In the past two days, Zeng Qinghai has been in a very good mood, he feels a lot brisker when he walks, and he is full of enthusiasm for work.

Early in the morning, Zeng Qinghai drove his Mercedes-Benz car, found a place in the parking lot on both sides of the gate of Tianfeng Technology Company, parked the car, and after getting out of the car, happily walked towards the technology center building.

On both sides of the gate of Tianfeng Technology Company, a large parking lot is planned, lined up, a total of two neat rows, neatly parked a lot of various cars, one or two years ago, this parking lot was still relatively empty, and now, at least eighty percent of the parking positions have parked cars.

This also shows that after so many years of development, Tianfeng Technology Company has developed well, the income of employees is relatively high, and more and more employees are buying cars.

Zeng Qinghai walked briskly into the technology center building, into his office, sat on his comfortable office chair, whistled softly, and took out a string of brand-new keys from his pocket, his face full of joy and happiness.

This is the key to a string of villas, Tianfeng Technology Company staff community, this batch not only has a thousand apartment-style hardcover rooms, but also has a quota of ten villas, these ten villas, basically distributed to the middle and high-level of Tianfeng Technology Company.

As a middle-level manager, Zeng Qinghai, the head of the process technology department, performed well in the development and manufacturing process of the turboshaft D engine, solved a series of process and technical problems, and led the process technology team to also show excellence, Li Tianfeng was very satisfied, so Zeng Qinghai was fortunate to be assigned a villa.

Villa!

In the past two days, Zeng Qinghai was completely immersed in joy, not to mention that he was full of enthusiasm for his work, and in his spare time, he often took out this set of keys in private, which was simply in vain.

The villa was luxurious. Such a three-story villa must be millions more expensive in the market price of Songzhou City, and Li Tianfeng is also polite, and he did not treat the outstanding middle and senior managers of Tianfeng Technology Company at a loss, not only took out ten sets, but also. Only a symbolic amount of money.

"The owner is so nice and I like it"

took out the key, looked at it for a long time, Zeng Qinghai thought so, then put the key on his desk, turned on the computer, and prepared to start the day's work.

Happened. A senior engineer knocked on the door and came in, reported a little to Zeng Qinghai, and asked Zeng Qinghai to sign a craft paper.

Seeing the set of keys on the desk, the senior engineer said enviously: "Minister Zeng, this is the key to the villa!" ”

Zeng Qinghai smiled happily and said: "Yes, this is the key to the villa, the boss is good, and he gave me a villa." Wang Gong, you are not bad. Divided into a four-bedroom apartment. ”

Wang Gong said happily: "It is a four-bedroom apartment, with an area of more than 160 square meters, which is very good, I am very satisfied, and our family happily moved to a new house yesterday." ”

Zeng Qinghai said: "Wang Gong, that's good." Move so fast! ”

Wang Gong rubbed his hands happily and said: "The house is finely decorated, and there is no need to add furniture and electrical appliances, just bring a little daily necessities in." ”

Zeng Qinghai smiled happily, and then said, "Wang Gong, work hard." Don't live up to the expectations of your boss and strive to contribute to the company! ”

Wang Gongdao, "Minister Zeng, this is certain, now that I have moved into a new home, I have no worries, I am sorry for myself and the boss if I don't work hard." ”

Like Wang Gong, there are many senior engineers who are assigned to four-bedroom houses, and even some excellent engineers who are also assigned to four-bedroom houses.

Like Zeng Qinghai, there are a total of ten people who are lucky enough to be assigned to the villa, three executives, Li Tianfeng, Sun Kang, and Xu Lilong, each with one set, and seven excellent middle-level managers, such as Zeng Qinghai, in addition, Liu Wei.

In addition, Qiu Wenan and Sun Xiaoping are excellent in the design of the turboshaft D engine, each of them has a villa, and the rest have several middle-level managers, a total of seven people, and half a year later, Li Tianfeng will also take out a few villas to reward outstanding middle and senior managers.

………

Center for Materials Engineering.

Li Tianfeng came here to see the development of a certain ceramic material, which is a ceramic material for flame cylinders.

With the increase of thrust-to-weight ratio, the inlet and outlet temperatures of the combustion chamber are significantly increased, especially the outlet temperature rises significantly, the heat release rate is significantly improved, and the performance requirements of the combustion chamber are also improved, the weight limit of the combustion chamber is further increased, and higher requirements are put forward for materials and cooling.

