The ancients: Ten years of sharpening a sword.

However, for Li Tianyang and his team, their sword sharpening time is far more than ten years!

Since the birth of Tanmen Qixintang, Li Tianyang and they have actually begun to invest in the development of arquebuses and artillery, but due to the constraints of material resources and manpower at that time, even if Li Tianyang knows that the future is the era of firearms, he can't invest too much in it.

After Li Tianyang and them came to settle in Bengang and flourished, with more favorable economic conditions and external environment support, Chengcai and their R&D institute never stopped the research and development of firearms.

Especially after arriving in Bengang, the relationship between the Bengang team and the Portuguese and the Dutch in Macao has gradually improved, and Li Tianyang quietly transported away the Dutch craftsmen who were hidden, as well as the technical information quietly stolen from the Macao Cannon Foundry, which helped them a lot.

It is precisely with the advanced technology from the West, combined with the results of their own research and development over the years, that they have achieved today's success.

Perhaps in the eyes of outsiders, there are many accidents in the success of their R&D Institute today, but in Li Tianyang's own heart, they are convinced that they will succeed, but they can't estimate that success is just today!

"In fact, we have thoroughly understood the technology of casting cannons, and we have been able to manufacture more than 1,000 catties of artillery in the first two years of Xiangshanao's pig iron casting and copper cannon casting technology!"

"As for the two or three thousand catties of cannons, it's not that we can't cast them, but after all, it's the technology of stealing from the Western people in the interpersonal circle, and the power of the cannons we cast is always two cuts worse than the power of other people's houses."

"These technologies can't be broken through just by us stealing masters, or through a few ordinary Western craftsmen, so after facing the barrier, we decided to make a breakthrough in the material of the casting cannon."

"As we all know, the ductility and casting performance of copper cannons are good, but as the cannon is used for a long time, the inner chamber of the copper cannon with soft material will always be deformed; The pig iron casting cannon is more convenient and concise, but the pig iron performance is brittle, and it is easy to produce bubbles, cracks and other defects during casting, which are the taboos of the cast cannon, and the scrap rate has been high. ”

"However, the material of 100 refined steel is very suitable for casting cannons: its material is tough and elastic, and it can withstand more gunpowder than copper and pig iron materials with the same thickness, which means that they must be more powerful and have a longer range than copper and pig iron cannons when they are successfully cast!"

"It's just that everyone understands that although the performance of steel is good, its output is limited, and the Ming Dynasty is said to have an annual output of only tens of thousands of catties, and it is really luxurious to use it to cast cannons!"

"Fortunately, brother-in-law, you designed the blast furnace steelmaking technology for all of us, until the end of last year, our blast furnace steelmaking technology finally made a major breakthrough, and one furnace can produce thousands of catties of steel, which can fully support our artillery casting needs!"

"But I just want to ask you, brother-in-law, how did you know that this blast furnace could make steel?" This is one of the questions that Chengcai has been holding in his heart, many times Li Tianyang always gives the result of a plan as if he is not a prophet, but what they need to do is to make up for the process, such as preserved eggs, soap, cement, and so on.

"Well, in fact, when I was a child, I don't remember which ancient book I saw such a method, and then drew a gourd to draw it, and now I don't remember what book it is!" Li Tianyang is very embarrassed, with the progress and growth of Chengcai over the years, Li Tianyang could still fool the past things before, but now in front of Chengcai and them, many times they can't hide it, and they can only push it to the books of the ancients.

Fortunately, at this time, Chengcai was on the rise, and he did not break the casserole to ask the end, so that Li Tianyang escaped.

However, if Li Tianyang knew that the so-called blast furnace drawings he gave himself were actually completely different from the blast furnace principle developed by Chengcai at this time, then I don't know how he should feel!

The reason why he thought of Bing's plan to insist on letting Chengcai develop steel from blast furnaces was really the only thing that Li Tianyang knew about the little knowledge that he thought would be of great use to this era.

However, the so-called blast furnace knowledge that Li Tianyang knew at the beginning was impregnated with the hard work and incredible historical stories during the Great Leap Forward in his previous life, and secondly, it was the relics left by the rural blast furnace when he was making steel.

It is precisely because of this knowledge that Li Tianyang is convinced of the possibility of blast furnace steelmaking, but it is also this half-understood understanding that makes him not know the real history of that era at all.

It turned out that the so-called large-scale steel smelting seemed to be remarkable at that time, but I am afraid that people who actually experienced that era would scoff at the so-called steel production at that time.

The fact that the earth blast furnace that tries to produce steel itself is not false, but the only thing that Li Tianyang does not know is what the material of this earth blast furnace steelmaking is, which is basically the iron pot, iron catalpa and other steel products used in various households.

Such steel materials are put into the earth blast furnace, and if other materials are refined, it is really rare.

However, fortunately, Li Tianyang came up with such a bad idea, and at the same time, he also gave a technical guidance, and took out what little chemical knowledge he had left: the so-called difference between steel and pig iron is that pig iron still contains a lot of carbon elements, while steel contains less carbon elements; If you want to remove the carbon in pig iron, you need to let the melted pig iron fully contact with the air and burn!

This, that is, Li Tianyang's shallow chemical knowledge to the extreme, only has some operational knowledge, and it is also thanks to Li Tianyang's technical guiding ideology, even if the soil blast furnace technology he gave itself is a wrong technology, but after years of research and development, the blast furnace technology has finally moved in the right direction.

At this time, the blast furnace technology that Chengcai said in their mouths is actually very different from the real blast furnace technology of later generations, but it is closer to the open hearth and converter technology of later generations, but it is only a compromise in technical differences.

(End of chapter)