The technological empire begins with polymer materials

The speed of Kunlun Seiko shocked everyone. It took less than six minutes to mill out a set of marine propellers. Such efficiency is simply crazy.

After all, it takes at least forty minutes to manufacture the same set of propellers using a traditional five-axis milling machine. Kunlun Precision's manufacturing efficiency is about seven times that of traditional machine tools.

People in the West were extremely upset and sent barrages to complain.

China's manufacturing efficiency is already amazing, and now that it has such efficient fully automatic machine tools, I'm afraid it will leave the world far behind in terms of cost.

Gao Yuan watched some barrages and then said with a smile: "Kunlun Precision can achieve such a high efficiency. In addition to high-speed drives, the most important thing is actually material technology. Our carbon nanotube condensate is not only strong, but also able to withstand high temperatures. , if it were replaced with ordinary metal and cut at such a fast speed, I'm afraid it would have turned red and deformed due to the high temperature."

"Of course, speed is only one aspect. The key is accuracy. Submarines, rockets, and supersonic aircraft. The more sophisticated the mechanical structure, the higher the accuracy requirements."

"Now please look at the big screen. After joint detection by laser and magnetic resonance, the error of this set of marine propellers is as follows."

Huh~

The big screen behind him suddenly flashed, and then a lot of data appeared.

"Average error, one point and twenty-six microns!?"

"It's only more than one micron? Doesn't that mean that the surface of the propeller is smoother than a mirror?"

"I always feel that Kunlun Seiko is actually not using its full strength."

"I also have this feeling. If we reduce the speed and grind finely, the error should easily be less than one micron."

"Nano-scale machine tools!? Do you know what you are talking about?"

"So what about nano? Although it is more difficult, this is Kunlun Group after all, a legendary company that is good at creating miracles!"

The error results made everyone excited. Audiences who had studied mechanics even pointed out that one micron was probably not the limit for Kunlun Precision. Looking at the way the machine tool was making drastic changes just now, it didn’t look like it was doing delicate work and just casually used a set of propellers. It was milled out.

Assuming that Kunlun Precision is given enough time to carve slowly, this machine tool will definitely be able to transcend microns and enter the world of nanometer precision.

For this reason, the audience cheered and looked forward to the next manufacturing of aircraft engine blades.

"Well, the results are not bad." Gao Yuan looked at the big screen, as if he didn't care at all, and nodded slightly and said: "The error is just over one micron, which is in line with our expectations. After all, it is high-speed processing, and the machine is slightly less stable. Moreover, After all, a propeller with an accuracy of one micron is enough, and even a propeller for a nuclear submarine has an error of more than five microns."

"Now our engineering team is doing the final debugging for Kunlun Precision. After all, it is challenging the world's most precise parts, aircraft engine blades. Not only does the machine need to be adjusted, but the carbon nanocondensate that will be used later also needs to be updated. Expensive and more sophisticated.”

"The materials to be milled have been installed. Our engineers only wear white dust-proof suits because they are afraid that dust contamination will reduce the processing accuracy."

The engineers of Kunlun Group were very cautious and repeatedly checked and calibrated the machine. It took them a full twenty minutes before they made an OK gesture towards the plateau to indicate that the machine inspection was completed.

Phew~

Gao Yuan let out a long breath and patted the control engineer next to him on the shoulder.

The control engineer understood and immediately pressed the start button. The machine made a very weak buzzing sound, and the robotic arm pulled out the No. 3 milling cutter from the tool holder.

"This process will take a long time, so we can take advantage of this time to talk about aero-engine issues." Gao Yuan smiled and seemed to be preparing to enter the traditional class time.

"The full name of aerospace engine blades is called aeroengine high-pressure turbine rotor blades. These blades require complex internal cooling airways. In the past, models were made first and then cast with a special ceramic."

"In other words, aircraft engine blades are not milled, but poured. The pouring process is extremely troublesome, involving not only metal materials science, but also mechanical technology and chemical coating technology."

"Each pouring requires countless layers of coatings. The level of coating technology directly determines the quality of the blades. Currently, except for Russia, which still uses aunties to apply coatings manually, other countries around the world have used robotic arms."

Sure enough, Gao Yuan started the class, but unlike before, he was more like introducing interesting facts about the manufacturing process of aircraft engine blades.

Through science popularization on the plateau, the audience gradually understood why aviation engines are so difficult to make. In order to prevent overheating, the blades are usually coated with ceramics, but ceramics are a bit brittle. During high-speed operation, even 0.01 gram The peeling off of the ceramic coating is fatal to the engine.

So scientists thought of zirconium oxide. They used an electron gun to emit an electron beam and establish a magnetic field. The magnetic field guided the electron beam and accurately hit the zirconium oxide substrate. The substrate bombarded by the electron beam would instantly turn into a gaseous state. The gaseous zirconium oxide was then absorbed by the magnetic field. Guide, attach to the leaf surface and grow rapidly.

Eventually, zirconium oxide will grow into small sticks with a diameter of 1 micron and a length of 50 microns, densely covering the surface of the blade. There can be slight relative movement between the small sticks, but the entire piece will not peel off. At this point, the heat-resistant coating of the blade is The problem is finally solved.

Except for a few aviation fans, most people who eat melon don't know this. After listening to Gao Yuan's words, they went crazy on the spot! It turns out that just coating the blades is so difficult!

No wonder it often takes more than ten years, or even decades, for aviation development to go from design to production. It is worthy of being the brightest pearl in the industrial crown. The technical level is really too high.

Gao Yuan said: "Fortunately, the difficulties faced in manufacturing aircraft engine blades using casting methods do not exist for us, because we started out in materials. Carbon nanotube polymers can overcome high temperatures, even without thermal holes. It can still fly, and its hardness and toughness exceed that of titanium alloy..."

After hearing this, the audience made comments in the audience.

"Well, Boss Gao talks about it so easily, which seems a bit annoying."

"Definitely, if I were an engineer from Boeing or Lockheed Martin, I would probably be so angry that I would spit out my blood."

"It's too bullying. Western-made aviation blades have to go through so many processes and need to fill up the front technology tree. Boss Gao is so good, it's simple and crude! Just put it on the machine tool and mill it!"

Unconsciously, twenty minutes have passed. Five sets of marine propellers have been milled out, but the aircraft blades have just been finalized. The robotic arm slowed down and was very patient, polishing it over and over again.

The laser detector seems to have never stopped since the beginning, and the red light filament is constantly scanning the leaves, checking for the smallest changes.

The waiting time inevitably makes people anxious. Gao Yuan continued to attend class and taught some small knowledge about aircraft engine manufacturing. The time passed minute by minute, but he didn't feel bored at all.

In the blink of an eye, more than an hour had passed. Although Gao Yuan was eloquent and eloquent, the audience did not want to listen at the moment. They all stared at the exquisite work of art in the workshop.

It is round and flawless, with a shimmering surface that is as dazzling as a black pearl. It has countless leaves stacked on top of each other, with elegant curves and sharp arcs that perfectly fit the aerodynamics. From any angle, it contains an ultimate sense of beauty.

It took one hour, seventeen minutes and five seconds to complete the aircraft engine blade!

It was time to go to the dentist again. After having my teeth cleaned, my gums bleed after the cleaning.

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