Qiming 1158

Chapter 669 Forging qualified iron for His Majesty!
Su Yonglin followed Qiu Yuan to the cannon casting room, and saw the craftsmen working on high-temperature cast iron.

"Who came up with this method of iron core copper body?"

Su Yonglin asked Qiu Yuan with great interest.

"It's a craftsman, called Wang Tietou, who has been dealing with iron for half his life. That's what he said at the time, and the minister thought about it like that, and he thought this method might be feasible. After all, copper is used to cast money. If you come to cast a cannon, I'm afraid you won't be able to afford it financially."

"You are very thoughtful, and this is indeed a problem."

Su Yonglin nodded and said: "Let's not talk about us, the Southern Dynasties will die if they are short of copper, and they will lose money if they make money. When we come to us, we may not be able to avoid the custom. I think that we must make some changes no matter what, but changes will take time. , it can't be reversed for a while."

"So although the artillery can be successfully built with copper, I feel that this will not work, and there will be problems."

Qiu Yuan opened his mouth and said, "Just as Wang Tietou came up with this idea, let's try a little bit to see if we can use iron and copper together to complete the casting of the gun body. If it is possible, it would be a good idea."

Su Yonglin was silent for a while, thinking about whether there was any help he could provide. After thinking about it, he suddenly thought of a key point like a bolt of lightning through his head.

"By the way, when you cast the gun, remember that the thickness of the gun body can't be the same."

"what?"

Qiu Yuan was a little stunned, blinked his eyes, and asked, "What do you mean by Your Majesty? This minister doesn't quite understand."

"Before you cast guns, is the thickness of the gun barrel the same from the muzzle to the breech?"

"Uh... I really haven't noticed this, Tietou! Come here, Tietou!"

Qiu Yuan yelled into the cannon foundry, and a blacksmith in his thirties with a dark face ran over after a while.

"What's the matter... Yo! Your Majesty! Hastily people have seen His Majesty!"

Wang Tietou saw Su Yonglin standing beside Qiu Yuan at a glance, and greeted Su Yonglin at a loss, but was stopped by Su Yonglin raising his hand.

"Okay, okay, don't be too polite, the Ming Dynasty didn't pay attention to this."

Su Yonglin asked with a smile: "Tietou, tell me, when we were casting guns before, was the thickness of the gun barrels the same from the muzzle to the breech?"

Wang Tietou blinked.

"Yeah...isn't it?"

"Now, one of the problems, right here."

Su Yonglin clapped his hands and said, "You can't do this. When casting a gun, the thickness of the gun's tube should gradually increase from the muzzle to the breech. The thickness of the breech tube should be the thickest, while the muzzle can be slightly thinner. "

"why is that?"

Qiu Yuan and Wang Tietou looked at Su Yonglin together.

Su Yonglin thought about it for a while and decided to explain it to them in easy-to-understand words.

"You think, we build guns to drive the iron bullet out of the barrel of the gun, so that it can fly farther and hit harder than a trebuchet, right?"

"Correct."

The two nodded.

"Then how do you think the iron bullet and the gunpowder work in the gun barrel to make the iron bullet fly out of the gun barrel?"

"Um... it was the gunpowder that exploded in the barrel of the gun, and then blew the iron bomb out, right?"

Wang Tietou gestured with his hand: "Boom, bomb yourself first, and then bombard others, otherwise the barrel of the gun will not be blown up, that's what I think."

This guy also gave the feeling of seven wounded fists.

However, it is not wrong. The essence of this thing is to blow up yourself first, and then blow up others. You must be able to withstand the bombing to ensure that the enemy is killed.

So Su Yonglin smiled.

"Yep."

Su Yonglin pointed at Wang Tietou: "The iron bullet and gunpowder should be stuffed into the breech of the gun. The breech of the gun is where the gunpowder ignites and explodes. Think about it, ignite the gunpowder, bang the gunpowder to explode, and then push the iron bullet out of the gun barrel. , so that the iron bullet can fly out.

