"Damn, it's half past nine!"

After waking up from sleep, Li Tianfeng looked at the time, it was already more than nine o'clock in the morning, and he couldn't help shaking his head, thinking in his heart, he really drank a little too much last night.

Hurriedly got up, washed up, and was about to rush to the company in a hurry, because today I promised Zhang Haiping to visit the company, and now the time is so late, where is Li Tianfeng not in a hurry, in addition, Li Tianfeng also knows that the environmental and safety joint inspection team is afraid that it has arrived at Tianfeng Technology, and at this time, I am afraid that the inspection is already being carried out.

Hurriedly went downstairs, ran to the restaurant to drink a cup of warm soy milk, picked up a big bun, and ate it as he walked.

Xiao Ping saw Li Tianfeng in such a hurry, and immediately said with concern: "Son, slow down, eat a little more and then leave." Last night was really, drinking so much, how did you get it when you messed up your body. ”

"Mom, it's too late, I have a lot of important things, and I have to hurry to the company." Li Tianfeng said loudly, while leaving the gate of the villa, starting the car, stepping on the accelerator, and quickly driving in the direction of Tianfeng Technology.

Li Tianfeng's parents had come to Songzhou more than a month ago, and they were reluctant to leave the town, but their son, daughter, and son-in-law were all in Songzhou.

In fact, there is no need to take care of it, Li Tianfeng was afraid that his parents would be tired, so he hired a middle-aged nanny to do housework and get some food, Li Jianjun and Xiao Ping were basically very idle. But his parents live with him, and Li Tianfeng can still feel a strong warmth.

Besides, Li Tianfeng, who drove hurriedly to Tianfeng Technology, and as soon as he sat down in the office, Liu Wei came in and reported: "Boss, the car that picked up Director Zhang Haiping has been dispatched, and in addition, the joint inspection team led by Tang Kaiyu, deputy director of the Municipal Environmental Protection Bureau, has arrived at the company and is inspecting, accompanied by Tan Yan and Minister Cai Bin." ”

Li Tianfeng took a sip of warm tea, and did not take the matter of the inspection team to heart, but said with a smile: "Mr. Liu, it seems that Zhang Haiping also drank high last night, and he hasn't gotten up yet." ”

Liu Wei said: "Boss, Director Zhang Haiping's amount of alcohol is really good, he almost drank a pound of liquor last night, a lot." ”

Li Tianfeng nodded, Zhang Haiping was really bold in drinking, thinking of the situation last night, he couldn't help but smile slightly, and then said: "Mr. Liu, Zhang Haiping has arrived to inform me, I will deal with a few things now." ”

"Okay." Liu Wei gently withdrew and gently closed the door of Li Tianfeng's office, while Li Tianfeng first processed a few papers, and then read a few test reports of the "TFWZ001" turboshaft engine.

Many engine parts have already been processed in the first batch. The first batch of parts, each drawing number is three or five pieces, mainly used for process verification, as well as various tests, design verification, performance verification, and even force analysis, or limit tests, etc.

A new aero engine, at the beginning of development, a large number of various tests and verifications are necessary, these parts have completed a large number of various tests and verifications, will be combined with these in the test and verification process found in a series of design problems, process problems to improve one by one.

After such improvement and perfection are completed, the second batch of parts is generally reprocessed, and if necessary, a second round of various tests and verifications are carried out to determine that there are basically no problems, and then the assembly of the first engine is carried out.

The first aero engine assembled is also the first demonstrator, and various test runs are required to verify the overall performance and so on. After the first verification machine, there may be a second and third verification machine, and after there is no problem with all kinds of verification, it is necessary to apply for a production license, design finalization, etc.

At present, the design work is basically completed, the first batch of processing of most parts has been completed, and the first round of comprehensive testing and verification of various parts has begun.

………

When Zhang Haiping arrived at Tianfeng Technology Company, it was already after half past ten in the morning, and the two met, Zhang Haiping said: "Mr. Li, I'm smiling, I got up a little late." ”

Li Tianfeng also smiled and said: "Where, where, I almost couldn't get up, and I just arrived at the company." ”

The two were in the reception room, and after a few words of greeting, Zhang Haiping said with great interest: "Mr. Li, if it is convenient now, take me to your processing site to have a look, and let me have a good understanding of your turboshaft engine." ”

Li Tianfeng said happily: "There is no problem, then let's go to the No. 1 workshop first." ”

So, under the leadership of Li Tianfeng, I first looked at the No. 1 workshop, the No. 2 workshop, and then went to the No. 3 workshop in the afternoon.

At noon, of course, Li Tianfeng warmly entertained Zhang Haiping, but neither of them drank anymore, and when they went to work in the afternoon, the two came to the No. 3 workshop together.

Generally speaking, seeing such advanced, modern, and large-scale workshops, Zhang Haiping was very interested, and his evaluation of Tianfeng Technology was also very high.

