Master descends to earth

Chapter 42

Just when Su Yuan was full of thoughts, Xu Kui came back with the iron ore in his arms. Today, he was lucky and found two pieces of good quality. Looking at the strange shape in the master's hand, he asked curiously: "Master, what is this thing?" stuff?"

"You know what a fart!" Su Yuan glared at Hei Da, and said unhappily: "Stuff? This is a real treasure!"

Xu Kui curled his lips, and just about to say something, Yagyu Huimei ran over from a distance, with the bodyguard behind him holding a few pieces of ore, which seemed to be a small gain.

Su Yuan led everyone away, came to the restaurant after dinner, and casually asked Xu Kui, "Do you know that there is a sword casting workshop nearby?"

Xu Kui shook his head, puzzled, and said, "Our Famous Sword Villa can make swords, so why buy a workshop?"

Su Yuan waved his hand. Of course he knew that Famous Sword Villa could make swords, but he didn't want to reveal too many secrets to outsiders. Since he started the Five Elements Art, it's safest to own his own territory as soon as possible.

"Don't worry, you can leave such trivial matters to Huimei." Huimei Liusheng's eyes lit up, and she quickly answered: "I have subordinates who are good at collecting information and negotiating. Please wait patiently for two days, and there will be results."

Su Yuan nodded in satisfaction, this little girl is quite clever, as expected of a talent cultivated by the Liusheng family, far smarter than Big Hei.

Huimei Liusheng felt joy in her heart, and finally discovered the value of her own existence. Since she is a master, how could she bother with such trivial matters. There are business elites around her. For the Liusheng family, it is just a matter of one sentence.

Stand up quickly, go to the side to call and give the task, only one night to collect all the properties for sale in Longquan, especially the sword casting workshop, the size does not matter, and the price is not a matter.

Su Yuan put down his chopsticks, asked Huimei Liusheng to sit down, and said with a smile, "You guys go to a place with me tomorrow morning. If you guess correctly, there should be a surprise."

"Surprise? Could it be..." Huimei Liusheng had a flash of inspiration and said in shock: "Master, have you found the clue to burn the blade with soil?"

"What's so difficult about this!" Su Yuan held up his teacup, and said to himself, "As early as the Han Dynasty, the technique of burning blades with soil had already appeared. According to ancient records, the formula at that time was clay + borax + iron powder + carbon powder. Plus charcoal equal in toner content."

"As for the iron powder, it is recommended to use rust iron, and the local yellow soil of Longquan is used for the soil; borax is a kind of sodium borate sand mudstone powder. According to the current industry explanation, its function is to remove surface oxides and make the clay and the blade stick more tightly. , It is not easy to fall off during quenching, and it can also prevent decarburization of the steel surface during quenching."

Su Yuan looked at the expression of Yagyu Huimei's eyes shining, and wrote lightly: "Steel will change the crystallization method due to the increase in temperature. When the temperature reaches more than [-] degrees, it will become a special crystal. According to your words, it should be called Matian, right?"

Emi Yagyu nodded quickly, feeling extremely excited. She never thought that in just two days, she would be able to get the clue of the soil-covering and burning-blade technique she had dreamed of.

"It's called martensite here. When quenching, the fiery red sword is thrown into water or oil, and the crystallization is too late to change back due to the instantaneous cooling, and it is fixed. The crystallization is hard and brittle, and the volume is larger than the original, which is the sharpness of the sword. key factor."

"The texture of the samurai sword is also derived from this. As for the folding method, there are many methods. The common techniques handed down by you include Muzhengmu and cross, in addition to short books, Zhezimu, Konoha, etc..."

Su Yuan looked at Huimei Liusheng who was getting more and more excited, and said sternly: "Because there were no high-tech testing equipment in ancient times, so masters rely on experience and hand feeling, and the mystery is not humane!"

Emi Yagyu stood up abruptly, bowed deeply and said, "Master, please guide me!"

Su Yuan picked up his teacup, sipped tea, and said leisurely: "Do you call this kind of knife Wandu or Shudawu? Unfortunately, it can't be used in actual combat. If you want a good blade, you must properly combine steel and wrought iron to make a knife."

