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The blast furnace is set up in the upper reaches of a river not far away, which the locals call the Meihe River with a nice name, and downstream is Meihua Lake, a lake near the Purple Mountain.

This blast furnace is full of three zhang, is piled up according to the requirements of Hao Fenglou, in order to prevent heat dissipation, Hao Fenglou ordered people to build a layer of refractory bricks half a meter thick inside, so this furnace is very large, in the middle of the waist, and let people pile up the stone house along the furnace wall, and the house has piled up a lot of coking coal.

This kind of blast furnace is different from the blast furnace of the ordinary bureau, on the one hand, the length is increased, on the other hand, the furnace wall is also widened a lot, this kind of blast furnace has been quite a bit of the prototype of the modern blast furnace, the bottom and the upper part of the furnace are carbon bricks, and the lower part is clay bricks; The whole stove was four people high, half a room in size, and there was an air inlet below, and it is worth mentioning the blowers made by the carpenters.

The blower is the same as the blast furnace, the same huge, the blower appeared in the Eastern Han Dynasty, and it takes the power of water drainage, that is, the bank of the turbulent river is selected to erect a wooden frame, a rotating shaft is erected on the wooden frame, a large water wheel is installed at the upper and lower ends, and a leaf plate is installed around the wheel shaft of the launching wheel to bear the water flow, which is a device that converts hydraulic power into mechanical rotation; In front of the upper horizontal wheel, a drum-shaped small wheel is installed, and the upper horizontal wheel is connected with a "chord"; A crank is installed at the top end of the drum wheel, and a connecting rod that can swing is installed on the crank, and the other end of the connecting rod is connected to the bellows. In this way, when the water flow hits the lower horizontal wheel, it will drive the upper horizontal wheel to rotate. The connecting rod connected to it moves, and the connecting rod reciprocates, so that the row fan opens and closes, and blows air.

This is almost the prototype of the modern blower. Naturally, Hao Fenglou made certain improvements in the bellows. It is a two-way blast, and the pistons inside are also enriched by a way to make the wind stronger.

The use of water conservancy and air blast not only solves the problem of manpower shortage, but also greatly improves efficiency.

Of course, to be able to make such a thing, on the one hand, thanks to his ancestors, Hao Fenglou spent a lot of effort. Only then did I find the relevant information of the Han Dynasty, and on the other hand, it was naturally Hao Fenglou's physical knowledge, as a traverser, although he could not study the complex machine, but according to some basic physical knowledge, he improved it on the original basis. But it's hand-to-hand.

The air wheel for draining water and the blower box have been connected together, the coking coal in the blast furnace has also been ignited, and the blower has begun to click with the crank movement under the drive of the water, and the air immediately blows out from the box mouth.

Hao Fenglou breathed a sigh of relief, it turned out that he was still afraid of those carpenters' bad things. I didn't expect these guys to be a success, but I almost underestimated them.

The water flow is turbulent, and the air outlet of the blower is also continuous, and the wind is extremely strong, and the air outlet is facing the air outlet of the blast furnace. Suddenly, the coking coal, which was originally only emitting black smoke and not completely burning, quickly began to crackle. The coking coal in the furnace burns immediately.

Hao Fenglou couldn't test the temperature, so he could only stand aside and wait with bated breath, and the craftsmen around him were also silent, they had some faint expectations in their hearts, expecting this young master to give them a new insight.

It's also strange to say, in the past, when I was in the Bureau, under the whip of the officials, everyone did things just to cope, and there was no day of messing around, how the iron was smelted had nothing to do with them, anyway, as long as the quantity and quality were completed, the officials would not care, and they were even more lazy to care.

If you really want to describe it, then this is how they used to live. And now, their mood is a little different, on the one hand, they are the food king, and they don't have to be beaten and scolded at every turn, and they feel a little embarrassed. It seems that if you don't make something good, you can't live with others. On the other hand, it was also Mr. Hao San who revealed that as long as everyone does well, they will be paid in the future, and they can also take their families to come, and they will still be supported by white rice, not only that, but if they have children in the future, they can also let people teach them to read.

Although I don't know what the limit of this is to do well, everyone tells themselves that they must do it with their hearts and must not be ashamed.

Smoke began to rise from the roof of the stove, and the whole stove was red.

Several discerning craftsmen took a deep breath and said, "Young master, in the past, we used to take coke, which was roughly this temperature. ”

Hao Fenglou knew that if it was only at this temperature, it would be impossible to completely remove the sulfur in the coking coal, and once it contained more sulfur, the coke taken out would be used to make iron, and naturally it would not even be as good as charcoal. He nodded: "Wait, it's not enough." ”

After waiting for another half an hour, the temperature in the furnace continued to rise, and Hao Fenglou saw that the opportunity was almost over, and said, "Take carbon." ”

Under an order, a few blacksmiths took out special tools to take out the hot coke, and the next thing was not small, but it also needed to be bonded, solidified, and contracted, but these, the blacksmiths were in the line, and they were busy for more than an hour, and the samples of coke were sent to Hao Fenglou's hands, Hao Fenglou looked left and right, and saw that the carbon body was black, without a trace of impurities, and said: "Uncle Huang, come and see, how is this coke?" ”

Huang Ting hurriedly came out of the crowd and took the coke in Hao Fenglou's hand, his eyes widened.

