"Xiaoyu, let me introduce you, this is Uncle Mu, who used to work in a machine factory, and I saw it many times when I was a child." Qin Zhenhua pointed to Mu Guijin and introduced him to Wang Xiaoyu.

Then, he said to Mu Guijin: "Uncle Mu, you are so naughty, Xiaoyu is my wife who has not passed the door, so I was frightened by you, you say, how to compensate?" ”

Qin Zhenhua said this, Wang Xiaoyu reacted, it turned out that he was joking!

"This is Xiaoyu? You kid, why didn't you say it earlier. Mu Guijin's tense face immediately loosened, and a smile squeezed out of it: "Xiaoyu, well, yes, the long true water spirit, Lao Qin is in the spirit of the sky, he will definitely be very happy." ”

mentioned Qin Zhenhua's father, Mu Guijin's eyes seemed to be a little moist again.

"Uncle Mu, it's a pleasure to meet you." Wang Xiaoyu obediently stretched out his hand and shook hands with Mu Guijin, Mu Guijin nodded again and again: "Since Xiaoyu is here, tonight, Uncle Mu will be the east, in a nearby restaurant, please have a meal, Xiaoyu, are you coming to the capital for the first time?" ”

"Ahem, ahem, Uncle Mu, Xiaoyu is in the capital and has been in college for three years."

Mu Guijin was bored, discouraged, everyone laughed, in the laughter, Wang Xiaoyu saw a pair of sincere eyes, those are a kind of care from the elders to the younger generations.

Wang Xiaoyu's heart was very moved, and the initial uneasiness completely disappeared.

In China, the factory is a very special combination, sometimes it will merge, sometimes, it will be separated, large factories, will have their own R & D room, and some research institutes, will also have their own production capacity, a few years ago, the research institute and the factory, is separated, but in recent years, the trend seems to have begun to merge again.

At the beginning, in the research and development of the second-generation tank, the tank design institute did not compete with the first machine factory for the design power of the whole machine, not because there were a large number of backbones of the first machine factory in the design institute, and they were embarrassed to grab the project, but because they themselves had higher projects to do.

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Fang Xian, the director of the design institute, sat at the front, he greeted Zhu Lao, and also sat down, and when everyone finished greeting and sat down, the meeting began.

"We held this meeting mainly for the current status of various projects." Fang Xian said: "Among them, the first problem to be mentioned first is the research on the composite armor of tanks, and we must work together to solve the problem." ”

Until now, in the domestic main battle tank, the use of the most common homogeneous armor, this armor is a kind of hard steel, in the introduction of 59 tank technology, at the same time in the grassland city, but also the establishment of a steel group, mainly for the tank production of special steel, after several years of research, the steel gradually stabilized performance, to meet the needs of tank production.

However, the days when tanks used ordinary armor steel, have passed.

No matter what kind of steel is used, the thickness is limited, and then it is not too possible, as far as the 59 tank is concerned, even if the most streamlined shape and the thickest gun shield are used, there is only a thickness of 220 mm, which is not possible to block for modern tank guns.

The tank gun of its own 59 tank, after adopting new ammunition, can penetrate it, not to mention the introduced L7 tank gun, which often has a penetration depth of more than 300 mm, and if it is a larger caliber gun, the armor-piercing ability is often four or five hundred mm.

For a long period of time, tanks are faced with a reality that the armor is not thick enough, no matter how to increase the angle of inclination, how to change the shape, in the face of armor-piercing bullets, they are all stretched, that is to say, every time the tank soldiers go to the battlefield, they are with the confidence to the death to charge.

Continue to increase the thickness? This is unrealistic, after all, the greater the thickness, the greater the weight, and after the weight of the tank itself increases, higher requirements are put forward for the engine, transmission system, and at the same time, higher requirements are put forward for bridges and the like.

Since it cannot be increased indefinitely, then, in the competition between armor and armor-piercing shells, armor has always been at a disadvantage.

It was not until the advent of composite armor that this status quo changed.

If you can't just increase the thickness, then you can think about changing the structure of the armor! Different structures are used to provide higher ballistic performance.

Among them, the most effective is the result of the Royal Armoured Research Institute in 1976, located in the small town of Chobham, England, they successfully developed a ceramic armor, which greatly increased the protection capacity of the tank.

Now, this excellent ceramic armor, named Chobham armor, has become a trump card of the British Army, and even the United States has imported its technology and equipped it with its own M1 tank.

It is impossible to expect the British to export this kind of key technology, and if they want to export it, it is definitely low-grade goods, and it is not of the same grade as their own use. After all, this equipment is the core secret of a country's army.

Therefore, the key projects of national defense must be based on self-research.

This is also a key project of the Tank Design Institute.

It is impossible for a machine plant to study these technologies, a machine plant is responsible for production, and now, the second generation of tanks being developed by a machine plant is planned to use a welded turret, in addition to increasing the internal space of the turret and moving closer to the west, there are also considerations for the use of composite armor.

Only welded turrets can use composite armor, and if the turret is cast, it is inconvenient to cast complex non-metallic armor into it. At most, when casting, it is doped with a quartz sand interlayer or something.

The prototype tank manufactured now can be replaced by ordinary homogeneous steel welded out, and various technical tests will be carried out first, but when it comes to the production stage, it is definitely necessary to engage in real composite armor.

Whether it is a second-generation tank or a third-generation tank, composite armor is a technical difficulty that must be tackled in China, and now, the research and development of these projects by the tank design institute has obviously encountered problems.

"Our design institute is conducting research and development of ceramic composite armor, but we have been experimenting for four years and have not found a suitable solution." Mu Guijin spoke, and after he left a machine factory and entered the design institute, he began to research and develop this project.

"As for how long it will take in the future, we are not sure, so it is estimated that it is impossible to use ceramic composite armor on the second-generation tank."