The main difference between pig iron, wrought iron, and steel was the carbon content.
Iron with more than 2% carbon content is called pig iron.
Iron with a carbon content of less than 0.05% is called wrought iron.
Iron with a carbon content of 0.05%-2% was called steel.
In Li Jin Nian's current era, the concept of steel had yet to appear in the true sense.
Therefore, when she heard Li Jin Nian say that there was a new iron smelting technology, Su Fei's eyes lit up."
"A few days ago, Uncle Wei also discovered a new technique. The iron refined is not quite the same as before.”
The Uncle Wei that Su Fei mentioned was the chief blacksmith of the Ministry of Works, Wei Chunlai.
Although Wei Chunlai was only a blacksmith, he had worked in the Ministry of Works for more than 30 years. He was considered a senior, so Su Fei respected him very much.
Usually, he would call him Uncle Wei.
"Is that so?"
Li Jin Nian raised his eyebrows. He was also a little surprised.
"That's right."
Wei Chunlai said proudly.
He had been learning how to forge since he was a teenager, and it had been more than 30 years since then.
It was not an exaggeration to say that he was the grandmaster of the Dafeng iron smelting industry.
Wei Chunlai had only discovered this method of smelting iron a few days ago, and the iron he refined was somewhat different from the ones he had used in the past.
Li Jin Nian asked him to elaborate on this method of smelting iron.
Wei Chunlai explained patiently.
In his opinion, his method of smelting iron was absolutely unprecedented.
The ironware smelted in this way would become much sharper when forged into weapons.
After hearing Wei Chunlai's explanation, Li Jin Nian instantly understood what the iron-smelting method he was talking about was.
Wasn't it just the method of smelting iron, carburing, and steel-making on Earth?
First, charcoal was used as fuel, and the iron ore was smelted into a sponge solid block in the furnace. After the furnace cooled down, it was taken out. At this time, it was called block ironmaking.
Then, he used the block of iron as the raw material, heated it in the carbon fire to absorb carbon to increase the carbon content, and then forged it to remove the impurities and seep into the carbon, thus obtaining steel.
This kind of steel was called a piece of iron-smelting and cementation steel.
It belonged to the steel in its initial state.
In other words, Wei Chunlai had accidentally researched the most basic steel-making method in this world.
This was not easy.
However, Li Jin Nian was not surprised by this.
According to normal development, as long as there was an iron smelting industry, it was only a matter of time before the forging method was discovered.
However, with the level of technology in ancient times, it might take hundreds of years to go from the most basic block iron-smelting and cementation steel to the further hundred steel-smelting.
What Li Jin Nian needed to do now was to lead Dafeng's iron smelting industry into a brand new era ahead of time.
"If I'm not wrong, the iron sword that Master Wei forged using this method will be sharper, but it won't be hard enough.”
"Moreover, the production efficiency is very low. It takes a lot of time to forge a piece of iron.”
Li Jin Nian said to Wei Chunlai.
"How did you know?"
Wei Chunlai's face was filled with shock when he heard Li Jin Nian's words. He then looked at Li Jin Nian as if he was looking at a monster.
Only he knew about this matter. He didn't even tell his disciple about it.
"Because I already knew about Master Wei's method.”
Li Jin Nian said calmly.
"You already knew?"
Hearing his words, Wei Chunlai was like a deflated balloon, and he instantly became depressed.
Originally, he felt proud that he had invented a new smelting method.
However, he did not expect that this method was not his first creation.
However, Wei Chunlai quickly adjusted his emotions.
Li Jin Nian had said that he knew a new smelting method.
In other words, this method was even better than his method.
Wei Chunlai had dealt with iron for his entire life. His lifelong wish was to refine better iron.
Now, he finally met someone who might know more about ironmaking than him.
Wei Chunlai was also very excited.
Then, he began to look at the young man in front of him.
"Do you know why the iron forged in this way is not hard enough?”
Wei Chunlai asked.
He had thought about this question for a long time, but he still could not come up with an answer.
"It's mainly related to carbon."
Li Jin Nian replied.
"What do you mean?"
Wei Chunlai didn't quite understand.
"Using this method to make iron, it is very difficult to control how much carbon seeps in, whether it is evenly distributed, and the degree of impurity removal. That is why the iron refined is not hard enough.”
Li Jin Nian didn't know if Wei Chunlai would understand his explanation.
After all, this involved chemistry, and chemistry did not exist in this era.
These blacksmiths relied on their experience to forge iron.
"I see."
Wei Chunlai was enlightened. After all, he had been a blacksmith for his entire life, so his comprehension in this aspect was quite good.
"The smelting methods I've recently developed can perfectly solve this problem.”
Li Jin Nian continued.
"Lord Li, please speak."
Wei Chunlai now regarded Li Jin Nian as a master.
