The seventeenth day of survival in the Banna rainforest.
After hammering for a full day by the stove, the original iron ball had been completely stretched and developed into a long strip. To this end, Bifang smashed two stone hammers.
Choosing to make steel is a race against time. Starting from yesterday, Bi Fang worked late into the night every day, getting up to heat the furnace and melt the iron before dawn.
Sleeping less than six hours a day is probably a blessing to viewers around the world, because they no longer have to worry about the time difference during live broadcasts. As long as they turn on their mobile phones, they can almost see either hammers or hunting figures.
.
Rainforest survival day 18.
Maybe it can no longer be called survival. From the day Bi Fang decided to make iron, it has left the scope of survival and turned into life.
It was still dark, but like a blacksmith, Bi Fang got up skillfully, washed himself, and finally started the furnace.
He kept pouring charcoal into the fire, so Bi Fang had to make at least one pit of charcoal every day to make it enough.
The high temperature in the furnace blackened his whole body. Bifang, who was sweating like rain, clamped the red and dazzling iron bars and beat them continuously.
At noon, the long iron bar was sharply bent and folded again.
This was the first time he had folded and forged it. Bi Fang couldn't even remember it clearly. He only vaguely remembered a number. He felt that his arm was about to break.
Continue to put the iron bar into the furnace to heat.
After drinking some water to replenish water, Bi Fang walked aside and washed his face, revealing his wheat-colored complexion, and took a big breath.
"What does that sentence say? Laziness is the root of productivity development. Although it is a joke, I think it really makes sense."
During the break, Bi Fang would choose to chat to retain the audience in the live broadcast room.
The science popularization is very good, but quite a few people are willing to stay and listen to the lecture.
After all, sexy and popular online science is quite attractive.
The desire for knowledge is also desire.
"We use charcoal as fuel and smelt the iron ore into sponge-like solid blocks in the furnace. What we take out after the furnace is cold is actually called block iron smelting. This is what we did about 2,500 years ago."
"Lump iron has low carbon content, soft texture and many impurities. It is the wrought iron produced by early humans. Use lump iron as raw material, heat it in a carbon fire to absorb carbon, increase the carbon content, and then forge and remove it.
The magazine in turn infiltrates carbon, resulting in steel."
"This kind of steel is called block iron-making carburized steel. But the quality of this kind of steel is not good enough. During the refining process, it is very difficult to control how much carbon has penetrated, whether it is evenly distributed, and how much impurities have been removed. And
Production efficiency is extremely low.”
This kind of steel is of course unqualified, no matter what tool it is used as.
"In order to improve the quality of steel, craftsmen in the mid-Western Han Dynasty invented the 'hundred steel making'. This is what we are doing now. The block of steel is repeatedly heated, folded and forged to make the steel structure dense, the composition uniform, and the impurities reduced, thereby improving the quality of steel.
The quality of the steel.”
What Bi Fang is doing now is this step, which is to continuously forge the refined iron block.
At this time, the iron is both raw and ripe, which can also be said to be neither raw nor ripe.
Bi Fang calls it the duality of raw and cooked iron!
"Haha, just kidding." Bi Fang scratched his head.
"The demand for steelmaking is increasing, but the production efficiency of raw material block ironmaking is very low. It must be 'cooled' after smelting, so the development of steelmaking is restricted.
The most important thing is that it is too tiring. A craftsman has to forge a piece of iron hundreds of times at least a hundred times before it is formed, so it is called hundreds of times. However, people at that time could not keep up with nutrition. When weapons were needed for war, A craftsman may die from exhaustion."
"In order to break through this limitation, craftsmen invented a new pig iron steelmaking technology, fried steel. As I mentioned a few days ago, this is a hanging."
"Steel frying heats the pig iron to a liquid or semi-liquid state, stirs it in the furnace, and uses methods such as blasting or sprinkling concentrate powder to use oxygen in the air to oxidize silicon, manganese, and carbon to reduce the carbon content. Thus steel is obtained. Fried steel is named because it requires constant stirring during the smelting process, just like cooking."
China started frying steel more than 1,600 years earlier than the European steel frying technology started in Britain.
After chatting with the audience for a while, Bi Fang poured the remaining water on his head, went to the blast furnace, removed the furnace cover, and continued forging.
Refining hundreds of times, how can you do it without a hundred times?
After doing the math, Bi Fang had beaten it for nearly three days, and it was only fifty-five times. It was far from enough. This was still the result of the softer texture in the early stage. The later it got, the harder it was to forge.
There are only more than three days left, so we have to work harder.
"Grandma, no wonder the craftsmen are so exhausted. I'm almost exhausted."
The nineteenth day of Banna.
Today, Bi Fang worked hard and forged for more than thirteen hours and folded it twenty-one times, bringing the total number of times to seventy-six.
At this time, the iron was far less soft than it was at the beginning. It had become harder and more difficult to hammer, so Bifang had to find a better stone hammer. He also had to glue a layer of tree board on the surface with rubber to prevent it from breaking due to low toughness. .
this is a good news.
