Tianfeng Technology Company.

Li Tianfeng is more concerned about the production and manufacturing of the fourth and fifth prototypes. Of course, he also knew that the second and third prototypes produced by his company had arrived at the Yun-8 aircraft factory, and he also knew that the two engines had been installed on the Yun-8K transport aircraft.

This Y-8K transport aircraft is the first prototype of the Y-8K series, that is, the first prototype, equipped with two turbofan 16 engines, and is about to make a test flight.

In the past few days, Zhang Haiping has been talking to Li Tianfeng on the phone every day, and in addition, the Yunba Aircraft Factory has also called over.

These two turbofan 16 engine demonstrators are about to make their first flight together with Yun-8K, these first flights, don't worry about Li Tianfeng, Li Tianfeng only needs to participate in the first flight ceremony on time, not only Li Tianfeng, but also a number of middle and high-level executives of Tianfeng Technology Company were invited to participate in the first flight ceremony of Yun-8K.

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

Because the first stage compressor blades have partially semi-finished blanks, they can be followed by finishing processes, which have already begun to be finished in the blade manufacturing workshop.

On a five-axis linkage CNC milling machine, the blades are being processed, and there are a lot of semi-finished products in the parts box next to the machine tool, and there are also some blades that have been completed with blade-shaped CNC milling.

The semi-finished product is a titanium alloy forging, forging out the approximate shape of the blade, retaining a certain margin, which is convenient for finishing, and the first finishing is the CNC milling of the blade, mainly milling the blade shape.

The first stage of the turbofan 16 engine is the first stage of compressor blades. It's the biggest, the longest blade, of course, it's only relative, and compared to the fan blades, it's a big deal.

The blades of the first-stage compressor are also blades with low aspect ratio, i.e., wide chord blades. Because compressor blades are much smaller than fan blades, compressor blades are made of solid titanium alloy blades.

Compared with the narrow chord blade, the compressor widened chord length is shortened, and the resistance to foreign object damage, fatigue resistance and stall margin are improved. It can also reduce the number of compressor parts, reducing production and manufacturing costs.

This batch of first-stage compressor blades has dozens of pieces, and five-axis simultaneous CNC milling is underway. The manufacturing process of compressor blades has been fully verified. The process method, process parameters, has been fixed.

On the work table next to this five-axis linkage CNC milling machine, there is a process card of sunning, instead of the process specification of white paper, which shows that the production and manufacturing process of this compressor blade has matured and will not be changed in general. In the future, all we need to do is to improve the process.

On the machine, a compressor blade is being processed. The milky white coolant, splashing water, can be seen clearly through the glass security door.

The high-speed rotating alloy milling cutter is milling at high speed on the blade, and a large number of small "C" type titanium alloy chips are being milled from the blade.

Li Tianfeng happened to be in the blade workshop to take a look at the processing of each part. Especially the processing of various parts of the turbofan 16 engine, seeing that the five-axis linkage CNC milling machine was milling the blades of the first stage compressor of the turbofan 16 at high speed, Li Tianfeng walked over.

After chatting with the workers who operated the machine tool and asking about the basic processing situation, Li Tianfeng listened to the sound of the machine tool work. Take a look at the milled titanium alloy metal chips, without looking at the parts, Li Tianfeng can basically judge that the processing is very normal.

Picking up a blade that has been milled again, and looking at the processing lines on the blade, Li Tianfeng couldn't help but nodded, the blade processing is very good.

At the same time, Li Tianfeng is familiar with the processing process of turbofan 16 engine compressor blades, titanium alloy precision forging blanks, which is considered semi-finished products, through guò CNC milling, high-speed precision grinding of blade shapes, and the blades are basically formed when grinding wedge-shaped tenons.

Of course, this is only the main process, and there are many other processes, starting from forging the blank, after more than 20 processes, and finally processing a beautiful and delicate compressor blade that fully meets the design requirements.

Don't look at the processing so smoothly now, so smooth, at the beginning of the trial production of compressor blades, when the process is verified, it takes a lot of time, after comparison, improvement, and improvement, there is now such a smooth, such a mature processing technology.

At the beginning of the process verification, the processing of this blade, there are several sets of processing technology, such as the processing of the blade tenon, the broaching process was tested, and the grinding process was also tested.

