Li Tianfeng is a vigorous and resolute person, he doesn't like to drag mud and water when he encounters problems, no, when he came out of the electronic laboratory and returned to his office, Li Tianfeng opened the design drawings of this electronic component in his computer and looked at it seriously.

These electronic components were all designed by Li Tianfeng himself, and now, if one of them has a problem, it is really difficult for others to intervene, so Li Tianfeng can only find the reason himself.

He designed it himself, and Li Tianfeng is naturally most familiar with the principles and design structures of these electronic components, and he can best prescribe the right medicine.

After looking at the design drawings for a long time, and in view of the series of test data in the electronic laboratory just now, Li Tianfeng can roughly judge that there should be an error in the manufacturing of a certain connection point of this electronic component.

But whether it is really this reason, you must contact Gu Qingguo for confirmation, so Li Tianfeng dialed Gu Qingguo's phone.

Li Tianfeng said: "Mr. Gu, hello. ”

Gu Qingguo said: "Mr. Li, our batch of samples has been received, how about it?" ”

Gu Qingguo and others naturally carried out relevant tests on this batch of samples, but they must only test some main performance and parameters, and it is impossible to be as strict and comprehensive as Tianfeng Technology Company.

According to Gu Qingguo's test, this batch of samples is undoubtedly qualified, so Gu Qingguo asked so easily.

Li Tianfeng said: "Mr. Gu, your strength is really strong, the first batch of samples, all of them are basically qualified, and there is only one model of two samples that has a little problem." ”

"Oh." Gu Qingguo was slightly surprised, "Mr. Li, there is also one of the models that is unqualified, what's going on?" ”

Li Tianfeng explained the situation in detail, and then said: "Mr. Gu, I guess there was a little mistake in the manufacturing process of such a piece. There is an error in a certain connection point, I estimate that it should be the No. 1257 connection point, Mr. Gu, you check whether it is the same as my estimate. ”

Gu Qingguo first sighed. Tianfeng Technology's testing is really comprehensive and strict, and then, Gu Qingguo immediately said: "Mr. Li, I will arrange an inspection immediately, once I find out, I will definitely call you as soon as possible." ”

Li Tianfeng said: "Mr. Gu, then I'll wait for your call." ”

This is the electronic component used in the electronic numerical control system of the turbofan 20 engine, no joke. Naturally, it is very rigorous.

Just now, in the electronic laboratory, it is only a preliminary test, and in the follow-up, there is a deeper, stricter, and more comprehensive test.

For example, there is an electronic component. A million on-off tests are required, and there are several more. It also needs to go through high temperature and low temperature tests, and there is another kind of performance testing in high humidity environment.

These tests and tests, Bai Lijie will do them one by one, it is estimated that this will take a relatively long process. Before these series of performance tests and performance tests are completed, the engine cannot be installed for verification testing.

Gu Qingguo's efficiency is really high, in the afternoon, the phone called again, Gu Qingguo said apologetically on the phone: "Mr. Li." As you expected, node 1257 has an error, which is not a major functional node, and we didn't detect it in the first place. ”

As he expected, Li Tianfeng was very happy that the root of the problem was found, and immediately said: "Mr. Gu, it's good that the problem is found, so you can produce a few more samples for us immediately, and we will use it urgently." ”

Gu Qingguo said: "Mr. Li, you don't need to say it, we will also produce a few samples as soon as possible and send them to you as soon as possible." ”

Li Tianfeng said: "Mr. Gu, then I will trouble you." ”

………

During this period of time, the scientific research and production of Tianfeng Technology Company have been carried out steadily, the design of the turbofan 20 engine has entered the final finishing work, and the design of the turbofan 16B engine has also progressed very fast.

Li Tianfeng did not interfere in the specific design of the turbofan 16B, but during the design process, Li Tianfeng will definitely take a look at it, and if problems are found, they will definitely be corrected.

However, the design team led by Sun Xiaoping performed well, even Li Tianfeng, who was also more satisfied, and the turbofan 16B was designed very well.

Turbofan 16B engine, after the design is completed, Li Tianfeng will definitely take a look again, do the final check, if there is no problem, it is the trial production of relevant parts, and then the installation, the verification test of the engine.

The design of the turbofan 16B engine is progressing well, and the development of the turbofan 20 engine has completed the trial production and testing of the first batch of parts.

The first to complete the trial production and test is the high-pressure turbine blade of the turbofan 20, and the finished product of several blades has been sent to Li Tianfeng's desk, and there is also a test report of the blade.

