In order to create a hardcore mobile game, Gao Li really checked the information about this part of the metallurgical process, and once had a general understanding of ancient metallurgical technology. I've heard that some traversers have to fold and forge against pig iron to make swords, but it's not impossible. Generally speaking, pig iron decarburization can be done by forging, one forging and one weighing, until the catty is no longer reduced, to create '100 steel'. This kind of gameplay is theoretically feasible, but it is too time-consuming and labor-intensive, according to Gao Li's guess, the gameplay of Sword Casting Villa should be the so-called 'Hundred Steel'. Because of the huge amount of man-hours, the output is extremely low and the price is abnormally high. On top of that, pure forging does not result in a complete quality standard.

Gao Li didn't plan to take this simplest, but most time-wasting method from the beginning.

In today's world, iron smelting and steelmaking basically smelt iron ore into mature iron, and then add various elements to achieve a stable metal material. And in order to obtain wrought iron, it must be decarbonized. There are many ways to decarbonize, and Gao Li saw that the workshop was quite complete, and he decided to use the method of frying steel, which seems more feasible at the moment.

This process is simple to say, but how to do it, Gao Li has only seen it from some video materials.

Two strong bull demons pulled the huge bellows, and the air was blown into the furnace, and the charcoal in the furnace emitted a bright flame, heating the crucible and the uncast molten iron. The calorific value of charcoal is not high, fortunately, the furnace type is not bad, but the limit of processing is this kind of pig iron, once the carbon content is reduced, it becomes mature iron, and the melting point is increased, and the charcoal is helpless.

Gao Li knows that there are some small-scale coal mining in the world, but it is basically mainly used by wealthy families for heating, but coke has not been used in metal smelting, and maybe it can be used in the future.

Gao Li took it to heart.

Iron Hoof personally went into battle and stirred the molten iron. The second bellows is used to blow air into the crucible to accelerate the mixing of molten iron and oxygen, so that all the silicon-manganese-carbon in the iron is oxidized into iron slag.

The bull demons who didn't have any urgency in their hands all came over, and the bet between Gao Li and Iron Hoof had already spread, and they all wanted to know what this guy who claimed to be the 'Hunting Warhammer Ouyezi' was capable of.

Most bull demons are actually waiting to see Gao Li's jokes, after all, Gao Li's reputation as 'Sealing the Vein Hunting Yan Xiaolangjun' is much louder than his reputation of 'Hunting Yan Warhammer Ouyezi', what can he do with such a lewd thief?

Ironhoof thought the same thing at first, but gradually, as he saw the iron slag precipitate, he seemed to understand something. The indifferent smile on his face disappeared and he began to work in earnest. Not only the iron hooves, these bull demons are all blacksmiths, so they naturally know that changes are taking place in the crucible. Especially when he saw the cautious face of the iron hoof, he no longer giggled, but watched it seriously.

However, the calorific value of charcoal is still too low after all, and as the carbon element decreases, the melting point of iron increases, and the molten iron gradually thickens. Gao Li frowned, and said in a low voice: "No, the temperature is not enough." ”

Hearing Gao Li say this, Iron Hoof smiled and said, "The temperature is not enough, boys, show the executives what you are capable of?"

A few bull demons laughed, and suddenly burst out of true qi, accompanied by the blast wind into the furnace, and the charcoal flame was dazzling!

Can you still play like this? Is this your true qi supercharging technique?

The molten iron gradually became pure, and Gao Li knew that it was time to bake, so he commanded, and Iron Hoof immediately picked out a spoonful of molten iron and cast it into an iron ingot.

"This is the so-called wrought iron. Gao Li said.

At this time, it was getting late, and the bull demons who had gone out to work had already returned. When they heard that the new executives were making a bet with Ironhoof to forge swords, all the bull demons gathered. At first, they all felt that this was simply bullying, they bull demons didn't say anything else, playing with the fire was also considered pure green, forging swords?

However, when they saw Iron Hoof's serious expression under Gao Li's orders, they knew that things here didn't seem to be so simple.

Iron Hoof looked at the iron ingot in front of him and smashed it with his hammer. He really didn't expect that the originally extremely hard iron ingot could become so flexible! It turned out that this was the secret of those so-called sword-forging masters!

Gao Li looked at the expressions of the bull demons around him, and he knew that he didn't need to explain in detail, these blacksmiths themselves already understood the meaning behind this iron ingot.

However, this is not the end.

"Come and help me get a sword. "Gao Li Dao.

He knew that this was not enough, he had to show his hand.

"Oh, good. Ironhoof nodded instinctively, he didn't dare to underestimate this 'Oyezi' now.

Gao Li intends to build a sword, a handsome sword.

As a modern game producer, he has been provided with countless sword samples by top art designers. There are a few masters in science and engineering in the production team, who took these structures for finite element analysis, and really found a few good weapons with gorgeous structural science. In addition to some complex goods that require metal 3D printing to make, Gao Li chose a long sword called 'Broken Moon'.

For these powerful bull demons, it is not difficult to fight a sword, but the difficulty lies in the shape. After all, technology belongs to technology, and art belongs to art. Fortunately, Gao Li, as a programmer who played indie games back then, had a good level of drawing, he drew the structure, and then the craftsmen made the shape and carved the texture on it.

Gao Li took it in his hand and felt it, and his center of gravity was perfect.

At this point, it is not yet a perfect weapon, because wrought iron is too soft to achieve a satisfactory hardness after processing. This sword must be carburized.

There are many carburizing options available to Gao Li, but one is the simplest and most practical.

Steel-filled method.

It was mentioned in the chapter "Hammer Forging" that "wrought iron is forged, and pig iron is melted and poured out". It is to use the carbon in the pig iron to carburize the wrought iron, so that the edge of the sword is changed from iron to steel.

There are several crucibles here, the furnace is constantly burning, and there is no shortage of molten iron.

The blade of the sword is immersed in molten pig iron, and under high temperatures, the carbon in the pig iron quickly penetrates into the wrought iron, and the wrought iron obtains carbon to become steel. Pig iron strips some of its carbon and becomes steel.

It's that simple.

Then it's quenching, shaping, grinding, and cutting.

Eventually, by the time the sword appeared in its entirety, it was already three days later.

Gao Li really didn't expect this matter to be tossed for so long, the fire scorched his eyebrows and skin, burned his clothes, roasted his face hot, and the smoke made his nostrils black. He even began to fantasize about how nice it would be if this was a high-energy world, with magic or something, just use his brain.

Gao Li failed to harvest high-energy magic, but he did gain the unanimous respect of the bull demons, especially after Gao Li cut off a row of white-mouthed iron swords with a single sword.

Swords and nails used to be a trick used by modern swordsmiths to deceive rookies, but in this society, it has a new term.

Sharpen iron like clay.