Chapter 467

"What new material?" Li Fang asked.

Qian Qiang was embarrassed to smile. Then he looked at Zhuang Jianye and said modestly, "I'm not very proficient in materials. Zhuang always leads this area. Let him introduce me."

Zhuang Jianye had long expected that Qian Qiang would say that. He couldn't help it. Qian Qiang is such a person. He always goes straight in life. If it comes to the aeroengine, he won't feel tired for three days and three nights. But if he gets out of this area, he'll spare no money.

Materials, especially aeroengine materials, Qian Qiang, a guy who is engaged in gas turbine power plant, is not clear in his mind. How can he process materials into parts and apply them to gas turbine power plant?

However, it's not his own main research and achievement. Qian Qiang feels that it's not his own thing. If he talks about it, he will be suspected of using other people's achievements to put money on his own face. If this achievement is obtained by a man, Qian Qiang's face is fair. It's a woman, and his professional title and position are not as good as his own when he was still at Xihang University It's a stubborn woman.

No matter how thick skinned Qian Qiang is, he doesn't want a stubborn woman to rub her back.

Zhuang Jianye doesn't care about the chain of disdain between Qian Qiang and song Yanan. He is an excellent senior expert in his field, so he should be a little arrogant. It's OK to despise each other and look down on each other, as long as you work hard for yourself.

So with a light cough, Zhuang Jianye naturally took over: "at present, our aviation technology R & D center of Tengfei Aviation Corporation has developed two series of metal matrix composites besides carbon fiber composites, one is aluminum matrix composites, the other is titanium matrix composites.

Among them, titanium matrix composites are silicon carbide fiber reinforced titanium matrix composites; there are two kinds of aluminum matrix composites, one is silicon carbide fiber reinforced composites, and the other is carbon fiber reinforced aluminum matrix composites made of T300 carbon fiber composites. "

"Xiaozhuang, what did you just say you did? Carbon fiber reinforced aluminum matrix composites It was not Li Fang or song Changzheng who spoke this time, but director Zhao, who was on the sidelines.

Because it was too sudden, and the voice was surprised and loud, Zhuang Jianye was startled, but director Zhao was particularly aware of his gaffe. He stepped forward and looked straight at Zhuang Jianye's face, anxiously urging: "you are talking, do you really make carbon fiber reinforced aluminum matrix composites? Can large scale industrial production be carried out? How about the production now? How much stock do you have? "

The problems are so many that Zhuang Jianye's head is buzzing. Song Changzheng and Li Fang are surprised when they look at this scene, because whether it's silicon carbide fiber or carbon fiber, they are surrounded by clouds, so that Zhuang Jianye can understand two words after a long time, one is aluminum, the other is titanium.

But why fiber? Can we weave?

However, this absurd idea only flashed away in their minds, because it was very simple. Looking at director Zhao's excited appearance, it was obvious that what he said about carbon fiber reinforced aluminum matrix composites was not simple.

You should know that director Zhao's casual clothes are from the space system, and his military uniform is the second artillery. He is playing with nuclear deterrence, which is the most important weapon of the country. He can take out any one of them, which is one of the best in the country.

Therefore, it's really difficult for ordinary things to get into director Zhao's eyes. Otherwise, after several people's discussion for such a long time, they didn't say a word. Apart from the embarrassment before, it's mainly because director Zhao's family doesn't care about these things at all.

No matter how powerful the plane is, it's the life of hovering in the atmosphere. Director Zhao's tricks are all about rushing into outer space and re entering the atmosphere. His rank is not on the same level.

But now director Zhao, a high-ranking man, suddenly becomes fanatical and excited. He asks about Zhuang Jianye's carbon fiber reinforced aluminum matrix composites. Obviously, this kind of thing is unusual.

So they looked at each other, and song Changzheng immediately stepped forward without hesitation: "Lao Zhao, Lao Zhao ~ ~ ~ you see what kind of terror Xiao Zhuang has become. Calm down, calm down, come on Drink water and talk about what carbon fiber reinforced aluminum matrix composites are

After Song Changzheng had a good sleep, director Zhao also felt a bit out of his position. He took the water from Song Changzheng and poured it down. Then he glanced at Song Changzheng and Li Fang: "good thing, better than gold. Let me tell you, with carbon fiber reinforced aluminum matrix composite, a missile with a range of 3000 km can have a range of 5000 km immediately Range... "

Director Zhao is right. Missiles, especially long-range missiles that can re-enter the atmosphere, need not only light weight but also high strength structural materials such as missile body, instrument cabin, fairing and internal support.

Due to the high temperature generated by the friction between the missile body and the air when the missile is launched into the air, it also needs the material to be stable at high temperature and have excellent creep resistance.

The above three points are only the basic requirements for advanced missile body materials. The remaining injected friction coefficient should be small, have certain thermal and electrical conductivity, and have good machinability. The requirements are not much less than the general requirements for Aeroengine materials.If not, how long-range missiles? Only a few countries in the world can make it clear that although other countries are trying to catch up with each other, no matter how hard they toss, they are always a little behind the head. That's the fundamental reason.

For the same missile body, several big countries use high-performance alloy materials, while other catching up countries use alloy steel. This alone reduces the payload and range of catching up countries under the same thrust. As for other supporting structures, the sealing of fuel tank is not good, and the heat dissipation of loaded warhead is not good, the launched missile can directly become a large gun War.

Compared with other catching up countries, China is so weak. After all, there are several leading figures in China, and the system integration ability in aerospace is very strong.

But there is still a big gap compared with the top big men like the United States. They can send people into space with the same thrust, but they can only send a mouse in China.

In addition to the technical level gap, the key lies in the materials used in missiles.

According to the public information, the U.S. militia III, Trident and other missiles use carbon fiber composite materials. However, if the wrongdoer really uses carbon fiber composite materials such as t500 and T700 to load long-range missiles, he will really treat the missiles as artillery battles.

The full name of T700 Carbon fiber composite is carbon fiber resin composite, and its strength, mildness and even yield degree are unknown. However, due to the natural preparation process, the heat resistance of carbon fiber resin composite is not good. In other words, when the missile is rising rapidly, the heat generated by friction with air is enough to burn through the shell made of this kind of material.

That's why fighter planes generally don't use carbon fiber composite materials for secondary parts, because the heat generated by the airframe is also terrible at supersonic speed.

But you have to point to the nose of the Americans and say that if you cheat me, the Americans will definitely fight back. That's your ignorance.

Is it carbon fiber composite? Yes, but not carbon fiber resin composite, but carbon fiber reinforced aluminum matrix composite.