The car was parked in the parking lot of a hospital in Songzhou City, Li Tianfeng led Wang Ruobing, Xiao Ping carried a handbag, carried the necessary items, and happily followed behind the two.

The three of them entered the outpatient building of the hospital and went directly to the obstetrics and gynecology department, because there was already an appointment, and soon, an old woman with white hair who looked like she was sixty or seventy years old came over, this is the former director of the gynecology department, who has retired, if it weren't for Li Tianfeng's appointment, the old professor would not have come.

The old professor was very kind and peaceful, gave Wang Ruobing a careful examination, asked a lot of questions in detail, and then, the old expert said: "Congratulations to the two, the fetus is very healthy." ”

Hearing this, Li Tianfeng was overjoyed, Xiao Ping was even more happy, and was about to hug her grandson, and the happy Xiao Ping asked the old professor a lot of questions, such as the nutrition of pregnant women, precautions, and so on.

The old professor was also very patient and answered them one by one, and Xiao Ping wrote them down one by one.

After seeing the doctor, it was confirmed that she was pregnant, Li Tianfeng was very happy, as soon as she came out, Li Tianfeng hugged Wang Ruobing and kissed happily, "Haha, I'm going to be a father!" ”

Wang Ruobing said coquettishly: "Tianfeng, there are many people next to you." ”

Li Tianfeng smiled happily again, and Xiao Ping next to him also smiled happily when he saw this, and then said: "Tianfeng, I want to call your dad and make your dad happy." ”

Li Tianfeng said: "Yes, yes, this good news must be told to Dad, I can see that his old man has long wanted to hold his grandson." ”

Seeing the two of them like this, Wang Ruobing also smiled. There was a burst of sweetness in his heart, and he gently took the initiative to hold Li Tianfeng's arm, and everyone went downstairs together.

Back at home, Wang Ruobing was completely treated at the level of the empress, and Li Tianfeng did not go to Tianfeng Technology Company again in the afternoon, and accompanied Wang Ruobing at home.

………

Yesterday, I accompanied my wife to the hospital for a check-up. Coming to work in the company today, Li Tianfeng was full of cleanliness, and a smile kept appearing on his face, Li Tianfeng himself naturally did not notice his changes, but the people around Li Tianfeng still felt it obviously.

Xu Lilong came to Li Tianfeng's office to report work, and as soon as he entered the door, he obviously felt the changes in Li Tianfeng, and thought to himself. Yesterday, Mr. Li said that he had a private matter, and it seems that this is a happy event, which can be seen from the look on Mr. Li's face.

It's not just Xu Lilong, as soon as he goes to work, Liu Wei enters the office to pour tea for Li Tianfeng, and when he cleans up the office, Liu Wei discovers this change in Li Tianfeng.

Liu Wei thought in her heart, could it be that the boss had encountered some great joy. I was so happy, and my face was completely filled with joy.

Li Tianfeng was in high spirits. By the way, he was also full of passion for work, after listening to the report and processing the documents, Li Tianfeng went to the assembly workshop with great interest.

Recently, as the 'TFWS003' turbofan engine began to enter the assembly of components, Li Tianfeng came more diligently. Basically, I came to see it every day, and Li Tianfeng knew the assembly progress of this engine well.

Walking into the general transfer workshop, I saw that some new parts had arrived, and the accessories of this first prototype were further complete. There are relatively few missing parts, and Li Tianfeng is more happy in his heart.

Walking to the assembly station of the combustion chamber parts, Li Tianman looked at it happily and saw the flame cylinder placed on the workbench, looking at it more seriously and being more satisfied.

This is a slightly improved and perfected flame barrel, with some new designs, more adequate fuel combustion and higher fuel efficiency.

The combustion chamber of the 'TFWS003' turbofan engine is naturally a high-load combustion chamber, and the basic design ideas are basically the same as the turbofan 16 and turbofan 17 engines, but on this basis, there are certain design improvements and improvements.

The outer ring of the flame cylinder is a laminate cooling structure, and the inner ring is a ceramic composite material with a multi-oblique hole divergent cooling structure. Such a flame barrel has the ability to withstand higher temperatures due to its low weight at the same level of oil-gas ratio.

Li Tianfeng took a look at this flame cylinder with great interest, and then went to the turbine parts assembly station, on the assembly workbench of this station, a lot of turbine blades and turbine discs at all levels were placed.

The design of the turbofan part of the turbofan engine of the TFWS003 type also adopts the high-load turbine design, which is basically the same as the turbofan 16 and turbofan 17 engines, and the scale design is carried out on the basis of the turbofan 16 engine.

Whether it is a turbine disk, a turbine shaft, or a turbine blade, its structure is basically similar to that of the turbofan 16 engine, but the size is smaller.

The turbine disc is a double-width plate design structure made of powder metallurgy, and the turbine blades are single crystal blades, and the hollow turbine blades are ultra-cold design structures.

The so-called "ultra-cooling" is also known as super cooling, each "ultra-cold" blade has hundreds of small holes cast or laser-punched, and each blade looks very delicate.

"Ultra-cool" turbine blades, so that the turbine inlet gas temperature is more than 200K higher than the general single crystal blades, in addition, there are also a lot of turbine guide blades placed on the workbench, which are also ultra-cold structure design, are precision casting single crystal hollow guide blades.

