After Li Tianfeng thought about it, he frowned and said: "Brother-in-law, we must assemble these two turbofan 16 prototypes immediately, because after our engines are installed, they will be loaded on the plane for test flights, and it is not cost-effective to wait for these three parts for half a month." ”

Sun Kang said: "Tianfeng, what should I do?" Don't say that there are three parts less, even one less part can't assemble an engine. ”

Li Tianfeng said: "Brother-in-law, first issue the production task to the final assembly workshop, let's assemble the first turbofan 16 engine first, as for the assembly of the second engine, let me think about it again." ”

Sun Kang nodded.

Li Tianfeng returned to his office with a frown, sat at his desk, racking his brains to think about these three parts.

The key is the lack of these two turbine guide vanes, which are stationary vanes that guide the air flow and are mounted on the turbine casing, which are also very critical blades.

The turbo guide vane of the turbofan 16 engine is also an ultra-cold structure design, the third generation of single crystal hollow blades, with a very complex blade shape and inner cavity structure, the manufacturing process is relatively complex, and the normal production schedule requires about 45 days of production cycle from feeding to manufacturing of finished products.

As for the lack of a compressor spacer ring and a lack of a turbine bolt, this is not a big problem, even if it is re-fed for production, it only takes five days, and five days can still afford to wait.

After thinking about it for a long time, Li Tianfeng suddenly had a flash of inspiration in his head, and remembered that there were two such turbine guide blades in the metallographic analysis room, but because the size was slightly unqualified, they were used for metallographic analysis, but he didn't know if these two blades were still there.

Thinking of this, Li Tianfeng immediately picked up the phone on his desk......

……

Metallographic analysis room.

With the "TFWS002" turbofan engine fully entering the stage of trial production of parts, there are many types of parts that need to be subjected to metallographic inspection. The metallographic analysis room is also busy.

As the director of the office, Yang Jinquan is also very busy at work, and sometimes, when he is busy, he forgets a lot of things, and now, he has just finished the metallographic analysis of a certain part. Taking advantage of the gap between taking a sip of tea, I suddenly remembered something.

Last time, two turbofan 16 turbine guide vanes were sent over for metallographic analysis of the metal material of the blades, and these two blades were manufactured according to the latest process after another refinement and improvement.

After the process is perfected and improved, several batches of turbine guide vanes have been produced and manufactured, and each batch of turbine guide vanes is manufactured, and the manufacturing process should be improved and improved accordingly.

Yang Jinquan clearly remembers that the turbine guide vanes sent over last time were manufactured after the fifth process was perfected. I heard that the manufacturing process has been continuously perfected and improved five times, the manufacturing process of this batch of blades has been very perfect, the quality is very stable, a batch of dozens of turbine guide blades, only two pieces of size is slightly unqualified, these two turbine guide blades are sent over for metallographic analysis of blade material.

Because of the continuous trial production of parts, the process is also constantly improving, before the process is not quite perfect and improved. The number of turbine guide vanes produced in each batch is not large, and the smallest batch is only a few pieces. The most recent production batch was the largest, with dozens of pieces.

A turbofan 16 engine needs dozens of turbine guide vanes, so although five batches have been manufactured, excluding the unqualified ones, the remaining turbine guide vanes are only enough to install two turbofan 16 engines. The assembly of the third turbofan-16 engine was still two pieces of this turbine guide vane.

In the first few batches, the metallographic inspection of the turbine guide blades sent over each time was qualified, so Yang Jinquan arranged for his subordinate Xiao Liu to conduct the inspection, and he did not do it himself.

"Oops, I almost forgot about it. I don't know if Xiao Liu has finished checking. Thinking of this, Yang Jinquan patted his head gently, "If there is no inspection, this will delay the big thing." ”

Thinking of this in his heart, Yang Jinquan immediately stood up, stopped drinking the tea, and shouted loudly: "Xiao Liu, Xiao Liu, come over here." ”

Hearing his director shouting to himself, Xiao Liu immediately came over: "Director Yang, you are looking for me." ”

Yang Jinquan nodded and said, "Xiao Liu, what are the results of the metallographic inspection of the two turbofan 16 engine turbine guide blades sent over last time?" ”

Hearing this, Xiao Liu hesitated for a while, his face was a little red, and he looked embarrassed, as if he had made a mistake.

Seeing this, Yang Jinquan knew that things must not be good, and immediately asked in a deep voice: "Xiao Liu, you answer me honestly, haven't you carried out a metallographic inspection yet?" ”

Xiao Liu blushed, lowered his head and said: "Director Yang, I reviewed, I forgot about this matter, there are many parts that need to be metallographically inspected recently, and I haven't done metallographic inspection on these two turbine guide blades." ”

Yang Jinquan said: "Xiao Liu, you, you, this is going to be a big thing, you must know that our turbofan 16 engine has completed 300 hours of long-term testing, in case the turbine guide blade metallographic inspection is unqualified, then how to get it." ”

Xiao Liu said in a low voice: "Director Yang, all the turbine guide blades installed in the first prototype of our test run have been metallographically inspected in each batch, and the inspection results are all qualified, and they should be ......."

