[The guaranteed three updates have been completed, and next is the additional update... Another book friend 234194 voted a thousand votes, and there should be an additional update. However, there is a default rule that I forgot to mention. This week's votes will be accumulated until next Monday when the update will be released. For the sake of convenience, we hope for your understanding.]
The prologue is to wait for the furnace to slowly heat up and heat the iron billet to a certain temperature before starting the work.
To be precise...it's okay for now.
Xiao Taohong walked around the house several times, panting, and finally moved some rough and bold chairs, and arranged for everyone to sit on them one by one. Then she opened the window to ventilate the air, and went to look for teapots and tea leaves, but only found the size of a bucket. A pot, a set of cups as big as a sea bowl...it's actually a big bowl of tea.
The teacup was too big, but I could still bear it. The teapot... filled more than one-third of the water, and Xiao Taohong couldn't lift it. After trying a few times, Xiao Taohong finally got angry, went out of the house, and called Lu Zhenyuan and the others. The disciples and disciples cursed and asked them to boil water and make tea to entertain the guests.
Everyone looked at it with smiles, but they didn’t feel that the time was difficult.
Lin Tuo took advantage of this time to take a closer look at the equipment Lu Zhenyuan chose. Hammers, tongs... they were all common items.
The soft stone anvil can eliminate the rebound of iron tools and is more strenuous. It is a good thing, but I also have it here, and the conditions are the same.
Then there are...the two quenching cauldrons next to the anvil. One pot is glowing with white oil, and the other is smelling of obscenity. Xiao Taohong opened the window for ventilation, probably because of this.
One pot is animal fat, a low-temperature quenching liquid that is better than ordinary oil; the other pot is animal urine, an original high-temperature quenching liquid that is better than pure water. When the two are paired together, Lin Tuo doesn't understand why the old man plans to use both. Liquid quenching method.
It can eliminate the shortcomings of cracking and distortion caused by high-temperature quenching liquid at low temperatures, and can also increase the flexibility of the weapon. Moreover, this combination is very reasonable. At first glance, the old man did not do it hastily, but he is very experienced.
The most difficult part is to change the iron billet from high-temperature quenching liquid to low-temperature quenching liquid at the right time and temperature. In the era without accurate measurement tools, you can only rely on experience. The difference in minutes may lead to changes in properties. Big difference.
Since the old man dares to use this trick, he must be confident!
Lin Tuo looked vaguely excited. If there was really no suspense about the gambling game, it would be meaningless...
While thinking about it, Tong Xi had already followed Old Man Lu's instructions, took out the iron billet from the furnace, and began to forge it with hammer after hammer. The heat was overwhelming and sparks flew everywhere.
After every beating, the old man would point out where to hit more times, where to hit lightly, and where to hit hard.
Tong Xi's skills seemed to be really good. She quickly finished one round of forging, and the old man rubbed his beard and nodded with satisfaction, and ordered him to reset the iron billet in the furnace and continue heating.
On Lin Tuo's side, there was no movement. Lin Tuo sat on the broad chair brought by Xiao Taohong, sipping tea. The presence of the old god made Xiao Taohong and Gu Xiaoyi very anxious, filling Lin Tuo's questions one by one. Shui, to inquire about the situation, one stood up and sat down, scratching his head and ears.
On the other side, the old man saw everything with his eyes, and he was even more contemptuous of Lin Tuo in his heart, until...until Tong Xi finished the second round of forging, and Lin Tuo finally moved.
At this time, the clinker in the furnace was quite hot, but... the raw material should be processed first, because according to the old man's estimate, the raw material would melt in a while.
The two furnaces in my home are not ordinary items. At the highest temperature in the furnace, there is no problem at all in turning iron into water.
However, Lin Tuo ordered Gu Xiaoyi to take out the wrought iron...
This piece of iron is extremely soft in nature, which means it has a very high iron content. It is loose and soft when struck, and it is easy to shape. Therefore, there is no need to pay attention to forging. Just hit it with a hammer, and it hit Lin Tuo. Required shape, slender and flat.
