The next morning, the government workshop in Huanggang County.

The Shenshu people personally inspected the place where they were originally responsible for building weapons for the prefecture, emitting charcoal smell from smoke and chaos.

The person in charge of the workshop is named Zhou Tiedan, who is a 50-year-old craftsman and a craftsman for generations.

During Liu Xiyao's occupation of Huangzhou, he and the 100 craftsmen under his command were forced to serve the thieves. After the official army returned, they were worried for a while, but fortunately, Chen Shuren didn't care about these things later.

Today, the new magistrate came to inspect in person. Of course, Zhou Tiedan was very nervous and was very careful in reception. He saw it from afar and knelt down to greet him. He was also afraid that the magistrate would settle the weapons they had helped the thieves build in the year and a half.

Chen Shuren was humble and had the first time to see these people, but he walked up quickly and directly helped Zhou Tiedan up:

"Hey, there is no need to be polite. The court will suppress the thieves and drive away Jiannu. The first battle is strong and powerful. You are all people who have great benefits for the state. You will continue to do your best under your own authority in the future. The salary will be better. In addition to the court's quota, if you perform well, you will also have rewards for your own authority in private."

Zhou Tiedan didn't dare to believe it, so he took out a booklet with anxiety:

"The Lord of the Good Church's National Taiwan learned that in the past year and a half, Liu Zhe forced us to build so many military weapons. We all know that the imperial soldiers will always be liberated one day, so they dare not destroy the accounts if they keep them. Please forgive me."

Chen Shuren took it and said openly: "Even Liu Xiyao knows how to use you more. Is my official's knowledge not as good as Liu Xiyao? The murderer killed someone with a knife. The crime is the murderer rather than the knife. Don't mention this in the future."

A simple sentence, but the truth is easy to understand, which makes Zhou Tiedan and others feel quite heartwarming.

They quickly introduced the Shenshuren into the house and took a brief look at the blacksmith workshop in the prefecture. The various workbenches, hammers, and furnaces that create knives, guns, and arrows are in order.

There are several rooms next to it that are theoretically dedicated to repairing muskets, with simple fixtures and equipment for forging iron rods and boring holes.

The sign at the entrance of the yard is written seriously, which means "repair" rather than "new creation", which can also be regarded as respect for the court's consistent unspoken rules.

The Ming Dynasty initially allowed local prefectures to make firearms by themselves. After the Jingnan Dynasty, Zhu Di was afraid that other vassal kings would also build arms, so he banned local firearms. It was not until the Ming Dynasty that the Ming Dynasty relaxed the control of "allowing local governments to repair firearms issued by the court on their own."

At first, it was just a release of the important towns in Jiubian. In the late Wanli period, thieves and chaos broke out, and the mainland prefectures gradually relaxed. However, the word "repair" was always bitten to death.

After the local garrisons use up a lot, even if the new ones fill the gap, it will be repaired to the outside world. As long as the total number does not exceed the court's quota, it will not be violated.

Fortunately, it is now the end of the thirteenth year of Chongzhen, and the laws of the court must be becoming increasingly relaxed.

Chen Shuren looked at the accounts of previous years very carefully and asked Zhou Tiedan how the past prefects responded to the quota checks from the top. He learned that no one had checked them now, and it was all based on the local authorities' conscious report. The last stone in his heart fell to the ground.

Since that's the case, you can open the fire-making machine from next year!

After solving the policy level difficulties, Chen Shuren continued to inspect the technical situation.

He walked around the workshop and saw several semi-finished bird gun barrels, which were round iron rods. Zhou Tiedan also demonstrated the follow-up process to him - the firearms in the late Ming Dynasty, and they were still processing the barrel by forging solid iron rods and boring deep holes.

Although Chen Shuren didn’t have much knowledge in science and engineering, he couldn’t help but frown after seeing such a primitive operation. This process must be too efficient.

Of course, he also knew that military production should not just save trouble, otherwise the quality would be unsupported.

For example, the cheapest casting method is definitely not possible. The casting materials are not dense enough, and there are pores and sand holes, and the surface will be uneven and the airtightness is insufficient.

If you are building a cannon, the wall of the pipe is very thick and occasionally there is a sand hole and it can withstand it. The barrel of the musket gun is too thin, and once the sand hole is broken, it will explode.

"When you build a gun barrel, do you have to drill holes? You never thought of rolling it up with cooked iron sheets and reheating and welding to treat the gaps? I really think that the gaps are not solid, so I can set a few more iron rings and iron hoops outside."

After thinking about it, Chen Shuren seemed that the ancient Western gun making techniques I had seen in his previous life were made of iron sheet curved welding. Although the barrel with welded seams is definitely resistant to the pressure difference of the chamber drilled seamlessly, the processing speed is definitely much faster.

Unfortunately, after hearing this, Zhou Tiedan looked confused. He could only say that he would find a way to think about it and try it, but he really dared not guarantee the strength of the pipes he made.

He had a lot of practical experience and explained patiently: "Mr. Futai, the strength of this gun barrel is insufficient, so it is definitely not possible to just add iron hoops.

If the iron hoop is too loose, when the iron hoop is needed to restrain the expansion force of gunpowder, the inner tube must have exploded, at least it will be a crack. In the end, it will only cause the inner tube and the iron hoop to be cracked successively.

If the iron hoop is too tight, it can be stressed with the inner tube, and it cannot be put in at all during the initial processing."

After hearing this, Chen Shuren carefully simulated it in his mind. It was considered a thousand thoughts from laymen, and occasionally one thing was:

"You can try heating the reinforced iron hoop first, burn it until the hole becomes slightly larger, and then put it on the cooled inner coil tube. When the outer ring iron hoop is cooled and locked, it will be locked."