Where did the gunpowder explode?Just at the tail of the gun, if this place is not thick enough, wouldn't the barrel of the gun be directly blown through?Compared with this, other parts of the gun barrel don't need to be so thick. You have failed many times in your experiments before, and I think there is a problem here. "

Su Yonglin explained, Qiu Yuan and Wang Tietou fell into deep thinking, and after thinking for a while, the two found that it was really such a statement.

They all know the power of gunpowder explosion. If the iron pipe is not thick enough where the gunpowder explodes, wouldn't it really be unable to withstand the force of the gunpowder explosion?Shouldn't it be fried?
When Wang Tietou thought about it, he really felt enlightened.

"It's still your majesty! How else can you say that your majesty can be an emperor!"

He smiled and looked silly.

Just as Qiu Yuan was about to scold him for talking nonsense, Su Yonglin directly raised his hand to stop Qiu Yuan.

"Then I have pointed you to a direction on this issue. You should follow this direction to solve the problem. The thickness of the current gun barrel is obviously not enough. It should be thickened and the gun tail should be the thickest. From the gun tail to the gun muzzle, you can Gradually get thinner."

"Understood, understood, we will understand after saying this, hahaha, in this way, maybe we can really succeed hey!"

Wang Tietou said and then jumped and ran into the workshop.

"This Wang Tietou, this is too unruly. Words always come out of the mouth, and they are nothing but brains!"

Qiu Yuan complained a little about his disrespect in front of Su Yonglin, but Su Yonglin didn't care.

"He's not a courtier, so what's he doing with so much red tape? All the gunsmiths want is to make the guns well, and the rest are useless. You can say whatever you want, and he can still say that the sky will collapse?"

"Then, Your Majesty, if this test is successful, can we not use bronze cannons?"

Qiu Yuan looked at Su Yonglin.

"There's no need to be so deadly, it's okay to use it properly, but even if we have enough copper on hand, I don't recommend using copper to cast the gun completely. Copper is not easy to fry, but it is easy to be soft. , if the temperature is not cooled in time, the gun body is easily deformed, and the danger is not small."

Su Yonglin smiled and shook his head: "So iron must be used, but iron cannot be used, but under the current situation, it seems that we do not have very good iron that can withstand the force of the explosion.

Even if I use my method, it's hard to say whether it will be successful or not. I'm afraid I can only beat it once or twice. If I beat it too much, it will still be fried. The quality of the iron is not good. How can this be good. "

After speaking, Su Yonglin's face was full of distress. He was troubled by the fact that he was not a practitioner in the steel industry and could not master the technology in this area, so that he couldn't help anything when it came time to do it.

"This... Your Majesty, to tell you the truth, the iron that can be used to cast guns is already the best quality iron. If these irons are used to make weapons, they will definitely be called magic weapons, and if they are equipped to the army, they will definitely get Their unanimous praise."

Qiu Yuan is very confident in the work he is responsible for.

Su Yonglin was noncommittal.

"But the problem is obviously not solved. I think there are many reasons. The most important thing is that the temperature during iron making is not enough... Now iron smelting mainly uses the method of pouring steel, right?"

Qiu Yuan nodded.

"Yes, it is basically the method of pouring steel, but a lot of improvements have been made, at least it is much better than the previous dynasty."

"However, no matter how you improve it, it is still the method of pouring steel. I read Shen Kuo's Mengxi pen talk before, and I read what Shen Kuo thinks that the method of pouring steel is insufficient. He said that after two or three refining, pig iron is self-sufficient, and it is still soft iron. It seems, Shen Kuo doesn't think the steel filling method is perfect."

Su Yonglin looked at Qiu Yuan.

Qiu Yuan frowned.

"Then Your Majesty thinks that the minister should continue to improve the method of pouring steel?"

Su Yonglin nodded.

"In the past, there was no demand, and we could still survive. Now we need to bring powerful artillery to the world and contribute to the Ming army's sweeping of the world. This is a very urgent matter. To improve.

Once improved, the smelted iron can be used not only to cast artillery, but also to cast sharper swords and swords, and to cast stronger shields and armors. Great, Qiu Yuan, a piece of iron can change too many things. "

Qiu Yuan took a deep breath.

"I know what Your Majesty said, and I will try my best to make qualified iron for Your Majesty!"

(End of this chapter)