Cao Chong was not particularly satisfied with the quality of the heavy armor, but Cao Chong did not accuse Guo Xiao of it.

To be honest, Guo Xiao has done his best.

This can be seen from his haggard appearance with all his strength.

But Cao Chong could not blame Cao Chong, but he had to put this matter aside.

Heavy armor cannot be used like this or not.

Cao Chong asked the two strong soldiers in front of him to put the heavy armor back, turned to Guo Xiao and said, "Let's go and see the iron smelting workshop."

Cao Chong has no research on iron smelting, but he has also read documentaries about iron smelting. He still knows some of the most basic iron smelting techniques in later generations. Perhaps, he can improve the current iron smelting techniques.

During this period, it was estimated that the iron was still pig iron, not as hard as iron. As for steel, although it existed, the yield was definitely not high.

If Cao Chong could produce steel production.

Then, this is a bit scary.

If there is a thirty kilogram of heavy armor, the defense of the pig iron heavy armor of thirty kilograms and fifty kilograms is several times better than the previous thirty kilograms and fifty kilograms.

Moreover, can the opponent's pig iron armor defend against the sword made of steel?

Not possible at all!

What Cao Chong wants is equipment crushing.

But Cao Chong thought about it and was still a little uncertain. He didn't know whether the little knowledge about iron and steelmaking in his mind could inspire the blacksmiths here.

You know, although Cao Chong watched documentaries in later generations, he only had some shallow impressions over time, not to mention that Cao Chong was completely bored when he watched this thing, and how much he could remember was an unknown number.

but...

I can only take one step at a time.

When I entered the iron smelting factory, the sound of iron smelting in my ears gradually became louder, and the temperature around me increased little by little, as if it had driven away the chill of early spring.

Entering the iron smelting workshop, in this factory, let’s talk about it as a factory.

In this factory, pig iron is forged.

That is to melt iron ore into pig iron.

Looking at the two three-person-high iron smelting furnaces in the factory, Cao Chong looked thoughtful.

In the documentary in his mind, iron smelting in later generations usually used blast furnace iron smelting.

However, the devices inside the blast furnace are very complicated, and it is unrealistic to create the blast furnace of later generations in this era.

But Cao Chong knew the principle of blast furnace iron smelting.

fe2o33co==2fe3co2(high temperature)

fe3o42co==3fe2co2(high temperature)

co2==co2(lit)

cco2==2co(high temperature)

These four formulas are the principle of blast furnace iron smelting. In order to smelify, in addition to high temperature, the contact area must also be increased to allow iron ore to react better with co.

This is why the blast furnace increases the height of the blast furnace within a certain range can increase the efficiency of iron smelting.

So...

Can I ask the blacksmiths to build the blast furnace a little higher?

Cao Chong thought everything in his heart, but he didn't stay in this factory for long.

Cao Chong continued to walk forward. After the forged pig iron was cooled and shaped, it would be handed over to the next factory. In this factory, a blacksmith and an apprentice were operating hundreds of people, and there were dozens of forging tables.

Most of the sound of ding-kanging sounds were heard in this factory.

Heating forging is a step to make pig iron more resilient.

Cao Chong didn't stay here for long, and continued to walk to the next factory.

This factory is forged and tough molds and decorated with some decorations, and then connected them, and then added pieces of steel connected together outside the armor to make a chain mail.

The heavy armor was covered with a layer of steel armor.

Steel appeared in this era, even earlier in the Qin Dynasty.

However, the reason why heavy armor is not made entirely of steel is entirely because it is difficult to make steel. It would be fine if one or two sets of armor made of steel, dozens of kilograms of heavy armor and five hundred sets. If each set is made of steel, it would be impossible.

In this era, the main steel making processes are block iron carburizing method and steel frying method.

The raw material for stir-frying steel is pig iron. The key point is to heat the pig iron to liquid or semi-liquid, and use blowing or sprinkling concentrate powder to oxidize silicon, manganese, and carbon, and reduce the carbon content to the composition range of steel and iron.

