Han Fei's virgin land...

"Childe is saying that this kind of thing can replace the blast tube?!" Chen Kai asked

Han Fei nodded, he also knew this pneumatic tube, it was a copper pipe about several feet long, when the fire in the iron furnace was burning, it was to stretch this copper pipe into the furnace, and the person blew at the other end, so as to increase the temperature in the furnace.

However, this method is stupid and bad, and its disadvantage is that the wind power of the blast pipe is small and uneven, and it is not very beneficial to iron forging, and the other is that this thing is really not very safe, once you gasp, the hot temperature in the furnace can easily break a person's throat.

Therefore, even the master craftsman Chen Kai rarely uses this thing.

Seeing that Gongzi took out the drawing of this [bellows], Chen Kai was also quite curious, and immediately asked people to build one according to the words of the sixth son.

This was followed by a hole in the existing furnace and a pipe for the bellows.

"Add to the fire!" Chen Kai instructed the craftsman to add fire to the furnace.

After a while, the fire burned the walls of the furnace red.

Chen Kai took a palm-sized piece of iron in his hand, which was a leftover material forged on weekdays, and instructed the craftsman behind the furnace to use the bellows to blow the air.

It was at the moment when the bellows sounded that Chen Kai saw the flames in the furnace quickly soaring, and a scorching temperature rushed to his face.

"Does it really work?!" Chen Kai put down the hand that covered his face because of the fire wave, and threw the slap iron ore in his hand into it.

Chen Kai breathed, and it could be found that this was the experience of being an old craftsman, Chen Kai's breathing was extremely even, and it seemed that each breath took the same time.

One, three, three...... Seven breaths!

In just seven breaths, Chen Kai saw that the outside of the iron block was slowly turning red, and in normal times, when it reached such a hot temperature, it would have to reach at least twenty breaths!

Eight, nine, ten...... Twenty-six breaths!

At the twenty-sixth breath, Chen Kai stretched out the iron tongs in his hand, grabbed the burned red iron and took it out.

The reddish iron that was burned in this way was already the first time that it could be forged.

And in normal times, it would take at least nearly 100 breaths to get to this point!

There is no doubt that the [bellows] that Childe took out is really useful.

Throwing the red iron block caught by the pliers in his hand into the ash pool, Chen Kai asked in a deep voice, "Where is the son?!" ”

A craftsman replied, "At the bronze smith's shop." ”

Chen Kai nodded, recently, he had discovered that this Ninth Prince seemed to have a special study of the art of casting.

At that moment, Chen Kai groaned and walked towards the bronze smith's shop.

The bronze smith shop is in charge of a bronze craftsman named Wang Yan, and when Han Fei came here, he naturally didn't come here in a panic.

Rather, it came for a particularly important thing.

Wang Yan asked: "What does Childe mean by using the template to cast small round copper plates?" ”

"Well, is it difficult?!" Han Fei asked.

Wang Yan thought for a while and replied: "It's not difficult to cast a small round copper plate, but according to what Gongzi said, the front and back are engraved on the front and back, and the inlays are clear, this is not easy." ”

"Can it be done?!" Han Fei asked.

Wang Yan thought for a long time and said, "Childe, I can give it a try, but I'm not sure..."

"Chen Kai has seen Childe."

"Hmm......" Han Fei nodded, and then asked, "The bellows experiment is over?!" ”

"Well," Chen Kai nodded, and then said: "As Childe said, after using the bellows, the furnace temperature has been greatly increased!" ”

"Hmm......" Han Fei nodded, he had already expected this result.

"Childe doesn't seem to care?" Chen Kai also asked rhetorically.

"It's just that the furnace temperature has been raised to make the iron burn red faster, what's there to care about......" Han Fei replied as well.

When Chen Kai heard this, he also sneered in his heart, insiders and outsiders saw it differently, but the sixth son of the emperor was the son of Emperor Wu, and it was normal for him not to know about wrought iron.

At that moment, Chen Kai couldn't help but say excitedly: "Childe, not only to make the iron burn red faster, Childe, the increase in furnace temperature is of great benefit to wrought iron!" ”

"Oh?" Han Fei looked back at Chen Kai and said, "You said yes." ”

"Wrought iron by furnace fire, two by forging, three by quenching, among them, furnace fire is the first step, but also the most important step, South Korea's best wrought iron technology is seven wrought iron, and the common one in the son is five wrought iron, as for the rest of the other countries wrought iron technology is developed, can reach more than ten wrought iron, legend has it that the land of Wu Yue is even more harmful, has reached the realm of twenty wrought iron!"