The high-pressure turbine blades of the turbofan 20 engine are highly similar to those of the turbofan 16 engine, but slightly smaller in size.

The third generation of single crystal blades, directional solidification molding technology, hollow blades, and a black-brown coating, which is a thermal barrier coating.

The blades are not big, but they are very exquisite, and at a glance they know that this is a fine product, Li Tianfeng took out a 5x magnifying glass from the drawer of his desk with great interest, wore white gloves, and looked at it carefully.

Under the magnifying glass, it can be seen more clearly, and the first thing Li Tianfeng looks at is the hundreds of tiny cooling holes on the blades.

There are a lot of pores, only the size of a hair, neat, the largest cooling pores have a pore diameter of no more than a millimeter, these cooling pores, don't look very small, but powerful, can not make a little mistake.

Turbofan 20 engine, the temperature before the turbine is 2100K, such a high temperature, ordinary steel has been melted, and the turbine disc and turbine blades have to work in such a high-temperature environment, output strong power, and withstand huge stress.

We know that when the temperature increases, the metal will soften, and once it softens, the strength of its metal will be greatly reduced, which is absolutely not allowed on an aero engine.

Can not let the parts soften, in such a high temperature environment, what to do, so in the design to take a lot of methods, thermal barrier coating is a method, another important method is the design of hollow blades.

The hollow blades, combined with a large number of cooling pores, form a protective air film on the surface of the blades, isolating the hot gas from the blades, so that the turbine blades can work safely in this high-temperature environment.

However, the cooling pores are very small, and if they are not properly designed or manufactured, these tiny pores are prone to carbon deposition and blockage, and once blocked, the cooling air film will weaken or fail, which is very dangerous.

All, the design of hollow turbine blades is a technical job, processing and manufacturing is also very important, Li Tianfeng knows that there will be no problem in the design of high-pressure turbine blades of the turbofan 20 engine, which has been verified by the turbofan 16 engine, and now it is necessary to look at the processing quality of these cooling holes.

Li Tianfeng took a magnifying glass and looked at these pores carefully, Li Tianfeng found that these pores were very beautifully processed, each hole did not have a single burr, and the aperture was also round, and there was no irregularity.

"It's well done." After looking at it, Li Tianfeng picked up the inspection and test report of the high-pressure turbine blade and looked at it seriously.

The size measurement data of the blade are all qualified, many are still medium difference, stress test, fatigue test, high temperature test, low cycle test, and a series of tests are also qualified.

After reading these, Li Tianfeng thought in his heart, this is a good start, and finally completed the trial production of the first batch of parts beautifully and smoothly.

Coincidentally, Liu Wei sent a few documents in for Li Tianfeng to sign, Liu Wei saw the blades on Li Tianfeng's desk, Liu Wei couldn't help but say: "Boss, this blade is so beautiful, so exquisite, which of our engines is the turbine blade." ”

After all, there is a big difference between turbine blades and compressor blades, but Liu Wei really doesn't know which turbine blade it is and which engine it belongs to.

Li Tianfeng smiled and said happily: "Mr. Liu, this is the high-pressure turbine blade of our turbofan 20 engine. ”

Liu Wei said in surprise: "Boss, the high-pressure turbine blades of the turbofan 20 engine have been successfully trial-produced?" ”

Li Tianfeng said: "The trial production of the first batch of blades has been completed, and in a few days, it is estimated that the remaining turbine blades, including our turbine discs at all levels, will also complete the first batch of trial production." ”

Liu Wei said: "Boss, the development of our turbofan 20 engine is progressing really fast." ”

Li Tianfeng nodded, and then said: "Mr. Liu, this time our turbofan 20 engine development is going so smoothly, everyone is indispensable, in this way, your administrative department took the lead, come up with a reward program, for the meritorious people who performed well in the development process of this engine, I want to reward them heavily!" ”

Make a big prize!

Liu Wei looked happy, and then said, "Boss, what is the approximate amount of this reward?" ”

Li Tianfeng thought for a moment, and then said: "10 meritorious figures will be selected, and each person will be rewarded with 500,000 yuan in cash; 20 outstanding figures, each with a reward of 300,000 yuan; There are 50 outstanding people, and each person will be rewarded with 100,000 yuan in cash. ”

Yes! What a prize!

……

Today's three watches, the second one will be sent.

On the first day of work, there are so many things, there were two meetings in the morning, the code word can only see the stitches, seize all the time, as soon as the meeting ends, the first thing is to hurry up the code word, race against time, because today to three more

(To be continued......)