Looking back, he hadn't finished the blower yet, and he was also drunk. www.biquge.info I thought this thing was very simple, and I had seen the bellows back then, but it wasn't really like that.

After so many days, I finally came up with a spiral blade that could be rotated, and I planned to use my hand to shake it to provide wind power, which was equivalent to a pistol-type blower, but unfortunately the shaft was not metal, and this power was not enough, and it broke if the strength was a little greater.

But this idea is correct, it can be extended into a windmill in the future, but now it has to be done in a different way.

Time was pressing, so I immediately changed to make a leather blower, which blows air by pulling and pressing, and its structure is similar to that of a modern household exhaust pipe, which can be pulled out of 20 centimeters and 3 meters long.

He sewed it with animal skin, supported it with a circle made of bamboo in the middle, and hoisted the bladder fan, and the person only had to stand and pull the telescopic to complete the air blast.

Even Su Yang had a whim, if the operator was replaced with a windmill, it would actually be okay, and even manpower could be saved.

Theoretically, it is possible, but windmills are more troublesome than fans, and there is no river nearby, so forget it for the time being.

On the one hand, we will step up the construction and improvement of copper furnaces, on the other hand, we will manufacture fans, and the pottery that needs to be used will also be burned out as soon as possible.

At the same time, some tin has been smelted, which can be used for open-air smelting, and the fan is used as a fan.

Most of the baskets of natural copper ore have been prepared, because the density of copper is large, almost nine times that of water, and the copper that has been found weighs more than 1,000 catties.

Time always passes inadvertently, the first full moon comes after winter, and it is too late to go to the market in person, so I had to call the hat, anyway, the hat likes to deal with the outside as an elder of the bear family, and led the team to the market many times last year.

In addition, he wants to find a long-term person in charge of smelting, and it is impossible for him to spend here for a long time, and as for the candidate, he has to think about it.

With the arrival of the hat, he finally began to smelt copper ore on his side, and the benefits of using lime were also reflected, and the copper furnace was already stable and could be used.

"Look at it, a layer of charcoal, a layer of copper ore."

He spread the charcoal thicker to prevent the fire from being too strong in the middle, and this time there was no need to add solvents, it was already pure copper.

"Light the fire, uh, wait a minute, sacrifice for a while."

This is likely to be the first time copper ore was smelted in the primitive period, and it is of great significance, even if you don't believe it, you should sacrifice it, and it should be sacrificed to heaven and earth.

Preparing prey is standard, and a bonfire is indispensable, and after solemnly praying to the heavens by a few elders, the fire is finally lit.

He didn't know how long it would take, but it shouldn't be short, it was smoking, there was no smoke leakage around, and the stove was qualified.

Dozens of strong men take turns pulling the bladder fan, and they can't stop for a moment, because there is a firewood spout, and after opening it, you can see the fiery red situation inside, which should be successful.

He was not idle here, he was building a drainage, and at the same time preparing a place to smelt tin.

That is to say, when the copper juice flows out, he smelts the tin into it, mixes it directly, and then continues to drain it into the mold, and after cooling, it is the embryo, after quenching and beating, and finally the finished bronze.

The advantage of this is that secondary and tertiary smelting is avoided. But it can only be used on pure copper, which generally depends on the content of smelted matte.

He built a lot of molds, including spearheads and arrowheads, and estimated the volume of this batch of natural copper ore smelted, about one hundred and fifty bottles of mineral water, which was already very considerable, and consumed the character of the entire Xiyi people. With the addition of tin ore, the volume can be expanded somewhat.

Mold drainage adopts the method from high to low, the so-called water flows to a low place, blocking is not as good as sparse, he is very delicately designed, but at the same time does not allow any mistakes, especially on safety, strictly ordering no one to approach, this is no joke.

The first fumes are poisonous, and when the copper juice comes out, the temperature is frighteningly high, and it disappears when you touch your fingers.

After the explanation, he lay down nearby to rest, recently he looked highly nervous, overused his brain, didn't want to lie down like this and fell asleep, and when he was woken up, the copper water had begun to flow out.

"Good, good."

As expected, the copper ore was really melted, and looking at the sky, it was only a few hours, much faster than expected, but the speed of dissolution was not fast.

Copper water dripped into the prepared semi-circular clay pot, which was not very deep, and there was a gap near the upper edge, which was used to drain the slag, and if there were, the slag would float up, and when it reached a certain height, it would naturally flow out.

The copper will settle downwards, so there is an opening on the bottom side to drain the copper out.

"Speed up the blast!" The crowd was infected by his emotions and worked harder.

As more and more copper water flowed out, the semi-circular trough was almost full, and only a faint amount of different materials floated on it, which was almost negligible, and it seemed that there was no difference between natural copper and pure copper.

In the next step, the tin is prepared and poured into the prepared clay pot in proportion, and the copper water is also introduced into it.

The proportion of tin is about 10 percent, not more than 20 percent, and it is all calculated in advance.

In the process, the copper water and tin water began to fuse, accompanied by smoke, black to yellow in the turn to green, I don't know if this smoke is poisonous, and this kind of front-line work is better to do less in the future.

In addition, he felt that such a direct fusion might be a bit inappropriate, and he should be smelted for a second time after it was ready, but he really couldn't wait.

No matter how much, quickly lead the copper water to another copper mine, and the juice mixed here is drained again, and begins to enter the mold prepared in advance, the volume of ten liters is equivalent to twenty bottles of mineral water, then make twenty axes first, each axe weighs more than eight catties, which is not counting the axe handle.

This bronze axe is about the same as the weight of two modern bricks, and the slab brick is the artifact of the modern dry frame, the primitive man has good body speed, strong arm strength, and twice the weight of the axe, just about the same.

Of course, such as the meteorite iron Pangu axe used by Pabuk, weighing more than ten catties, another matter, for good arm strength, in the future in a separate batch, at present, counting the axe handle close to ten catties of axes, it is more suitable for popularization, and it will not waste too much bronze.

Because the weight and volume can be inferred from the density of the bronze in advance, the molds he made are very standard, and they have been simulated with clay beforehand, so there is no problem.

Here he drained three axes, and handed over the rest of the work to Bibeau and Yezi, who may become famous in the future, such as Ou Yezi.

Then he went to make a second clay pot, and the ratio of copper to tin was about the same as before, in fact, the different proportions would cause the hardness of the bronze to be different, and if he wanted to make a copper mirror now, copper and tin could be half each.

Of course, these are all inferences, what is the real hardness, and after it is made, it will be tested to start making knives, and he personally prefers Gurkha knives, that is, Nepalese recurve knives. (To be continued.) )