Tianfeng Technology Company, assembly workshop.

A turboshaft D engine has completed the decomposition of the components, the engine is equipped with several main bearings are all produced by Linhai Technology Company in accordance with the new process method, the quality of the bearings is excellent, in order to actually verify these bearings, this engine is installed with these bearings, completed 150 hours of long-term verification test.

Aero engines, all kinds of bearings large and small, several of which require the highest main bearings, high-quality bearings, it is very important, especially for the main bearings.

After the engine was disassembled, all the main bearings were removed and cleaned cleanly, when Li Tianfeng and Sun Xiaoping came over, Qiu Wenan was already here early, and he was holding one of the main bearings to look at it.

At this moment, Qiu Wen'an's expression can be described as wonderful, his face was slightly shocked at first, and then there were bursts of surprise, and now, the hand holding the bearing trembled slightly, which shows how excited and joyful Qiu Wen'an's mood is.

As the chief model designer of the turboshaft D engine and the turboshaft E engine, Qiu Wenan knows the importance of high-quality top-quality aviation bearings to an engine, and now, Qiu Wenan has such a bearing in his hands.

When Li Tianfeng walked over, Qiu Wenan was completely immersed in excitement and joy, and he didn't notice Li Tianfeng and Qiu Wenan at all.

Li Tianfeng smiled slightly, and deliberately joked: "Mr. Qiu, what is so exciting?" ”

Looking up and seeing Li Tianfeng, Qiu Wenan's expression was even more excited: "Boss, I can't believe it, this is the bearing for completing the 150-hour long-term test." ”

Li Tianfeng was also interested, picked up a bearing, looked at it carefully and seriously, and even used a magnifying glass in order to see it more clearly and meticulously.

"Hmm. Not bad, not bad, very good! ”

While watching, Li Tianfeng nodded happily, which made Sun Xiaoping next to him also interested, seeing this. Li Tianfeng said: "Mr. Sun, you can also take a look at these bearings of ours." ”

Hearing this, Sun Xiaoping picked up a bearing with great interest, and looked at it carefully, it didn't matter if he looked at it, and soon, Sun Xiaoping was surprised and said happily: "Boss, it's really unbelievable." After 150 hours of long-term verification and testing, our bearings are still of such good quality that there is hardly any change. ”

Qiu Wen'an said: "If you don't come to see it in person, who would dare to believe that after such a long time of testing, these bearings can basically remain the same." ”

Li Tianfeng also looked at it just now, and the bearing he just saw had almost no change. The balls of the bearings are very clean and free of the slightest wear or scratch. Even with a magnifying glass and a five-fold magnification, no abnormality was found.

The whole bearing ball is very smooth, because it is smooth, the whole ball is jet black. Only a certain point has light reflected through, and only a small bright spot is seen, and the rest is jet black, indicating that it is a specular reflection.

The runway of the bearing is basically the same. It's also very smooth, with the slightest scratch, not even a very slight scratch.

For such a bearing, Li Tianfeng is naturally satisfied.

Li Tianfeng said: "Mr. Qiu, Mr. Sun, the quality of our bearings is good." ”

Qiu Wenan and Sun Xiaoping nodded in unison, and Sun Xiaoping said: "Such a bearing is definitely world-class, no, it should be a world-class aviation bearing." ”

Li Tianfeng smiled: "The quality of the bearing is good, and it is definitely more than enough to be competent for the turboshaft D and turboshaft E engines, even if we install this turbofan engine that we are developing, it can be basically competent." ”

The life of the first translation period of vortex D is 2000 hours (of course, it can also be positioned for 3000 hours, but Li Tianfeng has not positioned the life of 3000 hours for the time being), and the life of the first translation period of vortex E is 3000 hours.

As the power of civil airliners, the first turnover life of this turbofan engine is definitely more than 3000 hours, as the power of civil airliners, the longer the life of the engine, the better the economy.

Sun Xiaoping said: "Boss, it shouldn't be basically competent, but completely competent!" ”

"No!" Li Tianfeng shook his head gently, "As the power of civil regional airliners, our turbofan engine should have a long enough service life, and correspondingly, it should also be equipped with aviation bearings with a long enough service life." ”

Sun Xiaoping said: "Boss, in this case, we need aviation bearings with higher quality requirements. ”

Li Tianfeng said: "I have a way to further improve the quality of aviation bearings, that is to say, there is still room for improvement in the process of Linhai Technology Company." ”

There's still room for improvement!

Suddenly, not only Sun Xiaoping was overjoyed, but even Qiu Wen'an was the same. Originally, there was such a high-quality aviation bearing just now, which was enough to make people excited and happy, but I didn't think about it, there is still room for improvement.

Sun Xiaoping said: "Boss, if there is still room for improvement, and the quality and performance of the bearing can be further improved, it will be very rebellious!" ”

Li Tianfeng nodded, and almost blurted out, Lao Tzu is to go against the sky, and Lao Tzu is to make the world's top bearings.

