When the time passed to the spring of 2013, Tianfeng Technology's first turbofan engine, that is, the "TFWS001" turbofan engine, really began to enter the final assembly.

Why is it the first turbofan engine that is really assembled, because the two engines that participated in the air show in November last year were only exhibitors, and they did not meet the real requirements, and such two engines could not be tested.

Before talking about these things about the final assembly of the engine, I have to say a few more important things.

On New Year's Day, Li Tianfeng and Wang Ruobing got married, the wedding was held in the capital, the status of the Wang family determined that the wedding could not be very public, but the specifications were very high, the famous hotel in the capital, the children of the Wang family and many senior officials of the royal family attended the wedding.

In addition, almost all of the giants who can only be seen in the news attended Li Tianfeng's wedding, and even if they didn't come, they asked their families to come to attend.

In addition to the wedding, Tianfeng Technology Company has also done several big things, the first is that the second phase of the project construction has been completely completed, Tianfeng Technology Company has a factory area of more than 2,000 acres, and an area of more than 10,000 square meters of modern high-end factories 20 or 30.

These 20 or 30 huge workshops, including more than 20 mechanical processing plants, in addition to the main factory workshop, the first and second workshop workshops and so on.

Part of the new plant of the second phase of the project has been put into use, and part of the equipment is being installed and commissioned, and it is estimated that all of them will be put into use within one or two.

At the spring talent recruitment fair, Tianfeng Technology Company recruited a group of new employees, mainly skilled workers, in addition to a small number of technicians and management personnel.

The construction of the ground test platform has been fully completed, and the commissioning results are very good, as long as there is an engine. The test run will be available immediately.

In addition, preparations for the construction of the high-altitude platform have been started, under the "guidance" of Li Tianfeng. Sun Xiaoping made a technical plan for the construction of a high-altitude platform, which Li Tianfeng has already read and is currently revising, after revising and perfecting. It will be a rigorous program demonstration.

The "TFWS001" type is a turbofan machine with a thrust level of 50,000 pounds, and the comprehensive process verification has been basically completed.

In the whole verification process, many problems were naturally found, and the processing technology specifications of many parts have been overhauled or improved many times, and the process has gradually become perfect and reasonable, and the processing quality of parts is getting better and better.

Of course. After processing so many batches of parts, some problems have been found in the design, and some appropriate improvements and perfections have been made in the design.

The "TFWS002" model, a turbofan with a thrust rating of 20,000 pounds, has been fully designed at night, and has also begun to enter the stage of comprehensive trial processing of parts and process verification of parts.

In this engine, the core part is common to the "TFWS001" engine, so the design workload is much smaller. You don't have to redesign the core, or not. There won't be such rapid progress.

It is worth mentioning that the design of another turbofan engine from Tianfeng Technology has also begun, which is a turbofan engine with a thrust of 10,000 pounds.

Naturally, this is also a turbofan engine with excellent overall performance, undoubtedly a fourth-generation machine, with a thrust of 7,500 pounds to 12,000 pounds. It can be used as a power for 30 to 50-seat regional airliners.

This turbine engine, Tianfeng Technology's internal model is the "TFWS003" turbofan engine, because it is positioned in the power of 30 to 50 seat regional airliners, and the design fully considers economy and comfort. safety, reliability, and exhaust emission standards, among other things.

If this turbofan engine is successfully developed, Tianfeng Technology Company will have three turbofan engines, with thrust levels of 10,000 pounds, 20,000 pounds, and 50,000 pounds.

In this way, the coverage is wider and more competitive in the market. Embraer made it clear that as long as Tianfeng Technology's "TFWS003" turbofan engine is successfully developed, it will immediately order in batches.

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Final assembly workshop.

Compared with a few months ago, the current assembly workshop has changed a lot, and half of the empty area has been basically utilized, and has become a turbofan engine parts assembly area and a complete engine assembly area.

The general assembly area of turbofan engines is relatively large, with a full 20 assembly benches and 10 assembly benches for "TFWS001" engines neatly arranged in rows. The "TFWS002" engine is also a neat ten final assembly benches.

The assembly of the parts and components of the "TFWS001" engine is underway, which is the preliminary process before the final assembly of the engine, and the assembly of the parts is completed and the components are formed one by one, and the final assembly of the engine can be carried out.

Fan assembly area.

The main assembly of fan parts is carried out here, a wide and beautiful fan blade is neatly placed on the table, the fan tray to be assembled has also been completely balanced, and the key position of quality has been marked on the fan tray.

