Chapter 587 Turbofan 10 turbine blade production begins! (Ask for 1

This kind of cross-border cooperation, especially such an unusual cooperation model, naturally cannot determine all the details in a day or two.

However, the intentions of both parties are indeed very strong, and the areas they are good at are almost completely complementary, so there is nothing worth wasting too much time on.

Especially for Eurocopter, since this cooperation is carried out in exchange, it does not even involve money issues, and there is no worry about being audited (although they have indeed shared it).

It can be said that it is as if it is tailor-made for them.

Therefore, in less than a month, the details of the NH90/Zhi-12 project jointly carried out by Bingfei Group and Eurocopter were notified to Chang Haonan.

It also means that his plan has basically been more than half successful.

Next, just let Liu Hongbo do targeted calibration on the transmission system, especially the gearbox part, and then wait for the Europeans to find the problem.

No matter how you say it, Eurocopter is still a well-known giant in the helicopter industry, so it is unlikely that the cause of the accident cannot be found out.

Moreover, when that time comes, Chang Haonan will definitely help them.

When he received the news, he was in his chief designer's office, looking at the experimental data submitted in front of him and adjusting the model of the single crystal solidification process.

Several core personnel involved in the Turbofan 10 project were also present, and naturally they saw the contents of the document.

After all, news about external cooperation is not something that needs to be kept secret.

Wu Fei Haonan knew earlier, and someone would come to inform him. If others wanted to know, they would have to ask themselves.

"Mr. Chang, Bingfei's cooperation method is... very wonderful..."

He Ming flipped through several pages of documents to the end, and his whole feeling could be said to be enlightened:

"Just by modifying such an inconspicuous operation in the name of the article, we can circumvent many regulations against us. This is great news for foreign companies that want to cooperate with us but have difficulty in operation. !”

"Whoever came up with this idea is definitely a genius..."

As he spoke, he smacked his lips with unfinished content.

Obviously, He Ming didn't know that the genius he was talking about was right in front of him.

Haiyide, who was sitting on the other side, knew more about the situation and laughed when he heard He Ming's emotion:

"Mr. He, the person who came up with the idea is sitting here..."

As he spoke, he pointed with his pen at Chang Haonan, who was sitting in the first place.

"what……"

"This……"

The conference room was filled with happy air for a while.

"Well, I came up with this method after getting some inspiration from foreign experiences."

Chang Haonan raised his head, waved his hands to the other people and said.

This is not an excuse, but he really made reference to other cooperation projects.

Nothing more than a future project.

The Italian Alenia Macchi M346 trainer aircraft and the Russian Yak 130 trainer aircraft are products in this isomer form.

The core designs of the two are almost identical, but due to some subsystem performance and customer demand factors, the final performance is slightly different.

Although everyone knows that the M346 is actually a technical solution provided by Yakovlev, and the Yak 130 received financial support from Italy, both parties claim that they were independently developed by themselves and have nothing to do with the other party.

What cooperation?

Already divorced!

Therefore, the M346 can normally enter the air force service of NATO countries.

In fact, judging from the current time point, this project should be almost at the end of the cooperation and separation between the two parties.

After a brief pause, Chang Haonan added another sentence:

"And, in the final analysis, this is still a passive way to circumvent restrictions. In a few years, we should make them dare not restrict us at all!"

"As long as actual benefits can be obtained, these nominal things can be put aside for now."

He Ming, who had recovered from his childhood embarrassment, also quickly changed the topic:

"I just don't know if we, who are engaged in aviation development, will be able to let foreigners come to us for cooperation..."

After receiving huge orders for the transformation and upgrading of more than a hundred aircraft from Persia, all of which were twin-engine aircraft, Liming Factory has intuitively understood why arms exports are called a huge profit industry.

Although the transactions between the two countries are conducted in the form of barter, that is, Persia pays China for crude oil instead of US dollars, the China Petroleum Company that receives the oil will make internal payments based on the allocation price.

Although this price is still much lower than international oil prices, the Liming Factory was still in trouble a few years ago and could not even pay wages. It was a huge surprise to have never seen so much money. .

If we can directly cooperate with Europeans to earn US dollars...

He Ming felt excited just thinking about it.

"When we finish the project at hand, it will be soon..."

Chang Haonan looked at the computer in front of him that was in the process of calculation, stretched and said.

If ordinary people said such a sentence, they would probably only regard it as an encouragement or a slogan.

But the person who spoke this time was Chang Haonan...

Then we have to pay attention to it.

As a result, the work enthusiasm in the entire conference room suddenly increased a lot...

……

After more than half a month.

Maybe it was because he was inspired by the cake drawn by Chang Haonan, or maybe it was just good luck.

In short, the progress of constructing a single crystal directional solidification process model is much faster than expected.

Inside the precision casting center, Chang Haonan, dressed in blue work clothes, stood in front of the specially improved directional solidification furnace, explaining the key points of the entire production process to the equipment operators who would be responsible for the trial production task.

"The first process of preparing single crystal blades is to form crystal nuclei, but turbine blades have very high requirements for the integrity of single crystals, so we cannot use the traditional method of implanting seed crystals, but use a crystal selector to grow them naturally. columnar seeds for screening.”

"The crystal selector used in the production of turbofan 10 blades is designed on this drawing. The columnar crystals generated in the initial section are eliminated through the circular cross-section spiral crystal selection section. In the end, only one can enter the casting. The only thing that can be controlled in this part is the crystal selector. The temperature at the beginning..."

"The subsequent mold making process is no different from the past. You should all be experienced..."

"The most important thing is the last solidification part. The temperature of the hot end, that is, the water-cooling jacket of the crystallization table, is controlled at 25C. The temperature in the upper preheating zone is controlled at 1515±1C. The temperature in the lower preheating zone is controlled at 1550±1C. The pulling speed is between 4-4.5mm/min..."

"In addition, during the solidification process, it is important to note that the expansion coefficients of the ceramic core and the shell are different. After high-temperature cooling cycles, core eccentricity or core leakage can easily occur, resulting in dimensional deviations or even complete crystallization failure. Therefore, be sure to check the expansion coefficient before production. Do a good job of fixing..."

"..."

Such detailed process parameters and precautions during the production process made everyone who listened feel relaxed and a little surprised.

After all, this can be said to be the first industrial production of single-crystal blades made of nickel-based high-temperature alloy materials in China, but the operating requirements they just wrote down are almost like a mature operating manual.

Even if you have heard some of the deeds of the young commander in front of you, you still have some doubts.

This is also human nature.

After all, those selected to participate in the trial production tasks were all experienced technicians.

But being rich in experience also means that they are more easily influenced by past knowledge.

Of course, everyone is an old comrade in the military industry system, and accidents are accidents. It is impossible for anyone to jump out and question the authority of the commander-in-chief without the foresight.

The name Chang Haonan, at least within the aviation industry system, is still very convincing.

Following Ma Liping's order, all operators quickly returned to their workstations and started pre-production preparation tasks step by step.

"Mr. Chang, I have prepared two sets of personnel and equipment this time, so that each round of production testing can be seamlessly connected without wasting any time..."

Chang Haonan was stunned for a moment by Ma Liping's words, and then he realized that the other party thought that he might need to try a few more times to succeed, so he made extra preparations.

how to say.

The idea is good.

It’s just that there’s a high probability that it won’t be used.

"Is this..."

The latter thought about it for a while and felt that if it was 100% guaranteed to be successful, it seemed a bit contrary to science, so he accepted it a little bit:

"Director Ma's preparations are indeed in place, but I am probably... 95% sure that the production will be successful in one go!"