Along the way, talking and laughing, it was also relatively relaxed, and the time passed relatively quickly, and after ten minutes, we walked to the main entrance of the blade processing plant.

Tianfeng Technology Co., Ltd. has two specialized blade processing plants, which are the first processing center for blade parts, with an area of more than 10,000 square meters, and the plant looks very large and majestic.

The major general next to him was obviously the first time to come to Tianfeng Technology Company, and when he saw this plant, Comrade Major General said: "Mr. Li, each of your factories is so huge, so spectacular, and it looks very visually impactful." ”

Li Tianfeng smiled happily, and then everyone entered the factory, and inside the factory, it was busy, but everything seemed orderly, neat, and orderly.

Passing by a machining center, Zhang Haiping said: "Mr. Li, this is the turbine blade of the turboshaft D engine." ”

Li Tianfeng said: "Minister Zhang, this is the free turbine blades of the turboshaft D engine, these blades, precision casting, and then precision machining, such as tenon broaching, and like this process blade boss milling. ”

Li Tianfeng took a leaf and introduced to everyone that in view of the fact that many military people came to Tianfeng Technology Company for the first time, Li Tianfeng introduced it in detail.

The blade processing center is naturally very large, and while everyone walks, Li Tianfeng introduces it to everyone from time to time, and walks towards the equipment that is processing fan blades.

Many workers who were working couldn't help but whisper a few words when they saw Li Tianfeng accompanying this large group of officers, including lieutenant generals and major generals.

"Lao Yu, look at Mr. Li!"

"One lieutenant general, two major generals, the lowest rank is lieutenant colonel, who are these?"

"It seems to be a military expert from the turbofan 20 engine review panel."

"Oh, yes. Yes, I've also heard that our turbofan 20 engine has entered the design review. ”

"Design review! If it passes, then the design can be finalized. ”

"Good job, everyone! If you perform a little better, you may be able to evaluate the meritorious person in the development of the turbofan 20 engine. ”

“……”

The vast number of front-line workers, everyone is working. While glancing at the direction where Li Tianfeng was from time to time, he chatted a few words from time to time.

Li Tianfeng took everyone to the fan blade processing area, here, several pieces of equipment are lined up, and there are many semi-finished blades to be processed in the semi-finished product area.

These devices are basically the same model. But many people have never seen such equipment, and one of the colonels even asked.

"Mr. Li, what kind of equipment is this, it looks very advanced, but it doesn't look like domestic equipment."

Li Tianfeng said: "This is a professional superplastic molding and diffusion welding molding equipment jointly developed by our Tianfeng Technology Company and a very powerful machine tool factory in China. ”

The colonel was slightly surprised. Without thinking, Tianfeng Technology Company can jointly develop special equipment with machine tool factories. The colonel said: "Mr. Li, you have a lot of equipment developed in this way." ”

Li Tianfeng said: "There are some, there are dozens of bars, more than a dozen models." ”

The colonel said, "That's a lot. ”

Li Tianfeng nodded, and then introduced the processing of fan blades. On the equipment, one of the machines is processing the fan blades of the turbofan 16 engine, and the other is processing the fan blades of the turbofan 18 engine.

Li Tianfeng introduced: "This is a semi-finished product, two halves of fan blades, you see the operation of the workers. ”

Everyone saw the workers who operated this equipment. The two halves of the fan blades are coated with solder agent according to the process requirements, and the metal honeycomb is sandwiched in the middle, and then these are put into the forming mold of the equipment, the equipment begins to close, slowly presses down, and the temperature and pressure in the mold rise, and the temperature and pressure parameters can be seen from the LCD screen of the equipment.

After reaching the temperature and pressure required by the process, stabilize for a certain time, and the process of this time is also strictly regulated, when the time comes, the temperature in the mold drops, the pressure comes down, and the mold rises slowly.

The worker takes out the formed blade from the mold, and at this time, the fan blade is basically formed and has a beautiful profile.

One of the soldiers said: "Mr. Li, this doesn't seem to be difficult, why can't other aero engine manufacturing companies master this process." ”

Li Tianfeng smiled, Zhang Haiping next to him obviously saw that it was not simple, Zhang Haiping said: "You just take a look like this, you only see a little skin, so it looks very simple, in fact, the middle of the technology content is extremely high, especially those process parameters, very not simple." ”

Li Tianfeng also said: "Looking at the world, there will be no more than five aviation industry enterprises that have truly mastered this superplastic molding and diffusion joining process. ”

No more than five!

At this time, everyone realized that this process was not simple, and even, a colonel was interested, personally picked up a fan blade, and looked at it seriously.

