Chapter 875

Miss leiha kept holding her breath. At this time, she heard the roll call of baozixuan. I thought it was my turn to show the American grandmother that they could win World War II not because of advanced technology and good basic materials. It's just that it has more advantages in strategy, which has little to do with personal ability and enterprise technical strength. Many people are not convinced of Germany's defeat, especially engineers.

Mia von lehart stood up and said, "Hello, I'm MIA von lehart, doctor of materials; From Thyssen. I'm glad to work with you. I hope this cooperation will not disappoint me. "

No one expected that this female engineer should be so arrogant. German women are really strong. At this time, everyone was curious to see what this woman could do; How dare you say that. However, since we can attend this seminar, no one dares to despise it. Bao Zixuan doesn't rub anything in his eyes. It's impossible to let you in without skill.

Mia von lehart continued: "according to the technical requirements of military vehicles, Thyssen and Krupp decided to use K8 composite armor."

Composite armor is a heterogeneous tank armor composed of more than two layers of protective materials with different properties. Generally speaking, it is composed of one or several materials with different physical properties, which are compounded according to a certain level proportion. It depends on the difference of physical properties between each level to interfere with the penetration of incoming projectile, consume its energy, and finally achieve the purpose of preventing projectile penetration. This kind of armor is divided into metal and metal composite armor, metal and non-metal composite armor and spacer armor, all of which have strong comprehensive protection performance.

Composite armor has multiple layers. Armor piercing shells or armor piercing shells consume a certain amount of energy for each layer. Due to the different hardness of each layer of materials, the direction of the core of armor piercing projectile or the metal jet of armor piercing projectile can be changed, and even the core of armor piercing projectile can be broken. Therefore, the penetration resistance of composite armor is much higher than that of homogeneous armor. When the weight per unit area of armor is the same, the anti armor projectile ability of composite armor is twice that of homogeneous steel armor.

The emergence of composite armor is a revolution in the history of tank protection technology. Its birth makes the tank move towards the road of improving protection by relying on new material technology rather than simply thickening armor. To some extent, it also makes the tank come out from the deadly threat of anti tank weapons and regain the throne of the king of land warfare. It can be said without exaggeration, Composite armor saved the weapon of tank.

Many people are still skeptical that composite armor can be used. It doesn't have much to do with cognition. It's mainly worried about the excessive weight of the car body.

There have been different opinions on what materials to use. American engineers still want to use traditional metal materials; Special alloy material with high strength and toughness. But German engineers insist on using composite armor materials, which they believe is the inevitable trend of the future development of military vehicles.

Special steel can not effectively resist attack. Composite armor can perfectly solve the direct attack of bullets and small shells.

David Bruce, the person in charge of the assembly, directly asked, "Dr. lehart, we have discussed it before. Composite armor materials have high cost, complex processing and excessive weight. It's hard to meet the requirements of the U.S. military for new military vehicles. What's the difference between K8 composite armor? "

We are all smart people. If people dare to put it forward, they must have some confidence. No one is stupid enough to directly question other people's scientific research materials without seeing anything.

Mia von lehart: "K8 armor is a new type of ceramic composite armor successfully developed by Thyssen company."

The structure of ceramic composite armor is similar to that of cream sandwich biscuit. The panel layer is alloy steel with high hardness, and the base plate layer is alloy steel with strong toughness. The middle layer is composed of many ceramic balls, and the gap between the balls is filled with glass fiber reinforced resin.

When a menacing armor piercing bullet passes through the layer of "sandwich biscuit", the warhead has become blunt and consumed a lot of energy. Then, the stronger ceramic ball in the middle layer decomposes and dissipates the main impact force of the warhead. Finally, when the armor piercing projectile that has lost a great part of its energy hits the high toughness inner plate, it has no armor piercing ability. This is the wonderful use of "sandwich biscuits".

Hearing this, everyone felt incredible as a vehicle manufacturing engineer. Of course, I know ceramic composite armor, and many people have seen the British "chobam" ceramic composite. That's an armor piercing projectile that can block the firing of a 120mm cannon 2000 meters away.

