Fall in love with the technology tree [Three Kingdoms]

When the spring rains linger, soft pen calligraphy classes are added to the school of Xiaoshulin Bieyuan.

According to Ah Sheng's original plan, it was enough for the orphans to be able to read, even if they only knew simplified characters.But reality always slapped her.Among the reading materials that Uncle Qing gave her were many cursive scripts on silk and bamboo slips of Xiaozhuan script.Ah Sheng thought that if they were sent out in the future to take charge of their own work or to spy on intelligence, they would not be helpless when encountering small seal cursive script or lack of pencils, so the calligraphy class could not be dropped.

She herself didn't know cursive script and Xiaozhuan very well, so uncle Qing taught her, and the twins learned together with the orphans.

Although not as thorough and calm as when his grandfather was around, Ah Sheng tried his best not to let himself and his brother waste time.Cultural classes and physical education classes cannot be missed every day, and time is set aside on weekends to have fun with the Xiahou brothers all over the field.They have now learned the Yuzhou dialect from the local villagers. Although Yuzhou is close to Sili, there are still certain accent differences between the dialect and Luoyang official dialect.

In addition to learning, Jiang Ai's iron smelting business has also made new progress.

After switching to a blast furnace made of clay refractory bricks and roughly desulfurized coking coal, the molten pig iron with stable smelting performance has not troubled the blacksmiths in other courtyards.Originally, blowers and shaft furnaces already existed in this period, but Asheng only made slight improvements, and then established strict production standards through temperature measurement and density measurement to prepare for large-scale smelting in the future.

The real battle is steelmaking.At this time, the so-called magic weapons are generally made of steel.Repeated forging requires a lot of manpower, and the quality of the final product depends entirely on the experience of the craftsman. This extremely low-cost steelmaking method was immediately crossed off the schedule by Ah Sheng.

She prefers to use modern methods to make steel.First remove sulfur and phosphorus from pig iron water with soda ash and calcium oxide, then reduce the carbon content in the open hearth furnace to obtain wrought iron, and finally mix pig iron and wrought iron to obtain qualified steel.

This process may last for several decades. Before that, only the method of frying steel [1] and pouring steel [2] can be used to make the transition.

The transition that Ah Sheng thinks is already very advanced in Jiang Ai's view.

"According to the master's instructions, the first batch of five daggers and thirteen long swords made by the new method are all here." In the dark room by the stream, the candlelight illuminated Carpenter Ai's excited face, and he deliberately lowered his voice. , but couldn't suppress the ecstasy in his tone, "One batch is produced, there is no waste product, and it will be completed in three days. Counting the preliminary process, it will only take seven days. However, it is as hard and sharp as the steel made by Shaofu. Master, with this method, the arming of the Wancheng Division can be expected in a few months. This matter is too important, and I dare not disclose it to others. From frying steel to forging, everything is done independently."

Ah Sheng picked up a dagger from the wooden tray and looked carefully at the candle flame.In fact, she couldn't tell the difference between the steel materials, she could only look at the lines on the dagger.Beautiful, as long as it is steel, it is born with a stern aesthetic feeling.

"The temperature of the furnace for frying steel is not low, you should come up with safety production regulations first."

Carpenter Ai was taken aback for a moment. He originally thought that Ah Sheng would first care about these sharp blades made with the new method, but he didn't expect that this was the first thing she would consider.

Carpenter Ai didn't answer right away.A Sheng raised his head in surprise: "What's wrong? Is there any difficulty?"

"No. The master... is merciful."

Ah Sheng smiled, and threw the dagger back into the wooden tray. "I'm not kind, I'm just stingy. It takes a lot of money to train a craftsman with high loyalty and proficiency."

Jiang Ai: ... He obviously thought of his lucrative monthly salary.There was no way to answer these words, and after being silent for a long time, Carpenter Ai had no choice but to bring the topic back: "I will write the regulations for safe steelmaking... and I will write it tomorrow. What does the master think of these weapons?"

"You have more experience than I do. If you say it's good, I believe it's good—"

Craftsman Ai regained his dead face.According to the pissing nature of this little master, such a casual beginning must be followed by a "however".

"—However, I will give you another idea. Alloys. Add copper, tin, aluminum, manganese to steel... Different alloy steels are different, some have higher hardness, some have stronger toughness, and some It will not rot for a long time. Control variables and do more experiments, and there may be unexpected surprises. The ancients forged swords with their bodies, which probably achieved this effect."

Carpenter Ai nodded in agreement, although he didn't know what the so-called aluminum and manganese were, but since they were put together with copper and tin, they were probably metals, so he just had to test it himself.

Asheng also thought of this question: "Elementary aluminum and manganese are probably not available. You can choose rocks of different colors, especially rocks with abnormal colors, and grind them into powder for testing. Remember to write a report to me. Density, hardness, color, toughness... must be clearly remembered."

"promise."

"Well, you go."

Carpenter Ai turned sixty degrees, and then turned back.He hesitated for a moment, then said, "I want to ask the master for someone."

"Oh? Who is so lucky to have entered Master Ai's eyes?"

Carpenter Ai was teased and didn't give a response, still expressionless: "Ding's Academy, Ah Xi."

"Ashi? Ashi..." Asheng closed his eyes, actually looking for the files of the orphans in the space, "One in the March monthly exam, 67 points in calligraphy, 81 points in arithmetic, 58 points in calligraphy, good in sports, The labor is good. Generally speaking, the grades are below average, and he has a black dog, who is withdrawn by nature and not good at speaking, and his best friend is Qin Liu."

