Tianfeng Technology Company.

Li Tianfeng is more concerned about the production and manufacturing of the fourth and fifth prototypes. Of course, he also knows that the second and third and third prototypes produced by his company have successfully arrived at the Yunba Aircraft Manufacturing Factory, and also knows that the two engines have been installed with the Yunba K transport aircraft.

This Yun-BaK type transport aircraft is the first prototype of the Yun-BaK series, namely the first prototype, equipped with two turbofan 16 engines, and is about to be tested.

Li Tianfeng basically knows these things well. In the past few days, Zhang Haiping has spoken with Li Tianfeng every day, and in addition, Yunba Aircraft Manufacturing Factory has also called.

These two turbofan 16 engine verification machines will soon be held with the Y-BaK. Li Tianfeng doesn’t have to worry about these first flights. Li Tianfeng just needs to attend the first flight ceremony on time. Not only Li Tianfeng, but also many senior executives from Tianfeng Technology Company were invited to attend the Y-BaK’s first flight ceremony.

The parts processing and production of the fourth and fifth two prototypes of the Turbofan 16 have been fully started, and the processing progress of some parts is relatively fast, such as the first-stage compressor blades.

Because the first-stage compressor blades have some semi-finished blanks, the finishing process can be carried out. In the blade manufacturing workshop, these blades have begun finishing.

On a five-axis linked CNC milling machine, the blades are being processed. There are many semi-finished products in the parts box next to the machine tool, and some of them have completed blade-type CNC milling.

The semi-finished product is a titanium alloy forging, which forged the rough shape of the blade, retained a certain margin, and facilitated finishing. The first finishing process is the CNC milling of the blade, mainly milling the blade type.

The first-stage compressor blades of the turbofan 16 engine are the largest and longest among all these compressor blades. Of course, the largest and longest are just relative. Compared with the fan blades, it is a big deal.

The first-stage compressor blades also use low aspect ratio blades, i.e. wide string blades, because the compressor blades are much smaller than the fan blades, and the compressor blades use integral titanium alloy solid blades.

The compressor wide-string blade design. Compared with the narrow-string blade, it widens the string length, shortens the length of the compressor, improves the ability to resist external damage, fatigue resistance and stall margin. It can also reduce the number of compressor parts and reduce production and manufacturing costs.

This batch of first-stage compressor blades has dozens of pieces. Five-axis linked CNC milling is underway. The production and manufacturing process of compressor blades has been fully verified by process methods and process parameters.

On the work table next to this five-axis linked CNC milling machine, there is a process card for drying orchids instead of a white paper process procedure. This shows that the production and manufacturing process of this compressor blade is mature and generally no major changes will be made. What needs to be done in the future is only to improve the process.

On the machine tool, a compressor blade is being processed, with milky white coolant splashing everywhere, and you can see clearly through the glass safety door.

A high-speed rotating alloy milling cutter is milling at high speed on the blades, and a large number of crushed titanium alloy metal chips are being milled from the blades.

Li Tianfeng happened to be in the blade workshop to check the processing conditions of each part, especially the processing conditions of each part of the turbofan 16 engine. He saw that this five-axis linked CNC milling machine was milling the blades of the first-stage compressor of the turbofan 16 at high speed. Li Tianfeng came over.

After a brief chat with the worker who operated the machine tool, Li Tianfeng asked about the basic processing situation, and then listened to the sound of the machine tool working and looked at the milled titanium alloy metal chips. Without looking at the parts, Li Tianfeng could basically judge that the processing was very normal.

After picking up a blade that has been milled and looking at the processing patterns on the blades, Li Tianfeng couldn't help but nod. The blade processing is very good.

At the same time, Li Tianfeng is familiar with the processing process of the compressor blades of the turbofan 16 engine, and the precision forging of titanium alloy blanks. This is considered a semi-finished product. Through CNC milling, the blades are basically formed by high-speed precision grinding of the blade through grinding the wedge-shaped dovehead.

Of course, this is just the main process, and there are many other processes. Starting from the forging of the blank, after more than twenty processes, the beautiful and exquisite compressor blades that fully meet the design requirements are finally processed.

Don’t look at the smooth and easy process now. When the compressor blades were tested and process verification was done, it took a lot of effort. After comparison, improvement, and improvement, the smooth and mature processing technology was now available.

When the process was verified, there were several sets of processing techniques for this kind of blade processing, such as the processing of blade tenons. At the beginning, the broaching and grinding were tested.

Through the experiment, the grinding process of blade tenons is better, the quality is higher, and the efficiency is relatively high, which is why the current blade tenon grinding process is achieved.

The same is true for the processing of leaf shapes. After testing and verifying many process methods, the blade fine forging blank was finally determined. First, it was through high-speed five-axis linkage milling, and then high-speed and high-precision grinding. The processed blades are of the best quality.