How much coke have I seen, the coke refined today is very different from the past, the color is black and shiny, and there is no variegated color on the whole body, which is really breathtaking.

He nodded and said, "My lord, this coke is no longer of the highest grade, but the best." ”

Hao Fenglou pursed his lips, in fact, he was most afraid of being serious in everything, but it was a pity that although there was more than innovation in ancient times, he was not serious enough and refused to refine, and in addition to some necessary improvements to increase the temperature of the blast furnace, the most important thing was to be serious.

He said: "In this case, then use coke to smelt a furnace of iron first, remember, to clean the furnace well, with this blast furnace and blower, the heat should not be a problem, coke is also the best, whether you can make good iron, it depends on you." ”

The craftsmen cheered up, some went to carry iron ore, some prepared coke, some went to clean the furnace, and after a busy time, another hour or two passed.

Then everyone started to make a stove, put in iron and stone, and ignited the coke.

While waiting, the temperature in the furnace begins to rise until a critical point is reached.

Immediately afterward, molten iron flowed out of a notch.

Someone couldn't help but exclaim: "It's molten iron, molten iron, iron turned into water." ”

If you talk about molten iron, everyone has seen it, but all of it melts into molten iron, but not many people have seen it, once it melts into molten iron, it means that a large number of impurities are separated from the iron.

The next thing has nothing to do with Hao Fenglou, iron is to be smelted into steel, and there is the most advanced technology at present, which will not be outdated for at least three hundred years, that is, the so-called steel filling method.

A day later, when a steel knife was sent to Hao Fenglou, Hao Fenglou tried the steel knife that had not yet been opened, and it was not very good, so he asked someone to call Zhu Zhiling, Zhu Zhiling had a little knowledge of swords, tried his hand, and couldn't help but praise: "Yes, it's a good knife." ”

Hao Fenglou smiled bitterly: "How good is it?" ”

Zhu Zhiling pursed his lips: "How do I know this." ”

Hao Fenglou had to sigh bitterly, and summoned a few blacksmiths' backbones, so that they could continue to improve their usage, especially the grasp of the fire, they could not be negligent, let alone perfunctory, refine a few more furnaces, see which furnace was better, and write down some experiences.

In addition, the carpenters and stonemasons continued to build blast furnaces and blowers, and Hao Fenglou planned to build ten for the time being, and the rest would be discussed in the future.

He knows that although there has been great progress in making iron into steel, it is still early and he still needs to keep improving to see if there is anything that can be improved.

This 'young master' didn't have much of a fight, so he ran to the blast furnace every once in a while, watched the blacksmiths make iron, and occasionally participated in their discussions, and after a few days, the steel was indeed much better than at the beginning, and some old craftsmen began to teach and exchange the experience of forging, and everyone's level grew rapidly.

The days seemed to pass like this, and Hao Fenglou certainly didn't expect that a holy decree from His Majesty would cause an uproar.

Zhu Di is an honest person, when Hao Fenglou set off, his holy decree was handed out, and the ministers of the court were dumbfounded for a while, but fortunately, it is now the Yongle period, not Zhengde, if it is Zhengde, the emperor dares to be so 'ridiculous', most of them are to point their noses and scold, and during the Yongle period, the spirit of martial arts is still there, and most of those nobles are also quite interested in it, and they all began to talk about it.

This time the sword test was not only allowed to participate in the envoys of various states, but also to the vassal kings. It just so happens that there are a lot of vassal kings who have come to Beijing recently, and everyone is interested in seeing His Majesty, so they naturally can't help but join in the fun.

There is more news that His Royal Highness the King of Han is gearing up, as for the prince, it seems that he has been looking for famous craftsmen recently, this Royal Highness the prince has always been criticized for being too weak, and he wants to change his image, maybe he wants to compete with the King of Han.

However, the reaction of the Japanese people was mediocre, and the Japanese envoy Ashikaga Yoshinori scoffed at this.

This benevolent brother is from a prominent family of the Japanese country, and his status is extremely high, and this time he went to sea, on the one hand, he hoped to communicate with each other, and on the other hand, he was counting on the new monarch of the Ming Dynasty to ascend the throne, pointing to the new monarch to give some rewards, but Zhu Di was so stingy that he was angry. In addition to being angry, he simply relied here, on the one hand, revising the national letter, insinuating that the Ming Dynasty was slow to treat the Japanese envoys, and on the other hand, spreading rumors and causing trouble.

As a result, something really happened.

A few of the envoys were buying pears on the street, but because they felt that the price was too high, they had a quarrel, so one of the envoys directly drew a knife and cut off the head of the pear seller.

All of a sudden, the city of Nanjing exploded. Ying Tianfu didn't know what to do for a while, so he hurriedly read the book, and the book naturally lay on Zhu Di's desk.

……………………………………

Okay, it's another new round of stories, so the tiger has been sleepless all night, and he just asked his wife to revise it before it was updated, I hope everyone can look forward to it! (To be continued)