The blacksmiths of the blacksmith shop work together to build four human-powered rail cars, each of which can transport up to 40 ladles, and it takes only one or two minutes to travel back and forth, which is convenient and fast.

The slave scout was very excited to grab another lion slave, he had a scar on his face, he was also a secret spy from Saltpetertown, and the two would exchange information about the day during their daily meals.

Now the slave scouts can't help but share the joy with their companions, and the advent of the rickshaw is a testament to the advanced invention technology of this new town.

In addition, the white fog in the ironworks was steaming, sparks were splashing, there were often horrific scenes of hot iron flowing down the canals, and the slaves often used certain things to collect hot iron, and it was hard to imagine how they could work seriously without shaking their faith in nature.

Anyway, the intelligence spy Lion Man had long wanted to pass on the information about the ironworks, but the work of the ironworks was too strict.

Although the secrets of the ironworks are not as high as those of the gunpowder factory, the orcs working here have the same rules as the nomadic ones, and they cannot run out of their own area, and they cannot sleep outside the slave sheds of the ironworks when they sleep.

Last night, he had tried to pee at night, checked the surrounding security facilities, and found that many soldiers in the town were not patrolling, so the night was the time for messenger pigeons to send messages.

Taking advantage of everyone's attention to look at the steel mill, he whispered to his companions: "This human-powered rail car is very powerful, it doesn't need animals, as long as it can be pushed by manpower, this is a very critical technology, can you draw the structural diagram of the human-powered rail car?" ”

"Yes, but I need to look at it many times, otherwise I will be punished for drawing some of the details wrong." The lionman spy, who was good at drawing, said in a low voice.

The surrounding slaves were immersed in the miracle of the miracle, and they were carried away by the fanaticism, not paying attention to the whispered communication between the two thieves.

……

Rumble.

The molten iron is poured into a large converter, and scrap steel bought from all over the world is also poured into the converter, and a thin pipe is poked into the furnace, which is an oxygen gun.

The oxygen comes from the Orc Lab in Tomorrowtown, and Alan uses his full-level teaching ability to teach a team of 200 slaves to be experimenters who memorize steps.

First of all, using the endothermic properties of saltpeter, a large amount of high-purity oxygen will be produced by using the air freezing separation method.

This oxygen cannot be guaranteed to be 100% pure, and it is a very powerful technology to have under existing conditions.

Afterwards, a steam engine and a rubber piston were used to produce extraction and gas delivery, and a large amount of oxygen was fed into a sealed steel container made by a blacksmith.

The air-chilled separation method is expensive upfront, but it becomes easy when it is successful, with a high yield and countless air sources, so it can be used casually.

After a while, when the converter rotates, the refined molten steel flows out of the specific channel mouth and is injected into the pending container, and after a period of time, the steel flakes will be formed.

"Lord Allen, I saw the converter design of the steel mill a month ago, and to be honest, I am still confused, I don't understand the oxygen gun very well, and what alkaline air blows on the side, can you tell me the principle?"

Abel scratched his hair, after seeing the successful operation of the converter, he did not look at the quality of the steel flakes, he could not wait to understand the deepest secret of the converter steelmaking.

Alan hummed, remembering that he had recently written a book on junior high school chemistry, and said, "This requires you to go to school to study chemistry." ”

"Chemistry?" Abel didn't understand the word, so he had to memorize it.

The god of casting is above, isn't steelmaking in your natural realm, do I want to believe in the god of chemistry? Abel muttered in his heart.

"That's right, but chemistry classes haven't started yet, chemistry classes will start in a day or two, and the chemistry lab in the school will be preliminarily installed." Alan nodded.

Chemical experiments require all kinds of transparent glass test tubes and other materials, as well as rubber tubes and other materials, which require the support of glass factories and small rubber workshops.

The Windsor cat next to her moved her ears slightly, eavesdropping on their conversation.

"Chemistry books, didn't you tell me yesterday to take them to the printing house to print hundreds of books?" Windsor's mind flickered.

Steam engines need physics, steelmaking needs chemistry?

Windsor secretly remembered the basic disciplines required by these industrial machines, and only after learning them thoroughly could they understand Allen's management.

Alan didn't know the complicated minds of the people around him, watched the converter run for a while, and after confirming the normal operation of the steel mill, he began to arrange the next strategic task - the steel cannon!

Cannons are the gods of war!

"Well, now that the converter is successful, it's time to make the next big weapon." Alan muttered.

Alan didn't hide his voice, and deliberately let the orcs around him hear this.

With the converter steelmaking method, and due to the three deprocessing of molten iron, the quality of the steel produced is different from the past, and the quality of the cast steel cannon is also rising in a straight line, and it is time to manufacture the artillery.

When the orcs heard Allen's words, they immediately left chemistry behind, and the thoughts that came to their minds were words such as muskets, flintlock pistols, and smoothbore front loading guns.

"What's the next big weapon, or a gun?"

"Since it's large, it should be a large musket."

Powerful weapons can give villages and towns a great sense of security, with them, they are no longer afraid of the infestation of random beast tides, and at the same time, they are not afraid of the Lionheart Kingdom settling accounts after the autumn.

"You guessed it, it's an enlarged version of the musket, but it's a little different from what you think." Alan shook his head and led the group into the director's office of the steel mill.

There are not many orcs who can participate in the training, because this is a new technology and new secret, and most of the orcs who come to listen are blacksmiths from blacksmiths, and a few are orcs such as Windsor and the director of the steel mill.

When the orcs who were supposed to come had gathered in the office, Alan stretched out his hand, and Windsor understood, and took out a strange design drawing from the small bag that he had drawn the other day.

The white blueprint was placed on the countertop, slowly spread out, and the orcs saw a large steel pipe with two wooden wheel-like hand-pushed structures underneath.

Its butt is round and very massive, but the anterior middle part of the "barrel" is tapered.

Even so, its "mouth" was still enormous, at least much larger than the twenty-millimeter caliber of a flintlock pistol.