Go back to the past and be a schoolboy

Carburizing refers to the process of infiltrating carbon atoms into the surface layer of steel, that is, making low-carbon steel have the surface layer of high-carbon steel, and then after quenching and low-temperature tempering, the surface layer of the steel plate has high hardness and wear resistance, while The center part still maintains the toughness and plasticity of mild steel.

Because of its appearance, the armor protection efficiency of the battleship has been greatly enhanced.

With the same protective ability of the steel plate, the thickness of the case-hardened steel armor is only half that of the steel-faced wrought iron armor.

After the surface-hardened steel armor was put into use, the battleships and armored cruisers of various countries began to "slim down". The maximum armor thickness of the side was reduced from the original 360-457 mm to 200-300 mm, while the protection capability increased.

The saved weight is used to increase the armor protection area, from the original narrow "belt" armor belt to the "grass skirt" armor belt, and finally evolved to the "armor barrel" that takes into account both decks.

In addition to military use, Cheng Nuo can also use it to manufacture freighters, thus breaking the situation where domestic sea and domestic airlines are occupied by foreigners.

In the future, the things produced by the Academy of Sciences will be transported by their own ships, so Cheng Nuo can feel more at ease.

Well aware of its importance, Wang Tiehammer, newlywed Yaner, devoted himself to the learning and research of steel plate technology within a few days.

Because he was so obsessed, he almost forgot his new daughter-in-law.

After a long time, Cheng Nuo didn't dare to look directly at the French girl.

Fortunately, although Wang Tiehui was relatively naive, his research on steel technology was such a leap forward that even Cheng Nuo himself felt ashamed.

As long as he sailed at sea, Wang Tiehammer would stay in the house for as long as possible.

"Tie Hammer, there are plenty of new technologies, but you are the only one who can do this. It's getting late, go to rest." Through the porthole, Cheng Nuo saw that Wang Tie Chui was still fighting at night, so he quickly persuaded him.

"Understood, Professor Cheng." Wang Tiechui agreed, while hastily turning off the lights, and the materials were being packed away, as if he really wanted to take a rest.

But how could Cheng Nuo not understand him?
After speaking, he deliberately walked forward for a while, giving people the illusion of leaving.

Then tiptoe back, ready to kill the carbine.

Sure enough, as soon as Wang Tiehui turned on the light, Cheng Nuo's face immediately appeared outside the porthole, which really shocked him.

"Professor Cheng, aren't you leaving?"

"Open the door, and I'll see where you've been researching." Cheng Nuo knocked on the porthole, deliberately putting on a very angry look: "You still don't sleep so late, why don't you let me come back and take a look after you leave?"

"Okay...Okay, Professor Cheng, please come in." Wang Tiehammer shrank his head, quickly opened the door, and turned half of his body.

Strange to say, before boarding the boat, Wang Tiechui thought that there was only one person he was afraid of, and that was his old lady.

But after meeting Cheng Nuo, the old lady had to add another person behind her.

Don't look at the other party who is smiling all day long, but in fact there is a power and influence on the other party who is not angry.

In addition, now that it is indeed his own fault, Wang Tiechui's heart is full of anxiety.

Before Cheng Nuo could ask, he took the initiative to say, "Professor Cheng, did my mother-in-law complain to you? Needless to say, I knew it was him. I will settle the score with her later..."

Cheng Nuo's face was serious: "What's the matter, are you still going to be rude to him? Let me tell you, it took a lot of hard work for him to be willing to come out of his hometown and return to China with us. If you dare to be rude to him You're welcome, let's see how I deal with you."

Wang Tiechui suddenly showed bitterness: "How dare I, don't look at my mother-in-law and aunt, who are actually doing the work of carrying shells, and their strength is stronger than mine. If I really want to do it, he is the one who hit me." .”

Cheng Nuo chuckled, "Then what's the deal with the settlement you just said?"

Wang Tiechui scratched the back of his head: "Just go back and talk to her, and let her come over to help me. If she is busy, she won't trouble me. If it doesn't work, I can kneel down with her. No matter what I do, I can't delay us. big deal!"

Cheng Nuo waved his hand: "Okay, okay, let me tell you the truth, not only did your wife not complain to me, but she also covered you up. If I didn't happen to pass by here today, I would have been fooled by you and my wife." .”

