After all, steel has more advantages than iron. As a result, ancient craftsmen were always looking for ways to make iron into steel.

In the beginning, craftsmen needed to reduce iron ore with charcoal at a low temperature of 800 to 1,000 degrees Celsius to obtain a sponge-like lump of iron with more inclusions.

Because the carbon content of block iron is very low, it is quite soft and can only be forged, not cast, so it is not an ideal material for fabrication. Blacksmiths use a block of iron as a raw material, heat it repeatedly, fold and forge, extrude squeezing out sundries, and make it carburized and hardened in contact with charcoal fire, which becomes a block of carburized steel, which is the most primitive steel.

In the manufacturing process of this kind of steel, it needs to be repeatedly heated and forged, so it is also called "hundred steel".

However, this steel-making method requires a large amount of labor and low efficiency, so probably after the middle and late Western Han Dynasty of the Celestial Empire, blacksmiths invented the "frying steel" technology. When the pig iron is heated to 1,200 degrees Celsius, the ore powder is sprinkled and stirred constantly.

Reducing the carbon content of pig iron to make steel, which is a simple and fast process for making steel, this technology appeared in the Yun Dynasty only twenty or thirty years, and it is an absolute high-tech method.

If it weren't for Jia Yu's participation in the rebellion of King Liesu and some contact with this technology in order to create weapons and armor, I am afraid that William would not have been able to develop this method for many years.

Even if William has integrated many craftsmen to develop various technologies, although there are some gains, but technology needs to be accumulated and developed, and it is useless to have extremely superb basic technology concepts.

More than a month has passed, and Jia Yu is also guiding the craftsmen and orcs to complete the construction of the blast furnace.

Hundreds of blacksmiths even suspended the construction of armor and worked overtime all day to build a blast furnace from existing iron, after all, once it was built, better quality steel could be smelted, so William directly ordered them to participate in the construction of the blast furnace.

After more than a month, they finally built a huge blast furnace.

This blast furnace is about six meters high, although it is not as good as the perverted blast furnace of the Celestial Empire in William's previous life, but in the Holy Sect world, this is the first attempt.

William and his vassals in the castle came to visit, and they will witness the first furnace of steel smelted by frying.

And after the steel solidified, they would use these materials to build their first longsword, and weave a large scale armor on the ground for experimentation.

At this time, the blast furnace kept spewing hot gas, and the orc coolies kept agitating the blower and blowing it into the blast furnace.

There is a small opening at the top of the blast furnace, and someone sprinkles quicklime into it, and keeps stirring it, so that the iron liquid inside contains less and less impurities.

Finally, after the orcs and the people working on it were sweating profusely, the steel was finally smelted and flowed out of the holes.

Outside the holes, there are molds one after another, and the hot molten steel hits the air with a clattering sound and a slight splash.

After several molds were undertaken, the molten steel finally stopped flowing out, and it was roughly estimated that it was about 200 kilograms, which was not a high output, but compared to other places in this era, it was already good.

As long as William can continue to build blast furnaces in the future, then the production can be expanded, and the armor weapons made of steel made by the steel frying method will no longer be rare.

William looked at Jia Yu, who was neither humble nor arrogant, and said, "Good job, next I want to see the effect of the weapons and armor created!" ”

The blast furnace smelting had been going on since the previous evening, and William had come here in the morning and had not poured the molten steel out of it until noon.

At this time, it was already early afternoon, which meant that William had been waiting here for almost half a day.

Jia Yu said to the blacksmiths below, "Go and use this steel to make a long sword and a scale armor on the front and chest!" Be quick! ”

"Lord, I'm afraid you'll have to wait a little longer, they'll be done soon!"

William nodded, he was not short of time, not to mention that he was also very interested in the steel made by the frying method.

After all, in his previous life, he often mentioned the steel frying method, and he was like thunder about the name of this kind of steel, how could he be impatient?

The blacksmiths burned the solidified steel in a furnace and waited until the whole steel was red before they began to beat it with hammers.

As for the steel used to make the armor, it was divided into many small pieces and then hammered with an iron hammer.

With the rhythmic sound of beating, the steel was gradually completed under the hands of the blacksmiths, and the longsword gradually took on an outline.

The blacksmiths then began to mud the middle of the sword, leaving the blade to be exposed, and then walked over to the bucket containing a kind of animal urine, still glowing red.

One put the sword tire inside, and a loud sound sounded, and the extremely unpleasant smell of animal urine filled the air.

After the sword tire had cooled sufficiently, the blacksmiths took the sword out of it, washed it with clean water, and then began to sharpen it with a whetstone.

The courtiers next to William kept talking about the sword, some expressing distrust and others expressing great interest in this new method.

William's courtiers are Vidal, Tuss, Ariel, Baron Reims, and Kenos, which are relatively few, and there are some so-called court courtiers watching from the sidelines, and they have no talent that William can look up to, and they also make arguments.

However, Hu Limu is also more curious about this new smelting method, and he has always been more interested in Jia Yu.

Because he knew from his father and the extremely old people that the Kriza people appeared in the Holy Sect World purely because of the strength of the Great Cloud Dynasty.

And the person in front of him happened to be from the Yun Dynasty, so he was very curious, but he was curious, but he was curious, but there was no hostility.

For the sake of decades ago, when he didn't have the hatred of a brute, to target a person with real materials, he wouldn't do such a thing.

On the contrary, he was curious about the new way of smelting.

Jia Yu and Yamamura were both confident in their discussions about the courtiers, after all, they had seen weapons and armor made by frying steel after the Yun Dynasty, especially Yamamura, who trusted this steelmaking method very much.

After a period of hammering and grinding, and the hilt of the sword, the chest part of a scale armor was made, and then the experimental phase was completed.

Another longsword and scale armor made by the original smelting method have been placed, and the scale armor has also been tied to the tree.

"Who wants to experiment?"

William asked, and Urimu immediately raised his hands, walked out, and said, "I'll come!" ”

As he spoke, he picked up his original long sword and went to chop the scale armor made by frying steel.