Here, there are also several people working, because of the existence of gunpowder, road construction does not need too much labor, manual excavation.

Therefore, the personnel are also relatively scattered, and several construction sites are opened up at the same time. For example, this is the place where the furnace is built.

Furnace is the place of ironmaking, because ironmaking needs a high temperature, as long as the furnace is built underground, the heat can not be dispersed.

Wang Kang went directly to a work shed, which is the temporary headquarters of construction. At the moment, there are many people around and a few strange faces.

Seeing that Wang Kang was approaching, Nie Zhongxing met him and said, "Master Kang, the craftsman has come. It was brought by deacon Xu of your family."

"Xu Changlin? He's here, too! " Wang Kang said with a smile.

"It's just that the craftsmen gave their opinions on the stove we built," Nie Zhongxing added.

"Oh? What's the matter? "

"You'd better go and see for yourself."

Wang Kang went with Nie Zhongxing, and several people surrounded him. Xu Changlin said, "the craftsman the count is looking for has arrived. Three of them are still from the metallurgy bureau. I'll introduce them to you."

"This is Li Zheng."

Xu Changlin pointed to a slightly thin middle-aged man and said, "Master Li is the iron smelting master of the metallurgy and manufacturing Bureau. Master Li is in charge of the construction of the furnace in the metallurgy and manufacturing Bureau."

"Master Li is here. I'm sorry for the loss," Wang said.

No matter who orders you to come from Kyoto, you should be treated with courtesy.

But master Li just nodded and did not respond.

Seeing that the scene was slightly embarrassed, Xu Changlin pointed to another person and said, "this is master Xi, also a famous cast iron craftsman, who has improved the purity of iron embryo..."

"His name is Wang Fuchen, and he is also a master blacksmith."

Xu Changlin pointed to other people around him and said, "they are all craftsmen who come with them. They are all good hands of the metallurgy bureau."

Seeing such a lineup, Wang Kang knew that his father must have paid for it. He didn't know how to invite so many people.

This is also the division of labor between father and son. Wang Dingchang provides resources in the front while he does construction in the rear.

After looking at them one by one, Wang Kang said with a smile, "thank you for coming here to help. It's just like a tiger adding wings!"

However, he didn't get a good response. Li Zheng's thin middle-aged man picked up some drawings and asked coldly, "it's said that you painted this paper?"

"Yes, what's the matter?"

Wang Kang asked suspiciously. He was also a little confused. How could these people treat him like this.

"Draw blindly!"

"It's ridiculous."

"a rich young master is still correcting."

Several people agreed with each other, which made Wang Kang's face sink

When I met him for the first time, I criticized him indiscriminately. Even if you are from the metallurgy bureau, you can't do that!

Seeing this scene, the people around him are all face to face. Nie Zhongxing is not good at face to face, and he is convinced of Wang Kang in every way.

These people are obviously here to find fault.

Seeing Wang kangyin's anger, Xu Changlin said in a low voice: "Young Master Kang, these are all the earls. They have to work hard to invite them here. If you have something to bear, how can you bear..."

"Forbearance?"

Wang Kang sneered. Before he saw his true ability, he criticized it. He asked faintly, "I don't know how many of you can say that?"

Li Zheng unfolded the drawing, pointed to it and said: "the furnace is used for smelting iron. We should be very careful in construction. We can't do one point difference."

"What are you going to do with the drawing you drew, which shows that the molten iron from the furnace is connected to another furnace?"

Li Zheng said in a cold voice: "it's a taboo to connect the two stoves. The temperature of the stoves is very high, and the furnace wall often explodes because it can't bear the high temperature!"

"Two stoves are close, which is extremely dangerous in itself..."

"As you noted in the drawing, the molten iron from the first furnace flows to the second furnace to melt again. This is unnecessary."

"And this..." The craftsman named Wang Fuchen also said, "you can separate out many outlets for the molten iron from the second furnace..."

"It's totally random construction!"

After listening patiently, Wang Kang understood that it was only when they saw their own drawings that they said so.

He shook his head, his plan is not only iron, but steel.

The molten iron produced in the first furnace is heated and melted in the second furnace, then the steel can be drawn, and then it flows into the pre arranged mould.

After cooling, it becomes steel directly.

They certainly can't understand this.

Wang Kang thought for a moment and said, "I'll explain the first problem to you. As we all know, smelting iron requires extremely high temperature, and the ordinary construction of the furnace is made of brick."

"But because of the high temperature in the furnace, the bricks can't bear it for a long time, so there will be cracks in the bricks or even furnace explosion. This is also your concern."After listening to these words, several people nodded. When they looked at Wang Kang, their eyes were different, because these words were very professional.

Can a rich young master understand this?

Wang Kang ignored it, and then said, "the essential reason is that the fire resistance of bricks is not enough, and I have found a better refractory brick!"

"No way!" Li Zheng said directly.

Master Xi also shook his head and said, "refractory bricks have been studied by our Metallurgical Bureau, and we have tried many kinds of refractory bricks, so it is impossible to have better refractory bricks."

"Just because you don't know doesn't mean there isn't any!" Wang Kang said directly.

"Crazy mouth child, my metallurgy bureau is engaged in this matter, don't we know?"

But Wang Kang didn't speak. He said to Nie Zhongxing, "take one of the bricks I asked you to make."

After a while, Nie Zhongxing took a square red brick. Wang Kang pointed to it and said, "this is the firebrick I made."

"Ha ha!"

"That's it?"

"What's the difference between this and ordinary brick? Are you kidding?" Several people are laughing.

But Wang Kang said coldly, "you can be ignorant, but you can't be fearless!"

"This brick is made of high bauxite, clay and pulp. What is high bauxite? I don't think you know

Wang Kang then said, "let me popularize it to you. Bauxite is the abbreviation of high aluminum material. Its essence is also a kind of ore, a kind of sedimentary deposit."

"This kind of ore is found in Xinfeng County, and its clinker can be used to make high alumina brick, that is, refractory brick!"

Wang Kang's words were heard by Li Zheng for the first time.

Wang Kang didn't explain much. When he was preparing to smelt iron, he had thought about all the possible problems.

For example, the brick needed to build the furnace is a problem. The conventional brick obviously can't bear the high temperature, so he fired the refractory brick.

"It's just a word you said," Li Zheng snorted coldly. He didn't look good either, because he didn't understand what Wang kanggang said.

"In a word, it will be known after trial," Wang Kang said.

"This problem has been exposed for the time being," then master Xi said again, "then I ask you, why does molten iron melt into the furnace again?"

Wang Kang said directly: "because I want to make something harder than iron Steel