The old disciple of Baigong said to Ye Feng: "Brother Ye, this is a sword-making competition. Do you know the art of attacking gold?"
Ye Feng said modestly: "I understand a little, I understand a little."
The old Baigong disciple nodded to Ye Feng, turned to the registered person and said, "This person is Baigong, I can vouch for him."
The person in charge of registration immediately changed his face and said to this person: "The testimony you gave is certainly credible."
He immediately turned to Ye Feng and said, "You have registered and you can go in. But they can't go in." The person in charge of registration pointed to Qiu Laoer and others.
Ye Feng did not hear what the person in charge of registration said, but was shocked and said: "General Mo Xie? Are you the best general in the world in making swords?"
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At this time, although Ganjiang was somewhat famous, he was not very famous yet. Ganjiang said awkwardly: "Brother Ye, have you heard of me?"
He immediately reacted and said: "Who is the best in the world? It's not easy to talk nonsense, it's not easy to talk nonsense." Although he said this, the general was still a little happy.
Gan Jiang said and pulled Ye Feng into the courtyard. Ye Feng wanted to say hello to Qiu Lao'er and the others, but Yang Yiying wanted to get rid of Qiu Lao'er and pushed Ye Feng into the courtyard.
Many people have come to the yard, all of them are strong coppersmith masters. Only Ye Feng is thin and fair, and looks out of place.
Ganjiang also noticed it and asked Ye Feng again: "I don't know Brother Ye is good at making swords~" Suddenly he felt that it was not very polite to ask, and he didn't know how to continue.
Ye Feng understood what he meant, smiled and said, "I know some formulas for Qi." Qi means alloy.
After hearing this, Ganjiang thought that Ye Feng just knew some alloy formulas and came over to try his luck, so he didn't ask any more questions.
At this time, a person in charge of the organizer came out and said: "The materials, tools and smelting and forging furnaces are all provided by the King of Yue, but all forged swords must be sold to the King of Yue."
As soon as these words came out, many people started talking about it. Some people felt that if the price was not right, they would suffer a lot.
At this time, the person in charge continued: "Don't worry about the price, it must be higher than the market price. In addition, masters are allowed to use their own tools and build smelting or forging stoves according to personal habits."
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"All material costs will be provided by the King of Yue. The competition is limited to three days. All food and accommodation for these three days will be borne by the King of Yue, including of course the food and accommodation of the entourage. Do you have any questions?"
Everyone was very satisfied with this arrangement and no one raised any objections.
The person in charge continued: "The top three selected will not only receive bonuses, but can also serve in the Yue Kingdom and be responsible for the casting of weapons. If they serve in the Yue Kingdom, the King of Yue will also have a thousand acres of land and a West Lake mansion as rewards."
As soon as this statement came out, everyone was in an uproar. Ye Feng said to himself: "I didn't expect that the King of Yue would really make a plan. The river view villa has come out."
Yang Yiying looked at Ye Feng strangely. Ye Feng noticed something strange and asked, "What's wrong?"
Yang Yiying said: "I think brother Ye Feng speaks very strangely, and he knows a lot of things. I feel like you don't look like one of us here."
Ye Feng laughed and said, "Of course I'm not from your place. I'm from the Chu country."
Yang Yiying shook his head and said, "I mean, you don't look like people from our world."
Ye Feng secretly said: "Ximata, has it been exposed?"
Ye Feng smiled awkwardly and said: "It's either a human or a ghost."
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Yang Yiying shook his head again, but quickly took Ye Feng's arm and said, "No matter who you are, I don't care."
Ye Feng was at a loss and filled his head with questions, and thought to himself: "What do you mean? Am I exposed?"
"But this little girl is indeed the sister of Edogawa's daughter Edo. She is simply possessed by Edogawa Conan. I will have to restrain myself in front of her from now on."
At this time, everyone is assigned to their own work shed, and each work shed is assigned an official to provide assistance.
Ye Feng asked him to help build a blast furnace and blast equipment designed by himself for smelting.
This set of things is the same as what Ye Feng made in Qiemo Kingdom before. Ye Feng became more and more proficient in this set of things and quickly built it with the help of official personnel.
Various metal raw materials were also sent over. At this time, most of the technology was copper alloy, so Ye Feng didn't want to bully them with steel, so he decided to use copper alloy as well.
Ye Feng had previously taught Qiemo's coppersmith master about copper alloys when he was working in Qiemo. Ye Feng learned this recipe from "Kao Gong Ji".
