Chapter 964

"When did Wang Qingfeng hook up with the French again?" Yun Fei was surprised at what Deng Lanqing said.

Deng Lanqing shook his head: "Philip's people are not willing to help us get these tools. In fact, their own company has this cemented carbide tool with more than 700 layers of nano coating developed by Krupp Institute of materials in Germany, but they are unwilling to provide it to us under the pretext. After all, these tools are mainly used for super precision machining and military manufacturing. They don't have the courage to violate the Wassenaar agreement. What's more, they don't want us to have the ability of precision manufacturing. After all, many cutting-edge medical equipment in our country are imported from their country... "

The Wassenaar agreement not only stipulates advanced military technology, but also restricts the export of various advanced strategic technologies and technological equipment to China.

Yunfei wants to introduce their most advanced civil regional airliner engines from Pratt Whitney for this reason.

After all, the United States is also one of the sponsors of the blockade of advanced technology against China.

Especially now that China has not joined the world trade organization, it is basically impossible to succeed in introducing technology in various advanced technology fields. Only after China's accession to the world trade organization will these high-end technologies that can be extended to the military field be gradually opened to China.

Even so, the most advanced things are still things that China can't buy with money.

For example, the world's high-precision five axis linkage technology and equipment used to process some key parts of aeroengines and various advanced military materials will not be exported to China unless China can produce them by itself.

"Sooner or later, we won't need these things from foreigners!" Yun Fei sighed.

No wonder this knife is so expensive. It's $400 a knife without tax.

"Our material factory has been engaged in the research of nano coating materials and coating technology for so many years. It should have been successful long ago, right? After all, our research on coated cutting tools is not much later than that in foreign countries... "Zhang Hu also knows that the five axis machining center of Jiuyi Research Institute is about to be finalized these days. He runs here every now and then. He didn't expect that he actually met Yunfei, who was watching with a golden milling cutter with small finger thickness, When Deng Lanqing said that this was the most advanced cutting tool of 400 US dollars, his eyes were about to fall out.

This thing can't be eaten. It's just a layer of film on the outside. It's useless after use, especially the alloy matrix inside. He has also been to Jiuyi material factory and Its Research Institute many times. Naturally, he knows where the key technologies of these coating materials are.

"It's not too late for us to start, but we don't have the precision machining technology of the base in China; We also don't have the material and technology of the matrix; Not to mention the external coating technology, the coating thickness of the tool is less than three wires, but there are more than 700 layers, and we can only get more than 120 layers... "Yun Fei sighed.

Some things, not only capital investment and start early, can be more successful than others.

Just like their 32-bit chips, it was clear that he had just arrived in Chengdu and had Soviet technical experts in his hands. At that time, European and American countries were mainly using 8-bit chips and studying 16 bit chip technology, but he dared not sell this chip technology to the world on a large scale, Even in China, they are only used by themselves and provided to the military for some research.

It's not that he doesn't know the benefits.

What's more, he did not impose a technological blockade on the whole world out of patriotism.

But foreign technology is far more advanced than China. Once they understand the principle, with their technical experience accumulated over the years, they can succeed in a very short test. At that time, the cloud will not have such a little technical leading edge.

The 16 bit chip has not replaced the 8-bit chip technology even after it has been introduced to the market in the past two years, mainly because the cost is too high and the technical advantages are not too prominent. Up to now, there are 32-bit chips on the market. Although the cost is outrageous, it will not take more than two years to replace 16 bit chips and eight bit chips.

This is the foundation.

"Isn't this wear resistance achieved by thickening?" As for technology, Zhang Hu is no longer a layman.

Hearing this, Deng Lanqing turned her eyes and left directly. She was not ashamed to be with such a guy who pretended to know nothing and even asked questions.

Yun Fei immediately looked at Zhang Hu and smiled bitterly: "I said Uncle Zhang, can you ask something a little expert? Don't you see that President Deng disdains to stand with you? This question is really stupid. If it's so easy, we'll be short of knives? "

Zhang Hu was immediately stunned.