Now, walking into the No. 3 workshop, a professional blade processing workshop, and seeing a large number of advanced equipment, Zhang Haiping said with great feelings: "Mr. Li, if you don't come to see it in person, I really can't imagine that Tianfeng Technology will have such a process, such hardware facilities, and such a high-level management, I am full of confidence in your axle engine under development." ”

After receiving such an evaluation, Li Tianfeng was also in a good mood, and Li Tianfeng was also full of confidence in his first aero engine.

Walking into the No. 3 workshop, seeing the neat machine tools and equipment, and seeing the workers processing parts, Zhang Haiping walked to a CNC EDM machine tool with great interest.

Looking at the parts being processed, Zhang Haiping said: "Tianfeng, it seems that Pratt & Whitney Company has processed a lot of parts here." ”

In the No. 1 workshop and the No. 2 workshop, Zhang Haiping saw some parts of Pratt & Whitney Company that were being processed, and in the No. 3 workshop, he saw parts of Pratt & Whitney Company, so Zhang Haiping said.

The scale of cooperation between Tianfeng Technology and Pratt & Whitney is very large, and now, only some parts have begun to be processed one after another, thinking of this super large order with Pratt & Whitney, Li Tianfeng couldn't help but smile happily.

Li Tianfeng said: "We are in-depth cooperation with Pratt & Whitney, and many parts of Pratt & Whitney are processed by us. ”

Zhang Haiping said: "Mr. Li, Pratt & Whitney's requirements are very high, I heard that there have been many domestic aviation companies in contact with them before, because they can't meet their quality requirements and finally all of them are yellow, I didn't think that under such strict quality requirements of Pratt & Whitney, Tianfeng Technology has succeeded, which is great." ”

Zhang Haiping gave Li Tianfeng a thumbs up.

After the two looked at this large CNC EDM machine, they talked and laughed, and walked towards a large equipment not far away.

This is a large CNC grinding machine, large, fully enclosed, is processing parts, looking through the closed safety door glass, inside the water is splashing, milky white coolant, spraying on the part being processed at a certain pressure.

At the beginning, Zhang Haiping thought that this was a large five-axis linkage milling machining center, but at a glance, this was not a CNC milling machining center, but a grinding machine that he had never seen before, and the processed parts were actually a blade two or three hundred millimeters long.

"Mr. Li, what is this?"

Obviously, Zhang Haiping is a little confused about the situation, which completely subverts his own understanding, under normal circumstances, the processing of the blade shape adopts five-axis linkage CNC milling processing, but now in front of him is a CNC grinding machine, and the blade shape is grinding at high speed.

This is Li Tianfeng's new initiative, absolutely belongs to the new process and new technology, in Li Tianfeng's memory, the high-speed and high-precision grinding technology of the blade type, the real maturity is more than ten years later, after the technology is mature, there is gradually a trend of replacing CNC milling.

Li Tianfeng said: "Director Zhang, this is a high-speed and high-precision grinding of blade shape, and its machining accuracy, blade surface roughness, etc. are more than a precision level higher than CNC milling, which belongs to a new process technology." ”

Hearing this, Zhang Haiping's eyes lit up, and he was also interested, he didn't think that Tianfeng Technology has this new technology, Zhang Haiping understands technology, and has research on aero engines, after looking at it, he asked.

"Mr. Li, this five-axis linkage CNC grinder is a little weird, the grinding wheel is very small, and the machine tool is something I have never seen before."

Li Tianfeng said: "This five-axis linkage CNC grinding machine is a professional blade grinding machine, which we jointly developed with a famous university in China, and the grinding wheel is also special, which is different from the general grinding wheel. ”

Zhang Haiping said: "No wonder I haven't seen it, Mr. Li, the general processing efficiency is very low when grinding, so it takes a long time to grind a blade." ”

According to the general understanding, grinding is a little bit of feeding, the efficiency is very low, especially the material removal rate is very low, to grind off the allowance of a few wires, it may take half a day, and milling, a knife can easily mill off the allowance of dozens of wires.

Who knows, Li Tianfeng shook his head and said: "No, no, Director Zhang, that's the traditional view, we are high-speed grinding, the linear speed is very fast, ten times the traditional grinding speed, dozens of times, and the processing speed is much faster than milling." ”

What, much faster than milling!!

Zhang Haiping was surprised, knowing the gold content of it, and mastering such a grinding technology means mastering the ability to process all kinds of high-precision and high-quality aero engine blades.

Zhang Haiping said: "Amazing, this is an eye-opener for me." ”

The two of them were talking, just finished the processing of the blades on the machine tool, and the operator took off the blades.

Zhang Haiping is also an insider, seeing that the surface of the blade is very smooth, its surface roughness is absolutely below 0.4, and the surface of the blade is almost like a mirror, which can shine the shadow of a person.

Suddenly, Zhang Haiping was excited, as if he had seen an art treasure, carefully, his hands trembled slightly, and he gently stroked this leaf, as if he was touching a piece of silk.

………

Today's three watches, the first one is sent! R1152