As soon as these fifteen people left, the only remaining prime-aged people in the tribe were Wang Yang, Wang Yingying and the patrol, and the others were either children under the age of six or pregnant women with big bellies, and there was not much labor left.

For pregnant women, it is naturally a special preferential treatment, and there is no need to do anything, which is called paid leave......

Population is the key to development now, and nothing is more important than population.

Therefore, pregnant women eat and drink every day, drink and eat, sleep steadily, and only need to do a good job of protecting the fetus.

Many pregnant women see that they have nothing to do every day, and they are a little related, how can they do it if they don't do things? I used to do the same thing when I was pregnant.

Those aliens who have just joined the tribe are even more uneasy, feeling like they want you to go home and wait for the phone call after the interview.

They are trying to find something to do, and they must not stop.

Wang Yang is helpless, the human beings in this era are too simple and kind, and their energy is too strong, if you want to let them rest, it is really difficult for them.

Wang Yang asked them to help them make templates for themselves, and then make more straw sandals and straw hats and other things for backup, these are light jobs and will not have any burden.

And Wang Yangma began to really test the usability of these bronze objects.

He found a piece of wood, and it was a small tree, no more than three meters long and thirty centimeters thick, and the branches had not yet been removed.

This is a tree that Wang Yang specially asked someone to transport from the forest a few days ago, and the purpose is to test.

Pliers don't need to be tested, as long as they are metal, they can be used.

What Wang Yang wants to test are all large-scale processing tools. For example, saws, planers, axes, etc.

He took an axe and cut it down on a branch. After a few clicks, the branch was cut down. Very crisp.

The axe, on the other hand, was intact, not even a single notch, and he smiled, it seemed that the axe made of copper was still quite good.

After cutting off all these branches, Wang Yang brought a hammer and a carving knife.

The hammer is a small hammer that everyone usually sees, and the carving knife is the kind of carving knife that is five centimeters wide.

When he had brought it, he placed the knife on the protrusion of the tree and struck it flat with a hammer.

No surprises. It was easy to finish, but the blade of the carving knife was slightly bent.

"It's not good to be a carving knife." Wang Yang put the knife aside and continued to work.

The surface of the tree is quite flat, and there is a layer of bark of about two centimeters on the surface, and the bark fiber of this tree is not good, so it cannot be torn off directly, nor can it be lifted piece by piece.

Wang Yang: They rarely cut down this type of tree because it is difficult to deal with.

He brought a planer. This planer is a one-way planer knife that can only be pushed forward, and if you want to process quickly, you can make a double-sided planer knife.

But then again. Wang Yang did this, not to use it, but to test it.

After all, he only knew the characteristics of Dao copper. I've never tried to use it.

He grabbed the planer. Let Wang Yingying and a few people help him stabilize the wood, and then snort. Push forward.

The bark is flipped out along the planer, then through the planer, and re-covered on the wood as if it had never been planed.

He pushed to the end of the side, turned around, pushed this way, and with a bang, the bark flew up again, and then quickly returned to calm.

Soon, Wang Yang cut off most of the tree's bark, but every time he pushed it down, the speed would slow down a lot.

It's not that he doesn't have the stamina, but that the copper planer knife has some curly edges.

"Sure enough, the copper is still too soft." Wang Yang wiped his sweat, copper is not hard or soft in metal, but compared with the easier to use iron metals, it is inevitable that it is a little powerless.

Just like this planer knife, if it is made of iron, how can it be curled in such a short time, it is simply unimaginable.

Moreover, Wang Yang found that the copper was not very wear-resistant, and the cutting edge was not only rolled, but also a little worn off.

I heard that when modern technology processes all kinds of metalware, there are other ways to strengthen forging, Wang Yang does not know at present, and this aspect will be explored in the future.

Next, Wang Yang tested the saw again, and the performance of the saw was several points worse than that of the planer, and Wang Yang understood that the thinner the copper, the more obvious the disadvantage.

Although it is considered an artifact in this era, in Wang Yang's opinion, it is too much effort.

The conclusion has been made that small tools such as hammers can be made of copper, while thinner items cannot be made of copper.

"We'll have to find something else to replace it."

With a flicker of his eyes, he walked into the warehouse with a smile on his face.

After a while, he turned out two silver chests, yes, chests made of tin!

"I fused tin into copper and made it into bronze, and I thought that with the hardness of bronze exceeding copper by several times, and better wear resistance, it should be able to do the role of those tools."

Wang Yang happily took out the tin box, and then disassembled those tools that were not easy to use, and prepared to return to the furnace again.

Bronze, in fact, is a kind of alloy, called tin-copper alloy, what is an alloy? Two or more different metals, fused together, are alloys.

