Cutting 1719

Chapter 22 Cannon Making
Seeing that Lei Tuozi had finally gone berserk, Ning Yu no longer intentionally angered him, but just sighed: "It's not that the boy doubts the master's ability, but that the times are advancing. Dare to ask the master, the current method of making artillery is the same as that of the Ming Dynasty. What's the difference?"

Lei Tuozi was speechless when asked, so he had to say: "It's not easy to make a cannon, as long as it's easy to use." But he didn't have enough confidence to speak.

Ning Yu pressed on step by step again, and said: "I see that the current Lvying artillery is all brittle and hard, and the bombing accidents occur frequently, and the soldiers dare not put [-]% of the gunpowder. Every time they fire a cannon, they only dare Put in five points, and some gunners only put in three points, how is this shooting medicine different from fireworks?"

"In order to increase the power, the wall of the artillery tube was constantly thickened, and a large general cannon of several thousand catties appeared. However, the real power of this kind of cannon is really worrying, and it is inconvenient to transport. It is really useless. The future cast cannon The method requires three points, the lighter the cannon, the finer the workmanship, and the greater the force, such a flexible use is better than the cumbersome giant cannon."

Lei Tuozi said in a muffled voice: "But now it is limited by the pig iron used to cast the cannon. The body of the cannon made of this kind of pig iron will inevitably have honeycomb holes, which cannot be smooth, and it is difficult to grind it. Naturally, it cannot be used quickly when firing the cannon. But if it is made of wrought iron, there are more problems. First of all, this wrought iron cannot be cast, it can only be forged. Forget it, let me tell you why, my old man believes you, you are an expert, you say Hit whatever you want."

Ning Yu knew that the most important thing now was to cast cannons. As for the iron-making matter, it can be put on the back burner, and the important cannons should be solved first. It takes longer to make, and the clay mold can only be used once, so every time a cannon is cast, a large amount of clay mold is needed, which naturally takes a long time. Then you can choose an iron mold to cast the cannon, and use the iron mold instead of the clay mold."

"Iron model? Iron model!" Lei Tuozi's eyes lit up, he is a master who is old in this way after all, this thought is like piercing the window paper, and now he has a simple idea, and he has a bottom line.

Lei Tuozi was in a hurry to do things, and immediately turned over, ignoring Ning Yu who was beside him, and yelled at the men who were casting farm tools: "Clean up guys, cast cannons!"

Those men stopped their work and started to get busy in and out. Originally, this was the cannon casting workshop, so all the materials needed for cannon casting were available, as well as the blueprints, so they pulled them out and started to make Preparation.

Lei Tuozi hunched over, then knelt down towards Ning Yu tremblingly, and said: "This time I got the guidance of the young master. If it can be done, Tuozi, I will be grateful!"

These days, craftsmanship is the guy who eats, and it is also life.It is precisely because of this skill that he, Lei Tuozi, is able to support dozens of people in this big family, and he can also take in a few apprentices to support him until his death.Now Ning Yu is equivalent to telling him a craft for no reason, how can he not be grateful to Dade?
Ning Yu was not too polite, and kneeled down, saying: "Master Lei, what the boy put forward is just an idea, how to do it, you have to study it carefully."

Lei Tuozi continued to kneel, and said: "Young master, please stay here for a few more days, and hope that you can give me more advice."

Ning Yu thought that he could cast the cannon quickly, so he stayed to give pointers.

In the next few days, Ning Yu started casting cannons based on his memories of his previous life and then combined with Lei Tuozi's experience.

The key point of the iron mold casting method is to cast the iron mold first. Lei Tuozi and others first made the clay mold, and then used the car plate to spin the inner surface to make the surface smooth and regular, and then dried it for later use.

It takes only one day to make the clay mold, and then use the clay mold to overturn the iron mold, put the muzzle section upside down on the mud plate, fill one of the petals with mud, after drying, cover the clay plate, The mold is tightly clamped, and a petal of the first section of the iron mold is obtained after pouring.

Then use this method to cast another iron mold, and then pour it joint by joint to form a whole set of iron molds that are joined together layer by layer.It took only four days to get to this point.

Looking at the iron mold that had just cooled down, Lei Tuozi was extremely excited, and said respectfully to Ning Yu: "My lord, you can first apply a layer of silt paint, and after the mud core is made, you can pour the gun body. "

Ning Yu thought for a while and ordered, "You can add some coal powder to this paint to reduce air bubbles."

Lei Tuozi was overjoyed and said, "What you said is very true." He ordered his craftsmen to prepare coal powder.

After the mud core was completed, Lei Tuozi personally poured molten iron into it. In the smoky atmosphere, Ning Yu looked at the dark faces of the people and couldn't help but smile. These people are the real treasures of the Ning family.

Isn't the reason why Ning Yu is so polite to Lei Tuozi because technical talents are scarce and precious in this day and age?
After the molten iron was poured and solidified a little, Lei Tuozi asked craftsmen to take off the iron mold, remove the burrs on the gun body while it was still red hot, and then remove the mud core inside after it was completely cooled. Clean, the cannon body is cast.

Lei Tuozi looked back at the iron mold again, there was almost no damage, and he could continue to cast it. He said happily, "Congratulations, my lord, this method of iron mold casting cannons is indeed feasible! It can be said that it is worth hundreds of labors for the cost of one labor. Not only does it save time, but the cost of casting cannons is also greatly reduced!"

Ning Yu naturally knew that this method would definitely work, so he wasn't too surprised, and said lightly: "So don't worry, Master Lei, install the gun mount fire door tomorrow, let's try how powerful it is."

Lei Tuozi nodded in a hurry, and then directed his craftsmen to start equipping the gun mounts. Seeing that the busy days had paid off, and thinking of the rewards in the future, everyone mustered up their energy to do a good job.

With the concerted efforts of everyone, a mother-child cannon was cast in just one day. Ning Yu arranged for people to pull the cannon to the northern foot of the mountain. When outsiders come, it can be used as a test site.

Lei Tuozi stroked the body of the cannon and said excitedly: "Young master, this iron mold cannon is really miraculous. Since the mold is made of iron, there is no moisture in it, so there are no pores. In addition to the soot you mentioned, the whole The barrel of the gun is cast into one piece, and it will definitely not blow up if it is fired casually, I think the dose of gunpowder can be increased to [-]% this time!"

Ning Yu felt relieved when he saw that the cast cannon was completed, so he smiled and said: "Master Lei, before I came, I heard people often say that Yunmeng's Lei Tuozi has always been fearless, why? The Master Lei you saw today is gone?"

Lei Tuozi's face turned red, he twisted the braids on the back of his head around his neck, and spat hard on his hands.

"Add ten percent!"

(End of this chapter)