He is not a professional and can't understand the doorway. Immediately looked at Yun Fei in doubt, hoping to get an answer.

"The thicker the coating, the better the coated tool. The coating on the outside is only to increase the wear resistance of the tool in the cutting process, especially the blade, which is this position..." Yun Fei picked up the alloy milling cutter in his hand, pointed to the blade and introduced it to Zhang Hu.

Zhang Hu nodded: "well, I know that milling cutters mainly rely on this side edge for cutting. Don't think I don't understand anything. Just tell me why the coating can't be too thick... "

In the face of Zhang Hu's appearance that I understand, Yun Fei was speechless immediately.

This seems to be a common problem of guys in the whole system. They like to pretend to understand.

Who says that the main cutting of milling cutter is relying on two side edges? Do you know that there are many special milling cutters that cut by the edge at the bottom? However, Yunfei is too lazy to explain to Zhang Hu now. It is very difficult for people who do not understand technology to explain these professional technical knowledge.

"These slaughterhouse materials mainly adopt vapor deposition method or physical deposition method, or the difference between the two methods. They are coated in ionic state and adhered to the substrate of the tool... Don't ask what physical deposition method or vapor deposition method is, You just need to know that these are two different materials. You can stick these very fine wear-resistant materials to the tool matrix... "Yun Fei saw Zhang Hu's doubts on his face and was ready to speak. He was a little speechless immediately.

If Du Niang has grown up at this time, he will definitely let him ask Du Niang.

Zhang Hu nodded. Even though it was like a fog, he still didn't interrupt Yun Fei's words.

When he arrived at the 91 Research Institute, those guys didn't explain these to him. Perhaps they were afraid that it would be too hard to explain, and didn't mention these professional terms at all.

"The thicker the coating, the better, because these wear-resistant materials are very hard and brittle. Just like those ceramics, are they hard enough? But it's easy to break it. Moreover, if these coating materials are too thick, the cutting edge of the tool will become blunt. For these difficult to machine materials with good cutting toughness, we must ensure the sharpness of the blade... "Yun Fei explained to Zhang Hu for a long time, and finally let Zhang Hu plausibly understand why the thicker the coating is not the better.

"So, the thickness of these coating materials is fixed. Within this fixed range, the more layers of coating, the better the wear resistance of these tools?" Zhang Hu finally asked a good question. Yun Fei was just about to nod his head, take a breath, and then lament that it was not easy for him. Zhang Hu said something that made him go mad: "Oh, why didn't you tell me earlier? You have to show off your professional knowledge in front of me, and then tell me that the thinner the coating, the better, the more... "

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

"So, if this kind of tool is developed by 91 materials, it can also be sold for 400 dollars? Boy, this is a sign that you are going to get rich! "

"Dream. The production cost of this thing in Germany will never exceed $100 a piece, and with the improvement of technology, it is possible to reduce the price to $10, 20 or even a few dollars. In this world, not only the Germans are advanced in cutting tool technology, but the Americans and Japanese are even better than them! " Yun Fei sighed.

Especially in Japan and the United States, the technology in this field is definitely not boasted. It is impossible for the Chinese people to admire it.

"Then they want to sell it to us at such a high price?" Zhang Hu's problem makes Yun Fei completely go wild.

"If we have such technology in China, or if Europe and the United States do not block us, do you think we will use some shady methods to obtain these knives? Take a look and go back. The food in our canteen is far worse than that in your government canteen... "It seems that Deng Lanqing's departure is not unreasonable.

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

"Now you know why I'm avoiding him? Our domestic foundation is poor, which can not be completed by our research institute and these supporting factories. He has to explain it to him once. It makes people's head big. " Seeing that Yunfei was going to eat people, Zhang Hu followed Yunfei's back and came this way, Deng Lanqing immediately made a sympathetic look and looked at Yunfei.

"Let's just ignore him. He likes what he likes. I don't know what those big men above think. How can they get him, a guy who doesn't know technology, to be the person in charge of industry and let him be in charge of economy... "