Great Power Ship

Chapter 276 Core Technologies

"Xiaoge, why are you talking to the chief!"

Seeing the embarrassment of the troop chief who asked the question, Wen Dawei hurried forward, pretending to be angry and glaring at the technician named Xiaoge, then smiled and explained to the troop chief who asked the question: "It's like this, Chief, The composition, ratio, and sintering temperature and time of the tungsten alloy long-rod core in the first phase of the SJ-857 series test bombs are all confidential, without the authorization of the headquarters, our side..."

Wen Dawei didn't finish his sentence, but the slightly apologetic smile on his face made it clear what he wanted to say.

That is, the chiefs of the troops present were not qualified to read these things.

In fact, this is true. The United States is actually the only country in the world that can independently develop and produce high-strength alloy armor-piercing projectile long-rod cores.

Although Germany, France, the United Kingdom, Israel and other countries can also produce excellent tail-stabilized shell-piercing shells, they rely on the United States for the root technology of high-strength alloy long-rod cores.

This can be seen from the fact that relevant manufacturers in these countries provide high patent licensing fees to relevant companies and institutions in the United States every year.

And Americans have very strict control over this technology.

After all, the relevant Soviet institutions are very hungry for this technology, because once this high-strength alloy long-rod core is successful, relying on the huge caliber of the Soviet 125mm tank gun, it can easily penetrate 2000mm thick homogeneous armor at a distance of 600 meters. .

You must know that the frontal armor of the third-generation tanks that are put into production and service in the world today is only 400~500mm. That is to say, once the Soviet Union makes a technological breakthrough, any tank in the world will be paperless under the Soviet tank guns. the same.

Because of this, the Americans have extremely strict blockades on related technologies.

The Soviet Union is also eager to break the dilemma of backward armor-piercing projectile technology. On the one hand, it intensifies research, and on the other hand, it uses the traditional art of Maozi's splicing ability to create a pseudo-long-rod bullet core connected by two tungsten alloys.

It is claimed that the 125mm tank gun can penetrate 2000mm homogeneous armor at a distance of 450 meters.

In fact, it is around 380mm.

It can only be counted as being able to hit the third-generation main battle tank in front of it. Whether it can be directly destroyed depends on luck.

And this kind of key technology that made the Americans guard against death and the Soviets pursued so hard that it affected the firepower of Eastern and Western tanks was the liquid phase sintering process.

In fact, the principle of this craft is not difficult. There have been related records as early as ancient times. But if you want to be able to break a 1500mm thick homogeneous armor at a distance of 2000 meters to 500 meters like a window paper It's not easy.

The first is the ratio of high-strength alloys.

The Americans used tungsten alloy at first, but later found that the texture of depleted uranium was harder, which was almost 15% more than tungsten alloy, so they switched to depleted uranium as the main material to make long-rod bullet cores.

Under the influence of the Americans, countries such as Germany and Israel, which are capable of producing long-rod fin-stabilized shell-piercing shells, have also carried out research on depleted uranium. It was found that the strength of the alloy formed by depleted uranium is higher than that of tungsten alloy, but it will Irreversible embrittlement of the interior occurs over time.

This will lead to a significant decline in its combat capability, so it is best to use it within three years after the depleted uranium armor-piercing projectile is produced, otherwise it will be scrapped due to embrittlement.

Unless you can build a whole set of dedicated depleted uranium armor-piercing ammunition storage warehouses with constant temperature and humidity, don't even think about it.

Although Germany and Israel are very rich, they are not as rich as the United States. To produce an armor-piercing bullet, a special warehouse has to be built. Even if the military agrees, the common people are unwilling to spend their tax money like this.

There is no way but to continue on the road of tungsten alloy.

However, whether it is a depleted uranium alloy or a tungsten alloy, the liquid phase sintering process is similar, that is, some metals with a lower melting point are used to melt into a liquid at a certain temperature, but these liquids diffuse and infiltrate, and the depleted uranium or tungsten is sintered. The fine powder is fully encapsulated to achieve the perfect fusion between molecules.

The process is just like mixing sand and cement. A certain amount of water is needed to fuse, infiltrate, and mix. It is a reason why the concrete made in this way has better plasticity.

It's just that the "water" is replaced by other metal powders during the liquid phase sintering process.

But precisely because of this, a series of problems arise, such as what kind of metal powder can be used to achieve the perfect fusion of tungsten and strengthen the strength of tungsten alloy?

What kind of ratio can be used to achieve perfect results while improving production efficiency and reducing costs?
How much should the temperature be controlled at?
How much should the volume of the metal liquid account for in the total volume to achieve the fusion effect?
……

The problems derived from this series are the core of the liquid phase sintering process, the key of the key.

It’s like being a super chef with three Michelin stars. It’s no secret that you can eat braised goose head for a little money.

But if you want to learn how to do it yourself, then there is a big problem.

How many kinds of brine are there?

What is the ratio of various brine materials?

Is the color the sugar color or red yeast rice?

Do you want soy sauce and how much?
How to control the heat?Should it be boiled and simmered for three hours or six hours?Do you want to suffocate in the brine after turning off the fire? How long?
So it's no problem to eat this stewed goose head, but if you make it yourself, it will take a lot of effort!
The tungsten alloy long-rod core in the long-rod fin stabilized shell-piercing shell is also the same. It looks mediocre, and it is good to use, but without an exclusive secret recipe, you can't make it.

The Soviet Union is an example. It has been stuck in this aspect for a full ten years, but it has not figured out why.

Of course, the Zhujiang factory does not have such conditions, but it has Wen Dawei as a coward, although this product is not very clear about the specific ratio, temperature, and length of time.

However, he had been to many places and seen many things as the chief engineer in his previous life. Although he didn't know the specifics, he vaguely remembered some general areas.

During the cooperation with the powder metallurgy research group of Southwest University, I inadvertently revealed a little bit, and a rough outline came out over time. After a series of experiments and comparisons by the research group, I finally found out a mature liquid phase sintering process:

即90%钨，7%镍，3%铁的粉末配比现在JJZ—985A真空感应烧结炉中以1300摄氏度持续加热60分钟。

Then the temperature was increased to 1445 degrees Celsius and heated for 12 minutes.

This step is the most critical, because the nickel and iron in the mixed powder begin to melt completely at this temperature, forming a liquid state, whose volume accounts for about 45% of the total volume, and at the same time continue to infiltrate and completely cover the tungsten powder under high temperature heating .

Then the temperature is raised to 1485 degrees Celsius for 90 minutes. This process is to fully fuse different types of metal molecules at high temperature to form an organic whole.

In this way, after a series of quenching, tempering, annealing and forging, the processing of the tungsten alloy long-rod bullet core in the first phase of the SJ-857 series of test bombs has been completed...

(End of this chapter)