Through Vo Dai Lang, He Immediately Took Medicine

Early the next morning, while Wu Da was still sleeping, he heard someone tossing in the yard.

When he washed and walked to the yard, he saw a large pile of saltpeter and sulfur.

"Wocao, how many tons of goods does this Nima have, so many lumps?" Wu Da couldn't help but marvel that this Song Dynasty's production capacity was quite abundant.

Upon closer inspection, it was found that these saltpeter and sulfur were not badly pure.

Feelings are so popular in this dynasty, why doesn't anyone apply it? Wu Da couldn't help but feel sad for these people's minds. Fireworks and fireworks are very good, but no one thinks about weapons, this Nima is a big killer.

Wu Da quickly received saltpeter sulfur into the system space, and there was a lot of charcoal at home, after all, barbecue is commonly used, Wu Da also collected a batch of charcoal, and then found a corner and tried it.

Last time, gunpowder was inadvertently configured, but this time you only need to try the purity again, and it can be put into use. I saw that he mixed the materials according to the normal proportions, and a ball of primitive gunpowder was completed.

A long lead was scattered along the powder pile, and Wu Da ignited the fire.

I saw that the burning soon ignited the powder pile, and with a bang, a cloud of light flashed away. Looking at the ground is already a small pile of ash, it can be said that the configuration is quite smooth.

Since gunpowder is no longer a problem, it's time to make a few cannons of it. In fact, there are already artillery in this era, as well as explosive packs, but the ratio is not correct and the power is limited. Therefore, the military rarely uses it, or it is better to use a big knife and a long gun.

But Wuda understands the horror of this thing, limited to insufficient technology, not mature enough metallurgical technology, can not make pistols, but large-scale lethal weapons are still very easy.

When he was heating before, Wu Da knew that he could now make controlled goods, and iron could already be melted into water in this dynasty, but the conventional creation of sword weapons is still tempered, after all, molten iron will not balance carbon elements, the strength is too low, and there is no way to be hard with the weapons that are beaten. However, the strength of this weapon is too low, and it may blow up when fighting, causing self-damage.

Later generations of equipment for decarburization in the steelmaking process include converters and RH furnaces, because these two furnaces have oxygen guns, oxygen gun blowing oxygen can oxidize most of the elements such as carbon, manganese, silicon, phosphorus in the molten steel (the content of the elements in the molten steel is reduced after oxidation), and at the same time release heat (because it is an oxidation reaction), the purity of the oxygen used is more than 99%. Therefore, to reduce carbon in smelting steel, you need to put down an oxygen gun and blow oxygen to blow carbon.

Although it is the most basic redox reaction, this dynasty has no high-purity oxygen at all, and there is no way to operate in a vacuum environment, so Wuda has to do it with the attitude of trying it out. Without oxygen, you can only blow air for a while, as close to your own requirements as possible, so that the refined steel barrel can reach the best possible state.

Pure iron is very soft, harder than silver, but with a little trace carbon, that is, steel, the toughness and strength are greatly improved. Carbon is mainly solution strengthened, and iron tricarbon compounds are formed to improve the strength and hardness of steel. The higher the carbon content, the higher the hardness.

However, if carbon cannot be solved and chemically present in steel (such as ductile iron), the conclusion that the hardness of the high carbon content increases is not true. If the amount is too large, the plasticity will be reduced, and it is easy to break, and when the time comes, it will blow up the other party's happiness, and our team will be in trouble.

Wuda couldn't control the amount of carbon, but he knew the principle, so he bought a burner in a blacksmith shop and researched it himself. In the past, molten iron is injected into the mold, and that is a success. But Wu Da aimed the bellows at the molten iron, kept blowing, and stopped when he estimated that the time was almost up. If it is unsuccessful, the experiment is repeated, and the time is to go back and forth.

Too short a time is definitely not good, too long is not good, this time control is a technical job.

Wu Da himself tossed at home for several days and made several tubes. And both record the time of oxygen (air). The emperor does not pay off, the results in the past few days are quite good, there are always one or two pipes that meet the requirements.

Just as Wu Da was sweating profusely, Li Kui rushed back.

"Brother, he sent a letter to Zhang Zhenniang."

Wu Da remembered it, and forgot about this woman. This person seems to have a low sense of existence. The main thing is that she has no interest in herself and cares about what she does.

"Then you send her over, I won't go."

"Brother, what are you doing, burning the house so hot?"

"Go and go, don't mix it blindly, just come to me to help after sending the letter."

"Okay! Go too. After that, a slip of smoke and dust disappeared, and Li Kui left.

"Zhennima is worthy of being the black whirlwind Li Kui, could it be that the black whirlwind is saying that he comes and goes like the wind and has a black face, so he is called a black whirlwind?" Wu Da shook his head, dismissing these messy thoughts.

Wu Da had to estimate the time and continue refining. It is a bit laborious to directly take iron ore refining, iron products are still popular in this era, and Wuda had to fuse some worn-out weapons and agricultural tools to create cannon barrels. In this way, a whole month has passed. Everyone knew what new tricks Wu Da was studying, so they didn't rush him.

Li Kui gave Wu Da a hand, and the two made a mess every day. Their faces darkened when the stove was roasted by molten iron. The current Wuda is half a pound and eight taels with Li Kui. Live two black charcoal heads. Wu Daxin said that his forehead was sticking to the moon, which was Bao Zheng. I saw Li Kui smile slightly, revealing his white teeth.

In this month, Wu Da refined hundreds of barrels, but less than a hundred qualified ones. Seeing that he had spent a lot of time, Wu Da had to stop.

A hundred pieces, there are already a lot, but Wuda knows the defects he created, this thing can not be used all the time, the fatigue is much worse than that of later generations, that is, it is easy to blow up the chamber after using it too many times, and the barrels of those defective products have also been put away by him, and they can also be used in emergencies.

That pile of waste has been melted into molten iron and cast into iron balls, which are convenient for fortifications to use. As for the shells, he didn't think about how to do it, although it was a hollow iron ball filled with gunpowder, the principle was simple, but this hollow iron ball stumped him. Rome was not built in a day, and Wuda had to explore it later.

There were also martial arts in this era, so explosive packs are essential. Wu Da still did a lot, but it needed to be ignited and then thrown out. He has never touched real thermal weapons, so he is fooling around, and when he has the opportunity, he must move out these big killing weapons, and become a hit, Wu Dayi carelessly crushes the audience with thermal weapons.

After all, this is the county seat, and it is definitely not good to make too much movement. When there is no one in the mountains one day, take it out to try the power, and save the time when you really use it in the future.

The current war is still the era of cold weapons, and in the future, the siege of Dajin is nothing more than a ladder, throwing stones and other things. The city of the Great Song Dynasty is strong, as long as it does not open the door, it is still difficult to break in.