The old man looked at it and shook his head. In this iron-forged sword-making process, there is no way in which the uniform forging of materials is abandoned for the sake of shape. Although this piece of iron material can be almost careless... he shook his head. The next second, his head suddenly froze. Eyes narrowed to a thin line!
The wrought iron material was forged and stood sideways in the furnace just like before. At this time, as the old man expected, the pig iron material partially softened and began to melt.
Following Lin Tuo's instructions, Gu Xiaoyi picked up the pig iron with the tongs, as if dripping wax to paint a picture. He aimed the melted part of the pig iron at the upper side of the wrought iron, slid it left and right, and poured drop by drop onto the blade.
The temperature in the furnace is extremely high, and the length of the iron material and the tongs are limited after all. By doing this, Gu Xiaoyi is simply putting himself in front of the furnace to bake...
In one breath, large beads of sweat seeped out from the surface of his body; in another breath, beads of sweat as big as soybeans gathered into streams and rushed; after a while, sweat was already flowing into a river on his back, and his body There was not a drop of sweat in front of me, only the residual heat was steaming.
But beads of sweat came out and evaporated before they could gather together. The red fire illuminated Gu Xiaoyi's red skin, as hot as iron in a furnace. Even his hair was visible to the naked eye. Jiaoqu is deformed.
Gu Xiaoyi didn't realize it, his eyes widened, and white salt gradually formed in front of him, and he was sweating like rain behind him. He just held up the tongs and moved the pig iron material left and right, so that the melted "wax juice" could spread evenly and finely. Drop onto the wrought iron.
After a while, when the "wax juice" was finished dripping, Gu Xiaoyi inserted the partially broken pig iron material back into the hot spot, waiting for it to melt and soften again. He slowly straightened up and took a step forward. Suddenly, he felt dizzy. A trace was left on the stone slab under his feet. The circle is wet and dripping with sweat.
Lin Tuo hurriedly stepped forward to support him: "This is the first time, I'm afraid there will be at least twenty or thirty more times. Can you hold on? How about changing to a longer tong?"
Things like energy radiate outward and follow the cubic law. If the distance is doubled, the energy density will be eight times different. Increasing the distance can indeed greatly reduce the difficulty, but...
The longer the tongs are, the longer the force distance will be. It will be difficult to control the vibration of the front end of the iron material and make it difficult to cover the "wax juice" evenly.
The truth is very simple, so after only one operation, Gu Xiaoyi understood clearly, straightened up suddenly, and pushed Lin Tuo away: "You can hold on, Brother Tuo, don't worry."
I walked alone to the large tank of water quenching, wiped my face, and after thinking about it, I simply plunged into the tank, and then scooped up the water to relieve the heat.
What happened just now didn't last long, but it was like walking through mountains of swords and seas of fire.
Being a blacksmith is a job that involves dealing with iron and fire every day. Especially when you know how difficult that moment just now seemed to be short, you couldn't help but change your face.
Lu Zhenyuan's management apprentices saw Gu Xiaoyi's perseverance and never gave up, but Lu Zhenyuan saw much more than they did!
The wrought iron material is poured with pig iron juice, and a hard shell is sandwiched with a soft core, which is in line with the principle of combining hardness and softness. The direct fusion under high temperature is even more seamless. This forging method is unprecedented!
Although it was the first time, Lu Zhenyuan realized the brilliance of this method based on experience alone!
According to historical records in another world, this is indeed the case. This forging method is the ultimate form of steel-filling method, also known as Su Steel Method. It was only created by craftsmen in the middle of the Ming Dynasty and spread everywhere.
When it comes to the texture of the final product, it may not be better than the hundreds of refining methods that have been popular for thousands of years. It is really difficult to compare the craftsmanship of different eras together.
The Su steel method replaced the steel pouring method, and the steel pouring method replaced the solid steel method. In fact, it does not mean that the swords produced are really far superior. The biggest reason is actually...efficiency!
The hundred-refining method may not be able to produce a finished product after many years. The steel-filling method greatly shortens this time, and the Su-steel method further shortens it.
In three days, Su Gang's method was able to achieve eight points of strength, and the Hundred Refining Method was able to achieve two points, which is good. This is what Lin Tuo relies on to win but not lose...
