The principle of the rifling process is very simple, it is nothing more than the process of cutting the inside of the circular barrel back and forth with a knife and scraping out the rifling, and the difficulty lies in the stability of the rifling machine.

If the output of the steam engine is unstable, and a sudden slash is made during a certain pull, and the rifle is skewed, then the barrel will become a scrap.

Scrap guns, like them, are either used as low-quality smoothbore guns or thrown into converters in steel mills and recycled into liquid molten steel as scrap.

Fortunately, after this period of development, the accessories of the steam engine are relatively complete, including separate condensers, centrifugal governors, etc., and the stability of the steam engine has been raised to a higher level, and it has the basic needs of pulling the wire.

All this stems from the various scientific and technological memories in his mind, as long as the materials are qualified, there are resources and manpower, he can develop the industrial technology of the territory by leaps and bounds.

There are many places in the territory that need steam engines, but there are not many factories that actually have steam engines.

The mine has a steam engine, a glass factory, a steel mill, a steel mill and a blacksmith shop, and there are multiple steam engines, which are basically a generation of steam engines and are easy to make.

This generation of steam engines uses the vacuum generated when steam condenses to do work, and the efficiency is limited, but the advantage is that the pressure is lower and it is safer.

Alan took time to go to the blacksmith shop in the morning, and used the ability to teach at the full level to explain for fifteen minutes, from shallow to deep, from the outside to the inside, to explain the principle of pulling the rifle.

Experienced craftsmen are not stunned young people a few months ago, they have a strong ability to accept industrial knowledge, and after fifteen minutes there are no more doubts, and then they just need to follow the steps and strictly follow the drawings.

Dangdang, the machine tool manufacturing team of the blacksmith shop began to warm up and fell into the hot machine tool production.

Since building machine tools is a very time-consuming task, Alan didn't keep an eye on them and turned to the bullet making team at the blacksmith's shop.

The bullet workshop was huge, with rows of molds containing molten lead solution.

When the lead solution drops to a certain temperature and condenses into a solid state, the characteristics of easy processing of lead metal are used, and then sent to the furnace to heat the surface until it is red, and then the two hemispheres are violently pressed together with a powerful machine tool to synthesize the lead bullet rough embryo, and the round lead bullet made by this method has a circle of obvious color "equatorial line".

The cat-eared orcs who made the bullets were supervising the slave orcs to come back and walk around, and when they turned around, they suddenly found a person in formal clothes standing at the door of the workshop, and his heart sank.

Making bullets is a confidential matter in the blacksmith shop, the door is heavily guarded, and normal people need to go through layers of guards to enter the door, and there is only one person who can appear at the door quietly, and that is Allen!

"Lord Allen, why are you here, is there a problem with which batch of bullets?" Daisy carefully retracted the cat's tail behind him, a small gesture when he was afraid of someone.

There were many slave members in the blacksmith shop, and they were often divided into groups, and every day someone recorded the number of workers affected in a certain batch of products.

"There was no problem, Abel started to make machine tools for drawing rifles, so the bullets also had to be updated." Alan gave him a reassuring look.

When Daisy heard about the change, he wondered, "Aren't all bullets round, why do they need to be updated?" ”

"When you understand rifling technology, fluid mechanics, you will know why."

After Allen finished speaking, he saw Daisy's stupid eyes again, and added: "Study physics seriously, this subject is very important to you." ”

When it comes to physics, Dai pretends to be enlightened, indicating that he understands.

Reasoning physics books are like books from heaven, and there is a teacher teaching him in class, but he understands a little, but he forgets it after class.

Not everyone has the opportunity to listen to Allen's classes, and Allen's full-level teaching is mainly for teenagers between the ages of 10 and 20.

An orc in his twenties and thirties, like Daisy, can only enjoy the lessons of other teachers.

Eren mainly teaches teenagers, and the orcs in the town all express their understanding, after all, teenagers are receptive, and the worldview of adult orcs has been stereotyped, even if there is a change in a short period of time, the efficiency is not high enough.

"Do I need to go back to my physics textbook?" Daisy asked hesitantly.

"No, you have a small group of experienced people to come over and set up a Mini bullet production team, I will personally teach you the principle and production process of Minnie bullet, but I will only give a verbal lecture, and you need to explore it yourself afterwards."

Alan turned and walked to the wall of the bullet shop, where there was a huge blackboard.

"Understood, I'm going to find someone to set up a new group right away." Daisy couldn't help but want to jump up and celebrate when she heard that Eren was going to teach people in person.

Daisy still remembers the first time she listened to Allen talk about how to make round buckshot in class, and she could explain things clearly in one sentence, not in two sentences.

And Daisy's mind will also have the corresponding production picture, the picture is vivid, as if he made the projectile himself.

After going to bed the next day, it is still vivid and unforgettable.

He couldn't help but whistle and shouted, "Lion cubs, do you want to make new bullets, Lord Allen is here, follow me what you want to do." ”

The lions who were making bullets were stunned for two seconds, and then they put down their work and shouted, "I, I, I!" ”

"Daisy-sama, I've heard dinner with you, you must choose me!"

"It's amazing that you've had dinner with Daisy, Lord Allen wants a familiar hand, and the newcomer is shameless!" Some of the old men who had been working for months despised the new slaves.

The lion slaves are anxious, and there are not many opportunities to listen to Alan's lectures, so they will never be allowed to give them to them.

Alan was still indoors, Daisy's whole body trembled, she had planned to choose some random people, but now she couldn't do it casually.

He took a closer look first, and instead of choosing those old acquaintances who were patting cats, he chose those orcs who usually worked hard, and they had worked for several months, and there were no newcomers.

Daisy carefully put the people together, and Alan didn't have a different color, so he picked up the chalk and began to speak.

"What is a smoothbore, what is a rifle, and who is more advanced, I will briefly explain it here......"

A minute passed, and Alan sorted out the two gun systems, and the orcs in the audience finally understood why the guns were engraved into the load.

Allen added: "The barrel has a rifle, the rate efficiency is not enough, and the bullets we make must also be changed to fit the rifling and improve the accuracy......"

"Here is the mention of the conical bullet, when the conical warhead flies, the air flow path is like this, and everyone here has studied physics, I don't want you to learn, at least know the air resistance, the conical bullet can reduce the air resistance......

Alan drew the conical bullet and the path of air flow.

It took three minutes for the orcs to have an idea of why a conical bullet was awesome in their heads.

Daisy, the cat-eared orc, was already wide-eyed, taking notes with both hands, and secretly sighed that this design was amazing.

On the stage, Alan spoke lightly, and the orcs in the audience were hungry to attract new knowledge and open a new door to bullet technology.

Allen explained the next highlight, "In addition to the conical warhead, the most important thing is to fit the rifling inside the barrel, which brings us to another concept - the expansion bullet. ”