After the mood of those craftsmen finally calmed down, Ma Chao ordered these people to continue working.

And after that, the faces of those slaves no longer had that blank and mechanical look, but everyone was very happy. Some nimble people, their eyes still rolling, seemed to be looking for something to improve the blacksmith's shop.

When he arrived here, Ma Chao also wanted to leave, but when he saw that the blacksmith who had used the blowtorch was still standing in place, as if he had something to say, Ma Chao stopped, turned around and asked, "Do you have something to say?" ”

The blacksmith heard Ma Chao's inquiry, and immediately knelt down, and Ma Chao hurriedly helped him up, and said to all the craftsmen: "In the future, all craftsmen don't have to be so polite when they see me." ”

As a result, this time, those craftsmen knelt on the ground again, and Ma Chao and Han Feng were helpless, and it took a lot of effort to let those craftsmen return to work.

"Young master, the villain found that our quenching process could be improved, so he ......" The blacksmith still didn't dare to get up, but he spoke sharply.

"Oh, there's such a thing, get up, talk to so-and-so." Ma Chaodale: It's not that we people don't have creativity, but we haven't explored it well. You see, doesn't this throw bricks and bricks on its own, and it immediately resonates?

"The young master invented this bellows, which can obviously increase the temperature in the furnace, and the iron will melt faster and better. However, the water used for quenching in the forging house is only well water, and if the smelted iron is very refined, then quenching with well water will cause the iron to stiffen and bend. Therefore, the villain wondered if it could be quenched with milder mountain spring water...... "Speaking of quenching, the blacksmith's words obviously increased.

And Ma Chao is not very proficient in ironmaking, but he also knows what the blacksmith means.

That is to say, when quenching with ice-cold well water, because the cooling speed is relatively fast, the hardness of the iron block is very reliable, but it is easy to break; When quenching with mountain spring water, because the cooling rate is relatively small, the iron is not easy to crack and deform, and has a certain toughness.

However, if the mountain spring water is used for quenching, the hardness cannot be guaranteed. The key and know-how are only mastered by craftsmen through proficiency.

The blacksmith probably discovered that the quenching of well water would cause the blade to be easy to break, so he thought of quenching it with mountain spring water.

"What you just said is very reasonable, but have you ever thought that if you quench it with mountain spring water, it may not be able to guarantee the hardness of the blade, so wouldn't the gain outweigh the loss?" Ma Chao said his problem, expecting the blacksmith to solve it.

However, the blacksmith had not even tested the quenching of mountain spring water, so how could he have thought of this? However, the blacksmith was really a talent, and after thinking for a while, he said: "The well water gathers the essence of the moon, and the mountain spring water is beautiful in the sun. In this way, maybe you can get a hard and resilient blade? ”

Ma Chao is not an omnipotent science madman, but when he heard this craftsman talk about quenching, his mind suddenly moved, and he thought of a TV plot: In "Thirteen Provinces", the Qiao family's anti-Japanese war broadsword is quenched with horse urine The effect is quite good, and it can easily cut the sword......

Animal urine?

I seem to have heard of some double-liquid quenching, yes, this blacksmith said that the first use of well water, then the use of mountain spring water, does not mean double-liquid quenching...... I remember reading it in a novel, saying that it was the steps to build a weapon......

Ma Chao frowned and thought hard, there was a paragraph in his mind, but he couldn't think of it. And the blacksmith on the opposite side seemed to be thinking, and for a while, the two of them looked at each other with big eyes and small eyes, as if they had been infected with a demonic disease.

Pig iron and wrought iron are practiced together, and a few nights are made into steel...... The soft iron is used as the spine, the urine of the five animals is bathed, and the fat of the five animals is quenched......

That's right, it seems like that!

Ma Chao suddenly remembered, clapped his hands and said to the blacksmith: pour the liquid pig iron directly on the wrought iron, melt it several times to carburize the iron, and then use the force to forge it repeatedly to precipitate impurities, refine and uniform grains, make the sword tough, and finally use the double-liquid quenching method - that is, quenching with animal urine and fat, so as to increase the performance of the sword, and even sharpen the iron like mud. Moreover, the sword forged in this way will have peculiar lines on it, sharpening iron like clay, and it is very powerful!

"Pig iron poured on wrought iron? With animal urine? The blacksmith had never heard of this method, and was a little dazed: "Young master, is this feasible?" ”

But Ma Chao didn't care about this, and said majestically: "Regardless of whether it works or not, you try it first." If it doesn't work, we're thinking of other ways to improve. While walking back and forth, Ma Chao admired himself: It seems that the future iron smelting and forging industry in the late Han Dynasty will be carried forward in the hands of my Ma and create another miracle!

"By the way, what's your name? Did you make all these thoughts? Ma Chaole looked at the blacksmith who was already a little stupid, and he already had the heart to promote this quite creative blacksmith.

"The villain's name is Yuan, because he is a slave, he has been stripped of his surname, and he doesn't dare to mention it again. As for those ideas, they are all villains' thoughts, and if they are useless, I hope the young master will not blame them. The blacksmith heard Ma Chao's inquiry and hurriedly replied.

"How can I blame you, just based on your thoughts, I decided to get rid of your slave status! Your previous last name can still be crowned! Ma Chao immediately announced loudly, so that the eyes of those craftsmen who were still working were shining, and they slapped their heads: Why can't he think of some useful methods for his iron and wood pimple head?

"The villain's original surname is Pu, a person from Shuzhong." The blacksmith immediately said his surname, kowtowed with a grateful face, and shouted: "Pu Yuan has thanked the young master Hongen, and there is no way to repay you as a cow and a horse in this life!" ”

"Don't talk about being a cow and a horse, from now on, you will no longer be a ......" Ma Chao still wanted to continue to show his generosity, benevolence, and discernment, but halfway through his words, he suddenly stopped and asked in an unbelievable tone: "You said your name is Pu Yuan?" Pu Yuan, an iron master who has built three thousand divine knives for Zhuge Liang? ”

"The villain is indeed Pu Yuan, but who is Zhuge Liang that the young master said? What's the deal with the Divine Knife? Although Pu Yuan still looked grateful, when he heard Ma Chao's tone, he couldn't help but feel a little guilty in his heart: This young master can't be so happy that he is talking nonsense, right? What he said before doesn't count......

"Oh, it doesn't matter, from now on, you don't need to work yourself, I will make you the blacksmith eunuch, and you will be responsible for the smelting and forging in the forge house in the future." Ma Chao smiled, and suddenly increased his bargaining chips, intending to hold this future iron master firmly in his hands.

And Pu Yuan didn't know his value at all at this time, and after hearing Ma Chao's reward, although he knew that he might have ascended to the sky in one step, he still asked tremblingly: "Young master, what is this blacksmith eunuch?" How much temperature does the furnace need to be refined? Is there any need for two-liquid quenching......

Han Feng was so angry on the side that he couldn't wait to pat Pu Yuan's elm head: "That blacksmith eunuch is the official of the county guard, that is to say, you will be the same as a certain person in the future, and you will also be the one who eats the imperial grain!" ”

"Huh?" Pu Yuan suddenly heard this and fainted. And the blacksmiths next to them, many of them also shouted: it turned out that these people didn't believe that they could really be officials, and at this time, Ma Chao punched out, which made them fall into a state of chaos, except for those who were dizzy, the others were either burned or smashed by iron......

"Cut, with this psychological quality, what about the greatest ironsmith in the late Han Dynasty......" Ma Chao pursed his lips and said disdainfully in his heart.