After the Spring Festival, in the new year, it is still cold outside, and the temperature is a little chilly, but Tianfeng Technology Company has officially gone to work on the 16th day of the first month, and soon put into hot scientific research and production.

Since the completion of the comprehensive design of the turbofan 21 engine in November last year, and immediately entered the full trial production of parts, the trial production of each part has been carried out, and some parts with relatively simple and short processes have completed the first batch or the second batch of trial production.

Process technicians, according to the trial production situation, improve and improve the newly compiled processing process specification, so as to better process the next batch of parts, and after the process is improved, the processing verification of the next batch of parts is started.

In Li Tianfeng's mind, he focused on the trial production and process verification of various parts of the turbofan 21 engine, as well as the design of the turbofan 25 engine.

No, this morning, after Li Tianfeng watched the design progress of the turbofan 25 engine in the design and development center, he came to the workshops in the afternoon to take a look everywhere and take a look at the trial production and processing of the parts of the turbofan 21.

In the processing workshop of large disc parts, Li Tianfeng saw the processing of the turbine disc of the turbofan 21 engine, and in the turbo processing workshop, Li Tianfeng watched the processing of the compressor wheel disc.

The compressor design of the turbofan 21 engine, the blades and the compressor wheel disc are integrated, and Li Tianfeng looked at the processing of the compressor impeller discs at all levels.

The impeller disc is not large, more than 200 millimeters in diameter, the quality is relatively light, the compressor impeller disc at all levels is processed on the machine tool, Li Tianfeng walked to a large five-axis linkage CNC machining center, this machining center is processing the first stage of the impeller disc.

The blades of the first stage impeller disc are the longest, one by one, wide chord blades, which are being milled on a machining center.

On the work table next to the machining center, there is a thick book. A3 size processing process regulations, this is a blank paper process regulations, process regulations, has been processed each process, densely written, scribbled and changed. Wrote a lot of things.

The subsequent processes that have not been processed are clean and very tidy, because the parts have not been processed to these processes, and the process technicians have not found and recorded some problems in the processing, and the process regulations are of course clean.

There are two first-stage compressor impellers in this batch, and the process of the first part has been processed, Li Tianfeng picked up this impeller disc, an impeller disc with a diameter of more than 200 millimeters. It is very lightweight, and the density of the material appears to be relatively small, because the material grade is "DLS001".

Looking at this part, it seems to be not bad, there are only a few small problems, there is a competent process technician next to it, seeing Li Tianfeng, the competent technician immediately told Li Tianfeng about the processing situation one by one.

Li Tianfeng nodded. The heart understands that according to this situation. After processing one or two batches and constantly improving and improving, the processing technology will gradually stabilize and mature.

In the impeller parts processing workshop, Li Tianfeng saw the trial production and processing of many turbofan 21 engine parts, and in this workshop, Li Tianfeng stayed for a long time.

Take a look at the time. There was still a period of time before he got off work in the afternoon, and Li Tianfeng walked into the large casing processing workshop again.

Li Tianfeng walked straight to the fan casing that he was more concerned about, a total of three fan casings, which were being processed on a large precision machining center.

These three fan casings are cast in the precision casting workshop. Li Tianfeng has seen it, after completing the precision casting and passing the inspection, the three casings are sent to the large casing processing workshop for follow-up precision machining.

Li Tianfeng saw that the casing was drilling on the machine tool, the alloy drill bit rotated at high speed, and with a soft sound of "hiss", it was easy to drill into the casing, and it didn't take long to exit, and a hole was processed.

"Mr. Li!"

"Mr. Li is good!"

Next to the machine tool, an operator, two process technicians, everyone saw Li Tianfeng and said hello.

Li Tianfeng smiled and nodded, and then asked, "How is the processing?" What are the difficulties? ”

One of the process technicians, in his early thirties, with glasses, should be the technician in charge of the fan casing, and the process supervisor said: "Mr. Li, in general, the processing is relatively smooth, but there are some problems. ”

"Mr. Li, you look at the processing of these holes, because the drilling of "Hercules" material and metal materials are very different, at the beginning, we treat it according to the way of processing metal materials, resulting in poor chip removal of drilling holes, now, we change to the center of the cooled alloy drill bit, the coolant is sprayed out from the center of the drill bit at high pressure, not only the cooling effect is good, but also the drilling is sprayed together, and the processing is much smoother. ”

Another process technician said: "Mr. Li, not only these, on the fan casing, there are a lot of threaded holes, need to be threaded processing, we started, the method of manual tapping, but the effect is relatively poor, later, we use a special boring cutter, the preparation of CNC programs, changed to CNC machining threads, the processing effect and quality are much better." ”

“……”

Li Tianfeng listened patiently for a long time, and listened to a series of processing problems fed back by the two, Li Tianfeng said: "The development of the new engine is a process of exploration and continuous improvement and accumulation for us, like the processing of this fan casing, we encounter problems, and then solve the problem, which is very good, after processing a few batches, I believe that the processing quality of the parts will get better and better." ”

"Turbofan 21 engine, as the world's most advanced and outstanding regional airliner engine, the successful development of this engine is inseparable from everyone's joint efforts, everyone work hard, when this engine is successfully developed, I will reward everyone."

