Yun Fei didn't expect that the news revealed by Li Lu would be like this.

He really didn't expect that the North Korean side would attach so much importance to him, the private owner of a small machine tool company from China. At least, there is not much attention paid to him in the country at present.

Yun Fei thought like this, and he was a little angry.

For him, the country is often a green light, otherwise, the large number of machine tool companies in China alone will take the life of Jiuyi Heavy Industry. The country has always had a practice of sharing skills.

Of course, this technology sharing, refers to the technology of private enterprises to share with the state and the State Assets Management Commission under those state-owned factories, if not for the country's attention to him, Jiuyi Heavy Industry's CNC machine tool technology, as early as his CNC machine tool research, was like the Northeast a machine, the capital of a machine such a large state-owned machine tool production plant to share.

Even if he closes down Jiuyi Heavy Industry and burns the research materials of Jiuyi Heavy Industry after the last day, it will be useless.

In terms of scientific research, talent is the most important.

Those workers, whether they came out of 9327, or specialists or technicians from the Soviet Union, would never hesitate to choose the state when it came to choosing between the state and his personal boss.

What he provides, the state can provide. What the state provides, he can't provide.

It's just that the state attaches great importance to Jiuyi Heavy Industry, and Yun Fei doesn't know what to do now. At least, for now, it hasn't risen to the level of overt attention.

The arrogance of the golden sun is known to all the world. That is the self-proclaimed "brightest sun of the 21st century"! Otherwise, he would not be nicknamed the Golden Sun by the world.

The North Korean side attaches great importance to him is something that Yun Fei never expected.

Perhaps, now few people in China understand what is the inevitable connection between CNC machine tools and long-range missiles.

After all, the Soviet Union and China were two countries, when there were no CNC machine tools. Strategic intercontinental missiles with a range of more than 8,000 kilometers or even tens of thousands of kilometers have also been produced. For example, the Soviet Union's Topol-MD strategic missile (said to have a range of 14,000 km, some say 12,500 km), China's Julang-2 (liquid fuel propulsion, maximum range of 8,600 km), and Vostok 31A (solid fuel propulsion, maximum range of 10,600 km) are all hand-machined by ordinary machine tools.

It was not until the beginning of the 21 st century, after more than ten years, that a few people understood the various parts and components of missiles processed by high-precision CNC machine tools. in order to better ensure the performance of the missile.

Otherwise, China's Dongfeng 41 will not be a breakthrough after a major breakthrough in China's CNC machine tool technology.

The breakthrough of CNC machine tool technology involves many things, not only the improvement and innovation of processing technology, but also the higher requirements for materials. Only after the material is improved, the production process can be improved, so as to make a breakthrough in CNC machine tools.

The shell of the long-range missile does not require very high processing accuracy, but there are some spare parts inside. The machining accuracy should be relatively high. For example, the flange of the fuel filling port and the lining of the missile shell are connected at all levels, if you only look at the drawings, the requirements are not very high, only when processing. Only those who process will understand how difficult this is.

For example, the lining of the casing of the various levels linked to the long-range missile requires at least a machining center with more than four axes of linkage.

The domestic missile lining is not a whole ring, but a whole circle processed by a lathe. Then use wire cutting to cut into several arc parts according to the design requirements. Then drill and tap the teeth (make threaded holes) in it, and finally rivet these liners with the hole-punched missile shell.

In the pre-processing, the processing requirements are not very high. But when it comes to drilling holes and tapping threads on the parts that are divided into several parts, the problem arises.

Many people know that a missile is basically a cone, and only in this way can it be more aerodynamic and ensure stability during flight. If the stability of the flight process cannot be guaranteed, even if the range of the produced missile can meet the design requirements, the accuracy range cannot be reduced very small. Therefore, in China and the Soviet Union, two countries that do not have CNC machine tools, the accuracy range of the missile, if it is within 100 meters of the target, is already very accurate.

In the United States and Europe, many missiles have a range of 3-5 meters.

Many people believe that this is determined by the missile's guidance technology.

People who are not professionals know how to do it, and the stability of the missile in the flight process also has a great relationship.

These things are some very professional knowledge, the reason why Yun Fei knows the Tao is because their company at that time had some business dealings with aerospace, and after entering the 21st century, most of the finishing workshops and equipment in aerospace have been replaced with CNC machine tools imported from abroad.

You must know that these imported CNC machine tools are worth hundreds of millions of yuan!

