For wrought iron, Chen Feng is really blind, but Chen Feng knows that it will inevitably go through a process of iron melting.

Even if the conditions here are very simple, and the fire that is born does not make the iron liquid, it is necessary to soften the iron as much as possible to make it easier to forge.

In fact, the primitive iron-making method, the iron smelted is not the usual slippery appearance at all, but is pitted like a piece of honeycomb coal.

However, Chen Feng has never cared about appearance, as long as he can use it.

Chen Feng made another wrought iron furnace and put the pitted iron into the wrought iron furnace for forging.

This wrought iron furnace is actually the same as an iron-making furnace, except that the things put in it are different.

Chen Feng asked Cai Jianxing to fan desperately, but the iron inside was relatively red at best, and it couldn't be soft at all!

Is it so strong? Chen Feng was a little surprised.

However, Chen Feng also knew that the temperature in the furnace was not high enough, which was the culprit that the iron could not melt.

The fan method has been proven to be a failure, and if you want to increase the furnace temperature, you have to find another way!

There are currently two paths.

One is to change the fuel, and the fuel that is fully burned, the temperature will definitely be higher. Charcoal is undoubtedly a better choice than those branches with sufficient water content, which is resistant to burning and high in calories.

The second is to build bellows. As we all know, one of the conditions for combustion is to have oxygen, and if the oxygen is more abundant, then the combustion will be more intense.

Of course, Chen Feng certainly couldn't build that kind of mechanical blower, and there was no electricity here. It's going to make something like a bellows.

Chen Feng said that only children make choices, and I want them all. If these two conditions are met for you, and you still can't melt the iron, it means that you have nothing to do with the rain and iron, and you can take the initiative to give up.

Charcoal, Chen Feng is really good at getting it.

In recent years, there are still many fellow villagers who burn charcoal at home.

Charcoal is a dark brown or black porous solid fuel left over from incomplete combustion of wood or wood-based raw materials or pyrolysis in the absence of air.

In fact, the branches with relatively high water content that Chen Feng burned on the iron-making furnace turned into charcoal after not burning fully for a period of time.

Cai Jianyi is a younger brother without a big move, and he can't cut down these big trees at all.

So Chen Feng temporarily transferred a few orangutans to work, saying that the current manpower is really tight, after all, he is a tiger with eight mountains, and the usual manpower is really not enough.

The divine power of the orangutan combined with the stone axe is really a match made in heaven, and a few clicks are a pine tree!

Chen Feng instructed them to cut the bark and cut it into well-proportioned pieces of wood.

The way to make charcoal in the countryside is the kiln firing method, and yes, Chen Feng is going to build a kiln again.

Chen Feng was about to vomit, and the kiln he had built in the past few days seemed to be about to build all the kilns of his life.

And there are so many kilns, but none of them can be shared, so we can only keep building new kilns.

In particular, the kiln used to burn charcoal must be larger.

The wood is so long, if you don't build a bigger kiln, you really can't stuff it in!

To put it simply, the kiln used to burn charcoal is an enlarged version of the kiln built before, and some small improvements have to be made at the same time.

The orangutans were like industrious sand monks, carrying baskets of yellow clay to Chen Feng one load after another.

Then Cai Jianxing was like a plasterer, piling up the clay layer by layer.

At this moment, Cai Healthcare's original black body has disappeared, and it has been replaced by a yellow, just like a mud puddle.

The structure of this kiln is similar to that of an iron-making furnace, except that the area is much larger. Then Chen Feng made a little bit of a small article on the vent.

Because the essence of charcoal is produced through insufficient combustion, it is best not to make the vent too large, otherwise a large amount of oxygen will be poured in, which is not conducive to its combustion.

In short, this kiln is an enlarged version of the iron-making furnace, and then a small change was made to the vent to make the opening smaller.

Then it has to be exposed to the sun for three to five days, and after it is barely dry, it is finally necessary to add a fire to this charcoal kiln.

The difficulty is not high, but it takes time to pile up, and there is no possibility of saving time at all.

Chen Feng secretly sighed: The paper is shallow, and I never know that I have to do it!

If you write a sentence lightly in a chemistry book, you have to spend a lot of effort to practice!

Then there is the bellows problem, which Chen Feng thinks is still very easy to do, and there are wooden bellows behind many earthen stoves in rural areas.

Taking advantage of the days when the charcoal kiln was dried and air-dried, Chen Feng prepared for the production of bellows.

This is called taking care of the whole situation and making good use of every precious time.

The bellows are at Chen Feng's house. When cooking in an earthen stove, it is a bellows.

Although this thing looks very earthy, it has a sense of age, but it is really quite practical, pull up the lever when the fire is burning, and then insert it hard, just keep thrusting, and the fire will burn very vigorously in minutes.

But Chen Feng still has some problems, because he doesn't know the internal structure of the bellows.

Usually when cooking on the fire, who cares about the structure of the bellows, and the continuous thrusting is over!

Therefore, Chen Feng had to carefully recall the details and deduce the internal structure through the external structure of the bellows.

In Chen Feng's impression, the bellows has an air outlet, so that the air pulled in will be directly blasted into the furnace through the air outlet.

Therefore, it is now known that the basic structure of the bellows includes: tie rod, box, and air outlet.

But Chen Feng also knew that a simple pull rod would never have the ability to push so much air.

Therefore, inside the bellows, there must be some mechanism that can push the air out in one go.

However, Chen Feng didn't know what this mechanism was.

Thinking is the first way to solve the problem, what are the details that can make the air expel vigorously?

Chen Feng drilled the tip of the horn all morning, but still found nothing.

Then Chen Feng gave up this idea for a short time, according to his past experience, he was always thinking about one thing or a problem in his heart, but it was not easy to remember.

In this case, it is better to think about something else in a different mind, maybe at a certain moment suddenly a flash of inspiration and remember.

During this time, the two iron-making furnaces were still smelting iron, and one iron lump after another was produced from the hands of the little monkeys.

Chen Feng felt very cool, this feeling is the same as saving money in a piggy bank, although there is not much money, but this kind of pleasure of accumulating a lot is really great.

After another three days, Chen Feng still couldn't think of the mystery of the internal mechanism of the bellows.

However, the charcoal kiln is almost dry, and it can be used when you put it on fire.

In the afternoon, Chen Feng asked Da Health to throw hay into the charcoal kiln, and then set a fire, the hay is originally flammable, even if the air is not sufficient, the fire is still very strong.

After a fire, the charcoal kiln was finally completed and became hard.

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