…………

In this turbofan engine of Tianfeng Technology Company, the fan blades are the first to enter the trial production stage, process verification, and design verification stage.

This kind of titanium alloy hollow wide-chord fan blade, its processing method is to process the titanium alloy blank into two halves of the blade by cutting and grinding, weld it into an integral hollow blade body with vacuum diffusion, and finally superplastic into an extremely complex curved surface, and finally carry out high-speed and high-precision grinding to obtain a complex and precise curved surface, which is a new processing technology.

The manufacturing process of the fan blades is extremely advanced and superb, and the processed blades are also very beautiful.

The first batch of leaves, several of which are undergoing metallographic physical and chemical analysis, one of the leaves has been cut, and the structure of the metal material can be clearly seen under the electron microscope.

There is no problem with the titanium alloy organization!

A technician in a white lab coat came to this conclusion after carefully examining it for a long time, combined with what he saw under the microscope and some counts.

There is no problem with the titanium alloy structure of the blade, which shows that there is no problem with the material microstructure and mechanical properties of this titanium alloy hollow wide chord blade.

"Xiao Liu, how is the situation?"

"Director, there is no problem with the titanium alloy organization?"

Not far away, a middle-aged man wearing a white coat and glasses was the director in Xiao Liu's mouth.

"Xiao Liu, check the situation at the weld, you must be serious, especially the metallographic structure at the weld."

This wide-chord fan blade is two halves of the blade, which is welded into a hollow body with vacuum diffusion, and the joint part of the two halves of the blade is also the weld part.

"Director, I'll check it right away!"

After some preparation, Xiao Liu finally saw the situation at the weld through the guò electron microscope, and under the high-powered microscope, the situation was clearly visible, not only the metal structure of the weld, but even whether there were microcracks, whether there were microscopic defects, and so on.

Xiao Liu saw it very carefully, very seriously, his director solemnly explained just now is one aspect, in addition, Xiao Liu also knows that this fan blade is very important, very important, not a little sloppy.

After spending a long time, Xiao Liu frowned slightly, and then shouted, "Director, come and take a look, the situation seems to be a little wrong." ”

"Oh, there's such a thing." The middle-aged director came over immediately, the middle-aged director is very experienced, and he is still a senior engineer, and after taking a serious look, his brows furrowed slightly.

………

Foundry workshop.

Li Tianfeng planned to wait for the afternoon to go to the metallographic analysis room to take a look at the metallographic analysis of those fan blades, at this time, Li Tianfeng was paying attention to the casting of the titanium alloy casing of the compressor.

This is the compressor titanium casing of this turbofan engine, and the titanium casing of the turbofan engine is not a fuel-efficient lamp. There are many strangely shaped structures on the inner and outer walls of the engine barrel, and the manufacture of these strange components requires corresponding casting or welding technology, and even some ultra-thin components and components with unique shapes generally need to be welded.

It was precisely because he knew that the titanium alloy casing was not fuel-efficient, so Li Tianfeng personally opened the casting workshop, and Zeng Qinghai also came over in person.

This is the first time that the titanium alloy casing of a compressor has been cast!

In the conference room of the casting workshop, Li Tianfeng is carefully looking at the casting process regulations, some time ago, Li Tianfeng's main energy is on the design of this turbofan engine, and basically there is not much energy to personally check the process of each part.

Now, with the basic completion of the design of the core machine, some parts have begun to enter the trial production stage, especially a key part, difficult parts have begun to trial production, Li Tianfeng must begin to focus on the trial production of each part.

It has to be said that this turbofan engine is designed with full consideration for manufacturability, although the titanium alloy casing is extremely demanding and very technical, but it is far from being able to start, on the contrary, it is not as difficult to cast as imagined.

At the beginning, the turboshaft C engine of factory E and the intermediary casing of titanium alloy made factory E anxious because of its poor manufacturability, and the titanium alloy casing of Tianfeng Technology Company required the accuracy to be much higher than that of the intermediary casing of factory E, but it was not as difficult to cast as the intermediary casing of factory E.

After taking a look at the casting process regulations, Li Tianfeng said approvingly: "Mr. Zeng, the process regulations are good, and there are no major problems overall, but there are a few small changes to be made." ”

Zeng Qinghai said modestly: "Boss, the main thing is that the titanium alloy casing of our compressor has excellent workmanship, otherwise, it is really a difficult bone to gnaw." ”

Li Tianfeng nodded, but still reminded: "Although the craftsmanship is relatively good, there is also a lot of difficulty, and it cannot be taken lightly." ”

…………

Today's three watches, the third one is sent!

It's tiring! After the last word of this chapter, my head is already groggy, can you support it with a monthly pass? If you don't have a commuter pass, you can also use a recommended ticket! (To be continued......)