The steel ingots obtained from the first steelmaking, and finally after many inspections by Yan Zheng, all the properties are between medium carbon steel and high carbon steel.

Although there is not much steel that can be made at one time, crucible steelmaking seems to be naturally suitable for starting many projects.

For example, after the success of the experiment, Yan Zheng immediately stared at the ironmaking plant and made boring knives, boring bars, files, triangular drill bits and broaches, each of which made several specifications, although the accuracy was not guaranteed, but it was only sufficient.

And after these knives are made, they are also surface nitrided and carburized.

To put it simply, the leather is placed in a sealed clay pot and charred, and then the charred leather carbon is applied to the knives, and the knives are wrapped in clay.

Finally, as long as these clay wrapped knives are put into a clay crucible, and after fifteen minutes of high temperature treatment, the surface carburized and nitrided knives can be obtained, and these treated knives have harder hardness.

Through the comparison of the file before and after carburizing and nitriding, Yan Zheng found that the treated file will not be scratched when polishing the same iron rod, but directly grind out iron filings.

Such a tool has reached the level of processing medium and low carbon steel. In addition to the inability to process large tools, it can basically meet Yan Zheng's current requirements.

On this basis, Yan Zheng asked the tribal carpenters to work together with the blacksmiths, and under his personal command, they built a clay gear cutting machine.

The core components of this gear cutting machine are files, high-carbon drills and broaches, which can be understood as a device that can fix the parts to be processed.

Then, on the basis of fixation, through this device, the angle and number of gears to be processed are quickly marked, and then the three tools are processed by hand.

If you have a better power device, this gear cutting machine can be more efficient, and if you want more and better power device, you have to look at the ability of gear processing.

Therefore, the gear cutting machine is made in preparation for the subsequent soil machine tool.

It's just that before that, Yan Zheng, who didn't have the ability to drill deeply, decided to try to build a wave of guns first!

Because the conditions for making guns directly are ripe, the steel trained by the crucible steelmaking method can be directly used to produce guns and cannons.

Under his command, the ironworks again opened the furnace for crucible steelmaking.

After the furnace is opened, the crucible is removed, a part of it is poured into the mold groove, and then the surface is sprinkled with lime and charcoal.

After it was almost cooled, several big men worked together to place a high-carbon steel mullion in it.

It is then moved aside for forging, so that the steel is rolled into a tube around the mullion.

This method is naturally inefficient, but it can be slower if you use the sand mold method.

If you use the iron mold method, this group of people is not proficient in craftsmanship, and the iron mold made cannot pass the test.

Yan Zheng was in a hurry to play with the gun, so he could only try to make one with this method.

In this way, after forging for most of the day, Yan Zheng got a perfect barrel.

After processing with a simple boring tool, you can make an ignition hole.

Then it was fitted with the butt that the carpenter had made, plus a trigger similar to a crossbow machine. Finally, after tying the barrel tightly and adding a crosshair, you get a very rudimentary arquebus.

For this arquebus, Yan Zheng tossed back and forth for ten days, plus making knives, it took more than twenty days in total.

And the reason why arquebuses were made first was because there was no need for spring plates, and only the trigger of the lever principle was needed.

It is simple but powerful, and the Western colonists relied on arquebuses to defeat primitive tribes one by one.

…………

"Everybody's running away!"

Outside the city of Mo, Yan Zheng, under the watchful eyes of all the clansmen, began to experiment with the first arquebus.

Under the curious eyes of the clansmen, Yan Zheng hid in a trench and manipulated the trigger through a twine connected to the trigger.

"Ten, nine, eight, seven...... Two, one, ignition! ”

As the countdown ended, Yan Zheng pulled the twine, only to see the dragon head with the fire rope slowly hitting the medicine pool.

The moment it came into contact with the gunpowder in the medicine pool, there was a burst of fire, and then there was a bang, and a puff of gunpowder smoke filled the air.

There was a burst of exclamation among the clansmen, armed with fire and thunder!

That was their first thought, and only when the smoke cleared did they dare to step forward and take a look.

This time there was no loading, and the gunpowder was not granulated, just to get a rough estimate of how much gunpowder should be loaded.

According to the ideal state of gunpowder burning, the gunpowder is just burned out before the muzzle of the gun, so that the best effect can be achieved.

Of course, even during World War II, this could not be done.

Yan Zheng just wanted to see how much gunpowder this gun barrel could withstand.

He inspected the barrel of the gun and saw that there was no problem with it.

So he re-doubled the gunpowder and tried it again.

By the time of the fifth double, the poor barrel of the gun finally ended its short thud with a loud bang.

"Chief, how can this weapon kill the enemy?" Looking at the exploding barrel, Lu Wan asked with sparkling eyes.

The rest of the platoon commanders also looked at them with puzzled expressions, and several tests left a deep shock on them.

Yan Zheng smiled and said, "Have you ever thrown a stone?" This thing is equivalent to shooting a bullet at a very fast speed! In front of this weapon, your iron armor is as if it does not exist! ”

"That's amazing!" Lu Wan's eyes widened in surprise.

"Not only is your iron armor like it doesn't exist, but it's even farther than a crossbow!" Yan Zheng said again.

"Farther than a crossbow?" Ansan was also surprised.

Zhang Sanfeng said with a smile on the side: "The sound of this weapon is like thunder when it is fired, and it is accompanied by this firelight, if it is coupled with such great power, I am afraid that no one will dare to face it." ”

"Chief, I want to learn this weapon!" Lu Wan said excitedly.

Yan Zheng turned his head, looked at Lu Wan's steel-like muscles and said, "There is also the future battle, the role of personal bravery has been greatly reduced!"

In the future, we will pay attention to the overall battle, think about it, if we divide half of the people to use this weapon, the other half of the people, will we have to protect them? ”

Lu Wan thought for a moment and said, "It's the same as protecting crossbowmen?" ”

"It can be understood in this way, but now we can say a word, on Dongfan Island, our Mo Nabu is really invincible in the world!"

Yan Zheng laughed out loud as he spoke, and Lu Wan also laughed stupidly.

The other platoon commanders also laughed, which eventually turned into a loud laugh from all the onlookers.

These people would not have imagined that the appearance of arquebuses would mean the emergence of a new way of warfare.

In the past, it took years to train an archer, and not everyone could become an archer.

But with a musket, a farmer, whether thin or not, can immediately have a strong long-range killing ability as long as he trains for a few months.

In another time and space, the first time the Ming official came into contact with arquebuses should be in 1548 when the Portuguese and Japanese on Shuangyu Island were exterminated.

So purely from a technical point of view, Yan Zheng has already walked in front of the Ming Dynasty.

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