The fan disc is made of titanium alloy, although it is not big, but it is very beautiful and exquisite, the fan blades will be installed on the fan disc one by one, and after being assembled into a fan tray, the fan shaft will be installed, which constitutes the most important part of the fan part - the fan rotor.

Several assembly workers, one of whom was a little older, looked to be in his forties, should be the squad leader of the fan parts assembly team, and was leading everyone to the assembly work.

The assembly process card has been placed, and everyone assembles in strict accordance with the assembly process regulations. One of the younger assemblers is weighing the fan blades one by one, weighing each blade one by one and keeping a record of each one.

The young man weighed and said, "Master, our fan blades are really beautiful and lightweight. ”

It turned out that this young man was the apprentice of the leader of the fan parts assembly class, and the middle-aged worker said: "That's for sure, this is a titanium alloy wide-chord hollow blade, don't look at it as hollow, the weight is relatively light, but the strength is very high, don't underestimate these blades." ”

Although the middle-aged master was talking in his mouth, the kung fu in his hands did not stop, and his movements were very skillful.

The weight of the blade is weighed, and then according to the weight requirements, one by one into the tenon groove of the fan plate, after the blade is installed, the swing of each blade is measured, the swing of this blade has strict requirements, if not, the blade needs to be replaced.

After installing the blades, measuring the swing amount, installing the fan shaft, including some accessories, the entire fan rotor is assembled, and the middle-aged master instructed the workers to begin to check the technical requirements of the fan rotor, such as shaft degree, runout and so on.

These works are only a few dozen words in the text description, but everyone has been pretending for almost half a day, and there can be no sloppiness in a single qiē, and a qiē must be strictly in accordance with the requirements.

"Master, I didn't expect it to be in place at one time, and all the technical requirements are qualified!"

"Yes, even this beating with only two threads is qualified, and the watch is less than a trace, which is perfect."

The middle-aged master smiled and said: "This is because the processing quality of our parts is good, otherwise, we may toss for a day or two, however, the fan rotor is installed, but there is still a process that is qualified to be truly qualified." ”

"Master, do you mean the dynamic balance of the fan rotor?"

"Yes, it's balance."

Everyone obviously knows the importance of dynamic balance, and also knows that dynamic balance is very strict, and there is really no bottom in their hearts, and they don't know if they can pass the dynamic balance.

The so-called dynamic balancing is to detect whether the mass distribution of the fan rotor relative to the rotating central axis is balanced under a certain speed, if the mass distribution is unbalanced and does not meet the specified requirements, the dynamic balance is unqualified.

The worse the dynamic balance, the greater the vibration and the greater the noise when the fan rotor rotates, on the contrary, if the dynamic balance is good, the fan rotor will be very stable even if it rotates at high speed, and the noise will be relatively small.

Tianfeng Technology's turbofan engine fully considers comfort, and the first principle of comfort is that the engine works smoothly, with low vibration and low noise.

"Master, the dynamic balance requirements of this fan rotor are very high!"

"Yes, the requirements are so high, if you don't qualify, it will be miserable."

Seeing that everyone basically had little confidence, the middle-aged master waved his hand and said, "No matter what, let's move the balance first." ”

As a result, the fan rotor that has just been assembled is pushed to the dynamic balance area, and the rotating parts of the engine, such as fans, compressors, turbines, etc., must be strictly dynamically balanced, so the assembly workshop has a special dynamic balance area, and the area is not small.

"Lao Yan, will the assembly be completed?"

"Lao Zhao, the assembly has just been completed, and the inspections have been qualified, please help me carry out the dynamic balance inspection."

Zhao Yi, the elder of the dynamic balancing squad, smiled and said happily: "No problem, our imported dynamic balancing machine has not yet opened, you are the first." ”

This is an imported large-scale horizontal dynamic balancing machine, and it is also a high-precision dynamic balancing machine, which was specially imported for the development of turbofan engines, and spent millions of oceans.

Lao Yan of the fan assembly class smiled and said, "Lao Zhao, then it's troublesome." ”

Lao Zhao nodded, and then instructed several skilled workers under his command to immediately carry out dynamic balancing on the fan rotor, which was installed on the dynamic balancing machine, and after alignment, it was ready to start dynamic balancing.

As the leader of the dynamic balancing class, Lao Zhao has rich experience and knows that the larger the parts, the more difficult the dynamic balancing, and the more difficult it is to meet the strict requirements.

The diameter of this fan rotor is not small, but in terms of diameter, it is only smaller than the fan casing, which is the second largest part.

So, Lao Zhao said: "Lao Yan, you have to be mentally prepared, such a large fan rotor, and the dynamic balance requirements are so strict, it may be difficult to qualify." ”

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