a sigh.

Zhang Hongtao was not so surprised, but he thought it was normal, "Teacher Wang, I said it a long time ago, I must be right to hear what Zhao Yi said. He is a genius, and we are ordinary people. We rely on experience and his talent. But in research, talent is more important."

Wang Zhifang nodded approvingly.

Zhang Hongtao continued, "I worked with Academician Zhao on the research and development of satellite shell materials before. His suggestion is really... just listen to it. The final result is the same as what he said, and academician Zhao also gave it to him. I have a few suggestions that are all right."

Surprised, Wang Zhifang lost his mind and asked, "Then what should we do now? Do research on K03A? But we know how to do it!"

"Wait."

"Wait?"

Zhang Hongtao said, "I have communicated with Academician Zhao, and he said that he is waiting for the news from 307 to do research and development based on the upgraded K03A, but I feel it is still early."

"It's still early?"

Zhang Hongtao shook his head, "It's not yet time. As far as I know, Academician Zhao's suggestion report has only been submitted a few days ago. 307 must have not improved it according to the suggestion. After a while, let's see, there must be improvements."

Wang Zhifang opened his mouth and dared to refute.

If it was changed to before, he kept saying 'you are dreaming', but after seeing the news, he found that he couldn't say anything, the 'big problem' that Zhao Yi said really existed, after the improvement, the performance of K03A was greatly improved, When all his suggestions are adopted, will K03A be improved?

However, if the performance of K03A is improved, it will soon catch up with the international level. It seems that there is no need to improve it?Even if you want to continue to improve, is there still room for improvement?

Wang Zhifang suddenly became confused.

……

Yanhua University, Power Engineering Laboratory.

The work of the Kunlun engine prototype unit is very leisurely, just to maintain the parts.

Team leader Yuan Haitao, two engineers Zhou Qing and Xue Fengge sat in the office most of the time, discussing how Zhao Yi improved the engine. Renovate it outside.

In other words, before they came to the capital, they must not have believed that a person's ability is limited, and the structure of an aero-engine is too complicated. It is already remarkable to be able to design a part. How can it be possible to achieve improvement from the inside to the outside?

Now they believe that Zhao Yi can do it, but it's hard to say how effective it will be.

Zhao Yi's ability is quite worthy of recognition, but it is not only the design that limits the performance of the engine, but also some hard technologies, such as the material of the turbine blades.

Before Zhao Yi improved the combustion chamber, because of the limitation of the turbine blades, the improvement of the efficiency of the combustion chamber did not make much sense. damage.

So the problem is with the turbine blades.

"Difficult!"

Xue Fengge said with a sigh, "Academician Zhao is indeed very powerful, but the technical difficulties in materials..."

He shook his head as he spoke.

"Yeah, there's no way around it. Because of these limitations, the design of our team has ignored the power system, and we have to wait for the results of the alloy material."

Yuan Haitao also followed suit.

"There are results!"

Zhou Qing suddenly exclaimed, "Look! There are results. 307 said that the melting point of K03A has increased by [-] degrees Celsius!"

"real or fake?"

Yuan Haitao said something very calmly, walked over slowly to look at Zhou Qing's computer, and immediately widened his eyes, "It's really..."

"What is it really?" Xue Fengge also came over, and the three of them looked at the news released by the R&D team of the 307 steel factory, and they were all shocked.

For a long time.

Yuan Haitao sighed, "Academician Zhao, it's really true! It's okay! It's so fast to develop alloy materials!"

Zhou Qingdao, "He said just now that he was going to study the materials of turbine blades. I thought it would take half a year or a year even if there were any results."

"Let's go!" Xue Fengge stood up straight away.

"Go for what?"

"Congratulations to Academician Zhao, we are idle anyway."

"Makes sense!"

"go!"

The three of them went out of the room together and walked to the farthest part of the corridor, which was the office assigned to the metal material laboratory in the mechanical building.

Zhao Yizheng and Shen Binghe looked at the list of applicants together. It is easy to fight for other positions in the laboratory, but the researchers in the laboratory must choose carefully, ability is very important.

Shen Binghe thinks that an international student should be selected. A doctor of sea turtle with overseas study experience has a relatively better level of ability. He also has another reason: "English must be good. If there are results in the future, the English version of the paper must be published."

"It doesn't matter."

Zhao Yidao, "It's enough to be proficient in English. It may not be useful. We are looking for people who can do research and development, not translators. Doctors in materials majors from top domestic universities are also fine."

Although English is indeed very important, it is not necessarily so important. You have to find an international student whose level is good enough for professional papers.

The two were talking.

The three of Yuan Haitao came to find them, and there was a lot of congratulations when they entered the door, while Zhou Qing and Xue Fengge kept talking about 307 news.

After listening to a few words, Zhao Yi understood, "You mean, there are results from 307? The melting point of K03A has increased?"

"Increased by [-]!" Yuan Haitao said very forcefully, showing excitement.

Shen Binghe also became excited, "This is too powerful! Just adding [-] degrees will definitely greatly improve the performance."