Yang Jinquan waved his hand to Xiao Liu: "Xiao Liu, you must always remember that we are engaged in the aero engine business, and we must not be sloppy, and all the turbine guide blades of the first prototype are metallographically inspected in each batch, which is true, but recently this batch of turbine blades has not been metallographically inspected, what if dozens of guide vanes produced in this batch are installed." ”

Yang Jinquan could also realize that his tone was a little heavier, paused slightly, and then said seriously: "Xiao Liu, hurry up and conduct metallographic analysis and inspection of these two turbine guide blades, and form a report as much as possible, go quickly." ”

Xiao Liu hurriedly nodded and agreed, and immediately went to inspect the two turbine guide blades, the first step of metallographic inspection, generally need to take samples, take part of the metal material from the blade to organize it, and make a sample for inspection.

Once sampling, the two turbine guide vanes are scrapped and can no longer be used for engine assembly, because the turbine guide vanes have been removed from a piece of metal material structure, and the blade is missing a piece and must no longer be used.

Watching Xiao Liu quickly go to the metallographic analysis and inspection of the turbine guide blades, Yang Jinquan thought in his heart, Bodhisattva bless, the inspection results must be qualified, and there must be no problems.

If the results of the inspection are not satisfactory, and the inspection is scheduled so long after the leaves have been delivered, Yang Jinquan may also be criticized.

Thinking about this, Yang Jinquan heard the office phone in his metallographic analysis room ring urgently, Yang Jinquan picked up the phone, "Hello, may I ask who you are?" ”

"I'm Li Tianfeng, have the two turbine guide vanes of turbine 16 been metallographically inspected?"

"Oh, my mother!" Yang Jinquan was so frightened that he almost didn't hold the phone in his hand, this was a call from Mr. Li, and he asked about the metallographic inspection of the turbine guide blades.

Yang Jinquan was so frightened that the sweat on his forehead almost came out, and he immediately said in fright: "Mr. Li, I'm sorry, there was a mistake in my work, the metallographic inspection of these two turbine guide blades was missed, and now I am preparing to carry out metallographic analysis and inspection." ”

Li Tianfeng said in surprise: "Director Yang, does that mean that the metallographic inspection has not been carried out yet?" ”

Yang Jinquan was worried about being criticized in his heart, where did he notice the change in Li Tianfeng's tone, and hurriedly said: "Mr. Li, I will personally check it immediately, and there will be the results of the inspection soon, and I will report to you then." ”

Li Tianfeng hurriedly said: "Director Yang, stop, stop, stop quickly, I have urgent use for these two turbine guide blades, don't check them." ”

What, don't check! Yang Jinquan felt that he couldn't react at all.

Li Tianfeng said: "Yes, stop quickly, to ensure that these two turbine guide blades are intact, they must be intact." ”

Yang Jinquan finally reacted, and finally knew what Li Tianfeng meant, and saw Xiao Liu from a distance preparing to sample one of the turbine guide blades, and immediately hurriedly shouted: "Xiao Liu, Xiao Liu, stop quickly, stop the metallographic inspection quickly." ”

Hearing the shout, Xiao Liu was also inexplicable, and looked at his director with a blank face, "Director Yang, are you saying that you don't conduct metallographic analysis and inspection on these two turbine guide blades." ”

Yang Jinquan hurriedly said: "Yes, yes, Xiao Liu, you put down your things and hurry over." ”

Seeing Xiao Liu coming over, Yang Jinquan quietly breathed a sigh of relief, and secretly said in his heart, it's so dangerous, as long as it is one more minute slower, no, as long as it is half a minute slower, these two turbine guide blades will not be saved.

Yang Jinquan said into the microphone: "Mr. Li, these two turbine guide blades are intact. ”

Hearing this, Li Tianfeng was very happy and praised: "Director Yang, it's great, by mistake, you actually saved these two blades, no matter what, I want to praise you." ”

Unexpectedly, he was praised, Yang Jinquan was also happy, and then listened carefully to some things explained by Li Tianfeng on the phone, ended the call, and put down the phone.

Yang Jinquan said: "Xiao Liu, yes, I didn't expect a little mistake in our work, but by mistake, we kept these two turbine guide blades, Xiao Liu, these two turbine guide blades, Li always has a lot of use." ”

Xiao Liu said: "Director Yang, do these two leaves need to be examined for metallographic analysis?" ”

Yang Jinquan said: "The metallographic analysis and inspection of the blade material still needs to be dripped, but the premise is that the blade is not damaged, under this premise, we must complete the metallographic analysis and inspection of these two turbine guide blades." ”

Xiao Liu said: "Director Yang, this, how to check this?" If you don't destroy the blades and don't take samples, you can't check them at all! ”

………

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