Tang Dynasty good brother-in-law

Chapter 191 Willow Wood Fried Steel Method

Liu Mu also explained: "Saint, once this furnace is turned on, it will never stop, continuously pouring molten iron, taking slag and refilling, the craftsmen change shifts every three hours, and four shifts are turned over every day. This furnace is a trial production, a small furnace, and a larger furnace will be improved according to the effect of this furnace."

Li Yuan was very satisfied with Li Dejian and Liu Mu's reports.

This is already very powerful, and it can produce [-] catties of iron every day.

Then it is more than 120 million catties a year, that is, 1 shi, which is already more than half of the iron output of Datang. If a few more such furnaces are built, it will reach the [-] shi that Liu Mu said.

"Sage, this needs to be greatly changed. My idea is that the molten iron is directly transferred to another furnace to produce soft steel."

The mild steel that Liu Mu said was wrought iron.

"is it hard?"

"It's very difficult to return to the saint. The molten iron is very hot, and it melts as soon as it touches a person. The craftsmen are discussing the process of the converter, and it is expected to be resolved within a month."

Li Yuan turned his head sideways and said to Peng Hai: "Order, reward."

"Yes." Peng Hai agreed.

In the second furnace, in fact, these pig iron bars that have turned dark red and are still warm are thrown in and then smelted.Datang's technology has willow coke that can burn iron into liquid, which is much easier than the previous pure forging.

Previously, pig iron was heated until it was almost melted, this can be done with charcoal.

Charcoal can produce a limited temperature, but coke can.

Li Yuan took off his silk clothes and put on an asbestos coat, then stood in the distance and watched the process quietly.

The second workshop is a converter, which can only smelt less than one hundred catties of iron at a time. Dozens of men in hardcover are constantly stepping on the bellows. This is not to heat the coke but to blow clean air from outside into the furnace.

Willow does not have the ability to blow oxygen, but it needs to blow in clean air with water mist continuously.

After several small converters worked continuously, the first batch of soft steel was finally produced.

When we arrived at the last workshop, the person who transported the iron bars put the iron bars at the door, and the people inside were responsible for transporting them in. Li Dejian walked to the door and stopped.

Liu Mu said: "Dejian, you are already a sage-appointed official of the Ministry of Industry, you have the right to come in here."

"If there is steel directly, I will reward you heavily." Li Yuan also added.

The inside of this house is much cleaner than the outside. There are all the best blacksmiths here, but without exception, they are all slaves. They are blacksmiths who were demoted to slaves after defeating Wang Shichong.

Here, they are still slaves, but each of them eats a catty of meat every day.

"Sage, the method of frying steel has been around since the Han Dynasty. It is formed by repeated forging. The second step outside of refining replaces this step. There are almost no impurities in the iron. The third step is called the method of willow wood frying."

When the name Liumu Fried Steel Method was mentioned, Liumu's face turned red.

But Li Yuan felt that something was wrong, because Liu Mu invented this method, and it was right to call Liu Mu to fry steel.

Liu Mu explained: "The saint is not named after himself, but the last step is to fry the steel with willow sticks, and then forge it into steel. It is the stick of the willow tree, the willow, not the willow wood of the minister." Willow."

After listening to Liu Mu's words like a tongue twister, Li Yuan laughed loudly: "Okay, I named it Liu Mu's method of frying steel, and I will fry it immediately for me to see."

Datang Li Yuan had already stood for an hour and a half, but he still didn't feel tired at this time, and asked to watch the whole process.

Almost pure pure iron, stirred and stir-fried with wooden sticks, will soon be poured out into red molten steel.

Three groups of blacksmiths stepped forward, raised their big hammers and began to forge.

They are all skilled people, and after a quarter of an hour, a Tang Hengdao with smooth and fine lines appeared.A master-level blacksmith stepped forward and struck with a small hammer.After another quarter of an hour, after the red blade was soaked in water, two apprentices began to polish it.

That is to say, within an hour, Yao Dejian held a newly made Tang knife in front of Emperor Li Yuan of the Tang Dynasty with both hands.

Li Yuan looked at the knife and turned to ask Liu Mu: "I think those who are guarding outside are all brilliant warriors."

"Sage, this place is unknown. Those guarding outside are Chai Shao's concubine's servant who grew up together and practiced martial arts together, named Chai Hong and his subordinates." Liu Mu reported.

"Call him in." Hearing the order, Liu Mu called Chai Hong in from outside.

Chai Hong knelt in front of Li Yuan on one knee: "Please ask the sage to order."

"Are you extraordinary in martial arts?" Li Yuan asked.

"Chai Hong dare not claim to be extraordinary in martial arts. He has practiced with Lu Guogong in Hengzhou, and he can support fifty strokes without losing."

Li Yuanxin said that he can be regarded as a master if he is undefeated in fifty strokes under Cheng Zhijie's hands.

"Look at the blade, try it for me, I'll wait."

"Yes." Chai Hong took the knife with both hands and walked aside. Someone helped to install the handle of the knife, someone brought a fine wooden pillar, and someone brought a tightly rolled mat.

Chai Hong tested his senses, practiced a set of saber techniques, and then lightly hacked the wooden pillar twice before coming to Li Yuan with the saber in both hands.

"Saint, the feeling in the hand is better than the iron knife, but the feeling on the blade is not good, and the blade is rough. The durability is definitely higher than the knives currently equipped in the army. If you want to cut it, the iron knife may not be able to cut this one. .” Chai Hong made a judgment on the knife based on his own experience.

The craftsman in charge of cutting the knife over there immediately flew over and knelt on the ground: "Xiaomin, Xiaomin."

When he heard that his knife was not good, he was so frightened that his soul flew away.

Liu Mu saluted Li Yuan, and after Li Yuan nodded, Liu Mu went over and said, "Don't be nervous, let you explain."

"Yes, yes. This is just trying to make a knife with molten iron. But I don't know how to make a good knife, so I only have the shape of the knife but no soul of the knife. The blade has not been re-forged with iron powder, and the blade has not been tempered with yellow alum. After soaking in the blisters, the knife pattern will appear. Xiaomin is at fault, and Xiaomin is at fault."

"You are right, what I want to see is this directly forged knife. Let me ask you, is the molten iron poured directly molten steel? How is it different from Baisteel?" Li Yuan asked in a gentle tone.

When it comes to professional matters, this blacksmith is a true professional.

"Reply, answer. This is very close to [-] steelmaking. Xiaomin thought that if I was proficient, I could surpass [-] steelmaking after changing the furnace. But, but... But this process is too complicated, and it takes at least dozens of trials to succeed. Improve a little bit." The craftsman stammered nervously.

Liu Mu asked himself for instructions in front of Li Yuan.

After getting Li Yuan's consent, Liu Mu said to the craftsman: "Don't be nervous. It is a great achievement to be able to produce hundreds of steel smelting by three times of iron smelting within three years. Now let's do a good job in soft steel, and be able to make rough steel. 20 Prepare [-] pairs of horseshoes within a day, and train [-] people who can make horseshoes and nail horseshoes, and I will arrange a wife for you."

　This method of frying willow wood and steel does exist in history, and I have used it in another book.

　　It's a good way to use it, and I don't care about using it more than once.

　　By the way, this is a scheduled update again. It will be a busy day after dawn, so it is scheduled in advance.

　　
　
(End of this chapter)