"I turn the iron refined in this way into steel.”
"As for the name of this method, I'll name it the steel pouring method.”
"To put it simply, it is to first melt the pig iron into a liquid state, and then pour the liquid pig iron onto the wrought iron. However, this was not enough. After several smelting, the carbon content in pig iron and wrought iron would be balanced, and then iron would become steel.”
Li Jin Nian explained the new steel-making method.
In fact, the Steel Forging Method rewarded by the sign-in system included the steel pouring method and the hundred steel refining method. However, Li Jinnian felt that the hundred steel refining method had too many drawbacks.
For example, the manufacturing efficiency was low and the cost was too high.
Because of these two points, Li Jin Nian directly passed the Hundred Methods of Refining Steel.
Not to mention that the Hundred Refined Steel could only be forged manually with carbon. Not only was it time-consuming and laborious, but it was also very difficult. Ordinary apprentices could not grasp the specific details.
In comparison, the steel pouring method was much more advanced.
"So this is how you can smelt iron."
Wei Chunlai felt that listening to Jun Moxie's words was better than reading ten years of books.
He felt that if Li Jin Nian hadn't told him about such a method, he might not have been able to figure it out until he died.
"Lord Li is really a god!"
Wei Chunlai did not hide his admiration for Li Jin Nian.
"Although the steel pouring method is good, there is also a drawback. The carbon content of the steel produced by the steel pouring method is fixed.”
"In the process of making a knife, different parts of the knife need to use steel with different carbon content. If the steel with the same carbon content is used, the knife will easily break.”
Li Jin Nian continued to explain to Wei Chunlai and his disciples.
Today, he would sow the seeds of knowledge. At that time, he could spread it through Wei Chunlai and the others. In time, the entire steel smelting technology in Da Feng would advance by leaps and bounds, ushering in a new era.
Wei Chunlai and the others listened attentively. Su Fei even took a pen and paper and recorded every word that Li Jin Nian said.
As he recorded, he looked at Li Jin Nian.
In a trance, she felt as if Li Jin Nian's body was glowing.
Because when he looked at Li Jinnian now, he had unconsciously put on a filter.
Mortals looked up to the filter of the gods.
"The problem I mentioned just now cannot be ignored. If a soldier were to use this weapon on the battlefield, and the moment they fought with the enemy, the knife would snap, and they would become lambs waiting to be slaughtered.”
Li Jin Nian continued.
"So we have to change our way of thinking. We have to use the steel made by the steel-pouring method to make the blade and the wrought iron with low carbon dioxide content to make the back of the blade. The ratio is very important.”
"A knife with too much steel will easily break, and a steel knife with too much wrought iron will have a curved blade.”
"The saber made in this way is both hard and soft, and it's durable.”
“……”
Li Jin Nian taught him everything he knew without holding anything back.
If Wei Chunlai and the others had any questions, he would ask them questions. Li Jin Nian told them everything he knew and patiently answered their questions.
Wei Chunlai and the others did not know that they had already come into contact with science.
This was also the first time science had sprouted in Dafeng.
……
Li Jin Nian was explaining the steel forging method to Wei Chunlai and the others, as well as the corresponding scientific theories.
The Chinese audience watching the live broadcast on the blue planet were shocked.
Li Jin Nian once again used his powerful strength to conquer them.
In the live broadcast room, Bing Bing looked at Li Jin Nian on the screen with admiration in her eyes.
As for Wang Han, Lieutenant General Liu Hua, and Professor Li Shuhe, they looked at Li Jin Nian with admiration.
"I've been teaching for so many years, but I've never met a genius like Contestant Li.”
"It feels like there's nothing in this world that he doesn't understand.”
"In the imperial court, he berated the empress and spoke eloquently. The few lines of poetry he said were enough to leave a mark in history.”
"He can also make gunpowder and seasonings.”
"As for this forging method, even I have only heard of it, but for contestant Li to be able to explain it in such detail, it is obvious that he knows this very well.”
"I don't think genius is enough to describe him.”
"He is a true expert."
Professor Li Shuhe gave Li Jin Nian a very high evaluation.
"I agree."
Lieutenant General Liu Hua nodded.
"To master so much knowledge and theory, not only does one need a good brain, but one also needs to put in unimaginable effort.”
Wang Han said.
Just as the hosts were commenting, a broadcast suddenly sounded in their ears.
Not only them, but everyone on Planet Blue heard the broadcast.
China's contestant, Li Jinnian, invented the steel forging method a thousand years ago. This was a world-renowned achievement in steel-making technology, which greatly promoted the development of steel smelting technology, causing China's steel smelting technology and production to leap to the top in the world.
After listening to this broadcast, the netizens in China were ready to cheer.
However, at this moment, another broadcast sounded in his ears!
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