Wang Tiechui's face turned red and then turned pale. Thinking of letting his wife stay alone in the vacant room when he just got married, the other party not only didn't complain, but also offered to help him with so many things, his eyes suddenly turned red: "I'm sorry for him..."

"That's right, you have to take care of your family and career." Cheng Nuo patted Wang Tiechui's shoulder and comforted him.

Wang Tiechui nodded solemnly: "I will definitely remember what Professor Cheng said."

"It's not enough to memorize well, you have to do it." Cheng Nuoyang raised his eyebrows, glanced at the documents that had just been laid out on the table, and became interested: "Tell me about the progress you have made in working overtime in private for so long?"

Speaking of what he is good at, Wang Tiehammer showed long-lost self-confidence: "Professor Cheng, the steel plate technology you provided is really amazing, even though it is all carburizing, it is better than the Harvey Gang I took over in France." Much stronger."

Cheng Nuo asked curiously, "How powerful is it?"

He took a few pieces of straw paper at random, and Wang Tiehammer drew directly on the paper: "Here, the Krupp steel uses the 'gas cementing' process, although only a small amount of chromium and manganese are used for gas carburizing and high-pressure water spray hardening. steel plate.

Actually outperforming the best Harvey steel armor, 5.75" thick Kelvin armor is as strong as 7.75" thick Harvey armor. "

Cheng Nuo knew that Krupp steel was more powerful. The battleships built in France and Italy in the early years of research and development used Krupp armor. Now that Harvey steel armor only has a market in the United States, you can see the advantages and disadvantages of each other.

Even so, he did not expect Krupp's advantage to be so great.

"The performance is so superior?" Cheng Nuo asked in surprise.

"Its potential is not limited to this. If the craftsmanship is good, it is not even weaker than a 12-inch thick steel plate, a 12-inch thick steel mixed armor, or a 15-inch wrought iron plate." Wang Tiehammer blurted out, but thinking about these data is too shocking. , and added another sentence: "The data are all written on the document, but based on my experience, the possibility of the data being true is very high."

The earliest development of ship armor can be traced back to the era of cold weapons. At that time, the Eastern turtle ship and the Western ram ship became the pioneers of warship armor protection.

However, due to the insufficient protection capabilities in the early days, early ships have always used structural designs with spikes or covered skins to resist attacks from foreign guns.

Moreover, the materials of early ships were generally wooden structures, which were easily broken by the enemy's cold weapons or gunpowder.

With the development of technology, the first battleship with an all-steel hull appeared-the "Royal Monarch", which later became a model for the design of battleships in various countries. Since then, battleships have generally adopted steel hulls.

The United States subsequently used Harvey steel on ships. The use of this new type of steel greatly increased the combat resistance of battleships.

It is against this background that Germany will soon discover a protective material that is better than Harvey steel—Krupp steel, which is also the steel technology Cheng Nuo acquired.

To be on the safe side, Cheng Nuo asked again: "Because of the movement of ships in the sea, we have to consider the power of naval guns, armor protection, speed and displacement when designing. These elements are the four elements recognized by all countries to build battleships. Big factor, can Krupp Steel meet the requirements?"

After thinking about it, Wang Tiehammer replied: "I think this armor material can replace the original homogeneous steel target plate in China. It can not only reduce the weight of the ship's armor, but also reduce the displacement of the battleship and improve the movement of the ship. Speed ​​and endurance."

Cheng Nuo nodded: "The design ideas on improving the ship's protection capability at home and abroad are all about continuously improving and improving the ship's armor protection, whether it is changing the traditional steel armor material through composite materials, or changing the ship's armor. structure to improve the anti-invasion ability of the armor,

Both require a lot of technical accumulation, and mastering Krupp steel is the beginning of our change. "

Wang Tiechui nodded seriously: "Okay, when I finish mastering it, I will definitely pass on the experience to everyone."

"Come on, but your body comes first." Cheng Nuo patted Wang Tiechui's shoulder again as encouragement.

However, while looking through the drawings, Cheng Nuo suddenly found that the calculation of some key data of the materials was half-finished and gave up. Why didn't you continue counting?"

Originally it was just a very common question, but Wang Tiehammer behaved very strangely. After hesitating for a long time, he said embarrassingly: "I will only count up to that step, and the rest will not."

"No, I look at the back... Also, it's not easy for you to master so much material knowledge in such a short period of time, and it's really difficult for you to learn mathematics." Cheng Nuo suddenly realized in the middle of his sentence Before the other party came to France, he was just a farmer who could not read a word.

