Since ancient times, talented people have been born in the Red Chamber

Chapter 439 It depends on how lucky you are to fry steel? (first update)
Chapter 438

One blast furnace can increase the production of 600 catties of pig iron, and the Wu family smelting workshop has a total of six blast furnaces. After such a careful calculation, it can increase the production of more than [-] catties of pig iron in one day.

The abacus in Master Wu's heart was crackling, as if he heard the sound of the wonderful copper plate hitting.

"The quality of these pig irons is quite good, with very few impurities. Come on, you guys get a few pieces of iron over there. I will do it myself today, and try to see if I can fry good steel." The chief craftsman of Wu's workshop After the old Liu Tou greeted shopkeeper Wu, he turned his head and shouted at the young strong men.

"Okay..." After the young strong men nodded, they picked up a few pieces of pig iron that had almost cooled, and the metallic luster could already be seen, and walked not far away. Over there, a craftsman Sprinkling new coke on the furnace, and then aligning the air blower of the hydraulic blower, and then started a new round.

The so-called frying iron is the steel frying method called by later generations, which is to heat the pig iron until it is melted or basically melted, then stir it in the molten pool, and use the oxygen in the air to remove the carbon and oxygen contained in the pig iron.

In the absence of chemical analysis in ancient times, it was difficult to control the carbon content in fried steel products at an appropriate level.

The quality of fried steel requires high technology and rich experience.And this gray-haired old Liu Tou is the number one master of steel frying in Wu's shopkeeper's family.

"This old head Liu is the biggest treasure in our workshop. Only he can directly fry pig iron into steel." Seeing the doubts on Wang Yang and Zhao Ji's faces, the shopkeeper Wu chuckled and said yes. Don't hide it, anyway, Wang Yang is now a shareholder of the workshop. As for the other one, he is His Royal Highness, so naturally there is nothing to worry about.

"Oh, then I really want to see and see, but shopkeeper Wu, since you said he can fry steel, why does our workshop only produce so much steel in one day? And most of them are soft steel..." Wang Yang couldn't help asked with some doubts.

Shopkeeper Wu explained with a helpless smile. "There is no way. Using pig iron to fry steel does not mean that good steel can be fried every time. It depends not only on eyesight, strength, but also on the right time and place..."

Hearing this, Wang Yang couldn't help but wanted to complain, should he still have to check the direction and be lucky?

"Ordinary craftsmen can only fry wrought iron at most, and occasionally can fry some soft steel. But only Lao Liutou can always fry soft steel five or six times out of ten times, and occasionally can fry Fried fine steel."

Wang Yang nodded, he understood, as expected, he could only rely on luck. Sure enough, after the old Liu Tou stood in front of the stove, he bowed around as if praying to God and worshiping Buddha. Several young craftsmen next to him Also follow suit.

Well, science and superstition really coexist harmoniously here.Wang Yang was speechless.And then, under the blowing of the blower, the pig iron block placed on the stove began to turn red slowly, and then gradually softened.

Following the old Liu's yelling, the two apprentices began to stir with tools, which were made of wrought iron.

With the stir-fry again and again, it looks like stir-frying, but the firepower here is far more than that of stir-frying.

Even Wang Yang, who was standing three steps away from Naye Iron Stove, could still feel the scalding heat rushing towards his face, but Zhao Ji ignored the heat and stood one step away from the old Liu head, watching His eyes were shining, and he looked very eager to try.

Almost two quarters of an hour passed before the old Liu head let out a stern voice, finally calling it a day.

After the steel bars pressed into strips cooled down, shopkeeper Wu skillfully picked up a piece, first rubbed the dust with his fingers, and then rubbed it on it for a while, then carefully looked at it under the sun for a while, Only then did he reveal a bright smile.

"Okay, okay, okay, old Liu, you made another contribution today, and you actually got fired, not bad..."

Wang Yang walked up to look at the steel bar, tried the feel, um...it's so thick and heavy, I really can't test it, but after being rubbed, you can see its firmness. The bright metallic luster should indeed belong to steel, not wrought iron.

After testing, this is not mild steel, so it is naturally listed as good steel, and then the shopkeeper Wu collected these high-quality steel materials. After all, the prices of high-quality steel materials, wrought iron and pig iron are absolutely It's very different.

And after that, the old Liu head man frantically performed two more stir-fried steel, but these two times, only wrought iron was fried.

Even so, this kind of wrought iron with very few impurities has been unanimously affirmed by all the craftsmen, and the old blacksmith Chen who followed along to join in the fun believes that it is possible to create an extremely high-quality wrought iron with such a wrought iron bag sandwiching the pig iron bar. Good steel knife.

But Wang Yang seemed to remember something at this moment, walked quickly back to the room where everyone stayed together just now, picked up a pen, and began to write a few rows of Arabic numerals on a piece of clean rice paper.

Curiously, Zhao Ji, who came to the room with the former Wang Yang, looked at the things written by Wang Yang in a daze. "Sir, what are these things you drew?"

"These are Arabic letters, which were passed down from Dashi to count..." After Wang Yang replied, he closed his eyes and began to think hard about the memories in his mind.

Soon, he found that familiar memory. Those with a carbon content of less than [-] percent are called proficient, while those with a carbon content of between [-] and [-] percent Between [-]% and [-]% is called cast iron, also called pig iron.

No wonder the ancients would use pig iron and wrought iron to do some steel pouring or steel cladding.

"I see, I finally understand..." Wang Yang patted his forehead with a face of enlightenment.However, his face turned bitter again.

Although the carbon content of wrought iron is already known, the range of carbon content of pig iron is too large. In this way, it is very difficult to grasp. No wonder the ancients could only rely on experience.

But with Wang Yang, a scientific madman, even steelmaking, what's the difficulty?
In addition, Wang Yang is very dissatisfied with the current steel frying platform, including their smelting furnaces that must be remodeled.The steel frying table should be separated in space to prevent the carbon in the coke from reentering the pig iron being fried, so as to shorten the time for steel frying.

In addition to this method of frying steel, Wang Yang decided to try the clamp pot steelmaking method.The graphite tong pot made of graphite and refractory clay was placed in a newly built small furnace.

This is a small blast furnace, not more than one foot high. It is a small experimental furnace specially built for Wang Yang's pincer-pan steelmaking method.

"You only need pig iron and iron ore powder, so you can make steel directly?" These days, he has been following Wang Yang, and he has learned a lot about smelting. He has learned a lot about the method of frying steel and pouring steel.

(End of this chapter)