Historically, French people loved to use this craft, but the French used the materials of two layers of gun barrels inside and outside, called the "self-tightening tube craftsmanship". Shenshuren could not let craftsmen make two pipe walls of the same length, so they could only focus on strengthening a few rounds of iron hoops at a few points, which was a much worse than the French goods in the late 18th century.

After hearing this, Zhou Tiedan thought about it for a while and suddenly felt that the prefect was really imitating the same.

As an old blacksmith, he could vaguely feel the effect of "thermal expansion and contraction", but he had never learned physics and could not systematically summarize the usage of these experiences.

Chen Shuren's scientific summary and his practical experience combined with his practical experience have the effect of one plus one being greater than two at once.

Chen Shuren didn't make things difficult for him, so he asked him to think about it slowly after he went back. It didn't matter if he didn't know how to do new crafts for the time being.

After a comprehensive inspection, he pointed out another problem: "We can not mention the pipe rolling method for the time being, but your drilling method is really not good. You see, for example, the inner hole and outer tube centers are not fixed at all.

How much power a musket can exert is determined by the thinnest side of the pipe wall. The eccentric error of the drilling hole is so obvious, one side is thin and the other side is thick, and the thick side is completely wasted. How can your drilling bed not even reach the level of "The Art of the Heavenly Manufacturing"?"

Chen Shuren said, asking his entourage to bring a book, which was Song Yingxing's "The Creation of Things in Heaven" published three years ago.

In fact, there were many records of the Ming Dynasty that were relatively advanced processing machine tools at that time.

There are lathes with wooden poles that flow from Europe;

You can also replace the turning tool with a drill for boring;

It can also be replaced with a grinding wheel to polish jade and car beads.

The picture is also included in "The Art of Heavenly Works" and the picture corresponding to the drilling machine boring machine is called "The Pulverizing Tube" and the picture corresponding to the grinding gurder of the car bead is called "The Pulverizing Tube".

Chen Shuren had never read "The Art of Heaven" in detail before traveling through time. After all, as a modern person, he was too lazy to read the engineering and technical books of the ancients.

However, after returning to the Ming Dynasty, when he and Fang Yizhi and Dong Xiaowan were tinkering with shuttle looms and other small inventions, in order to brainstorm, he specially paid a lot of money to seek "The Creation of Heavenly Works" and "The Complete Book of Agricultural Affairs". Later, he found that these books had something, so he studied hard when he had time and really discovered a lot of good things.

Many technologies were actually available in the late Ming Dynasty, but ordinary people and illiterate craftsmen did not know about them, and the literati were disdainful to spend the money to promote them.

Zhou Tiedan looked at the book presented by Chen Shuren, looked at it for a few moments, and his eyes were straightened. He exclaimed that the illustrations on the book solved some of his doubts for many years and made him suddenly enlightened.

"So I did have these things in the Ming Dynasty? Didn't it be that the Folang Jiren and the Red Barbarians? I have been using those drilling platforms with much crude benzene over the years, and I have never thought about improving them... Sir, who wrote this book when? If I had obtained it a few years ago... Alas."

Chen Shuren also gained a new understanding of the obstruction of this era:

"This book was found in Suzhou and was found in Chongzhen ten years, which was three years ago. Otherwise, you would be closed to Huangzhou. Forget it, I will pay attention to you in the future. If there is any good thing outside, I will communicate with you as soon as possible."

Zhou Tiedan thanked him repeatedly, saying that he would study hard and improve the drilling machine grinder lathes, especially the problem of improving the centering accuracy of the fixing fixture.

Chen Shuren didn't force him too much: "Forget it, it seems that whether it is the drilling method or the rolling method, you have to study it carefully for several months before you can get a glimpse. Don't be busy building gun barrels recently. Sharpening the knife will not delay the chopping of wood. Lay the foundation first and let the craftsmen understand the principles thoroughly.

In the past two months of winter, in addition to studying, you can create some cold weapons for our army first. I want a batch of this new type of axe, and a spear tip with an iron hoop at the bottom. These swords, guns and other things can always be beaten, right?"

As he said that, he took out two sketches that Dong Xiaowan had for him to draw and spread them directly on the workbench in front of him.

"This kind of spear head with an iron hoop is called a bayonet. This iron hoop must be as thick as the outer tube of a bird gun or a Lumi gun. At that time, it can be directly attached to the head of the gun barrel, so that the firearm hands can also have certain ability to fight against cavalry and array melee battles.

If you feel it is not easy to fix, you can try using the "rolling tube method and iron hoop" mode mentioned earlier, first create a few gun barrels, and then make sure that the bayonet hoop can be stuck with the original iron hoop outside the gun barrel. Anyway, try to clamp as tight as possible. You should think about what mechanism you want to prevent the bayonet from remaining in the enemy's body after the gun is pulled."

The oldest musket bayonet in history is not even tied outside the barrel, but inserted directly into the barrel. Shen Shuren only knew about this in his previous life, "Imperial Total War" RTS game -

In the Empire Full Battle Series, the first bayonet technology pointed out is the "barrel interpolation bayonet", which is very scammed. Once the command to "get the bayonet" is issued during the battle, you can't shoot again during the rest of the battle, and you can't pull it off after getting the bayonet.

Of course, there was no need for the Shen Shuren to take all the detours taken by Europeans in the early 18th century, so he came up and sought an outer hoop bayonet to ensure that he could still open the fire after he got on the bayonet.

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