Master Lu didn't expect that Li Tianfeng's technical level was very high, and he was actually ready to guide himself to remove materials from the fan plate, and he couldn't help but be slightly excited, a little nervous, and even a little worried, what if he messed up.

It's a technical job, and even an experienced technician has to do some calculations to figure out the approximate weight of the material that needs to be removed before they can get started.

Seeing that Li Tianfeng didn't need to calculate at all, he picked up a marker pen and drew an area in the material area of the fan tray and said: "Master Lu, this position, remove the materials in this position." ”

Is it okay to do this, and there is no need to calculate at all? Master Lu looked at Li Tianfeng in surprise.

Li Tianfeng nodded and said, "Just this position, but be careful not to touch the blades and other parts." ”

Seeing that Li Tianfeng's face was serious, and he was still a little confident, Master Lu picked up the grinding tool, which was an electric grinding tool, installed the appropriate grinding and milling head, started the tool, and a buzzing sound came out, and the grinding and milling rotated at high speed.

Picking up the goggles and putting them on, putting on gloves, and holding the grinding tools in his hands, Master Lu's movements are relatively standard.

According to the position drawn by Li Tianfeng, the position began to be polished, and suddenly, sparks were everywhere, and at a speed that could be seen by the naked eye, the titanium alloy material in the polished position on the fan disc was removed.

"A little bit this way, yes, a little deeper......" Li Tianfeng personally commanded beside him, and Master Lu carefully polished it according to Li Tianfeng's guidance.

"A little more to the right, a little more inside, yes. That's it. Li Tianfeng kept instructing, and from time to time he looked at the depth of polishing and estimated the weight of the removed material.

A few minutes later. Li Tianfeng said: "Stop, stop, it's okay for the time being, clean up the fan rotor, and then try the dynamic balance." ”

After some grinding just now, a lot of titanium alloy metal chips have been polished, which must be cleaned up. Hearing this, Master Lu put down the grinding tools in his hand and took off his gloves. Pick up the snow-white non-woven cotton cloth, carefully wipe the rotor clean, and even scrub it with alcohol.

After wiping it clean, the fan rotor continues to be dynamically balanced. With the rotor mounted on the dynamic balancing machine. Correct, check that it is correct, and start to rotate slowly, and gradually increase the speed until it reaches the speed set by the dynamic balance.

When the speed stabilized, the LCD screen of the dynamic balancing machine began to show the dynamic balance of the rotor, and the result this time was much better than the last time, which was barely qualified. And this time it's fully qualified.

"Mr. Li, the dynamic measurement is fully qualified!"

Whether it is a master of dynamic balance. Or assembling this rotor, Master Lu, who polished it just now, was a burst of surprises.

Li Tianfeng naturally also saw the dynamic balance of the rotor, Li Tianfeng also nodded, "The dynamic balance is good, however, this is the fan rotor, we can also make the dynamic balance a little smaller, we have to strive for perfection." ”

Generally speaking, for large-diameter rotating parts such as fan rotors, the smaller the dynamic balance, the better, and the smaller the dynamic balance, the more stable the rotor rotates, the smaller the noise, and the smaller the vibration.

Master Lu is a master with many years of assembly experience, so he naturally knows this truth, but he didn't think about it, Li Tianfeng is still sure to make the dynamic balance of this rotor a little smaller.

Master Lu said in surprise: "Mr. Li, do you have a way?" ”

Li Tianfeng said: "Of course, stop the rotor first." ”

According to Li Tianfeng's request, the fan rotor gradually stopped, and was removed from the dynamic balancing machine and placed on the tooling bench next to it.

Li Tianfeng personally held the marker pen and marked the key position of this dynamic balance. Seeing Li Tianfeng marking on the fan rotor, Master Lu said, "Mr. Li, are you going to continue polishing?" ”

Li Tianfeng said: "Yes, we have to continue to polish, but the next polishing is delicate and demanding." ”

Master Lu took the initiative to ask: "Mr. Li, I'll come, you will guide me to polish on the side." ”

Li Tianfeng smiled and said, "Forget it, I'll come this time." ”

Master Lu looked at Li Tianfeng in surprise, obviously, Master Lu definitely couldn't believe that Li Tianfeng was going to polish it himself, and even, Master Lu thought in his heart, Li Tianfeng didn't know if he would use this polishing tool or not, and if he had polishing experience.

Master Lu said: "Mr. Li, let's come, you can guide me on the side which position to polish and how much material to polish." ”

Li Tianfeng said: "Master Lu, you get out of the way, I'll come." ”

After speaking, Li Tianfeng picked up the electric grinding tool on the table just now, took the wrench, and skillfully changed a grinding and milling head, which was a small conical alloy grinding and milling head, and then put on gloves and goggles.