The two nodded together and said in unison: "Mr. Li, don't worry, we will work hard, such a world's most advanced regional airliner engine, we are very happy to be able to contribute to this engine, and we are also very happy and have a sense of achievement." ”

Li Tianfeng nodded, and encouraged the two of them a few more words, and then next to this machining center, he watched the processing of the fan casing, and saw the end of work.

Even, when this fan casing was processed and disassembled from the machine tool, Li Tianfeng was still in high spirits and measured it himself.

This fan casing processing, in general, Li Tianfeng is more satisfied, although there are many problems, and these holes are also unqualified, but this is the processing of the first batch of fan casings, there is a little problem, completely acceptable.

Einstein also did three small benches, the processing of fan casings, although complex and difficult to process, but Li Tianfeng also believes that it will get better and better, and the processing quality of one batch will be better than that of the previous batch.

………

Capital.

Zhang Haiping is in Mr. Wei's office, reporting to Mr. Wei on the progress of the development of the UAV, but judging from Zhang Haiping's expression, the development progress is definitely not ideal.

Zhang Haiping said: "Chief, you criticize me, since the development of the UAV project, there are more and more technical problems, and I am worried that the project will not be completed as required." ”

From Mr. Wei's heart, he very much hopes to have an advanced drone, and now facing such a predicament, Mr. Wei looks solemn.

After a little silence, Mr. Wei said: "Minister Zhang, look, do you want Tianfeng Technology Company to give it a try?" ”

Zhang Haiping thought for a while and said: "Mr. Wei, at present, Tianfeng Technology Company is carrying out the development of turbofan 21 engine and turbofan 25 engine at the same time, and the pressure on scientific research must be very large. ”

"That's it!" After pondering for a while, Mr. Wei said: "Minister Zhang, you communicate with Tianfeng Technology Company, if Tianfeng Technology Company is sure to win this drone project, then this project will be suspended, we will wait for a while, and then let Tianfeng Technology Company undertake the research and development of this project." ”

Zhang Haiping said: "Chief, I see it's okay, I'll communicate with Tianfeng Technology Company first, and then report to you." ”

Mr. Wei nodded, and then said: "Minister Zhang, what happened to the development progress of our turbofan 25 engine?" ”

Mr. Wei is very concerned about this project, and since learning that the turbofan 25 engine under development will be the most advanced and outstanding small-band ratio turbofan engine in the world, Mr. Wei has been very concerned about this project.

Zhang Haiping said: "Chief, I was about to report to you, turbofan 25 engine"

Zhang Haiping is naturally very clear about the development progress of the turbofan 25 engine, because Zhang Haiping often talks with Li Tianfeng on the phone and often asks about the development of this engine, so Zhang Haiping makes a detailed report on the development progress of the turbofan 25 engine.

Mr. Wei said with satisfaction: "Yes, yes, Tianfeng Technology Company is really not comparable to ordinary aviation industry enterprises, Minister Zhang, it seems that it will not be long before we will have the world's best military turbofan engine!" ”

Zhang Haiping said: "Chief, there should be no problem with this!" ”

………

Li Tianfeng didn't think about it, Zhang Haiping personally ran to Tianfeng Technology Company, and it was still about the development of drones.

Zhang Haiping not only came over in person, but also brought the design and technical outline of this drone, and in Li Tianfeng's office, the two were discussing this drone.

This is the military's first development, the most advanced UAV in the military, Li Tianfeng carefully and carefully looked at a series of technical and performance requirements of this UAV.

Then, Li Tianfeng said: "Minister Zhang, such a UAV, I think it is very advanced, if it is successfully developed, although there is still a certain gap with the United States' Global Hawk, but the gap is limited, according to our current domestic aviation industry level, of course, it is difficult to develop." ”

Zhang Haiping said tentatively: "Mr. Li, if you are asked to develop it, won't it work?" ”

………

Today's three watches, the first one is sent! (To be continued......)