Five days later, Blacksmith Camp.
Liu Yu's eyes were bloodshot and red, but there was no trace of tiredness on his face. Now his entire face was burnt black by the fire, and only these red eyes were left on his face. , still staring at the cyan furnace and the red, knife-shaped steel block above the iron furnace.
Kong Jing on one side was already naked and was pulling the bellows by himself, while Mao Qiu was holding a few black briquettes in his hand, nervously looking at the fire in the furnace, his hands trembling slightly. .
With a "bang" sound, a piece of briquettes in the furnace exploded, and a few sparks burst out and hit Liu Yu's body. A few wisps of light smoke suddenly appeared, and the color of the fire in the furnace also changed from red to green.
Liu Yu suddenly jumped up and shouted: "Now, throw the graphite ball!"
The few coal briquettes in Mao Qiu's hand were quickly thrown into the furnace, and they were immediately engulfed in the raging flames. The color of the fire in the furnace suddenly turned pure green, and a heat wave that could almost melt people hit his face. , it can literally set people on fire!
Liu Yu flew up with his kick and kicked the iron door of the furnace closed. Kong Jing on one side gritted his teeth and glared and blew hard, at least twice as fast as before. As his movements suddenly accelerated, the entire blacksmith shop Just like the crater of a volcano, the sweat on a person's body evaporates as soon as it breaks out.
Without saying a word, Liu Yu kicked the stove door shut and picked up a big hammer. Mao Qiu and Feng Qian picked up a pair of big pliers and clamped the red-hot piece on the stove tightly. Steel block, but if you look carefully, you can find that this entire blade-shaped steel bar is actually divided into two parts. The layer of the blade is about three or four inches thick, which is different from the material of the entire blade and back. Even the color that turns red after being heated is different.
Liu Yu picked up the sledgehammer and began to pound the two pieces of steel continuously. The fur ball flipped the edge of the blade and lifted it to the center of the iron stain. Liu Yu's arm muscles followed his pounding. After hitting it a few times, the fur ball will continue to take the knife-shaped red steel back to the stove to heat it. Some black things can be vaguely seen, coming from the edge of the blade. It penetrates into the blade and back of the knife, as fine as particles. Feng Qian will also take a small bag of charcoal powder and follow Liu Yu and Kong Jing's instructions from time to time to sprinkle a little bit on the back of the knife.
In this way, after hammering for more than seventy times, Kong Jing stopped the bellows in his hand and said in a deep voice: "It's almost done."
Liu Yu nodded, put down the hammer in his hand, stepped forward and took the big pliers from Mao Qiu's hand, and immersed the whole piece of steel that became a knife shape into a bucket of grease on the side. In the middle, there was a "sizzling" sound, light smoke rose, the bucket of grease began to bubble, and a burnt smell of barbecue filled the entire blacksmith shop.
But the large piece of the blade still remained outside the barrel of grease. Although the large piece on the back was slowly fading away its red color, the large piece left outside still seemed to be melting. Liu Yu His hand remained motionless, ensuring that the three inches of red on the blade would not be soaked in grease. It was not until a quarter of an hour later that he lifted up the piece of steel, only to see that the back had turned green and black, and was no longer hot. The three-inch edge of the blade was still red and steaming.
Liu Yu directly put the edge of the blade into the iron furnace again. Kong Jing fired up the fire again. After roasting for a few minutes, the entire blade turned red and purple again. This time Liu Yu only pounded it slightly. After a few strokes, the blade was immersed in another smelly urine bucket placed next to it.
With a "sizzling" sound, the whole blacksmith shop was filled with the smell of lust, making people feel like they were in a latrine. Liu Yu frowned, which reminded him of the last time he assassinated the Diao brothers. The experience of drilling into manure tunnels, the smell is so familiar. This time, for the purpose of quenching, the urine of five kinds of livestock, including pigs, cows, sheep, horses and donkeys, was specially taken. I hope that this can be used to turn the blade into a steel that can be tempered a hundred times.
Liu Yu couldn't help but be lost in thought, until Kong Jing on the side said loudly: "That's it!" Then he reacted and took the piece of knife steel out of the urine bucket. It can be clearly seen that the blade has a bronze color with a faint purple light, while the back of the knife has a green-black color, which is exactly the color of the wrought iron after infiltration of charcoal powder.
Kong Jing rushed to the knife in one stride, carefully examined the color of the blade and the stripes on the knife, and kept nodding his head: "Okay, it's really great. I never expected the Xianbei people's sword-refining method. It’s so miraculous, using Baili Steel as the blade and wrought iron as the back of the knife, when mixed and refining, the charcoal powder in Baili Steel can penetrate into the back of the knife, making the wrought iron hard without losing its toughness!”
Liu Yu laughed, holding the big iron tongs, clamping the blade, and swung it hard at a fine iron armor placed next to him, and heard a "swish" sound, this piece of fine steel armor was The forged iron armor, in front of this knife, was like a piece of tofu, splitting in half and falling heavily to the ground from the chest down.
Kong Jing's eyes widened: "It's amazing. I never thought that using these five animals to quench fire by drowning would lead to such a magical weapon. It really cuts iron like clay." There was a burst of cheers in the blacksmith shop. Many craftsmen who had been busy for days and nights hugged each other excitedly and shed tears.
Liu Yu's eyes fell on the back of the sword: "When I struck the sword just now, the back of the sword didn't feel that strenuous at all, and the texture didn't change. From this point of view, this sword can cut such iron armor on the battlefield. At least twenty or thirty payments are enough to handle the entire battle!"
Kong Jing let out a long breath: "Liu Yu, you are really a gift from God to the Beifu soldiers. This sword was made by you, so it is up to you to name it. There are also these steel and wrought iron mixed together. It’s up to you to name the method of making steel!”
Liu Yu smiled slightly: "Charcoal powder is infiltrated into the wrought iron by Baidu Steel. It is similar to pouring. This steelmaking method is called the steel pouring method. As for this knife?" He pondered for a moment, "It is made by Baidu Steel. The blade is placed on the wrought iron blade, which is like a lodge. This sword is called the Bailiansu Iron Sword!"
Xie Xuan's voice came from outside the blacksmith shop along with his applause, and his figure, accompanied by more than a dozen guards, slowly walked in.
Everyone's expressions changed, and they all knelt down. After Liu Yu performed a military salute, he knelt on one knee, held the sword in both hands, presented it to Xie Xuan, and said in a deep voice: "Commander Xuan, I'm glad you have lived up to your mission." , the kind of sword that you want to make for your humble job is right here, please accept it!"