Nowadays, he is already very good at talking about new materials, and it is a bit unreasonable to ask for something else.

But thinking that as a professor of mathematics, the person who studies steel materials under him is actually a layman, which is a bit unreasonable.

After thinking about it, Cheng Nuo simply said, "How about this, from now on you spend two hours every day studying mathematics with me, so as to give you a good foundation."

Thinking about the pain caused by studying mathematics at the beginning, Wang Tiechui showed a look of fear on his face: "Professor Cheng, I still have a daughter-in-law waiting for me to warm the bed..."

"At this moment, I remembered that I have a daughter-in-law. Why did you go early?" Cheng Nuo said cheerfully, "After finishing mathematics, I will personally escort you back to rest. If your body collapses, everything will be useless."

"Okay, Professor Cheng, what you said is that I will do whatever you want me to do..." Seeing that things cannot be violated, Wang Tiechui had no choice but to accept.

To Cheng Nuo's surprise, although Wang Tiechui kept complaining, he actually studied harder than anyone else.

Although what Cheng Nuo said was relatively basic, it didn't mean there was no threshold.

But when it comes to Wang Tiechui, it seems that he can master it once he learns it, and he can use it proficiently the next day, and he can draw inferences about the third one, and the progress is very fast.

Cheng Nuo also had to lament that what these Chinese laborers lack is not hard work and talent, but opportunity.

But the closer he was to home, the more timid Wang Tiehammer became.

Seeing that Wang Tiechui really didn't want to take math class, Cheng Nuo simply stopped the class and asked with concern, "What's the matter, are you feeling too close to your hometown?"

"It's kind of like that. I'm afraid that my parents won't recognize me, and I'm also afraid that I don't know what happened to my parents after being away from home for so long..." After hesitating, Wang Tiehammer said.

Cheng Nuo comforted him, "My ancestors said this many years ago. If your parents don't travel far, you must travel well. After returning home, please take good care of them."

Wang Tiehammer nodded: "Actually, I am still worried about one problem. The steel technology we are researching is too advanced, and there is no domestic foundation. If we build a factory independently, the cycle will be too long and the cost will be too high. I'm afraid we won't be able to afford it."

Cheng Nuo smiled and said, "I've already thought about what you said, and I've already thought of a solution? You don't even need to find a partner, they will come to your door on their own initiative."

Wang Tiehammer was surprised: "Is there still an offer to come to your door?"

Cheng Nuonu pouted: "It's natural, you can study with peace of mind, there will definitely be a place for you in the future, and then you can compete with our Academy of Sciences."

Although I was very curious about what Cheng Nuo was planning, seeing that he was unwilling to speak out, it must have been too late for him to speak up, so he probably couldn't figure out why if he asked.

Putting his mind at his stomach, Wang Tiechui said, "Okay, we won't steam the steamed buns to make a difference. Professor Cheng, you can take care of it."

In fact, generally speaking, there are only a few "Qin Erye" who dared to develop the machinery and heavy industry.

China at the beginning of the 20th century was an agricultural country. The comparative advantages of its early industrialization existed in traditional industries such as silk and tea, and light industries oriented to mass consumption such as cotton textiles. This made it difficult for heavy industries such as machinery to develop in a "natural order".

The support given by the Beiyang government to the machinery industry is also quite weak.

Never realizing the strategic importance of the machinery industry, the industries it focuses on supporting are mainly light industry and handicraft industry.

The same situation also happened in our neighboring country Japan. During the First World War, the development of Japan’s machinery industry also encountered the embargo of European and American raw materials. The steel industry expanded.

But by the time Mitsubishi's Nagasaki Steel Works was completed, the First World War had ended, which undoubtedly brought enormous pressure to Mitsubishi.

However, they have an expansion plan for the Japanese Navy's "Eighth and Eighth Fleet". Instead, Mitsubishi's income has rebounded, and the overall machinery industry has made great strides forward. When it arrived at Pearl Island, it was able to temporarily break the wrist with the United States.

Similar starting point, disparate ending point.

I have to say it is a pity.

"The development of an industry is inseparable from the support of national policies, and cooperation is necessary!

Especially for some shipyards with special backgrounds, it is estimated that because of the problem of steel plate materials, they are already anxious like ants on a hot pot-turn around. "

Looking at the looming horizon, Cheng Nuo muttered to himself.