"Wrought iron? What kind of doorway is this?! Han Fei asked, he didn't know much about wrought iron.

Chen Kai explained: "The step of each wrought iron is to first burn the iron red, repeatedly beat to a certain extent, and then quench, this step is called [a wrought iron], each time after the wrought iron, it is weighed, if the weight is reduced, it is considered a wrought iron success, counted as a wrought iron, if there is no reduction, it can not be regarded as a wrought iron success, five wrought iron is the successful wrought iron five times, and so on, seven wrought iron, ten wrought iron, and even twenty wrought iron are the same. ”

Chen Kai paused and continued: "Every time it is forged, there are fewer impurities in this iron, correspondingly, the weapon cast is harder and harder, and the most famous forged iron technology is the Qi country, once the border army captured the broadsword of the Qi people on the battlefield, and it has reached the realm of fifteen forgings, so the world often says, [The land breaks the cattle and horses, the water intercepts the birds and geese, and when the enemy is the enemy, the iron curtain is cut into the armor] refers to the broadsword of the Qi people's army! ”

"Hmm......" Han Fei asked, "If the furnace temperature increases, the number of forgings can be increased?!" ”

"Of course!" Chen Kai nodded heavily, and then explained: "In the past, the biggest restriction on the number of forges was the furnace temperature, and now that Gongzi has taken out a sharp weapon like the bellows, I think we can also reach more than ten forgings, or even twenty forgings, it seems that it is not impossible......"

"Then why is South Korea able to have fifteen forging skills?!" Han Fei also asked, it is true that South Korea does not have such a sharp weapon as bellows.

Chen Kai thought for a while and said: "The structure of the iron furnace in Qi seems to be different, it is very easy to gather temperature, and furthermore, the material of the primer of the Qi people is also different, and it is a thing called [Black Stone], as for what it is, the Korean people are very strict, and it has not been leaked, so it is unknown." ”

【Blackstone】

As soon as Han Fei heard this name, combined with its identity as a primer material, he knew what it was......

Coal!

It should be coal, and the temperature of coal burning is indeed higher than that of wood.

Thinking of this, Han Fei nodded, there must be coal mines in South Korea, but it is unrealistic to find them in a short time, so he just wrote down the matter, and then looked at Chen Kai and asked, "What about the land of Wu Yue, what about their twenty forgings?!" ”

Chen Kai specially explained: "Childe, I want to make a special note that although the Koreans have fifteen forging skills found on the battlefield now, it does not mean that the Koreans have only mastered fifteen forgings, and they may also have twenty forgings, but it is time-consuming and labor-intensive, and cannot be used in the army on a large scale." ”

"But the land of Wu Yue is to occupy the time and place, and there are many famous craftsmen, but it is able to make the twenty forging skills applied to the army on a large scale, among which the famous generals of the Wu State are all forging iron masters, they use the fire of heaven and earth to condense the iron embryo and forge it into a tool, and the peerless sword cast by it can be cut even if it is twenty forging."

"The fire of heaven and earth?!" Han Fei was surprised by this title.

"Well......" Chen Kai nodded, and said: "Wu Yue barren mountain, every time before the rainstorm, the thunder splits into the mountain, and a pond in the mountain to ignite the ground fire, which can last for decades, Wu Yue is a famous iron forging craftsman who uses this to forge iron, and the sword made is beyond the reach of even the iron forging skills of the Central Plains!" ”

"Thunder and fire?!"

These five words suddenly popped up in Han Fei's mind.

Han Fei knew that this might be the barren mountains of Wuyue Land with gas ports or oil and gas outlets, and thunder and lightning could be ignited when they were sent to the fire, and if there was no accident, this kind of gas port or oil and gas port could burn for decades without a problem.

It seems that this wrought iron bottom fire is best with gas and oil and gas, followed by coal, and firewood is the second.

Thinking of this, Han Fei felt that oil and coal and other things were too far away from now, thinking about it or giving up, the bonus of the bellows should be able to make up for the gap with Qi people's wrought iron skills, at most, starting from the fire-gathering structure of the furnace, it may not be impossible to catch up with the power.

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(End of chapter)