But then again, the name bronze is a general name, including tin-phosphor bronze, tin-zinc bronze, and many other bronzes, each with its own advantages and disadvantages.

Overall, bronze gives people the feeling of being hard! It's really hard, the kind that's so hard that it's brittle! It's like a diamond, it's a very hard thing, and it can be smashed with a hammer.

This can be seen from the bronze swords unearthed in ancient times, the bronze sword should not be too long, otherwise it will be easy to break.

The bronze sword should not be too thin, otherwise it will be easy to break.

So bronze is hard, but it's nowhere near as good as iron.

I've never heard of an iron sword not being too long or too thin.

Of course, there is no need to repeat more knowledge about bronze, and it is probably enough to know the way.

Wang Yang was still very apprehensive about refining bronze, so he divided the tin into small pieces, a small piece, and then put it in the same bowl as the copper, intending to take it in and burn it like this.

However, he touched his nose, but he still didn't make it directly, because he seemed to have no proportions......

Everyone knows that bronze is not simply put tin and copper into it to burn, if the proportion is wrong, it is not necessarily bronze.

When the proportion of tin is very high, what is refined is white copper, and white copper and bronze are not touched except for copper, and the relationship between half a cent is not touched.

You can imagine how important the proportion is.

The hardness of ordinary bronze is several times that of copper, which can be calculated through knowledge of chemistry and physics.

Wang Yang is also a person who has gone to college, can't he be counted? Can't he really count?

He really can't count...... Years of knowledge have long been returned to the teacher......

"Don't seek to climb to the sky in one step, let's take your time."

He began to use a multi-place netting method, mixing various proportions of copper and tin together, putting them in different bowls, noting down the proportions, and then making a list before putting them in the kiln and returning to the furnace.

The fire was whirring, and Wang Yang, who had lost a large number of manpower, had no choice but to pull out a few people from the patrol team and refine bronze with him.

In the blink of an eye, two hours passed, Wang Yang took out the bowl, and then the juice of each proportion was cast in various templates, and after a day, it could be compared very intuitively.

A day later, Wang Yang came to the template, and in the face of the golden flashing light, he almost blinded the titanium alloy dog's eyes!

The pure gold...... No, it's pure golden yellow! A golden utensil that looked exactly like gold was displayed in front of him.

"I ...... I'll go, I'll go to your uncle, I%¥#......" face a golden ...... Bronze, Wang Yang's view of the world almost collapsed.

He picked up a handful of golden ...... Bronze Sword, swallowed his saliva, and said with difficulty: "Which king and eight lambs lied to me that bronze is cyan?" ”

That's right, the true color of bronze is a golden yellow that is more golden than gold, but with the future rust and oxidation of the air, as well as the environmental conditions, the cyan color of copper once again smiled and appeared in its original form.

The yellow bronze has been turned into a blue-green bronze in people's eyes.

At this time, the bronze, put together with the brass, could not be seen at all by the eyes, but if you dropped some chemical potions, you could distinguish them.

Therefore, the TV series kills people, those pictures of the Xia, Shang, Zhou and Qin dynasties, the bronze wine bottles must be blue-black, for fear that you don't know that this is bronze.

In fact, Wang Yang still learned this knowledge, but as a sullen liberal arts student, it was too difficult for him to get things like chemistry.

After being stunned, Wang Yang turned his shock around and began to test the performance of these bronzes.

The proportion of these bronzes was divided into five parts by Wang Yang, 5%, 10%, 15%, etc., and the tin bronze, which occupied 25%, had become obviously gray.

It should not be bronze, but close to white copper, but not to the level of white copper.

He first tested this "bronze", the largest weight, and as expected, it was very hard, but it was more brittle than a girl's glass heart, and it would break when you touched it, and it couldn't hurt.

He then tested the other proportions of bronze and found that all of them were too brittle, except for the bronze with the lowest tin content, which was hard rather than tough, and had the quality of iron.

"It doesn't seem that the amount of tin is needed a lot." For Wang Yang, this is naturally very much desirable to see.

His tin was only two tin boxes, which were not much, and it took two months to get to the tin mine, and four months to make a round trip.

Three trips back and forth, okay, three hundred and sixty-five days a day, all in a hurry.

The proportion of tin is not much, so it can naturally be collected once, which is enough to use, which is quite important, otherwise Wang Yang can only find another tin ore.

At present, these tins can be processed into a lot of bronze, and he must save and save, and the good steel is used on the blade, and the other less important metal tools are all replaced by bronze.

Just as she was thinking, Xiaohong came back from the forest worriedly. (To be continued......)