Inside the West Courtyard.

Uncle Ma was busy burning the fire and melting iron, and glanced at the busy Qin Huaidao from time to time, his heart was full of shock, and there was a strong curiosity, he didn't understand when Qin Huaidao would make iron, but he didn't dare to ask more.

Qin Huaidao didn't explain, he made a long crucible with clay, which could be burned underneath, and the holes were opened on both sides, and he found a carpenter in the house to make two bellows, which were connected to the holes on both sides of the crucible, and the air was blown at both ends to promote oxygen infusion, and the combustion effect was greatly increased.

After that, Qin Huaidao mixed fine sand, clay and water in a certain proportion to make a mold of the horse lance, which was divided into two parts, and deliberately lengthened the gun head a little, leaving a blood groove in the middle, which was convenient for chopping and stabbing, leaving lines at both ends of the gun body, increasing friction and making it easy to grasp.

After the mold is almost dry, the upper and lower parts are closed, reinforced, and erected, just when the molten iron is melted, poured from the end hole, the molten iron flows into the mold, and after cooling, a horse lance is made, but it is only rough billet, wrought iron, the hardness is far from enough, and there are many impurities, which need to be beaten and quenched, and then processed into steel.

Knocking and quenching is to smash it to death, the two of them go into battle together, it is softer when it is red, and the strength of the two of them is great, it is also convenient to smash it, and it will be almost the same after two hours, and then it will be smelted into steel.

Iron into steel is to increase the carbon content, too high is pig iron, too low is wrought iron, generally take 0.022-12.11 percent, depending on the need, the carbon content of the knife is higher, with quenching, tempering, you can solve the problem of too brittle, become tough, sharp.

Qin Huaidao invited Uncle Ma and others out, the next technology surpasses this era, once it is passed out, the consequences are very serious, and even cause war, although Uncle Ma is his own person, but people's hearts are unpredictable, other technologies Qin Huaidao doesn't mind passing on to everyone, even if it flows out, it is not a big problem, at most it will lose a way to make money, but the method of steelmaking is too special, and it involves a huge amount of money, so it cannot be passed on.

Put the horse lance into a long crucible, then cover it with charcoal, tempeh, and soil powder, heat it under the crucible, and pull a blower in one hand, and the charcoal heats up quickly.

Charcoal and tempeh are used for carburizing, and the soil is a dispersant, the advantage of this is that the carburizing obtained by the horse lance is very uniform and stable, the carbon potential is high, and the efficiency and effect are quite good.

Until late at night, Qin Huaidao opened the crucible, took out the horse lance finger and flicked it gently, crisp, it was a familiar steel sound, to this step is still not finished, but also need tempering, tempering can be divided into low temperature tempering, medium temperature tempering and high temperature tempering, Qin Huaidao takes low temperature tempering, that is, reheating the horse lance to about 150~250 °C, and putting it into the coolant to cool after holding it for a period of time.

A certain proportion of salt and oil is put in the coolant, and this quenching can improve the physical hardness, and the key is that its wear resistance and elasticity are also very good.

Until this step, even if a steel horse lance is completed, the rest is to polish, open the front, time-consuming and laborious, and turn it back to Uncle Ma to help, Qin Huaidao concocted it in the same way, and created a sword and a three-edged military thorn, and an abstract bird was specially engraved on the sword.

Xuanniao is the totem of the Wang family, if you want to pit the Wang family, you have to give some sweetness, as for whether the Wang family will get this sword will be unfavorable to themselves, they are not worried at all, it is the people who decide the victory, not the sword.

By the time everything was done, it was already the next morning.

Qin Huaidao asked Uncle Ma to come over, and told him to go back to rest after sharpening the sword first, he was busy for a day and a night, and he was not lightly tired.

Uncle Ma originally thought that Qin Huaidao was joking, after all, he had never built a weapon, and after getting the sword, he was shocked into an immortal soldier, and he was very excited, and he wanted to stop Qin Huaidao to apprentice on the spot, but he didn't dare to shout out, and he polished it seriously.

After another day and a night, Uncle Ma finally polished the sword, the sword body was dark cyan, the whole body was smooth, smooth as a mirror, reflective, the blade was sharp, which made people palpitate, Uncle Ma's eyes were red, but he was excited, he found a scabbard and put it on, hurried to the door of the backyard with the sword, and shouted excitedly: "He'er, He'er, can the young master wake up." ”

"It's Uncle Ma, the young master woke up early, and he is practicing the method at this time." Haul came out of the backyard.