But the weight and thickness of ceramic composites are not suitable for ordinary military vehicles at all. After all, the thickness of tanks is not comparable to that of ordinary vehicles.

Bao Zixuan: "Dr. lehart, is this K8 ceramic composite different from others?"

At this time, I don't want my subordinates to ask, and many people don't dare to ask more. After all, asking questions means ignorance. Don't want to expose weaknesses in front of the boss, especially when there are outsiders.

Mia von lehart thought there were things you didn't know. Didn't you always think you were a genius before! We can take advantage of this opportunity to let baozixuan see the ability and technical strength of German engineers.

Baozixuan is an absolute authority in titanium alloy, and slightly worse in aluminum alloy; However, we basically understand that after all, these two materials are mainly used in the aviation field. As for other alloy materials, they are black in their eyes and don't understand at all. After all, they don't graduate from relevant fields and haven't been in deep contact with them in previous lives.

Mia von lehart: "K8 ceramic composite is improved on the basis of tank armor. Compared with the ceramic composite armor materials used in traditional tanks; He is lighter and thinner. "

"Although the corresponding anti strike capability is weaker, it can fully meet the technical requirements of the U.S. military for new military vehicles."

"Only 2 cm thick K8 ceramic composite armor can resist the direct attack of 40 mm artillery. Specifically, it is designed for the Soviet Union's 40 rockets, which can definitely increase the survivability of passengers on the battlefield. "

Hearing this, baozixuan felt that the Germans had made some efforts. Large scale application has been taken into account when developing materials, which is very targeted.

40 rocket is absolutely famous. People always call AK-47, RPG rocket and 107 mm rocket as the three artifact of world guerrilla warfare. RPG rocket launcher generally refers to RPG-7 40mm rocket produced by the Soviet Union.

As a classic weapon produced by the Soviet Union, its structure principle is very simple and very suitable for large-scale production.

The power device of the rocket includes two parts: the tail tube propellant and the main engine. The rocket barrel adopts a needle type firing mechanism, and the six small holes at the tail are the spray holes of the main engine. The rocket has an ignition hole at the lower part of the engine nozzle, which is equipped with primer. At the same time, the bullet body is provided with a positioning tenon, and the front port of the rocket barrel is provided with a positioning notch. When loading, By clamping the positioning tenon of the rocket into the positioning notch of the barrel, the firing mechanism can be used to target the ignition hole.

Baozixuan still had some concerns, so he directly asked, "ceramic and metal materials have high hardness and low density. However, its tensile capacity is small, which means that armored ceramics can not bear large bending stress. How to solve some special parts, please ask Dr. lehart to give the answer. "

Hearing this, Mia von lehart thought that baozixuan was very accurate. Although I didn't come from studying basic materials, I really covered a wide range of knowledge. Fortunately, I was prepared, or I would be ashamed.

Mia von lehart smiled and said, "Mr. Bao has a good point. Ceramic materials do have this problem. However, Thyssen has developed a resilient backplane to solve this problem. You can process any shape of K8 composite armor you want. Don't worry at all. "

Since the processing is no problem, the performance is so superior; Then only the price remains. As long as the price is reasonable, there should be no problem with the car.

Bao Zixuan: "how about the cost of materials? The price is too high to be popularized."

Good materials mean rare, otherwise other manufacturers will really have no way to live. Although the US military is rich and powerful, it is not so easy to deceive. Taxpayers are always staring at them and dare not do too much.

Mia von Lehar has absolute confidence in the cost of materials. K8 material is her leading research and development, which is to replace ordinary alloy materials. The price is really not expensive. At least most enterprises can accept it.

Mia von lehart: "the material cost is equivalent to that of ordinary special alloys. The cost of the two materials is within 10 points."

I'm quite satisfied to hear that; At least the price can be accepted. Time is pressing. We can only trust the Germans at this time. With their rigorous level of technology, they should not do anything deceptive.