my scientific age

Chapter 218 Doubt!

Hearing this, Yu Hua knew that the heat was in place, and without delay, he took out a prepared document from the briefcase he was carrying, put it on the coffee table, and handed it to Rabe.

"Mr. Rabe, that's what I'm here for."

"Y-shaped armor steel presentation?" Rabe nodded, picked up the entire document with his right hand, and opened the first page. After seeing the name on it, his pupils shrank suddenly, and he grasped the key point instantly.

Armor Steel!
Although Rabe's career has nothing to do with military technology, he still understands the concept and meaning of armored steel.

This is the basis for the defense of the 'King of Land War' tank!

An armored steel with excellent performance can make the tank have a very good defense, so that it can win on the battlefield.

The shells fired by one's own tanks can penetrate the enemy tanks, but the shells fired by the enemy tanks cannot penetrate themselves. This is the role of armored steel.

The performance of armor steel depends on strength, purity, toughness, and plasticity.

Throughout the world, armored steel is one of the absolute cutting-edge technologies in the military field. For European armies equipped with a large number of tank troops and warships, armored steel is equivalent to the lifeblood of existence.

Rabe did not expect that he would see a document about armor steel here. The key point is that this document came from a Chinese student.

A Chinese student involved in high-end military technology?
It sounds so incredible.

"Huh..." The whole person took a deep breath, suppressing the surprise and complicated thoughts in his heart, with a dignified expression and high concentration, he opened the second page of the presentation and read it carefully.

Mechanical properties of Y-shaped armor steel——

Material hardness: 490HB,

Tensile strength: 860Mpa,

Yield strength: 580Mpa,

There is no impact toughness, and no fracture toughness.

The chemical properties are as follows-

The metal corrosion rate is about 0.01-0.1 mm per year,

Metal oxidation resistance data is not available.

Metallographic structure: martensite.

Armor penetration resistance. This parameter is affected by variables such as end point ballistics. By comparing the published performance data of Krupp KC armor steel in 1895 and Harvey armor steel in 1890, the theoretical penetration resistance performance parameters can be calculated as - -100mm Y-shaped steel is equivalent to 130mm-145mm range KC armor steel, equivalent to 160mm-180mm range Harvey armor steel, equivalent to 350mm wrought iron armor.

The degree of improvement is 130%-145% and 160%-180% respectively.

Since the latest armor steel models and formulations in various countries are currently unknown, the theoretical anti-penetration performance cannot be obtained temporarily. However, according to estimates, the theoretical performance of Y-type armor steel is improved by about 10%-13% compared with the latest armor steel models in various countries. , the end-point ballistics variable influence is about 5%.

If the cold rolling process is used, its defense performance will be improved again.

Evaluation: Y-type armored steel has excellent theoretical performance. Using a new formula, it can greatly improve the self-defense performance of tanks, automobiles, warships and aircraft. It is particularly evident in tanks and warship weapons. With the surface carburizing and hardening steel technology, the final practical Compared with the latest armor steel + surface carburizing hardening technology of various countries, the defense power should be improved by more than 40%.

It has to be said that as a paper PPT in 1937, Yu Hua's Y-type armor steel presentation is extremely beautifully written. It uses a combination of pictures and text to explain the concept and basic performance parameters of Y-type armor steel in turn, and gives The mathematical calculation process and material parameter calculation content are presented.

It can be said that except for the core formula and core production process, everything that can be revealed has been revealed.

There was a dead silence in the living room.

As Rabe read the last line of the Y-type armored steel presentation, his right hand trembled slightly, his mind was blank, completely occupied by the English letter Y, his eyes were full of incredible colors.

Shock.

sluggish.

There was even a hint of fear.

All kinds of complex emotions flooded into his mind, and then rushed to his mind like a turbulent torrent. At this moment, Rabe was in a state of extreme shock. He really couldn't believe what was marked on this presentation. various performance parameters.

terrible!
It's really scary!

The performance parameters of this Y-type armor steel can only be described as terrible.

As the head of Siemens China and the president of the German Enterprise Chinese Businessmen Association, Rabe is involved in not only the civilian field, but also the military field.

In dealing with the military field, it is impossible to bypass Krupp, the king of German military industry. Rabe is very clear about the KCn/A armor performance parameters newly developed by Krupp based on KC armor after 1928.

The KCn/A armor, which is widely used in army tanks and naval warships, is basically rolled in all directions in front of this Y-type armored steel, and the performance gap is exactly the same as the estimated data described in the article, which is about 10%.

Compared with the KCn/A armor, the Y-shaped steel is increased by 10%, and compared with the KC armor, it is increased by a full 30%-45%.

God, is this true?

Rabe couldn't believe it and couldn't believe it.

Because, if the performance parameters of the Y-beam are true and there is no data fraud, then it will be the most advanced and powerful armor steel model in the world, easily crushing all armors, making it the king of the armor steel field.

The current king of armored steel is KCn/A armor!

The development history of armored steel mainly comes from the military field. It originally originated from warships. In 1855, the armoring material used by ships was 'wrought iron'.

In 1876, France was the first to use Schneider's 'steel armor'.

By 1877, the British used wrought iron to weld the armor, and the outer steel and the inner iron were mixed, which was called composite armor. The wrought iron was used to improve the overall strength, and the performance was improved compared with Schneider armor steel.

In 1888, Britain and France developed nickel alloy steel, which was the first time in history that alloy steel was used as ship armor.

In 1891, American Harvey developed Harvey armored steel, using carburized surface-hardened nickel alloy steel. The defense capability of 6-inch Harvey armor is equivalent to 10-inch composite armor, that is, 152 mm is equivalent to 254 mm.

At the beginning of 1892, Krupp developed Krupp water steel, the performance was 15% higher than that of Harvey armor, and the research and development difficulty gradually increased.

In 1895, nickel-chromium alloy steel with surface carburizing hardening technology, namely the famous KC armor steel, was born. As soon as it was born, it rolled all the armors at that time. The protection ability of 6-inch KC armor is equivalent to that of 7.5-inch Harvey steel armor, and its performance is improved. 25%,

It can be seen that the difficulty of research and development of armored steel has gradually increased, and the performance improvement has become smaller and smaller. Every 10% improvement can be called a big improvement.

"Hua, is this Y-shaped armor steel real? Its performance parameters are too advanced... I have to question it, after all, China does not have the basis for armor steel research and development, which is the most competitive field of military technology. "

Rabe, whose mind was flooded with thoughts, finally calmed down, took a puff of cigarette to keep his mind calm, then broke the silence and looked at Yu Hua with a smile on his face: "The countries in the world that can develop advanced armored steel are almost all industrial powerhouses. ."

question!

Direct and sharp attitude.

Although the performance parameters of the Y-shaped steel on the paper roll over its own KCn/A armor in all directions, a real question is, how can you, a Chinese, develop such an advanced armor steel formula?
Rabe knows China very well. He does not have a complete industrial system, and the basic industry is weak. The annual output of steel in the country does not exceed [-] tons, and he does not have the ability to produce high-end steel products.

What is a high-end steel product?

Tank gun steel, artillery steel, bearing steel, machine tools, etc., including armor steel.

The protective power of an ordinary steel plate and an armored steel plate are completely two concepts.

(End of this chapter)