Landlord of the Tang Dynasty

Chapter 371
There was a sizzling sound from the boiler, and Lu Xuan stared at the boiler closely, as if he had clairvoyant eyes.Xu Qing sat on the side, took out a handful of fried broad beans and started nibbling slowly.The broad beans are noisy, not as crispy as fried ones, but very hard. A handful of fried broad beans can be eaten for a long time, often chewing out a mouthful of saliva, and the broad beans have not yet been bitten.

About half an hour passed, and there was no more sizzling sound from the boiler. Lu Xuan looked at Xu Qing and said, "Master Xu, has your, uh, charcoal burned out?"

Xu Qing babbled, swallowed a broad bean, and then said to Lu Xuan: "Mr. Lu, after the boiler cools down, turn on the furnace again."

After waiting for another half a stick of incense, the outer wall of the boiler could already be touched with hands, Lu Xuan looked at Xu Qing again and said, "Master Xu, where is the furnace full of green fire?"

Xu Qing smiled and said: "Mr. Lu, don't be in a hurry, you have made the preparations in advance. Now you open the stove and take out the things in the stove."

Lu Xuan didn't understand, and said puzzledly: "Master Xu, what will be left in this boiler? Isn't it all ashes?"

Although he was puzzled, Lu Xuan also hoped to see the furnace full of green fire in his lifetime. Since Xu Qing had already nodded, he no longer hesitated, and asked his hands to turn on the boiler.Seeing that Lu Xuan didn't understand, Xu Qing walked onto the small bridge by himself. When the lid of the pot was opened, he thought there would be a big puff of smoke, but it didn't.Xu Qing looked into the pot and saw some slightly reflective silver-gray porous cakes. Is this coke or what?
"Hahahaha, it's been refined!" Xu Qing clapped his palms and was overjoyed, like a warlock addicted to alchemy: "Come, come, take out the thing with many holes at the bottom for me."

Lu Xuan couldn't help being more curious, suppressing his own doubts, he said: "Master Xu, may I ask what else you need to prepare?"

Xu Qing jumped off the bridge: "Mr. Lu, it's the same as usual iron making, but the charcoal is replaced with the current thing." Xu Qing said, and took a piece of coke that had just been taken out.

Lu Xuan took it over and took a look, but he still didn't understand, thinking that a practical man like him would not cry without seeing the coffin, and he would believe you only when he saw the real thing.I saw him greet other people, the guy who prepared to make iron every day.

Xu Qing reminded: "Mr. Lu, the temperature of this thing is much higher than that of charcoal. You have to be careful whether this stove can stand it."

Lu Xuan didn't reply, the fire was set up and the coke was placed at the bottom of the boiler.Xu Qing looked it over and felt that there should be a little more than a bucket of coke, and the production rate of coke in later generations is only about [-]%, so the current output should be acceptable.

Seeing that everything was ready, Lu Xuan asked, "Master Xu, what kind of sword do you want to make?"

Xu Qing was taken aback for a moment, he didn't know how much steel the coke could make, so he replied: "Mr. Lu can figure it out, I don't know how much iron can be made from this, if possible, let's make a sword Bar."

A knife is heavy for slashing, and iron needs to be added to increase its hardness, but a sword is heavy for stabbing, and it needs toughness, so it is relatively simple, and can be directly cast with steel.

He added: "If you still have a lot of upper iron, then keep it, and it doesn't hurt to use it later."

Lu Xuan just nodded without saying a word, as if speaking would destroy his mental preparation.But seeing him take a deep breath, raised his head and squinted his eyes for a while, then said: "Let's start..."

Xu Qing couldn't understand anyway, and he couldn't understand the terminology they said. He couldn't lift his shoulders or lift his hands, and couldn't help him, so he stepped back and ate broad beans by himself.

Although there is only one boiler in this workshop, there are many other things.For example, there is a row of iron guns in this square, which is not found in other places.Xu Qing walked to a corner and saw three rows of iron swords and knives hanging here, with different shapes, which should have been forged by Lu Xuan during his usual experiments.

Brushing these swords hanging upside down, hearing the sound of jingling and jingling, it was very pleasant, and Xu Qing couldn't help being a little crazy, even though the sounds had no melody.

But at this moment, the iron smelters there exclaimed: "Ah! Green fire, green fire! The furnace is full of green fire!"

For Qinghuo, Xu Qing had expected it long ago, but Xu Qing was still startled when the voice of encountering a ghost yelled out.Looking back, I saw Lu Xuan teaching his apprentices with a solemn face: "Hey, what are you calling, you don't make iron well! Bring the iron mold!"

After a while, a lever device was suddenly set up there. Someone stood on the small bridge, and with a spoon of unknown material, he went deep into the boiler to scoop out a large spoonful of molten iron.Someone put the iron mold on another workbench, and the man on the bridge used a lever to pour the molten iron into the iron mold accurately.

After pouring several spoonfuls of iron, Lu Xuan directed people to add coke and iron lumps, preparing to use the rest to smelt another pot.

Xu Qing approached the workbench, but he didn't dare to get too close. He just wanted to see it, and reminded him from a distance: "When building, it's good to use charcoal, which can increase the hardness of the surface."

Then, the molten iron in the iron mold is fixed in shape, and then turned into sponge iron, which is then shaped with a sledgehammer and a small hammer to further remove impurities in the molten iron.Then it is quenched, tempered, quenched and tempered at low temperature until the sword is in perfect condition.

While Xu Qing was watching the sword being built, Lu Xuan used the remaining coke to add some charcoal, and made some iron blocks, no, it should be steel blocks.These steel blocks are put aside for later use.Seeing that all the green fires in the boiler disappeared, Lu Xuan seemed to be satisfied, he let out a long breath, glanced at Xu Qing, hurriedly came over to meet Xu Qing and said, "Master Xu is really the God of Works of today, villain admire."

His disciples also changed their eyes when they saw Xu Qing. Their eyes were full of admiration, so they almost changed their sect on the spot and worshiped Xu Qing as their teacher.

Xu Qing helped him up and said: "Don't dare, if this method can benefit the country, then my merits are indeed immeasurable. But I can only dream, and to really implement this method, I still need Mr. Lu's help. "

Lu Xuan simply knelt down: "Master Xu, the little old man has lived for dozens of years, as long as you give me an order, my old bones will also go up the mountain of swords and into the sea of ​​fire."

Xu Qing shook his head when he heard this, this Lu Xuan is also a straight-hearted man, obsessed with iron smelting, as long as you can give him a breakthrough in technology, it is fine for him to kneel down and worship as a teacher.However, even if you are in front of a third-rank senior member who doesn't know how to work, he will still be cold.

Xu Qing pulled Lu Xuan aside again, and told him that this method was a secret of the country, and before reporting it to the emperor, he temporarily detained the people who were present today.Naturally, Lu Xuan knew the seriousness of the matter, and immediately agreed. He also told Xu Qing that the people in the workshop were actually under surveillance.

(End of this chapter)