Sure enough, Miguel said apologetically: "Mr. Li, I'm very embarrassed. The company has important matters. I must return to China immediately. The cooperation between us can only be postponed.

Li Tianfeng knew that "pushing back" was a euphemism. Perhaps, this matter would be put on hold indefinitely, and the cooperation between the two parties might be ruined. Thinking about this, Li Tianfeng was extremely depressed.

It is about to reach a cooperation agreement, and a cooperation agreement is about to be signed, but at this critical moment, it would be strange if you are disturbed by a phone call and you will be in a good mood.

Miguel also knew that he was in a disadvantage, stood up, apologized to Li Tianfeng and others again, and said again: "Mr. Li, I'm so sorry!"

Now that things have come to this, Li Tianfeng waved his hand and said, "Forget it, Mr. Miguel, I know you can't blame you for this. It should be the phone call of one of your bosses just now."

Miguel nodded, "Mr. Li, after I return to China, I will try my best to get it. I personally think that your turboshaft e engine is very suitable for many of our helicopters."

After saying that, Miguel shook hands with Li Tianfeng and others one by one with apology, and then hurried out of the conference room with his subordinate and translator.

………

Tianfeng Technology Company.

In the past two days, Li Tianfeng finally figured out what happened to Miguel. Now, Zhang Haiping also called the phone in person. Because Zhang Haiping was asking for connections and contacts for the original incident, Zhang Haiping was also quite anxious.

Zhang Haiping said: "Mr. Li, you see this incident, oh, I'm so sorry."

Li Tianfeng said: "Director Zhang, the matter has nothing to do with you. It's mainly because someone is disrupting the situation, otherwise. We have formed a cooperation with Amazon Aviation Industry Corporation. At the beginning, we agreed on the price, but we were disturbed by a call at the critical moment."

Zhang Haiping said: "Mr. Li, you already know that someone was disrupting the situation? I just found out, but I didn't expect that there are people like this who don't talk about the rules of competition."

Li Tianfeng said: "Their turboshaft engine is obviously not as good as our turboshaft e engine. If Amazon Aviation Industry Corporation really chooses them, I think Amazon Aviation Industry Corporation has taken a step forward."

Zhang Haiping nodded and said, "Mr. Li, I will help you find a relationship. When Miguel comes back from Brazil, I will use the relationship to have a good talk with him."

Li Tianfeng said: "Director Zhang. Forget it, I appreciate your kindness. Let's do it."

Giving up like this is definitely not Li Tianfeng's personality. Some efforts that should be made must be done, and it is definitely necessary to try their best to win. Li Tianfeng is not willing to lose such a big customer, because Amazon Aviation Industry Corporation produces a lot of helicopters of various types every year. There are many turboshaft engines needed.

Zhang Haiping thought for a while and said, "Mr. Li, that's OK, but if you have any difficulties, remember to call me. As long as I, Lao Zhang, can help, I will definitely spare no effort."

The two chatted on the phone. After hanging up the phone, Li Tianfeng thought to himself that Zhang Haiping is good and can be regarded as a friend who can make friends with him.

Li Tianfeng thought to himself. I will definitely not be willing to give up just like this. Thinking of this in his heart, Li Tianfeng picked up the phone again and dialed a number...

………

Tianfeng Technology Company, blade processing workshop.

Although the design work of Tianfeng Technology's medium-sized turbofan engine with a thrust-to-weight ratio of 10 has not been fully completed, some parts have begun to enter the trial production stage, such as wide-string hollow fan blades.

The production process of this fan blade is relatively complex, and the main process is superplastic molding and diffusion connection technology. As the director of the Process Technology Department and chief craftsman of Tianfeng Technology Company, Zeng Qinghai is at the processing site.

Last month, Tianfeng Technology Company promoted a group of middle and senior managers, Zeng Qinghai, the Minister of Process Technology, and became the chief craftsman and director of the Process Technology Department of Tianfeng Technology Company.

Not only has it promoted a group of middle and senior managers, but Tianfeng Technology Company also recruited a group of high-end technical talents, including more than a dozen postdoctoral students and more doctoral students, involving several fields such as materials, technology, and design.

Tianfeng Technology Company now has a certain reputation in China, especially the aviation industry, and its ability to attract talents is relatively strong. In addition, Hu Xiao, the director and human resources director of the Human Resources Department with outstanding abilities, formulates a very scientific talent recruitment plan every year. Tianfeng Technology Company's talent team structure is more complete and stronger.

Blade processing workshop, this is the professional blade processing workshop of Tianfeng Technology Company. Zeng Qinghai personally attended the processing site and personally paid attention to the processing of the first batch of fan blades.