Not only is it troublesome to operate, but it also has many steps, the raw materials are expensive, the production time period is even longer, and the output is not high.

This is also the reason why heavy armor cannot be completely cast with steel.

But Cao Chong knew another technique.

There is the steel filling method that will be invented a hundred years later and the crucible steelmaking method that will only appear in the 17th century.

The steel filling method uses relatively high-quality iron ore to smel out high-quality pig iron. Then, liquid pig iron is poured on the cooked iron, and after several degrees of smelting, the iron carburized into steel. Since the pig iron and the cooked iron are "suspended" together, the steel refined is "suspended".

The steel filling method shortens the smelting time, improves productivity, increases the yield of steel, purifies the metal structure, and improves the metal quality.

In addition, the steel filling method is easy to operate and easy to master.

If you want to obtain steel with different carbon content, you can get it by combining pig iron and waxed iron in a certain proportion and smelting it.

If they could use the steel filling method to let them know, maybe all the heavy armor could be cast from steel.

As for the crucible steelmaking method, it is a method of melting metal materials into molten steel in a graphite clay crucible.

But it is easier said than done, and more importantly, Cao Chong doesn't know much about these things.

You have to do something with the graphite clay crucible, they don't understand, but if you say that cast iron is poured on the cooked iron, after several smelting, these blacksmiths must know what to do.

Since this matter has been decided, Cao Chong said to Guo Xiao: "Are there any of these blacksmiths who are skilled or respected?"

In fact, Cao Chong is almost talking about the same meaning. Basically, those who are highly respected are all skilled.

If you don’t have superb skills, who will respect you?

Especially in the blacksmith's vocation.

After knowing that Cao Chong was going to meet someone, Guo Xiaomashan asked someone to find an old man over fifty years old.

The old man has silver-white hair, but his body is very strong, and he is not old, and his muscles are lying on the dragon.

He walked very steadily, with coarse cloth clothes. When he saw Cao Chong, he knelt down and saluted.

"The grass-roots have met noble people."

Before the old man could kneel down, he was helped up by Cao Chong.

"What do you call the old man?"

The old man was helped up by this young nobleman, and his face was a little rosy.

"Caominjian's surname is Zhao, you can call me Old Man Zhao."

Cao Chong smiled and said, "Old Zhao, are you the one with the best iron craftsmanship here?"

Although Old Man Zhao and Old Man Zhao were only one word different, the difference was that it was thousands of miles apart. Old Man Zhao smiled and looked at Cao Chong with his eyes, and he became even more happy and respectful.

Respect is mutual, even if your status is much higher than that of him.

"It can't be said that the skills are the best, just a few more unique skills."

This old man is quite good at speaking. It seems that there is a reason why he can become a respected member of the blacksmith.

"Then do you know how to fry steel?"

If you don’t even know how to stir-fry steel, Cao Chong felt that it would be useless to hand over the steelmaking force to him.

When Old Man Zhao heard the three words "Steaming Steel Frying", he looked at Cao Chong with surprise and said excitedly: "The noble man also knows the method of "Steaming Steel Frying Steel Frying?"

Cao Chong nodded gently.

"Old Zhao hasn't answered this marquis' question yet."

Old man Zhao hurriedly said to Cao Chong: "The steelmaking method is not a rare technology. It is not only a young man, but many craftsmen can do it."

Cao Chong nodded and said to Old Man Zhao with a smile: "I have a new method of steelmaking, which is several times better than steelmaking. Do you want to give it a try?"

Is it better to make steelmaking than steel frying?

If someone else says this, he will definitely mock him.

But the one in front of him is not someone else.

This is a noble person!

So he chose to believe it.

However, Old Man Zhao's eyes were a little strange at this time.

Noble man...

Isn't it a pampering person?

Why do you still know how to make steel? This is a cheap job.

It's really strange...
Chapter completed!