Through the guò test, the grinding effect of the blade tenon is better, the quality is higher, and the efficiency is relatively high, so there is the current grinding process of the blade tenon.

The processing of the blade shape is the same, the initial test and verification of many kinds of process methods, and finally determine the blade precision forging blank, first after high-speed five-axis linkage milling, and then after high-speed and high-precision grinding, the quality of the processed blade is the best.

Li Tianfeng looked at the blades that have been milled with satisfaction, a little bit, in Li Tianfeng's view, the processing quality of the blades is very good, the texture is beautiful and uniform, there are no burrs, and then after the high-precision and high-speed grinding of the blades, the blades will be more beautiful and more exquisite.

"Master Jiang, the blades are well processed."

Got Li Tianfeng's praise, Master Jiang, who operated this machine tool, smiled happily, and then said: "Mr. Li, the blade processing is so good, I don't dare to take credit, mainly because our process methods and process parameters are very good, no matter who it is, as long as it is operated in strict accordance with the process requirements, such a high-quality blade can also be processed." ”

Hearing this, Li Tianfeng was satisfied, for so long, since the establishment of Tianfeng Technology Company, he has been implementing process standardization and strict process discipline management, and now it seems that he has received initial results.

The processing technology of each part is mature and reasonable, the operability is strong, the process steps are clear, no matter which worker is replaced, as long as the process is operated, the processed parts are the same.

Li Tianfeng looked at several blades that had completed the milling process with satisfaction, the quality was good, and then looked at the inspection records on the table, the dimensions and technical conditions of the blades were fully qualified, and many sizes were poor, Li Tianfeng was more satisfied.

The processing quality of each part is excellent, and the turbofan 16 engine is designed well, Li Tianfeng is full of confidence.

After a big look in the blade processing workshop, I originally wanted to go to the precision casting workshop to have a look, but after looking at the time, it was basically close to getting off work, so Li Tianfeng had to give up.

"I'm going to leave tomorrow to participate in the first flight of Yun-8K." Li Tianfeng thought so in his heart, and walked out of the blade processing workshop.

In the past few days, I have looked around in various workshops, especially focusing on the processing of various parts of the turbofan 16 engine, Li Tianfeng estimated in his heart that it should not take more than a month for his two prototypes to enter the assembly.

………

Northwest, a test airfield.

The Yun-8K plane was quietly parked there, and in the distance, the morning sun rose, and under the golden morning sun, this Yun-8K seemed to be covered with a layer of mystery.

Today, the aircraft will make its first test flight.

At eight o'clock in the morning, there were already quite a few people at the airport, some technicians of the aircraft factory, inspectors, were conducting the final inspection of the aircraft.

Li Tianfeng, Sun Xiaoping, Zeng Qinghai has come to the airport, everyone was invited to watch the first flight of the Yun-8K, Xu Lilong and Sun Kang stayed in the company, because the production and manufacturing of various parts of the turbofan 16 engine are fully rolled out, and they are inseparable from the two, especially Sun Kang.

As soon as he arrived at the airport, he got off the car, Li Tianfeng saw the Yun-8K in the distance, this was the first time Li Tianfeng saw the Yun-8K, the last time Li Tianfeng went to the Yun-8K aircraft factory, he saw this transport plane, which was still a semi-finished product and was not completed.

Li Tianfeng was about to take everyone to take a closer look at the plane, when he saw several military off-road vehicles driving over in the distance, stopping not far in front of Li Tianfeng and the others, and a large group of people got out of the car.

There are a lot of colonels and colonels, at least a dozen of them, and among these school officers, there are several generals, and the stars are shining, and the highest military rank is actually a lieutenant general.

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

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 of our General Armament Department, Minister Liu, this is Mr. Li Tianfeng, General Manager of Tianfeng Technology Company, which I told you." ”

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

I didn't think it was a lieutenant general of the General Assembly, although Zhang Haiping did not introduce the specific position, but Li Tianfeng knew that Minister Liu was not a certain deputy minister, or the head of a certain second-level department under the General Assembly.

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

Li Tianfeng said politely: "I want to thank the military, otherwise, the development of our turbofan 16 engine is not so smooth, in terms of engine design and finalization, the military has helped us a lot, almost all the way to the green light." ”

Minister Liu said: "Such a good engine, we can naturally take care of it, let's take a look, let's take a look at the turbofan 16 and Yunba K." ”

…………

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