"..."

"What do you want him for?"

"Able to endure hardship, not noisy, good at distinguishing stones."

The first two reasons are nothing, even among the servants who "can bear hardships and not make noise", there are a lot of them. The focus is on the third one: good at distinguishing stones and different ores.

This is really a godsend meal.

In the morning class on the second day, everyone had just finished their morning exercises when Aji was rewarded with an iron token in full view.

The groves in spring are lush and lush, and across a wall, there is smoke from the canteen rising, accompanied by the aroma of starch and soybean milk.Holding the token in both hands, Ah Kui stood blankly under the white wall and green tree, without giving a response for a long time.

As the children's mathematics teacher and class teacher, Mrs. Liu is also in charge of passing on the message: "The master has ordered that from today on, Aji's labor class will no longer follow the class, and he will directly enter the workshop according to this order, and follow Ai Dajiang's instructions. "

Immediately, envious eyes cast over.Although it was not stated clearly, Aji was accepted as a disciple by Master Ai.Master Ai, the one with the highest salary.Following such a master, Ah Kui has almost reserved a future position as the manager of the workshop.

"You are not allowed to miss the big class. The master said, if you miss another class by [-] points, you will be fined for three times, and your token will be confiscated."

The sweet dates are given, and the big stick is also given.Ah Kui reacted.He put away the cast iron token and nodded: "No." He didn't take the initiative to salute Mrs. Liu, not because he was rude or arrogant, but because he was really dull.

In April, it is late spring.

The days are getting longer and the weather is getting hotter.Around the tomb of Cao Teng's tomb, the herbaceous plants began their most vigorous growth cycle.Fabaceae, represented by milk vetch, blooms purple flowers among the green grass, and Cymbidium and wormwood give off elegant fragrance under the sunlight.The breeze blew past the newly engraved writing on the tombstone.

In the old Han Dynasty, Changle, the servant of Changle, entered the stele of Cao Jun, Marquis of Feiting.

A middle-aged man in green clothes with a sword came towards the wind with his servants, walked vigorously up the shallow slope, and came to the tombstone.On the plains of Qiao County, one can see far away from a shallow slope.Fields, rivers, city walls, panoramic view.

"Mr. Cao's place is really beautiful." After he finished speaking, he sat cross-legged on the grass and poured wine on the ground.

"Cao Gong, Shan Chao is dead. Ha, Wuhou, stepped on the blood of thousands of people from the Liang family to climb up to the high position of the chariot general. I am also a character when I am this guy, I didn't expect... haha, hahahaha... He laughed for a long time before stopping, "Mr. Cao, you juniors are not as good as you, far inferior to you! So what if you helped the Holy Majesty get rid of the great general. With the arrogance and lust of these eunuchs, sooner or later they will not be tolerated by the Holy Majesty. Feng Shui turns . Haha, hahaha..."

The middle-aged man got up and patted the dust on the tombstone.

"The more eunuchs I met, the more I felt the value of Mr. Cao. Mr. Cao was kind to me, and I was supposed to be there on the day of Mr. Cao's funeral. Prison, contracted illness in prison, procrastinated until now in order to recuperate, Duke Cao will not blame me."

While talking to himself, he burned the sacrificial silk, cleaned the dust, wiped his face, and walked down the slope.

The servant pulled out several brown horses from the tall grass half a man.

The middle-aged man jumped up, sat firmly on the horseback, and rode forward.And his unremarkable servants were all outstanding knights, following behind him without stopping.

The horseshoe stepped on the dust and ran about a kilometer before entering the farmland area.There are thatched huts of farmers and tenants in the fields, and there are many children playing by the roadside.Horses can't run fast in these conditions.They are not in a hurry, and there is no need to trample on the farmland.What's more, this piece of fertile land most likely belongs to the Cao family.

One of the servants dismounted, went to the village well to fill the water bag, and returned to hand it to the leading middle-aged man.The middle-aged man raised his head boldly, enjoying the coolness and sweetness of the well water.

"The sun is shining, when we pass this village, let's find a place to have lunch."

There was a uniform voice from behind: "No."

The youngest servant also took out coins from his body and said with a smile, "It would be great if I could buy meat from the farmer's house."

The middle-aged man waved his hand: "Mr. Cao's son, Cao Jugao, is watching his filial piety nearby. I've always disliked him as a coward. It's better not to disturb him."

Those who don’t like the land have no choice but to find a shade of a tree to eat dry food and drink cold water.However, the weather in spring is friendly, and it is a bit pleasant to have a picnic with the warm wind.

While eating, he heard the little knight shouting: "Look at those children playing, there is some reason for forming troops."

The author has something to say: Note [1]: Fried steel method.Put the molten pig iron in the crucible and stir it repeatedly, so that the carbon element in it reacts with oxygen to become carbon monoxide gas and is discharged, so as to obtain wrought iron or steel with a lower carbon content than pig iron.

【2】: Filling steel method.Pig iron has a high carbon content (brittle, hard), wrought iron has a low carbon content (tough, soft), and steel has a carbon content between pig iron and wrought iron, so it is hard and tough.To put it simply, the steel pouring method is to pour pig iron water on the wrought iron block, mix and heat to make the carbon element transfer from the pig iron part to the wrought iron part, and balance the carbon content of the two to obtain steel.