This batch of blades is extremely advanced in design and the manufacturing process is relatively complex. Zeng Qinghai attaches great importance to the first batch of processing, especially this super-plastic molding and diffusion connection process, which is a brand new manufacturing process for Tianfeng Technology Company.

Each of these fan blades is divided into two front and back, that is, the leaf pot and the back of the blade. The two blades are combined together and the middle is filled with metal honeycombs to make a complete blade.

The leaf shapes of these blanks have been carefully processed in CNC according to the process requirements, and they also adopt very advanced high-speed and high-precision grinding technology. Each blade is processed very beautifully and exquisitely.

These fan blades are very beautifully processed and exquisitely, but they can only be considered semi-finished products. Not only are the leaf shapes a little flat, but they are far from reaching the final beautiful pneumatic layout of the leaf shape, and the tongue and groove have not been finished.

Zeng Qinghai was holding a semi-finished fan blade and looked at it with satisfaction. Even if it was a semi-finished product, it was processed exquisitely and beautifully enough. Because it was the first time to process, Zeng Qinghai raised requirements in the process to ensure the success of one-time processing.

Just as he was holding the leaves and watching carefully, Li Tianfeng walked in from outside the blade workshop and walked all the way to the next to the batch of leaves.

Zeng Qinghai said: "Boss, you have done all the process preparations and are preparing to start processing."

Li Tianfeng pointed out: "Then let's start now and see if our fan blade processing can be successful."

Zeng Qinghai nodded and signaled the craftsman in charge next to him to start. Because it involved advanced new process methods, there were many process technicians here. Li Tianfeng nodded to everyone and said hello.

After the signing began, a worker carefully applied the stop flux evenly on the mold. The mold was designed and processed by Tianfeng Technology Company itself. The working surface of the mold is the same as the final blade shape of the fan blade, and the abrasive tool is divided into two parts: upper and lower parts.

No one spoke at the scene. Everyone watched the worker operate seriously. A craftsman in charge next to him was holding a thick blank paper processing process regulations to guide the worker to operate.

Applying a stop flux to the mold is to prevent the blades from being bonded to the mold and cannot be removed when super-plasticized.

After applying the flux, the worker carefully checked and confirmed that it was correct. He picked up the two blades that had been paired long ago, and applied the welding agent on the two relatively flat blades where the two blades were combined together and contacted each other carefully according to the process requirements.

Wait, under a certain pressure and temperature, the two blades will be welded together to form a whole and form a finished blade. Of course, under the action of the mold, the blade shapes of these two welded blades will change, and finally gradually reach the blade shape that matches the final design requirements.

This is a superplastic molding process, the purpose is to not only weld the blades together, but also to finally form the blades to achieve the blade shape that meets the design requirements.

Apply welding agent to the two blades, and then put the core plate that has been prepared and processed to the specified size and shape between the two blades, as if it were a burger, with two blades sandwiched a core plate.

Align the two blades, install a core plate in the middle, then put it into the mold, press the start button, the mold starts to slowly press down, and heats up, and the air in the mold cavity is drawn out.

This set of special molds is very large, specially used for super-plastic molding and diffusion welding of this fan blade. The structure is also relatively complex, and the mold is much higher than that of a person, including digital display and digital control.

Tianfeng Technology Company can develop aircraft engines with higher technical content, so there is no problem with such a set of molds. In a few months, the mold can be made and used and installed in the blade processing workshop.

Such a big guy is more vivid and appropriate than a blade processing equipment, than a mold.

Superplastic molding has strict process parameters, such as vacuum degree, pressure, temperature, time, etc. Everything must be strictly followed in accordance with the process parameters and steps.

The purpose of the processing of these first batch of fan blades is to conduct process verification, verify whether the process parameters and process steps are reasonable and scientific, and whether improvement and improvement are needed.

Internationally, the superplastic forming and diffusion connection process of wide-string hollow fan blades has developed to the third generation. Only Luoluo, the company, has mastered the third generation superplastic forming and diffusion connection process. Even Puhui and General Motors have begun process experiments on the third generation superplastic forming and diffusion connection process.

If Tianfeng Technology Company's process verification is successful, it will become the second aviation industry company in the world to master the third generation of superplastic molding and diffusion connection processes.

The mold gradually presses down, and the air in the mold cavity is drawn away. According to the process requirements, 1.5mpa of argon is blown in. It can be seen from the digital display that the temperature in the mold is rising according to the process requirements.

Everyone looked at the display data on the display screen. The temperature kept rising. After it rose to a temperature of 920 degrees, the temperature began to stabilize. At this temperature, super-plastic molding began. If you could see clearly the situation in the mold, you would definitely see that the fan blades you just put in were gradually changing.

………

Today's third update, the third update is here!

With the efforts, I still achieved the third update. Please recommend votes and monthly votes! (To be continued...)
Chapter completed!