Daming One Piece

Chapter 87 I want to make a fortune and cast cannons (first update, please recommend, please collect)
Beigang is not big, but it has everything you need. Carpenters and the like are a must, and there are even potters. The pottery they produce is indispensable for life. After all, many basins used by ordinary people in this year The bowls and bowls are all pottery.

Of course, there are also blacksmiths.

In this regard, Beigang is very similar to traditional Chinese villages. Not only are men farming and women weaving, but small handicraft workshops are also indispensable. It is true that although a sparrow is small, it has all internal organs and is self-sufficient. It's like a paradise.

However, it is not the same as the traditional village.For example, the blacksmiths in the blacksmith shop are a few Japanese.

"... Taro is a blacksmith my father invited from Nagasaki. Not only can he make knives, but he can also make bird guns and even armor. The craftsmanship of Taro's family has been passed down for generations, and the weapons made are all The best."

On the way to the blacksmith shop, Yan Ruyu introduced while walking.

"Then why did he defect to the old master?"

Shi Yiwen asked curiously.

"Hey, what else could it be for? It is said that Japanese craftsmen made cows and knives and couldn't get silver, but silver is nothing. That year, a samurai picked up a knife at his house. When he was trying the knife, his wife came out , As a result, his wife was cut in two with a knife. Since then, Taro has moved the idea of ​​leaving Japan. In front of the samurai, people are not human at all. If the samurai walks on the street, ordinary people will not kneel down. Even if you knelt down and looked up at them, that would be disrespectful, and it would be useless to chop off your head if you were unhappy. It would be your honor if you tried the knife and lost your life. If not, the head of the family will bring their family out."

Shi Yiwen was taken aback by Guo Huaiyi's explanation, just this...is this the way Japanese craftsmen were treated in ancient times?It's no wonder that the Japanese like the strong in their bones. They have been here for a long time, and they are used to being abused.

Well, if you have a chance in the future, let's abuse it!
As soon as they arrived at the blacksmith's shop, the blacksmith inside who was instructing apprentices to forge iron hurriedly rushed over and knelt down to worship.

"I have met the head of the family and the owner of the ship."

"Master Taro, get up quickly, we don't like this here."

Yan Ruyu ordered.Then she asked a few more simple questions before explaining her intentions.

"Cannon?"

Taro was surprised.

"Miss, we have Master Hu's repair and iron furnace here. Although it can melt iron, we don't know how this cannon is made."

"It's okay, I know."

Shi Yiwen said casually.

"Go, take me to the furnace."

The iron furnace is in the backyard of the blacksmith. It is in front of a two-meter-high iron furnace. The craftsmen are pouring charcoal into it.Charcoal iron smelting!
Seeing this scene, Shi Yiwen nodded and said.

"Master Guo, is the iron you brought from the ship made of charcoal or coal?"

"It's all Fujian's local iron. Of course it's made of charcoal. Coal? Fujian doesn't have it."

Guo Huaiyi's answer made Shi Yiwen laugh.

"Yes, yes, so the raw materials will be fine."

In ancient China, coal was first used to make iron. Although the combustion value of coal is higher than that of charcoal, it can save a lot of charcoal.But the disadvantage of using coal to make iron is that the product has a high sulfur content, which results in poor quality iron.This is also the reason why "birds can only use Fujian iron", because in the Ming Dynasty, only Fujian used charcoal to make iron. It's not that they didn't use coal, but because Fujian didn't produce coal at all in this era.

But for the manufacture of firearms, charcoal ironmaking is the best. You must know that in the age of great voyages, the Swedish iron used in the cast iron guns of the British Navy not only has the characteristics of low phosphorus, but also because of charcoal refining. For a long time after the invention of coke, the naval casting guns still used charcoal to ensure the performance of the artillery. This is also one of the secrets of the British navy's dominance in the world. It's a worry to use, and I don't know when it will explode.

"It's a pity that there is no suitable equipment. If it is not for testing the quality of pig iron, it would be good."

Shi Yiwen secretly said to himself in his heart.

"Our furnace, how much iron can be produced in one furnace."

"Returning to the son, 800 catties, at most one thousand catties can be paid."

One thousand catties, that is, six hundred kilograms, how much does the Dutchman's cannon weigh?

Well, let's go back and weigh the guns first.

But before leaving, Shi Yiwen ordered the workshop to make some preparations, such as preparing some sand, fine soil, sawdust and other raw materials.

Cannon casting is a science. It doesn't mean that as long as you can cast molten iron, you can cast cannons. You can definitely cast them, but there is definitely no way to guarantee their performance.After hundreds of years of evolution, European cannon casting technology has long evolved into a science. From the diameter of the muzzle, to the thickness of the tail and the double diameter of the barrel, there are corresponding proportions. This is what Europeans use. researched over hundreds of years.Not to mention the time-consuming and labor-intensive groping from scratch, and still not getting started, the easiest one is of course a copycat.

After leaving the blacksmith shop, Shi Yiwen got busy.The busy work is very simple, nothing more than measuring the size of the artillery there.

In China, "reverse engineering" is a "basic skill" that any engineering student must master. In fact, this skill is not complicated. In another world, the reverse measurement of mechanical parts has already been realized electronically. I can only make my own tools. After all, the supermarket in the space only sells simple measuring tools such as rulers, but even so, it is enough.

"The diameter of the muzzle..."

Carefully measuring the size of the cannon with a simple self-made measuring tool, Shi Yiwen was making records. While measuring, he would also study the material of the cannon. The material is not as good as he imagined.

In fact, European cast iron cannon technology was not very advanced in this era. The root cause is that cast iron technology is underdeveloped. In ancient times, this technology depends on China, which benefits from advanced cast iron technology. The cast iron cannons produced by Macau Cannon Factory are even famous brands. , not only sold to Ming Dynasty but also sold back to Portugal’s colonies in India and Africa.

But this does not prevent people from clicking the right technology tree.In the end, they developed modern metallurgy step by step by introducing Chinese cast iron technology.

"When we have accumulated enough materials later, let's build an iron-making blast furnace first, and directly improve the quality of the iron."

When Shi Yiwen was thinking in his heart, his hands were not idle, and he continued to measure the size of the cannon. Although he encountered a little problem when measuring the inner chamber, it was not a problem for engineering students, it was very easy After solving the problem, the drawings of a set of 10-pound cannons were freshly released that night...

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(End of this chapter)