Liu Juntao is not perfunctory Zhang Baigui, the reason why this fan is relatively fast, the principle is like a bicycle chain, those who know it think it is very simple, but those who don't know have to understand a lot of things to understand.

Zhang Baigui sighed a little disappointed when he heard this, but his face was natural and he was not angry.

After all, in this era, craftsmen and masters from all walks of life have guarded their own unique skills, which is a means of personal eating and family heirlooms. Since Liu Juntao didn't want to say it, Zhang Baigui naturally couldn't ask.

The pulley set that Liu Juntao handed over to everyone before has benefited everyone a lot, how can Liu Juntao give his secret to everyone for free at this time? This is a little too unconscionable.

"Master Zhang, when I am free for a while, I will take time to give lectures and give you some things I know, and if you want to learn, you have to come to listen to the lectures. Remember to bring anyone in the military bureau who wants to learn, craftsmen and apprentices. ”

Liu Juntao's words made Zhang Baigui's eyes wider, his mouth seemed to be stuffed with an egg, and he even thought for a moment that Liu Juntao was having a bad brain!

Zhang Baigui opened his mouth, and it took a long time to come back to his senses, nodding his head, why don't you learn? Liu Juntao's skills are all heirlooms!

Tan Qing, the charcoal head next to him, listened to Liu Juntao's words, and was very excited in his heart, and muttered: "Mr. Lian is really not an ordinary person!" ”

Zhang Baigui glared at Tan Qing and said, "Do you still need to say this?" ”

At this time, the new iron furnace has been built, the charcoal and iron materials have been prepared, and all that remains is to accept the results.

Although Liu Juntao's expression is still full of confidence, he is also apprehensive in his heart, after all, he has only seen how to make steel in books, but he has not practiced it.

"There is a big lump of extra in this stove, maybe the cost of charcoal will be more......"

A blacksmith muttered quietly, and then was slapped by Zhang Baigui next to him, and the blacksmith quickly shrunk his neck and stopped talking, but there was still some hesitation in his eyes.

It's just that the blacksmith's words also attracted Zhang Baigui's attention, after all, if the steel is really smelted, the cost must be much more than when smelting pig iron before. And when the time comes, Liu Juntao will definitely start steelmaking on a large scale, and the cost of this military battle will increase dramatically!

"When the time comes, the cost of the war bureau is so big, can that kid Tang Yu still be able to support it? Let's not let the war bureau drag you poor! ”

Just when Zhang Baigui was muttering secretly, Liu Juntao saw that everything was ready, so he yelled: "Fire!" ”

Because the furnace temperature of this new iron furnace will definitely rise, Liu Juntao specially instructed the blacksmith to put 20% less charcoal into the furnace than usual.

This is also a conservative strategy adopted by Liu Juntao, if the charcoal is not reduced, this new iron furnace is likely to be burned down; And if the charcoal is reduced a lot, the temperature in the furnace will not be enough, and the steel will not be able to be trained at that time, and the iron of the furnace will be wasted.

Liu Juntao, Zhang Baigui and other blacksmiths held their breath and quietly listened to the crackling of charcoal in the furnace.

But after all, Zhang Baigui and the others have refined thousands of furnaces of iron, and at this time, even if they can't see the situation in the furnace like before, everyone can grasp the time of refining, so Zhang Baigui is not too worried.

Like this kind of earth blast furnace ironmaking, the time taken by a furnace is generally about an hour, so everyone gradually dispersed, leaving Zhang Baigui with a group of people to continue staring, and Liu Juntao squatting on the top of the pit.

Looking at the furnace workers turning the fan "hey, hey, hey", Liu Juntao also instructed the furnace workers from time to time to open the opening in the regenerator and put in fresh air.

"Ouch!"

Not long after, one of the furnace workers who was looking after the regenerator was injured, it turned out that the temperature of the regenerator was too high, and the furnace worker accidentally rubbed on it, and as a result, he was burned.

When he was injured, Liu Juntao was relieved, at least the heat storage of this new iron furnace was no problem.

The timekeeping tool used by the War Bureau is Pan Xiang, which is an hour's incense made by a specially found incense maker.