Uncle Ma couldn't go into the backyard, so he put the sword in both hands, and said excitedly: "Please transfer this sword to the young master." ”

"Leave it to me."

He'er hurriedly entered the backyard with the sword, came to the place where he practiced martial arts, and saw that Qin Huaidao had just finished practicing, so he hurriedly stepped forward and said, "Young master, Uncle Ma asked the slave to hand over the sword to you." ”

"Polished? Let me see. Qin Huaidao took the sword and pulled it out, a cold air rushed to his face, and with a light flick, like a dragon roaring and a tiger roaring, he picked up a Mo knife next to him and slashed at each other.

"When—"

Sparks splashed, a gap appeared in the Mo knife, and the sword was unscathed, completely relieved, the Mo knife represents the highest level of Datang weapon smelting, even the Mo knife can cut the gap, this sword is enough to pit the Wang family, right?

After changing into civilian clothes and having some breakfast casually, Qin Huaidao hurriedly went out and came to an arms shop, where the shopkeeper knew Qin Huaidao, greeted him, and saluted with a fist: "I have seen Xiaolangjun of Qinfu." ”

It is said that Qin Huaidao inherited the title of Duke of Qin Qiongguo, and it is not an exaggeration to call Qin Xiaoguo, but the shopkeeper's origin, Boling Cui's family, although it is a branch, or a concubine, is not welcomed in the Cui family, but it also has the pride and superiority of the gate valve, and he looks down on Qin Huaidao, who was born in Xungui, and it is polite to call Xiaolangjun.

Qin Huaidao said in a cold voice: "I heard that your weapons here are the best in the world, can you dare to compare?" ”

When the shopkeeper heard that he was not here to buy weapons, but to smash the field, his expression became more and more unkind, and he asked coldly: "You are not worse than the one who comes to compare weapons every day, how can you compare the law?" ”

"When you go to the door, you naturally come according to your rules."

"It's so good, bet a thousand taels, make a document, and the government will guarantee it, can you dare?"

"Hurry up, my master is in a hurry." Qin Huaidao pretended to urge angrily.

Once the test is successful, the value of the weapon doubles, and the Cui family is overwhelmed, so they set up a rule of one thousand taels of bets, and the shopkeeper immediately asked the guy to run to call someone.

The news of the weapon test spread quickly, attracting countless people to watch and look, Cheng Chumo, who was patrolling, happened to pass by nearby, and also rushed over when he heard the news, and asked with concern: "Brother Qin, I heard that you were injured and went to visit the house, and the housekeeper said that you are resting, and it is inconvenient to meet guests, does it matter?" ”

"I haven't healed yet, thank you for your concern."

"Between our brothers, why be polite, the brothers are all investigating, Lao Tzu knows who did it, he must screw off his head." Cheng Chumo said fiercely.

Qin Huaidao felt the other party's sincerity, sincerity, and his heart warmed, it is not bad to have such a friend, chatting a few words, several officials hurried over, and simply asked a few words whether the two parties were willing and wrote down the documents after the competition charter, both parties signed, drew a pledge, and the gambling contract was established and legal, who dared to repay the debt, the government would investigate it.

Cheng Chumo was very familiar with Qin Huaidao, and knew that the best weapons in the Qin Mansion were Qin Qiong's tiger head gun and a pair of iron shovels, but the Cui family's weapons were prestigious, so he asked with some concern. "Brother, okay?"

"Bibi will know." Qin Huaidao said nonchalantly, looked at the shopkeeper and added: "The documents have been signed, let's start." ”

"Fulfill you, go and ask the Red Blood Knife to come." The shopkeeper shouted coldly.

There was an uproar around, the red blood knife is too famous, it is said that the Cui family invited the descendants of the sword master Ou Yezi for three years, made of meteorites outside the sky, the treasure of the town store, the whole body is red as blood, so it is named the red blood knife, the competition has never been defeated, and someone offered 10,000 taels to buy.

Cheng Chumo also panicked when he heard the Red Blood Knife, and quickly grabbed Qin Huaidao's arm, lowered his voice and said, "Brother, or- I will escort you out, and no one will dare to stop you." ”

"It doesn't matter." Qin Huaidao smiled indifferently and pushed Cheng Chumo's hand forward.

The onlookers whispered, pointed, and someone said disdainfully: "The red blood knife is out, but if you want to lose, this person is simply incompetent and arrogant." ”

"That's it, this person wants to justify his weapon and wants to go crazy, right? If you can't compete with anyone, you have to find the Cui family, it's just a humiliation. ”

"The ending is already clear, there's nothing to see, let's go, let's go"