The addition of these equipment is only for the purpose of producing various missiles with a more accurate strike range.

There are at least two angles on the lining, one is along the diameter of the arc of the part, and the other is perpendicular to the outer circle or inner hole of the part (this angle is relatively small, generally not more than five degrees). This makes it difficult to ensure the machining accuracy of the parts when processed on the conventional machine tool.

Four-axis CNC machine tools to do such parts, for the technical workers of the level of operation requirements are too high, not the master level, the processing of parts, the scrap rate will basically exceed 90%, even if the master does, the scrap rate can only be controlled at 80 to 70 percent.

And the processed products are barely usable. That would simply not be able to meet the design accuracy requirements of the missile. The machining accuracy can not be guaranteed, it will lead to the uneven distribution of the screws or rivets at the junction of the missile shell or the place where the rocket engine is loaded with a lot of spare parts at the tail of the missile, although these masses are very subtle, but in the process of high-speed movement at high altitude, they will be placed very large, affecting the stability of the flight process.

Only high-precision five-axis CNC machine tools can complete the processing of these parts.

Only the parts processed by the high-level CNC machine tool with five-axis linkage can ensure the accuracy of the design.

China has always been very mysterious in the development of strategic missiles. Because there is little foreign knowledge about when China will conduct missile tests.

There is almost no much difference between the technology of civilian launch vehicles and the technology of military intercontinental strategic missiles, and China's Long March series is a civilian rocket, which is designed and produced to send satellites into space.

If, in the course of the war, as long as a small number of modifications are undertaken, the civilian Long March series missiles can quickly complete the transformation from civilian to military.

Only with more powerful rocket technology can the nuclear deterrence capability of nuclear-weapon states be expanded to the maximum.

If one day, China's land-based missiles can cover any corner of the world, then even if the United States has a navy that can cover all the seas on the planet, it will not be enough.

North Korea has been conducting secret nuclear tests, but it has not been known to the outside world.

Of course, the Soviet Union was well aware of these tests.

With the collapse of the Soviet Union, North Korea has been in a difficult situation in these tests.

What Yun Fei doesn't understand is that after the establishment of diplomatic relations between China and South Korea in 1992, the relationship between China and North Korea has dropped to a freezing point.

Do they think that with CNC machines, they will be able to make greater progress in their nuclear testing?

Or do you think that if you get your own CNC machine tools, you can get your own CNC machine tool skills? And then be able to study more advanced four-axis, or even five-axis linkage CNC machine tools?

The relationship between the country, Yun Fei can't figure it out, and he doesn't want to figure it out, these things are not something that a little person like him can figure out.

"Did they really take pictures?" For the various door incidents on the network in later generations, Yun Fei was deeply touched.

He didn't expect that one day, he would one day become the protagonist of such a door incident.

The shamelessness of the DPRK's high-level leaders is recognized by the entire world.

The person who does this, is it Jin Yi Fat, or Jin Er Fat?

Jin Erpang is not dead yet!

I don't know if the goods will live a few more days because of their appearance.

"What do you think?" Li Lu smiled meaningfully at Yun Fei.

For such a thing, her heart is very entangled.

both hope that Yun Fei will do this, so that something happens between her and Yun Fei, so that she will not feel guilty; In my heart, I was very dissatisfied with Yun Fei doing this, such a man was so unfaithful!

"......" cloud is not speechless.

Nima, if he is really threatened by a country with his nude photos, it is estimated that he will be as famous as the tombstones carved in front of many ancient tombs.

If so, what should he be proud of? Or should we be proud?

"Do the North Koreans really think that if they get me, they will be able to get what they want?" For things at the national level, Yun Fei, a novice who has never been exposed to politics and is not ready to contact politics, really doesn't understand.

"Who knows? But I think they're mainly trying to ease relations with China right now. After the collapse of the Soviet Union, the only thing North Korea can rely on is China, after the establishment of diplomatic relations between China and South Korea in 92, the relationship between the two countries fell to the freezing point, when the capital bid for the Olympics last year, because of the opposition vote of North Korea, our country's bid for the Olympics was not successful, Jin Yifat's days are numbered, he is preparing for his transfer of power...... "Although he is not very clear about politics, Li Lu still knows the situation in North Korea very clearly.

These days, she is not idle.

She has her own sources of intelligence. (To be continued......)

PS: Thank you for the big monthly pass.

There is another change next, to make up for the previous arrears.