At this time, seeing that Panxiang still had a quarter of the appearance, Liu Juntao was already squatting on the top of the pit and was bored, but he heard Zhang Baigui suddenly shout: "Open the furnace!" Open the furnace! Open the furnace quickly! ”

Tan Qing, the charcoal head next to him, glanced at Pan Xiang and said strangely: "Master Zhang, it's still a long time." ”

The craftsmen around me were also amazed.

"Don't talk nonsense! If you don't turn on the furnace, this furnace will collapse! ”

Zhang Baigui yelled in a hurry as he pulled the iron hook and hooked the brick mouth blocked under the stove.

Seeing this, Liu Juntao was also shocked, and hurriedly signaled the craftsman who shook the fan to stop, looking at this situation, is the furnace unable to stand the high temperature?

As soon as the coolness in Liu Juntao's heart rose, he saw a stream of blazing slimy liquid flowing out from under the stove, along the sloping brick road, into the shallow flat pit. There are still a few lines in the pit, this is the iron plate, a version is about 200 catties.

"How can it be so fast! Is there a problem with incense? ”

The furnace workers were shocked, they had never seen it come out so quickly.

"Panxiang is fine, yes...... The charcoal fire is strong, and it naturally melts quickly. ”

Zhang Baigui gasped for breath with palpitations, and looked at Liu Juntao, who was also panting, both of them were excited in their hearts, and they succeeded!

When the molten steel ran out and the slag was dug out from the slag outlet, several furnace workers shouted again, and it turned out that there was still a lot of charcoal that had not been burned.

"It's ...... That's more than 30 percent! ”

Zhang Baigui's eyes were a little wet, and the other furnace workers and blacksmiths were also stunned.

"At this rate, we can refine one more furnace a day!"

Tan Qing, the charcoal head, first thought of this problem, now the military war bureau has enough iron, but there is only one furnace, so now the war bureau can only produce a maximum of six furnaces of iron every day. Now that the time for each furnace has been shortened by nearly a quarter, it is natural that there will be one more furnace of iron.

Moreover, what everyone is refining now is stainless steel, not pig iron! There's a world of difference!

"Not good! The furnace burned one layer down, and then it couldn't be refined. ”

A furnace worker exclaimed.

"Collapsed? It's nothing if it collapses! Let's build a new iron-smelting furnace! ”

Zhang Baigui laughed, of course this is a joke, but it really takes some time to reinforce this new iron furnace, and it has to be thickened. However, the delay is not worth mentioning at all compared to this furnace of steel.

At this time, the furnace workers and craftsmen of the War Bureau also laughed, and in the laughter, everyone's eyes looking at Liu Juntao also changed, and the previous doubts disappeared, replaced by a red heat like a furnace.

Liu Juntao casually built a small brick house for them, and with some gadgets, he refined a lot of stainless steel that blacksmiths and furnace workers could not practice in a lifetime, which was enough for everyone in the War Bureau to worship Liu Juntao.

However, Liu Juntao was also a little embarrassed, he didn't expect that with the iron-smelting furnace and the regenerator, even the smelting time would be saved.

Then, the blacksmiths and furnace workers of the War Bureau naturally grabbed Liu Juntao again, and kept asking him why this small brick house could have such a miraculous effect, and Liu Juntao could only perfunctory them as he had answered Zhang Baigui before, and at the same time invited them to participate in the "lecture" in the future.

After listening to Liu Juntao's words, everyone was excited, but Zhang Baigui held his throat and coldly reminded everyone to keep secrets.

There is no need for Zhang Baigui to remind this point, everyone also knows that technology is the cost of everyone's food these days, and many of the people are also Zhang Baigui's disciples, and they all nodded awe-inspiring at the moment.

After that, the furnace workers were excited, and they talked loudly, and then devoted themselves to the maintenance and reinforcement of the new iron furnace.

And Liu Juntao breathed a sigh of relief and said to Zhang Baigui: "Master Zhang, now that we have steel, the imitation of this fire gun will start as soon as possible!" ”

Zhang Baigui nodded heavily and said, "I'll gather people immediately!" ”