"Steel is hard and easy to break, and soft wrought iron must be added as an auxiliary. The wrought iron is soft and easy to bend, and steel is the backbone. It is called a compound blade or a sleeve blade. The common combination methods of samurai blades are three-fold and rolling."

"For more detailed ones, use the original three-piece combination, four-way combination, five-piece combination, etc. In addition, special iron materials are added to the easy-to-break parts of the blade. The materials of different materials are fused into one through different ancient methods to make the quality of the entire blade balanced. , can be described as the best craftsmanship."

"The soil for burning blades has its own specialties, and different schools have their own secrets. The body of the knife is covered with soil, and after high temperature, various blade patterns appear on the blade and the body of the knife. Different schools of knifework have different methods of applying soil, so the blades on the knife The tattoos are different."

Not only Emi Yagyu, but even Xu Kui listened attentively. He didn't know much about samurai swords, so today was an eye-opener.

"In my opinion, all sword casting techniques basically lead to the same goal. Whether it is the ancient method of oil quenching or burning the blade with soil, they all use high temperature to reabsorb trace elements in the sword to further improve the quality."

"Every sword is like a person, with different aptitudes and personalities, so it cannot be generalized. Therefore, how to teach students according to their aptitude is the biggest difference between a master and a craftsman."

Su Yuan concluded: "Back, back, straight, and quench, are the four fires worthy of the name!"

With those words, Liu Sheng Huimei suddenly realized, and solved many questions about burning the blade with earth, and said pleasantly: "Listening to the master's words is really better than reading ten years of books, Huimei has been taught!"

"Tomorrow, let's go to the abandoned mine of Laoxi. If we are lucky, we may find the yellow mud that is most suitable for casting swords. Not only can it be used for covering soil, but it can also be used for oil quenching. That is in line with the true meaning of the five elements!"

After sending everyone away, Su Yuan returned home, cleaned the meteorite mine with warm water, and found that the soil soaked in water was shining like gold, which was extraordinary.

gold hidden in the mud,

They are the key to oiling and covering!
Su Yuan filtered the yellow mud, carefully preserved it, and prepared a self-made quenching agent.It is planned to mix the yellow mud evenly into the special grease. The concentration can be adjusted according to the actual situation. Different steel materials use different concentrations. Different concentrations will lead to differences in the inflection point and slope of the cooling rate curve.

Now I don't have much confidence. After all, I don't have enough actual combat experience, which is also the biggest reason for buying the sword casting workshop.Close the door in the dead of night, you can try a few more times, even if you fail, no one will know, safe and secure.

Now that I have obtained the meteorite, the gold in the five elements has been dealt with. Tomorrow, I will go to the waste mine to hunt for treasure. The goal is the soil of the five elements, the treasure of raising swords hidden in the mud.

Su Yuan carefully studied meteorites. In ancient times, there were many legends about strange stones from outside the sky. According to legend, Qianlong's Nine Dragon Sword was forged from Yinghuo, and was buried in Dongling after his death.

According to historical records: In the 36th year of Qin Dynasty, Yinghuo kept his heart.There is a star falling down to Dongjun, and the ground is a stone, and the head of Guizhou may be engraved on the stone, saying that the first emperor died and the land was divided.When the first emperor heard about it, he sent the censor to question him one by one, but he refused to accept it. He took all the stones from the neighbors and punished them, and burned the stones.

When Mars invaded the heart, it symbolized disasters for the emperor. A meteorite fell in Dongjun and turned into a stone after it landed. Some people carved the words of Emperor Shihuang's death on the stone.

When the first emperor heard that he sent a censor to investigate from house to house, but no one pleaded guilty, so he killed all the people living around the stone, intending to burn the meteorite.

As a result, it was burned for several days and nights without any damage. There was no choice but to find Xu Fu to do it and suppress it underground. Later, it was dug out by Liu Bowen and dedicated to Zhu Yuanzhang.

The sword is 5 feet long, with a long hilt, and nine golden dragons are carved on it, symbolizing the unity of ninety-nine.The scabbard is made of precious shark skin, inlaid with red sapphires and diamonds, which is priceless.

Later, it was stolen by Sun Dianying, circulated several times, and its whereabouts are unknown, which has become an eternal mystery.

(End of this chapter)