For turbofan engines, to improve the thrust-to-weight ratio, it is necessary to increase the temperature before the turbine, and to increase the temperature before the turbine, it is necessary to have a flame cylinder that can withstand higher temperatures, when the temperature before the turbine is further improved, reaching 1500K, or even higher temperatures, the simple superalloy metal material flame cylinder is difficult to meet the needs, even if the most advanced cooling technology is used, it is not possible.

Undoubtedly, ceramic materials can meet this, at present, ceramics are the only high-temperature resistant materials that can be cooled at 1370 °C, of which silicon nitride is not only good strength and the safest, the use temperature can reach 1650 ~ 1750 °C, many countries have included ceramic matrix composites into the national high-tech development plan.

In the 80s of the 20th century, foreign automobile engines with high-temperature ceramic structures have withstood long-term tests. This high-temperature ceramic material has also been tested on aero-engine hot-end components.

The combination of ceramics in the form of coatings with metal substrates to give full play to the advantages of high temperature resistance, corrosion resistance and low density of ceramics is called thermal barrier ceramic coating. The use of a sintered metal fiber structure (flexible layer) between the thick ceramic coating and the superalloy flame barrel, known as a composite metal/ceramic flame cylinder, is a transition to a fully ceramic cooling structure.

Tianfeng Technology's turbofan engine is designed with a composite metal/ceramic flame cylinder, but the key is not in the design technology, but in the material, especially this ceramic material.

Li Tianfeng walked into the materials engineering center and walked straight into one of the real rooms, in which there were several scientific researchers wearing white coats, one of whom was about forty years old, and immediately walked in when he saw Li Tianfeng.

"Mr. Li, hello!"

Li Tianfeng said: "Chen Gong, how is our research on ceramic materials progressing?" ”

Chen Weiping, who is about forty years old, is a doctor of materials science, and used to be the technical backbone of a well-known research institute in China, with high attainments in metal materials, but he is better at the research of non-metallic materials.

At the beginning, Chen Weiping joined Tianfeng Technology Company, mainly with the purpose of Tianfeng Technology Company's high salary, good environment and advanced equipment, but soon, Chen Weiping was immersed in it and completely immersed in the research of ceramic materials.

Especially under Li Tianfeng's technical guidance, it was as if a new door had been opened, and Chen Weiping almost reached Cheng Dù, who forgot to sleep and eat, and was almost obsessed with his own research.

Now, seeing Li Tianfeng asking, Chen Weiping said: "Mr. Li, you came just in time, we have completed the spraying, and we are about to send the sample into the test equipment for sintering." ”

Li Tianfeng said with slight joy: "Oh, the speed is so fast, it can already be sintered." ”

Another scientific researcher in a white coat next to him said: "Mr. Li, you don't know, our Chen Gong is simply forgetting to sleep and eating, and he works very hard, otherwise, there is really no such fast progress." ”

Chen Weiping smiled and said: "Boss, don't listen to their nonsense, the main thing is that Mr. Li has solved several technical problems for me, otherwise, where is there such a smooth lì." ”

The ceramic material has been sprayed and has begun to be sintered, Li Tianfeng is also more happy, and he is not entangled in these, and he waved his big hand and said: "Chen Gong, if you can, you can sinter now, I want to take a look at the situation after sintering." ”

Chen Weiping said: "Mr. Li, there is no problem, I will arrange it immediately." ”

Because it was prepared for a long time and relatively fast, it didn't take long for the prototypes to be fed into the test equipment and start high-temperature sintering.

The procedures and parameters of sintering, including temperature control and time control, have strict requirements, and obviously, these things have been calculated in advance, and a detailed process has also been formed, and several researchers strictly operate according to these.

Li Tianfeng was slightly nervous and excited to watch everyone operate, Li Tianfeng knew that if the research of this ceramic material was successful, it would be simply epoch-making, fill the domestic gap, and have a pioneering success in the development of his turbofan engine.

With this ceramic material, it is possible to develop and produce a composite metal/ceramic flame cylinder, if the development fails, it is more troublesome, not good, to use the traditional superalloy material to design the flame cylinder, their own high heat load combustion chamber design will also become a bubble.

It's not good, the design of this turbofan engine has to be pushed to the beginning, because there is no qualified ceramic material, the composite metal/ceramic flame cylinder design cannot be used, the temperature before the turbine will not meet the design requirements, and the thrust-to-weight ratio of the engine will not meet the design requirements.

Although Li Tianfeng's face was not shocked, he was slightly excited in his heart, watching these scientific researchers operate, and the time passed minute by minute.

Drip!

The indicator light of the test equipment is on, showing that the sintering is completed, and the cooling begins to be lowered according to the procedures and parameters.

…………

Today's fourth watch broke out, and the fourth watch was sent!

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