This shows that the quality of the iron in Bi Fang's hands has become higher and it has begun to develop towards steel.
It is worth mentioning that the water monitor lizard ran to the stove at night and was hit by a piece of red coal, causing a black scar.
From then on, it never dared to go near the blast furnace again.
Day 20 of survival in the Banna rainforest.
In a whole day's work, Bi Fang only folded the steel bar fifteen times, bringing the total number of times to ninety-one. Every time he beat it, his muscles would feel uncomfortable for a while.
At night, Bi Fang was lying on the bed. His right arm was so sore that he had to soak it all in cold water.
These days, millions of viewers accompany Bi Fang in the live broadcast room, watching the iron that was originally larger than a fist turn into an iron bar, bending and folding again and again.
The size is getting smaller and smaller. So far, the iron bar is already smaller than the original one. If it is hammered and polished, everyone believes that it is already a good dagger.
[How about forget it, it feels too difficult]
【Is it almost enough to have iron? 】
Valley
[This makes me hammer for a day, no, half a day, and I will die]
[Lao Fang is a real man. He counts until he does it. I feel like he is already strong now. 】
[I won’t watch the Broken Knife Competition without you]
Bi Fang smiled, very happily
"If the iron in my hand doesn't get harder and harder, I might really give up. It means there are a lot of other impurities in it, and the possibility of connecting it into steel is very low. However, it doesn't, so I have to do it. To the best.”
Iron is tempered and refined into steel!
Without countless blows and training, the processing performance and usability are the worst!
This is not only making steel, but also training yourself. Only when you achieve the ultimate goal and can no longer fold it, is the answer that Bi Fang will hand over.
The perfect answer in his heart.
Thinking of this, Bifang suddenly stood up from the bed, water drops flowing down his slightly swollen arms, and vines wrapped around his palms again. He stretched out his hand to hold an unknown stone hammer and came outside again.
I will leave here in six days tomorrow night. I must completely complete the forging before tonight so that I will have enough time to polish it tomorrow.
Open the furnace and make iron!
The twenty-first and last day of survival in the Banna rainforest.
It was still dark, and the audience hadn't slept either. They stayed up late with Bi Fang, watching the red iron bars fold again and again in the darkness, sparks bursting out, and the black iron sheets falling off.
In the early morning, with the final blow of the sledgehammer, the rocks shattered and fell to the ground again.
Bi Fang had a headache and hadn't slept all night, which made his fatigue level reach its peak at this moment. He had no doubt that if he was given a soft bed at this moment, he would be able to fall asleep.
"How many times has this happened?"
【101!101 times Fang Shen!】
【It’s been a hundred steel-making, it’s really a hundred steel-making】
【Have you started grinding?】
Bi Fang shook his head, continued to heat the iron bar, turned around and went into the house and took out another stone hammer.
He said that you have to hammer until you can’t hammer the unknown.
In the early morning, the sun slanted across the trees and shone on Bifang.
He hasn't applied anti-mosquito mud for several days. It's so hot here that even mosquitoes don't want to get close.
The water monitor lizard swung its tail and crawled out of the cave. The IQ of a cold-blooded animal was not enough for it to think about too many complicated issues, but it was still deeply shocked by not sleeping all night.
This creature is so terrifying.
Five full days.
Bifang's skin color has changed, turning into a healthy wheat color. Every hair on his body is glowing with golden light in the early morning sun, and sweat gurgls along the gaps in his muscles.
After days of work, the salt in Bifang's body quickly disappeared. If it weren't for the salt, animal blood alone wouldn't be enough to replenish it.
The sound of gold and iron colliding sounded, and sparks sputtered again.
One hundred and two times.
Continue to heat.
One hundred and three times.
Bifang had breakfast. In order to save time, he only ate large fish without spines or fish belly with spines, and gave the rest to the water monitor lizard.
Perhaps this wild water monitor lizard never thought that he could still eat cooked food in his life.
The giant hammer fell again, and a huge rebound was transmitted to his arm, and Bifang suddenly let go.
In the forest, the clear metal trembling sound lasted for a long time.
This time, the orange steel bars on the stone slab did not react at all.
Bi Fang suddenly fell to the ground, his eyes turned black in waves, and cold sweat poured out layer after layer.
It's not easy, it's really not easy.
Everything in front of me is not so real.
After spending more than five days hammering, hammering for more than twelve hours a day, and sleeping less than six hours, I finally hammered out a qualified steel bar!
【This is...steel?】
Looking at the red iron bars standing on the stone plate, no, they should be called steel bars now, everyone just felt a sense of magic.
【Am I really on earth?】
[So, Fang Shen really refined a piece of...steel in the wilderness?]
In the first venue, the audience saw Stutter and looked at each other, as if trying to verify what they saw.
But the extremely shocked expressions on everyone's faces told them that.