"When did Wang Qingfeng get along with the French again?" Yun Fei was surprised by what Deng Lanqing said.

Deng Lanqing shook his head: "Phillips' people are not willing to help us get these knives. In fact, their own company has a hard material with more than 700 nano-coated layers developed by the Krupp Institute of Materials in Germany.

Alloy knives, but they are not willing to provide them to us. After all, these knives are mainly used for super precision machining and military manufacturing. They do not have the courage to violate the Vasanna Agreement. What's more, they don't want us to have precision manufacturing.

The ability, after all, many cutting-edge medical equipment in our country are imported from them... "

The Vasanna Agreement stipulates not only advanced military technology, but also limits the export of various advanced strategic technologies and process equipment to China.

Yunfei wants to introduce the engines used by their most advanced civilian regional passenger aircraft from Pratt & Whitney. There are also this reasons.

After all, the United States is also one of the initiators of advanced technology.

Especially now that China has not joined the World Trade Organization, it is basically impossible to introduce technology in various advanced technology fields. Only after China joins the World Trade Organization can these high-end technologies that can be extended to the military field.

Gradually open to China.

Even so, the most advanced things are still something that China cannot buy even if it has money.

For example, the high-precision five-axis linkage in Yunfei that world is used to process some key components of aircraft engines, as well as various advanced military materials. Unless China can produce them itself, the worst in the same level abroad

No exports to China.

"Sooner or later, we will no longer need these things from foreigners!" Yun Fei sighed.

No wonder this knife is so expensive, and it is only 400 US dollars per piece without tax.

"Our material factory has been doing the research on nanocoating materials and coating processes for so many years. It should have been successful, right? After all, our research on coating tools is not much later than that in foreign countries.

Time..." Zhang Hu also knew that the five-axis machining center of the Jiuyi Research Institute was about to be finalized these days, and he was running here every now and then. He hadn't expected that this time he came over and met Yun Fei, who was elusive.

He was watching with a golden milling cutter as thick as a small finger. When he heard Deng Lanqing say that this was the most advanced tool worth 400 US dollars, his eyes were almost falling out.

This thing cannot be eaten. It is just a layer of film on the outside, and it is useless after use, especially the alloy matrix inside, which is of no use. He also went to the Jiuyi Materials Factory and its research institute.

After many times, I naturally know where the key technologies of these coating materials are.

"We started late, but for the precision processing technology of the base, we don't have it in China; we don't have the material technology of the substrate, let alone the coating technology on the outside, the thickness of the coating on the outside of the knife is less than that of the thickness of the coating on the outside of the knife

Three silks, but there are more than 700 layers, and we can only get more than 120 layers..." Yun Fei sighed.

Some things can be more successful than others if they are not just investing in capital and starting up.

Just like their thirty-two chips, he had just arrived in Rongcheng and had Soviet technical experts in his hands and quickly made them out. At that time, Europe and the United States were mainly using eight chips. He studied sixteen chips.

However, he dared not sell this chip technology to the world on a large scale, and even in China, he only used it himself and provided it to the military for some research.

This is not because he doesn't know the benefits.

It was not that he had a technical blockade of the entire world out of patriotism.

Instead, foreign technology is far more advanced than China. Once they understand the principles and rely on their accumulated technical experience over the years, they can be successful in a very short experiment. Then Yunfei finally has such a little technology.

There is no lead.

Even after 16-bit chips have been launched on the market in the past two years, they have not replaced the eight-bit chip technology, mainly because the cost is too high and the technical advantages are not too outstanding. Up to now, 32-bit chips have begun to appear on the market.

Although the cost is now ridiculously high. However, this one will not last more than two years to replace 16-bit chips and eight-bit chips.

This is the basis.

"Will you achieve this wear resistance by getting thicker?" Zhang Hu was so a layman that he could no longer be a layman.

Hearing his words, Deng Lanqing rolled her eyes and left. She was ashamed to be with such a guy who pretended to understand and even asked questions that were extremely amateurs.

Yun Fei immediately looked at Zhang Hu and smiled bitterly: "I said Uncle Zhang, can you ask some questions about a little expert? I haven't seen that Mr. Deng doesn't bother to stand with you? This question is really idiotic.

Incomparable. If it is really easy, will we lack tools?"

Zhang Hu was stunned.