There is another person, I saw a new mold not far away, the mold is open, and I can clearly see the appearance of the cavity in the mold, which is completely the shape of a blade, which is obviously also a superplastic molding mold used to process some kind of fan blades, but it is much shorter than the turbofan 16 fan blades.

Zhang Haiping also noticed this mold, and immediately walked over with great interest, and said to Li Tianfeng: "Mr. Li, is this the fan blade mold of the turbofan 20 engine?" ”

Li Tianfeng said: "Minister Zhang, it is the superplastic molding mold of the turbofan 20 fan blades, and the process preparation is almost complete, and in another ten days and half a month, the fan blades of the turbofan 20 will also begin to be trial-produced." ”

Zhang Haiping said happily: "Good, good, this is good!" ”

The rest of the people surrounded this mold, looking at it with relish, and many people even praised: "This mold is so complicated, it looks very advanced, but it is also very exquisite." ”

Li Tianfeng seriously introduced it to everyone, and then, with everyone, watched it for a long time in the blade processing center.

We not only looked at the processing of fan blades, but also the processing of compressor blades, as well as the processing of various turbine blades.

………

The design review of the turbofan 20 engine was carried out in an orderly manner, and the experts carefully looked at the design data and process data of the turbofan 20 engine, and also went to the processing site from time to time to see the actual processing situation.

With the progress of the review, everyone's understanding of the turbofan 20 engine is getting deeper and deeper, and the more they understand this engine, the more they admire the technical strength of Tianfeng Technology Company.

"Minister Zhang, the turbofan 20 engine is well designed, and it comprehensively exceeds a series of technical requirements put forward by you at the beginning."

"Yes, Minister Zhang, the overall performance of the turbofan 20 engine has comprehensively surpassed the current engine of the J-10."

"It is definitely better than the current AL-31F engine, and in my opinion, even the F119 engine is not far from the old United States."

“……”

Li Tianfeng heard such a comment, his heart was happy, but he also felt embarrassed, compared with the turbofan 20 engine and the old United States F119 engine, there is still a certain technical gap, and the overall performance also has a certain gap.

Li Tianfeng said modestly: "Experts, thank you for your evaluation, this engine, if it is said that it comprehensively surpasses the AL-31F engine, I agree with it, but there is still a certain gap compared with F119." ”

Zhang Hongzu said: "Mr. Li, your engine, let us open our eyes a lot, the turbofan 20 engine has been successfully developed, will be our most advanced military turbofan engine in China." ”

Feng Qirong also said: "It is absolutely the most advanced in China, which I fully agree with, in addition, from the perspective of technology, the parts of the turbofan 20 engine are fully considered in the design, and the manufacturing cost, and even the possibility of large-scale mass production, which is very remarkable." ”

At this point, Li Tianfeng nodded, in terms of manufacturability, he has fully considered, even if the parts are very precise, it is not difficult to process, in addition, a large number of stamping parts are used instead of cutting parts.

You may think that the stamping parts are far from the cutting parts in terms of accuracy, but in fact, after the stamping of the parts is completed, some key parts still need to be precision machining, which can also meet the design requirements and does not affect the performance.

As for the cutting parts, good is good, the precision must be very high, but the process is complex, starting from the blank, after a series of machining such as turning, milling and grinding, and finally becoming a finished part, the cycle is very long, and the cost is relatively high.

In addition, the stamping parts used in aero engines are certainly not important and critical parts, and will not affect the overall performance of the engine.

Everyone spoke highly of the turbofan 20 engine, and Li Tianfeng naturally had a light on his face, a happy face, and a lot of face.

In this conference room, almost half of the experts, including Zhang Haiping, are commenting on the turbofan 20 engine, and everyone's evaluation is very high, and the atmosphere is good.

Suddenly, the door of the conference room was pushed open, and Liu Wei ran in panting, and said anxiously: "Boss, it's not good, in the small plate parts processing center, I almost got into a fight." ”

I almost got into a fight!

Li Tianfeng's face changed, and he immediately asked, "Mr. Liu, is it our employees fighting?" ”

Tianfeng Technology Company has advanced management, strict discipline, sound systems, and has never had an employee fight.

Liu Wei said: "Boss, it's not our employees' fights, you go and take a look, it's almost uncontrollable." ”

"Ahh Li Tianfeng's face changed again, it was not his own employees who were fighting, Li Tianfeng said: "Let's go, I'll take a look." ”

Zhang Haiping also seemed to realize that things were not simple, and immediately said: "Mr. Li, I will go with you." ”

…………

Today's three watches, the second one is sent! (To be continued......)