Li Tianfeng is very skilled in all his movements, as if he is a master who has been polishing for decades, that is, Master Lu, and he may not be as good as Li Tianfeng.

Not only Master Lu, but also the masters who did the dynamic balance next to him, everyone was stunned and fell into sluggishness, which completely subverted everyone's understanding that the CEO of his company was so skilled in using grinding tools in front of everyone.

Li Tianfeng saw that Master Lu was blocking him, and couldn't help but say, "Master Lu, you get out of the way, I'll come, I'm going to start polishing." ”

Hearing this, Master Lu came back from his sluggishness and took a few steps to the side, while Li Tianfeng took the grinding tool, pressed the start button of the tool, and began to hum and polish.

The sound of grinding came, everyone came back to their senses, everyone took a few steps forward, stood not far next to Li Tianfeng, watched Li Tianfeng's grinding, and even, the workers at several stations not far away, saw this scene, and surrounded them curiously.

Li Tianfeng is very focused, obviously his head has already outlined, which position to polish, how much material to polish, has long been thought about, just like a great painter, before the pen has been conceived, once the pen is written, it is like flowing water, the pen is like a god.

Li Tianfeng's current situation is basically the same, he is also like a god, his movements are very skillful and sophisticated, and he is very finely polished.

There was silence all around, only the sound of Li Tianfeng's concentrated humming......

In a few minutes, Li Tianfeng stopped, put away the polishing tools, looked at his "masterpiece" with satisfaction, nodded very satisfied, and then said, "Master Lu, you clean it up." ”

Hearing this, Master Lu came back to his senses, slightly excited, holding the snow-white non-woven cotton, and the alcohol scrubbed the rotor clean.

Li Tianfeng couldn't help but smile when he saw a lot of workers around, and waved his big hand: "You can start the dynamic balance, let's take a look at the dynamic balance effect after this polishing." ”

Workers put the rotor on the dynamic balancing machine, start dynamic balancing, a few minutes later, the rotor began to rotate, gradually reach the predetermined speed, the liquid crystal screen on the dynamic balancing machine, the dynamic balance of the rotor is displayed.

Compared with the last time, the dynamic balance this time is much smaller, the last time is a good result, this time the dynamic balance is smaller, indicating that the dynamic balance performance of the rotor has been very good, and there is almost no possibility of improvement.

Master Lu said with admiration: "Mr. Li, I can't see that your skills are so good, the polishing is very perfect, and the dynamic balance performance of the rotor is even better." ”

Li Tianfeng smiled, he couldn't see this polishing, and Li Tianfeng himself was more satisfied.

The workers around looked at the dynamic balance of the rotor, and then looked at Li Tianfeng, many people's eyes were full of admiration, and they didn't think that as the company's boss, Li Tianfeng still has such skills.

"Mr. Li is really amazing, the fan rotor that he personally polished, the dynamic balance performance is so good."

"Yes, yes, Mr. Li looked handsome just now."

“……”

Seeing that everyone was looking at him happily, and many people had obvious admiration in their eyes, Li Tianfeng couldn't help but smile, the rotor dynamic balance was completely qualified, and Li Tianfeng said loudly: "Okay, everyone goes back to their jobs." After speaking, he walked towards the outside of the assembly workshop.

Walking out of the assembly workshop, Li Tianfeng thought in his heart, he had a momentary skill just now, and showed off his skills, this kind of thing, it would be better to do less next time.

………

New Year's Eve.

The first prototype of Tianfeng Technology's "TFWS003" turbofan engine has finally entered the final assembly, and the engine is being assembled on the assembly bench in the final assembly workshop.

Several assembly workers, while assembling this engine, while chatting, this is a few assembly workers in the assembly class, we have assembled turbofan 16 engines, turbofan 17 engines, today is the first assembly of "TFWS003" turbofan engine.

"Lao He, this engine is a small man compared to the turbofan 16 and turbofan 17."

"Well, the thrust of this engine is 10,000 pounds, and the total weight is only more than 400 kilograms, while the turbofan 16 engine is more than 2,000 kilograms."

"The engine is relatively small, but the fan is not small, and the channel ratio is larger than that of the turbofan 16 and turbofan 17."

“……”

Although everyone was chatting and assembling at the same time, the work on their hands was not delayed at all, and the combustion chamber, turbine, and compressor were installed......

In less than a day, the engine was in its infancy.

When the final assembly of this engine entered the second day, the engine completed the assembly of the main components, including the fan part, and the workers began to assemble the accessories and control parts of the engine, including wiring and pipelines, etc.

The engine control system is a fully digital control system, which is basically the same as the turbofan 16 and turbofan 17 engines, and is one of the most advanced engine control systems at present.

The engine is not large, only two units of work, the first "TFWS003" type turbofan engine prototype is basically completed.

…………

Today, we will continue to see three more, and the first one will be sent. (To be continued......)