Myth Daqin: Married Susu at the Beginning

　　This is done by using charcoal as fuel and smelting raw iron ore into solid sponge-like lumps in hot furnaces.

　　After the furnace is cooled, it is taken out, and this piece of iron is called block (bgdi) ironmaking.

　　Block iron has low carbon content, soft texture and more impurities.

　　But this is the wrought iron that human beings practiced in the early days.

　　If you use block iron as raw material, heat it in a carbon fire to absorb carbon to increase its internal carbon content.

　　Then, after repeated forging, the impurities are removed and carbon is infiltrated, so that steel is obtained.

　　And this kind of steel is called block iron-making carburizing steel.

　　But the quality of this steel is not good enough.

　　The reason is that the amount of carbon infiltration in the refining process, whether the distribution is uniform, and the degree of impurity removal are difficult to grasp, and its production efficiency is extremely low.

　　Then people will consciously increase the number of folding and forging when they pass through the iron making.

　　A piece of steel often needs to be burned and burned, repeatedly, even hundreds of times, and this is steelmaking.

　　The carbon content in the steelmaking process is relatively high, the structure is more fine, and the composition is more uniform, so the quality of the steel is improved.

　　Later, it was mainly used to make treasure knives and swords.

　　Then in the Western Han Dynasty, a new steel-making technology appeared in China, which was called fried steel.

　　This is a new type of steelmaking technology developed on the basis of the previous pig iron smelting and casting technology.

　　The basic method is to heat pig iron into a semi-liquid or liquid form.

　　Iron ore fines were then added to it while stirring continuously.

　　Part of the carbon in pig iron is removed by using iron ore fines and oxygen in the air.

　　In this way, the carbon content in pig iron will be reduced,

　　After the slag is removed, steel is directly obtained, which is the technology of frying steel.

　　And what Su Wen just wrote is a more advanced method of pouring steel.

　　This method comes from the Northern and Southern Dynasties.

　　The main method is to use the characteristics of high carbon in pig iron and low carbon in wrought iron.

　　After the pig iron is melted into a liquid, the molten pig iron is poured over the wrought iron to change its carbon content.

　　This produces steel with high hardness and good properties.

　　This method can not only greatly improve the quality of the steel, but also greatly increase the output.

　　The most important thing is that, for now, it is easy to make it with Daqin's craftsmanship, and it can even be mass-produced.

　　In this way, the weapons of the Qin Dynasty can be updated.

　　It will surely play an extraordinary role in the subsequent expedition to the west.

　　Ying Zheng picked up the paper and carefully looked at the words on it. The more he looked back, the more joy appeared on his face.

　　Although he doesn't know how to make steel, he can naturally see it with his eyes.

　　I don't know how many times this refining method has improved compared to his previous Daqin craftsmanship.

　　The most important thing is that he can see that the above method is extremely simple.

　　Once used, Daqin can be mass-produced.

　　At that time, all the equipment of the Daqin warriors can be replaced.

　　With powerful equipment, the Huns and Baiyue are all dishes on the chopping board.

　　This also made his self-confidence in the West Expedition even more.

　　For a long time, he suppressed the excitement in his heart and asked respectfully towards Su Wen.

　　"National teacher, I don't know, how many kilograms of steel can be produced in one year.".

Chapter 145

　　Hearing Ying Zheng's words, Su Wen turned his attention to him and said after thinking for a while.

　　"As far as Daqin's current situation is concerned, this steel can produce [-] catties per day."

　　When he finished speaking, Ying Zheng's face suddenly filled with joy.

　　"What? With an annual output of [-] catties?"

　　But then he was stunned for a moment, and realized that something seemed wrong.

　　He recalled Su Wen's words repeatedly in his mind, and then he asked uncertainly.

　　"Guo, national teacher, what did you just say is the daily output of [-] catties?"

　　Su Wen nodded, he felt that it was indeed a little less.

　　But as far as Daqin's current situation is concerned, this is already extremely good.

　　Even if it is not fully popularized, it can at least replace all the equipment of the Qin army within a year.

　　Replacing the softer bronze sword with the extremely hard Hundred Steel Sword will definitely improve its combat effectiveness by more than a little.

　　After the technology is more proficient, it can be applied to other fields.

　　It can be said that after that, Daqin's technical level and comprehensive national strength will definitely reach the top of the world.

　　When Su Wen's words came out, the shock in the hearts of the ministers in the audience could no longer be contained.

　　"You, did you hear it? The national teacher said that the metal that is harder than pig iron can produce [-] catties in one day."

　　"[-] catties, it's impossible, it's pig iron, and our Daqin's annual output value is only [-] catties."

　　"What kind of character is the national teacher? That is an immortal. The national teacher said yes, then absolutely yes."

　　......

　　At this time, Ying Zheng only felt that he was stunned by the sudden surprise.

　　Pig iron smelted in the past had little output and could not be popularized.

　　The second is that there are too many impurities, and the effect of making weapons is not very good.

　　But now Su Wen has created a method that can make thousands of pounds of material much harder than pig iron in one day.

　　He seemed to have seen Daqin standing on top of the world.

　　And all this is brought by Su Wen.

　　Invisibly, the respect in his eyes became a little heavier.

　　The national teacher is not a god-like figure, and he can solve any problem.

　　With these materials, the strength of his Daqin warriors will definitely be improved.

　　No wonder the national division said that to improve the strength of its cavalry, it is necessary to start with equipment, which seems to be this.

　　Thinking of this, Ying Zhengman said excitedly.

　　"National teacher, with this hundred steelmaking, my soldiers in Daqin can have more handy weapons, so that our odds of winning have increased by more than 3%."

　　"I will immediately order someone to build some steel-made swords."

　　Seeing Ying Zheng stand up, Su Wen was speechless for a while.

　　Where did this come from?

　　Although the appearance of steel swords will indeed enhance the combat effectiveness of Qin soldiers.

　　But that is only to increase the combat power of the infantry.

　　If you encounter the Hun cavalry with superb riding skills, it is still not enough to see.

　　So he said angrily towards the excited Ying Zheng.

　　"What's your hurry, I haven't finished yet."

　　Hearing Su Wen's words, Ying Zheng was also taken aback.

　　To be able to come up with this kind of material, he already felt extremely incredible.

　　It never occurred to him that it wasn't over yet.

　　He desperately suppressed his emotions and asked tentatively.

　　"National teacher, isn't this steel sword the equipment that can improve my Xiongnu's combat power? Is there something else?"

　　The ministers under the stage also looked at each other at this time.

　　In fact, they felt that it was the immortals who could make this kind of metal many times harder than pig iron.

　　Not to mention, the daily output of these metals can reach [-] catties.

　　This is definitely an extraordinary help for the strength of the entire Daqin.

　　Now, listening to Su Wen's meaning is not over yet.

　　This added a little more to their already excited mood.

　　Su Wen looked around at everyone, then moved his gaze to Ying Zheng and said.

　　"What I just gave you is just the refining method of Hundred Steelmaking."

　　"This material can indeed be used to make weapons, but don't you think that with these weapons, you can attack the Huns unscathed?"

　　In fact, if only a hundred-smelting steel sword can defeat the Huns.

　　However, the losses since then are much less than before.

　　But don't forget that what he wants to build is an invincible cavalry that can span the entire Asia.

　　What is a steel sword alone?

　　Ying Zheng was stunned for a moment, and then responded.

　　"National division, according to my estimation, the replacement of the steel sword will at least increase the strength of our Daqin army by 3%."