He was not a professional, so he could not understand the tricks in this way. He immediately looked at Yun Fei in confusion, hoping to get an answer.

"The coating tool is not the thicker the coating, the better. The outer coating is only to increase the wear resistance of the tool during the cutting process, especially the blade, which is the position..." Yun Feibian's alloy milling cutter in his hand

He picked it up, pointed to the blade and introduced it to Zhang Hu.

Zhang Hu nodded: "I know this, as a milling cutter, it mainly depends on this side edge for cutting. Don't act like I don't know anything. Just tell me why the coating cannot be too thick...

…”

Faced with Zhang Hu's appearance that I understand, Yun Fei was speechless.

This seems to be a common problem for guys in the entire system, and they all like to pretend to understand if they don’t.

Who said that the main cutting of milling cutters is to rely on two side edges? I wonder if there are many special milling cutters that rely on the bottom edge for cutting? However, Yun Fei is too lazy to explain to Zhang Hu now, and to those who don’t understand technology.

These professional technical knowledge are very difficult.

"These city-slaughtering materials mainly use vapor deposition or physical deposition, or the two methods intersect using ionic coating to glue to the substrate of the tool... Don't ask what physical deposition or vapor deposition is, you only

You need to know that these are two different things. Just stick these very fine wear-resistant materials to the tool substrate..." Yun Fei was confused when he saw Zhang Hu's face and was about to speak, and he was speechless.

If the Kuma had grown up at this time, he would definitely ask him to ask the Kuma.

Zhang Hu nodded, and even though he was like a fog in the clouds, he still did not interrupt Yun Fei.

When he arrived at the September 1st Research Institute, those guys did not explain this to him, perhaps because they were afraid that it would be too difficult to explain, so they did not mention these professional terms at all.

"The thicker the coating, the better, because these wear-resistant materials are very hard and have very high brittleness, just like those ceramics, hard enough, right? But it's easy to break. What's more, these coatings are

Too thick material will make the cutting edge of the tool dull. For these difficult-to-process materials with good cutting toughness, it is necessary to ensure the sharpness of the blade..." Yun Fei explained to Zhang Hu for a long time, and finally Zhang Hu understood it in a slight way.

Why isn't the thicker the coating, the better?

"So, the thickness of these coating materials is fixed. Within this fixed range, the more layers of coatings, the better the wear resistance of these tools?" Zhang Hu finally asked a question

If he is good, Yun Fei was about to nod, let out a long sigh and then sighed about his own difficulties, Zhang Hu said something that made him almost go wild: "Oh, wouldn't you just tell me like this earlier?"

I have to show off your expertise in front of me, and let me in a fog and tell me that the thinner the coating, the better, and the more the better..."

"I can't communicate happily with you..." Yun Fei was speechless.

"So, if Jiuyi Materials develops such a knife, it can be sold for 400 US dollars each? Boy, this is a sign of getting rich!"

"Dream. The production cost of this thing by Germans will definitely not exceed one hundred dollars per piece. And with the improvement of technology and the advancement of technology, it is possible to reduce the price to one or twenty dollars or even a few dollars.

.In this world, it is not only Germans who are advanced in tool technology. Americans and Japanese are even better than them!" Yun Fei sighed.

Especially in Japan and the United States, the technology in this area is definitely not something that Chinese people can’t do if they don’t admire it.

"Then they have to sell it to us at such a high price?" Zhang Hu's question made Yun Fei completely go crazy.

"If we have such technology in our country, or if Europe and the United States do not block us, do you think we should use some shameful methods to obtain these knives? Just take a look and go back. The food in our canteen here is compared to your government canteen.

It's far from it..." It seems that Deng Lanqing's departure is not unreasonable.

It's really hard to communicate with these people who don't understand technology.

"Now I know why I am hiding from him? Our country's poor foundation is not something that our research institutes and these supporting factories can do. He has to explain it to him once, which makes people's heads big."

Seeing Yun Fei walking towards him as if he wanted to eat people, and Zhang Hu followed Yun Fei and walked towards him, Deng Lanqing immediately looked at Yun Fei with a sympathy.

"Let's just ignore him, he does whatever he wants. I don't know what the big guys above think, why did he get him, a guy who doesn't understand technology, be a person in charge of industry and let him be in charge of economy.

OK..." (To be continued, please search for astronomy, novels are better, updated and faster!
Chapter completed!