Li Tianfeng looked at it a little, the blades had been weighed, the turbine disc had also been completely balanced, and in two days, the assembly of the turbine rotor should begin.

After looking at the turbine rotor assembly station, Li Tianfeng saw the dynamic balancing area in the distance, which seemed to be a fan rotor being dynamically balanced, and from a distance, it looked like the fan rotor of the 'TFWS003' turbofan engine that was being assembled a few days ago.

Seeing this, Li Tianfeng walked over and prepared to take a look at the dynamic balance of the fan rotor, because the dynamic balance performance of the fan rotor is very important, which is related to the service life, vibration, noise and other aspects.

The excellent dynamic balance performance means that the mass distribution of the rotor is very uniform, and the high-speed rotation will be very stable, even if the speed reaches tens of thousands of revolutions. On the contrary, it will vibrate and make noise, and even affect the service life of the engine.

Li Tianfeng walked over with great concern, this is exactly the fan rotor of the 'TFWS003' turbofan engine, after the assembly has been completed. Balancing is in progress.

Seeing Li Tianfeng, several workers greeted Li Tianfeng one after another, and Li Tianfeng nodded with a smile: "It's okay, you're busy with yours, I'll take a look next to me first." ”

After speaking, Li Tianfeng carefully looked at the dynamic balance of the fan rotor. Obviously, Li Tianfeng has already seen that this fan rotor is carrying out the second dynamic balancing, and before that, it must have been dynamically balanced once.

Master Lu, who was responsible for assembling the fan rotor, was also beside him, personally watching the dynamic balance of the fan rotor he assembled.

It didn't take a long time to balance the dynamics, and just a few minutes later, the rotating fan rotor gradually stopped, and the middle-aged master in charge of the dynamic balance said, "Lao Lu." Barely qualified. ”

Li Tianfeng saw that he was really barely qualified, basically to the limit of the qualified range, and if the unbalance was a little higher, it would be beyond the qualified range, and it would be unqualified.

Although it was only barely qualified, Master Lu seemed to be quite happy, such a large fan rotor, and the dynamic balance requirements were so strict. Barely passing just two times, which is a rarity.

Master Lu said: "Mr. Li." When the fan rotor was assembled, according to your requirements, the No. 6 fan blade and the No. 11 fan blade were reversed, and the first dynamic balance of the fan rotor was better, and the deviation was not much. ”

Li Tianfeng said: "Master Lu, the first dynamic balance is unqualified. You can adjust a few of the fan blades slightly according to the first balancing. ”

Master Lu said: "Mr. Li, you are really tall, you can see at a glance, we have slightly adjusted a few of the fan blades according to the first dynamic balance, this is not." After the adjustment is completed, it is sent over for the second dynamic balancing. ”

Li Tianfeng Road; "It's not bad, the second dynamic balance is barely qualified, Master Lu, your assembly level is good."

Rotating parts with dynamic balancing requirements, such as fan rotors, compressor rotors, and turbine rotors, often have extremely high assembly requirements, and have high requirements for assembly workers, otherwise, the process of dynamic balancing will make you anxious.

Such parts, not only the assembly is completed, not only the technical conditions, the assembly size to meet the requirements, the amount of dynamic balance should also meet the requirements, if the dynamic balance is not qualified, then it must be reinstalled, if the technical level is not good, even if it is reloaded, it is difficult to meet the requirements of dynamic balance.

Master Lu was also a little proud of his assembly, nodded happily, and then said: "Mr. Li, the dynamic balance of this fan rotor is only barely qualified, let's adjust the blades again, install it again, and re-balance it, we will definitely be able to achieve a better dynamic balance effect."

Li Tianfeng said with a smile: "Master Lu, there is no need to be so troublesome, go find a set of grinding tools." ”

Soon, Master Lu found a set of grinding tools to come over, looking at the appearance of Master Lu's tools, Li Tianfeng estimated that this Master Lu should also be an expert in polishing.

Li Tianfeng pointed to the fan disc on the fan rotor and said, "Master Lu, do you know the material removal area of the fan tray?" ”

Master Lu nodded and said, "Mr. Li, you mean to polish off some of the materials in the material removal area of the fan plate?" ”

Li Tianfeng said: "Exactly, the dynamic balance result just now has been barely qualified, and then remove a little material from the fan tray and dynamic balance again, I dare to guarantee that the dynamic balance performance of this fan rotor will be very good." ”

On the fan tray, there is a special dematerialization area, which allows the removal of part of the material, and the purpose of removing the material is naturally to ensure the better dynamic balance performance of the fan rotor.

Of course, if the dynamic balance of the fan rotor is relatively large, then you can only replace the blades, or adjust the position and weight of the blades, but if the dynamic balance is not large, or even barely to the extent of qualification, remove a little material from the fan tray, then you will get immediate results.

However, the fan tray is on the material, which is a technical job.

………

Today continue the three watches, the third watch will be sent!

Ask for a monthly pass, the support of recommended tickets, friends who haven't added a collection, hurry up and add a collection, a few copies of this book are also considered a little fat, it has been a million words, and it can be slaughtered. (To be continued......)