But the only difficulty is the chromium plating technology, because the ancient technology of chromium plating has been lost in later generations, and the chrome plating of later generations is all electroplating technology.
Although Ye Feng could make a Baghdad battery for electroplating, Ye Feng looked at Yang Yiying and thought about it before giving up.
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However, Ye Feng thought of the Japanese pirate swords from a country where he had a good life, and the steel-clad technology used, so he got an idea. In fact, the swords are not forged from the same material.
This is because a sword needs both hardness and toughness. If it is too tough, it will be too soft, and if it is too hard, it will break easily.
So the best way is to use alloys, mixed materials, and hard coating.
The first is the alloy method, such as bronze, which can be added with tin, lead, etc.
As well as manganese steel, tungsten steel, vanadium steel, molybdenum steel, nickel steel, etc., with other metals added in addition to carbon.
The second type is mixed material steel, represented by the Damascus Saber, which is forged by stacking steel with different carbon contents.
The third method is to wrap the sword body with a hard and wear-resistant material, such as steel or chrome plating.
Baogang makes swords by using steel with good toughness on the inside and steel with high hardness on the outside.
The forging method is to wrap high-strength steel around tough steel and then stack it.
Generally, the outer material has a higher melting point and the inner melting point is lower to achieve success.
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The melting point of copper is 1,083.4 degrees, and the melting point of chromium is 1,860 degrees. The melting points of the two sides are very different, so it is difficult to melt them together if they are directly wrapped.
Finally, Ye Feng came up with a way to melt chromium without heating the copper to its melting point. Instead, he inserted the copper into a mold with chromium melt, used chromium to heat the copper to its melting point, and the copper cooled the chromium so that it could fuse with the copper.
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There are three difficulties with this method. First, the blast furnace must generate the temperature to melt chromium.
Second, the mold and the bronze sword must be exactly the same, with an error of only 0.1 mm, and the chromium thickness cannot exceed 0.2 mm.
The third is the temperature to which copper is heated. It is very important to control this temperature. If the temperature is low, copper will not melt. If the temperature is high, the copper will completely turn into molten copper, and it can only be fused on the surface.
For the first puzzle, chromium can be smelted using coke and a blast furnace.
The combustion temperature of the best quality raw coal can exceed 1,700 degrees, while the combustion temperature after being made into coke can exceed 2,300 degrees in a blast furnace combustion environment.
Coal has been an important energy source in China since ancient times. Ancient Wa was the first country in the world to discover and use coal.
In the earliest times, the ancient Wa people called coal Shi Nie.
The earliest record of coal in ancient books is "Shan Hai Jing", which is called Shi Nie. There are three records in "Shan Hai Jing Wuzang Shan Jing", "Xi Shan Jing Xi Second Jing" and "Zhong Shan Jing Zhong Nin Jing".
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During the Han and Wei dynasties, coal was called graphite, from the Jin to Qu dynasties it was called coal, and in the Daguang dynasty it was called coal.
The first person in Guwa to raise the issue of the mining and use of China's coal mines was Gu Yanwu. He wrote a self-note in the 32nd volume of "Rizhilu" on the carbon strips and cited "Historical Records", so Guwa's coal mining began in the Western Han Dynasty.
The earliest written record of coal in the Far Western countries was in 315 AD, nearly 800 years later than Guwa.
The basis for the mining and use of coal in Guwa dates back to the Western Han Dynasty, according to archaeological discoveries, and coal mining in the Laoangsa Kingdom began more than 1,400 years later than in the Guwa Kingdom.
So for the first problem, Ye Feng can use coal, i.e., coal, to undergo high-temperature carbonization to produce coke, and then use a blast furnace to smelt chromium.
The method of high-temperature carbonization of coal is that bituminous coal is heated to 950-1050 degrees in isolation from air, and then undergoes drying, pyrolysis, melting, bonding, solidification, shrinkage and other stages to finally make coke.
The temperature of charcoal can reach 900 to 1000 degrees. Ye Feng only needs to use charcoal to high-temperature carbonization of coal to obtain coal. To isolate the air, Ye Feng only needs to wrap the coal with clay and burn it.
Regarding the second difficulty, Ye Feng used a slide rail to fix the copper sword on the top and the mold on the bottom. The slide rail and buckle were used to accurately determine the position where the copper sword was inserted into the mold to solve this problem.
