978, boasting that Haikou is round
Jun An didn't know what kind of medicine Gu Qianxue was selling in the gourd. Seeing Chu Yan's face, although he didn't express contempt in his mouth, he looked down on him in his heart.
In Jun'an's view, even if Gu Qianxue knows medical skills, she can't be an all-rounder, right? If a teenage girl can win the sword casting competition, then Mingjian Villa has been working hard at sword casting for hundreds of years, wouldn't it be a play house
The convoy started again, and everyone, including Yulian and Yucui, headed towards the mine under the guidance of Junan.
The reason why Famous Sword Villa makes top-notch swords is not only because of its pursuit of technology, but also because the mountains around the villa are rich in iron ore. This iron ore is completely different from iron mines in other places. Hard, more pure.
Along the way, Jun An explained the process of sword casting to Gu Qianxue in detail.
Although it is said to be sword casting, it is not actually casting. A more appropriate word should be forging.
There is an essential difference between casting and forging. The former is to melt the material, then put it into a grinding tool, and cool it to form; the latter needs to be forged to knock out the impurities in the pig iron to change its performance, while the latter is not so much iron. Rather steel.
The mountain of Mingjian Villa produces a kind of ore called gold iron. After Jun An's description, Gu Qianxue guessed that this gold iron is actually iron sand ore.
The first step is to select gold and iron, and then melt and cast them into pieces of iron of different sizes. This piece of iron is called pig iron. Because it contains many impurities, its performance is extremely poor, and its softness and hardness vary.
If you want to change its performance, you have to go through the burning of the furnace and repeated forging.
The second step is forging. There are two types of forging, one is ordinary forging, and the other is folding forging.
Because pig iron contains impurities, it will crack when the temperature reaches a certain high temperature, so the furnace fire must be kept at a fixed temperature so that the pig iron will not crack, but also have soft characteristics. In ancient times without thermometers, controlling the temperature became The housekeeping skills of a blacksmith or swordsmith.
Another housekeeping skill of blacksmiths and swordsmiths is the ability to forge iron.
When a piece of iron smelting is hot, it is taken out, placed on an anvil and hammered repeatedly, and each side of the iron block must be hammered. The most important and difficult thing is that during the hammering process, the The strength is even and the adhesion is full. Make the iron block fully squeezed.
The backlog process is like wringing water out of a towel. Through this special extrusion, various impurities mixed in the pig iron are gradually discharged, making its performance change essentially, and finally the pig iron becomes a piece that can be forged a sword. steel.
This is the so-called "hardened steel".
After the "ordinary forging" is over, enter the second process "folding forging".
The burnt material is forged into a long strip, cut crosswise at the position to be folded with a special iron knife, and then hammered and folded. Then put the folded material in the fire and burn it to soften it, and then continue hammering to make the folded parts completely dense and stick together. This process is called "welding".
The third step is to make a sword shape. As the name suggests, it is to hammer and extend the bonded steel bars to reach the required length of the sword. Then make the shape of the sword.
This process is not too difficult but very skillful, because there is a uniform standard for the length and style of the sword. The hand-knocking shape is all about the strength of the hand and the feeling of the soul.
In the later stage, there are quenching, cold forging, shaping and other processes, and some people even carry out tempering.
After that, it is sharpened to make it sharpen.
From the famous sword villa to the mine, the carriage drove for two hours, and Jun An talked for two hours in detail, making Gu Qianxue dizzy. She is a medical student, how can she know forging? Now it's just forcing ducks to put on airs.
The mine is right in front of you, but the horse-drawn carriage is still some distance away.
Jun An asked, "I've said everything I need to say, is there anything else I didn't understand?"
Gu Qianxue took a deep breath, "No, Mr. Dongfang has worked hard, I want to be quiet." Immediately afterwards, she closed her eyes.
Jun An happened to speak dryly, and seeing that Gu Qianxue didn't want to hear it anymore, he shut his mouth and looked at Chu Yan eagerly.
Chu Yan lowered her head, ignoring Jun An in the slightest.
So, what is Gu Qianxue thinking
At this time, Gu Qianxue's inner clothes were almost drenched in cold sweat. She found herself extremely ridiculous. When she agreed to a bet with the old lady Dongfang last night, she secretly thought that pig iron used in this era was better than bronze wares. But now it seems that wrought iron has been used in this era!
Wrought iron is steel!
She suddenly remembered reading a book in modern times that mentioned that Chinese forging technology had reached its peak during the Sui and Tang Dynasties, and later improvements were only made in terms of materials and details. As far as craftsmanship is concerned, there is no room for improvement.
Then what should she do
13 has already been pretended, Haikou has boasted, the bet has been placed, do you really want to stay and be a maid for ten years
It is not shameful to be a maid, but it is shameful to lose a bet.
Gu Qianxue shook her head violently, stretched out her hand and rubbed her temples, the more anxious she was, the more calm she was at critical moments.
manganese! Now she bets everything on Manganese!
Manganese is a good thing, and the durability and hardness of manganese are better.
And manganese ore exists on many iron-rich mines at the same time, this is her only hope.
Gu Qianxue doesn't know how to forge iron, let alone estimate the temperature. Even if she can, she can't improve the craftsmanship any more. What can be improved now is the material.
The three people in the carriage did not speak, and went all the way to the mine.
How can the mine not be tired of talking about it, but Gu Qianxue broke out in a cold sweat again, but this time it was a surprise, because she discovered the manganese mine!
There are many ways to explore minerals, and the most traditional and lowest-level method is to directly look for ore signs, that is, to find outcrops of manganese ore layers.
Manganese ore outcrops produced in layers are the most important direct ore prospecting signs. Usually, layered secondary manganese oxide outcrops are found on the surface. The ores are mainly composed of manganese ore, pyrolusite, and metamanganate Secondary tissue structure, often mixed with a large amount of siliceous and muddy matter, the texture is sparse, the roof and floor boundaries of the ore seam are relatively clear, the arrangement of the ore still maintains intermittent bedding, and the horizon is stable. Based on these characteristics, it can be determined that this is Residual manganese ore outcrop.
Jun'an immediately summoned miners to mine. The manganese ore on the surface has many impurities and low purity. The deeper the surface, the higher the purity of the ore.
Fortunately, there is a miner who owns manganese ore, which was produced by iron ore excavation. According to common sense, non-gold and iron are directly backfilled into the abandoned mine hole, but because the shape of the manganese ore looks very much like a A goshawk, and the manganese ore is black, was left as a handicraft by the miners.
And thanks to Gu Qianxue's discovery, the miners were immediately warned not to hide the manganese ore privately. If the manganese ore is inhaled for a long time, it will be toxic. This is why Mingjian Villa ordered the miners to backfill the abandoned mine.
979, Where there is martial arts, there is arrogance