Li Tianfeng looked at the blades that had been milled with satisfaction and clicked a little bit. In Li Tianfeng's opinion, the processing quality of the blades is very good, the textures are beautiful and even, and there are no burrs. After being grinded by the blades with high precision and high speed, the blades will be more beautiful and more refined.

"Master Jiang, the blades are well processed."

After receiving praise from Li Tianfeng, Master Jiang, who operated the machine tool, smiled happily and said, "Mr. Li, I dare not take credit for the blade processing so well. The main reason is that our process methods and process parameters are very good. No matter who it is, as long as we operate strictly in accordance with the process requirements, we can also process such high-quality blades."

Upon hearing this, Li Tianfeng was satisfied with it. He has been promoting process standardization and strict process discipline management since the establishment of Tianfeng Technology Company for so long, and now it seems that he has achieved initial results.

The processing technology of each part is mature and reasonable, has strong operability, and has clear process steps. No matter which worker it is replaced, as long as it operates according to the process, the processed parts will be the same.

Li Tianfeng looked at several blades that had been milled with satisfaction, and the quality was good. Then he looked at the inspection records on the table. The blades were all in a perfectly qualified size and technical conditions, and many of them were of medium size. Li Tianfeng was even more satisfied.

The processing quality of each part is excellent, and the design of the turbofan 16 engine is already good, Li Tianfeng is full of confidence.

After a long look at the blade processing workshop, I originally wanted to go to the precision casting workshop to take a look, but after looking at the time, it was almost time to get off work, so Li Tianfeng had to give up.

"I will set off for the first flight of Yunbak tomorrow." Li Tianfeng thought so in his mind and walked out of the blade processing workshop.

I have looked around in each workshop these days, especially after watching the processing of the parts of the turbofan 16 engine. Li Tianfeng estimated that it should take less than a month to complete his two prototypes.

………

Northwest, a test airport.

The Yunbak plane was parked there quietly. In the distance, the sun rose. Under the golden sunlight, the Yunbak seemed to be covered with a mysterious color.

Today, the plane will undergo its first test flight.

At 8 o'clock in the morning, there were already many people at the airport, some technicians and inspectors from the aircraft manufacturing plant, who were conducting final inspections of the aircraft.

Li Tianfeng, Sun Xiaoping and Zeng Qinghai have arrived at the airport. Everyone was invited to watch the first flight of the Yunbak. Xu Lilong and Sun Kang stayed behind to take charge of the company. Because the production and manufacturing of various parts of the turbofan 16 engine were fully launched, they were inseparable from the two, especially Sun Kang.

As soon as he arrived at the airport, Li Tianfeng got off the bus and saw the Yunbak in the distance. This was the first time Li Tianfeng saw the Yunbak. The last time Li Tianfeng went to the Yunbak aircraft manufacturing factory, the transport plane he saw was still a semi-finished product at that time and had not been completed.

Li Tianfeng was about to take everyone to take a close look at the plane, but saw several military off-road vehicles coming from afar. They stopped not far in front of Li Tianfeng and others, and got out of the car.

There are naturally many soldiers, such as colonels, and at least a dozen people. Among these school officials, there are several generals, and the star of the general shines. The highest rank is actually a lieutenant general. It can be seen that the military attaches great importance to the test flight of the Yunbak.

Among these soldiers, Li Tianfeng saw an old acquaintance, Zhang Haiping, who was wearing a major general uniform, next to the lieutenant general. The two seemed to be talking about something. While talking, they also looked at Li Tianfeng.

Seeing this, Li Tianfeng walked over quickly, and Li Tianfeng said loudly: "Director Zhang!"

When Zhang Haiping saw Li Tianfeng, he immediately took two steps forward and said enthusiastically: "Mr. Li, this is Minister Liu, Minister Liu of our General Equipment Department, and this is Mr. Li Tianfeng, General Manager of Tianfeng Technology Company that I mentioned to you."

Minister Liu had thick eyebrows and big eyes, a national face, tall and burly figure, and a soldier's temperament and style were fully revealed. Li Tianfeng quickly stepped forward.

I didn't expect that he was a lieutenant general in the assembly. Although Zhang Haiping did not introduce the specific position, Li Tianfeng knew that Minister Liu was either a deputy minister or a minister of a second-level department under the assembly.

Li Tianfeng and Minister Liu shook hands, and said a few polite words. Minister Liu said: "Mr. Li, you are amazing. I have heard the most about the turbofan 16 engine and the Y-8K transport aircraft in recent times."

Li Tianfeng said politely: "I want to thank the military, otherwise, our turbofan 16 engine development will not be so smooth. In terms of engine design and shaping, the military has helped us a lot, almost all the way."

Minister Liu said: "We can take care of such a good engine, so we need to take care of it. Let's go and take a look at the turbofan 16 and the Yunbak."

…………

Today's third update, the first update is here! (To be continued.) h211
Chapter completed!