The third difficulty can be solved based on the calculation formula of specific heat capacity, as long as the temperature of chromium release and the temperature of copper absorption are the same. Please download the latest content of the app
The specific heat capacity of copper is 0.39 times 10 cubed Joules per kilogram. The specific heat capacity of chromium is 0.45 times 10 cubed Joules per kilogram.
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That is, the mass of chromium multiplied by the specific heat capacity of chromium multiplied by the temperature of chromium is equal to the mass of copper multiplied by the specific heat capacity of copper multiplied by the temperature of copper.
The three problems are perfectly solved. Of course, the sword body is not pure copper, but a copper alloy. The specific heat capacity of the alloy is calculated based on the ratio. The calculation is too complicated to demonstrate, so I will skip it here.
Although it was theoretically possible, Ye Feng still failed twice, and it was only the third time that he made a big sword.
When Ye Feng confidently thought that his big sword would take first place, the result surprised him. His big sword ranked second, and the first place was Gan Jiang.
In the end, Ganjiang's sword was named the Yue King Goujian Sword, and Ganjiang won the title of Sword God in this competition.
Ye Feng was very dissatisfied and ran to Ganjiang's workshop to check, and found that Ganjiang used electroplating chrome technology.
Ye Feng secretly thought: "How is it possible? Is this guy also a time traveler?"
Ye Feng tentatively said to Ganjiang: "Machine gun?"
Gan Jiang looked at Ye Feng in confusion. Ye Feng gestured like he was holding a machine gun and said in his voice: "Da da da da da."
Gan Jiang looked at Ye Feng in confusion.
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Ye Feng scratched his head and thought to himself: "Not modern people? Ancient people? No, there was no electroplating technology in ancient times."
Ye Feng imitated the action of driving again, then honked the horn and said in his voice: "Beep~, beep. Beep~, beep. One long and two short."
Ganjiang came over with his hands outstretched. Ye Feng almost burst into tears when he saw this, and said to himself: "Is it Duan You?"
Ye Feng was about to reach out to shake hands with Qian Jiang, but Qian Jiang put his hand on Ye Feng's forehead and said after a while: "I don't have a fever."
Ye Feng almost vomited blood, but Ye Feng glanced at the sulfur next to him and seemed to remember something. So he asked: "Did you add sulfur?"
This was the secret of Gan Jiang's sword-making and he would not tell Ye Feng, but he did not want to deceive Ye Feng, so he did not say anything. Ye Feng looked at the materials he used to make the sword again before he suddenly realized it.
During this period, there was iron in the cast copper alloy, and by accident, burnt sulfur was put into water to make a quenching and cooling solution.
After the endless coma, Shi Yu suddenly stood up from the bed. If you want to see the latest chapter content, please download the Xingxing app, which has no ads and free latest chapter content. The website no longer updates the latest chapter content, and the Xingxing app has updated the latest chapter content.
He took a deep breath of fresh air, his chest trembling.
Confused, confused, and all kinds of emotions came to my mind.
Where is this?
Afterwards, Shi Yu subconsciously looked around and became even more confused.
A single dorm?
Even if he was successfully rescued, he should be in the ward now.
And my own body...how could I not have any injuries at all?
With doubts, Shi Yu's eyes quickly swept across the room, and finally his eyes rested on a mirror beside the bed.
The mirror showed his current appearance. He was about seventeen or eighteen years old, and he looked very handsome.
But the problem is, this is not him! Download the Star app, the latest chapter content is free and ad-free
My previous self was a handsome young man in his twenties who had been working for a while.
And now, no matter how you look, this appearance is that of a high school student...
This change left Shi Yu stunned for a long time.
Don't tell him that the operation was successful...
My body and appearance have all changed. This is not a matter of surgery or not, but magic.
He turned into a completely different person!
Could it be...that he traveled through time?
In addition to the mirror placed by the bedside, which was obviously not feng shui-friendly, Shi Yu also found three books next to it.
Shi Yu picked it up and took a look. The title of the book instantly silenced him.
"Essential Animal Breeding Manual for Beginner Breeders"
"Postpartum Care of Pet Pets"
"Evaluation Guide for Interracial Beast-Eared Girls"
Shi Yu:???
The names of the first two books are pretty normal, but what happened to the last one?
"cough."
Shi Yu looked solemnly and stretched out his hand, but his arm soon stiffened.
Just when he was about to open the third book and see what it was about, his brain suddenly felt a sharp pain, and a large number of memories came flooding back.
Icefield City.
Pet animal breeding base.
Intern pet breeder. The website will be closed soon. Download the Star App to provide you with the shabby inventors of great masters and shabby inventors.