"Pig iron, which is an iron-carbon alloy with a carbon content of more than 2%-4%, has poor ductility, and is used to forge iron swords that will make the sword brittle and easy to break. Many of the pig iron also contain mineral impurities, such as chromium, phosphorus, manganese, and silicon, which greatly weaken the expressiveness of the iron sword. Monk refiners often simply quench pig iron with Danhuo to produce carbon impurities and turn them into cast iron, and the remaining mineral impurities will also affect the quality of the magic weapon. ”

Ge Wei's true yuan light group condensed with both hands kept kneading this piece of pig iron ingot, thinking in his heart. However, in the cultivation realm, especially in the low-level cultivation realm, there is often not much understanding of natural science. Excluding the fact that they are cultivators, the scientific knowledge of these people is similar to that of the ancients.

To be honest, the smelting skills of cultivators are not superb. It can even be said to be very low-level. Not to mention that cultivators don't know what metal elements are, the periodic table, molecular arrangements, and so on.

If you don't understand this, the cultivator refines the weapon, and what he refines is only the "form". And Ge Wei is refining "inside".

This refining technique was learned from the Qingxu Zhenren, who was also a monk, but he was also a plane merchant. Qingxu Zhenren understands what chemistry is, so his refining technique is to focus on the chemical level, and then start from the cultivation level, and the ultimate goal is to completely remove the mineral impurities from the material from the molecular level.

Others could only see Ge Wei constantly kneading the dark iron with the true element, how did they know that Ge Wei was rearranging, separating, and purifying the various macromolecules in this piece of dark iron.

This process is more like a chemical process. Ge Wei is using the cultivation technique to realize the purification process of compounds to elementals. All that is used is the knowledge in the high school chemistry textbook. And it is precisely this knowledge that all the monks present will not understand in any way.

In the opinion of all the monks. What Ge Wei used was a refining technique that they had never heard of.

More people began to notice the movement on Ge Wei's side. They all watched curiously as Ge Wei kneading the Xuantie group.

Under Ge Wei's continuous kneading, the color of the dark iron became brighter and brighter. This indicates that the main impurity, carbon, is being rapidly separated. At the same time, there are calcium, phosphorus, chromium, manganese, silicon and other impurities. Ge Wei has been "seeing" these molecules with his divine sense from the beginning, his eyes are like a delicate microscope, and his true yuan kneading is like a sharp scalpel!

After continuous surgical separation, finally, this piece of dark iron was successfully purified by Ge Wei.

This purification is purification in the absolute sense, which means that at the chemical level, this piece of pig iron has become pure iron element.

And the color of this piece of dark iron. It has also changed from the original black to a shiny silver-white fixation.

This phenomenon had already caused the monks who were present to watch to exclaim. What kind of technique is this, the dark iron actually changed color, from the well-known iron black, to a beautiful silver white!

This phenomenon is unheard of!

Many monks who know how to refine weapons know that after the dark iron is tempered by Danhuo, it will indeed change color slightly, and it will change from iron to black. Get a little grayer. But this silvery-white color will never appear.

This color of dark iron was incomprehensible to the monks. It's even less clear how Ge Wei did it.

Many high-ranking monks who knew the goods were particularly surprised, and the few Jindan monks present were a few of them, and they clearly knew that there was a kind of dark iron that would take on this bright white color. This dark iron is very precious. It's called Hundred Refining Iron. As the name suggests, this precious dark iron is formed after thousands of tempering. The material is excellent. It is especially suitable for refining high-end magic weapons, and the price is quite expensive!

They couldn't figure it out. This kid is obviously holding a very ordinary piece of crude dark iron in his hand, how can he become a hundred refining dark iron in just a few breaths?

Someone who knows a little bit about chemistry. not to be surprised by this change. Because iron is elemental, it is originally silvery white.

The reason why ordinary dark iron is black-gray is because it contains a certain amount of carbon, and the carbon element is ink-colored, and it will appear black-gray when combined in iron ore.

When Ge Wei uses chemical techniques to purify this piece of dark iron, remove impurities, and turn it into pure iron element, the color of the iron will naturally become brighter and brighter, and finally turn silvery-white.

Ge Wei was right, this is a bun of dirt buns. How do you know the trick here, it is thought that Ge Wei used some kind of secret method, which can make Xuantie tempered thousands of times.

Many monks have already revealed their essence, and this method is a bit ...... It's fascinating. Many people set their eyes on Ge Wei out of various thoughts, and they paid more and more attention to his refining methods.

Tianxinzi over there didn't know anything about Ge Wei's situation here. He was sure that Ge Wei was decided, how could a layman who didn't even understand the basic rules of refining weapons be better than a master like him who had been immersed in the way of refining weapons for more than a hundred years? Tianxinzi was immersed in his refining tools wholeheartedly, and to say that his refining techniques were indeed sophisticated, he was about to complete the casting of the sword body at this moment.

On the other hand, after Ge Wei finally finished kneading the dough, he began a process that was even more incomprehensible.

I saw that Ge Wei was calcining this piece of silver-white iron element with real fire, and at the same time kept sprinkling some yellow-brown powder into it.

These powders are one of the accessories he selected from the warehouse, saltpeter.

The appearance of fire saltpeter has made the cultivators incomprehensible. Where is this material used for refining tools, fire saltpeter can usually only be used to raise Danhuo, and the effect is to increase the temperature of Danhuo.

Could it be that this kid is planning to raise a Danhuo? Many people have speculated.

Ke Gewei's actions obviously didn't look like cultivating Danhuo, but more like a refining step.

The cultivation of Danhuo is the first process of opening the furnace and refining the vessel. At this time, isn't it a little late to raise Danhuo? Do you want to use a stoveless fire?

Dan fire needs to be formed in the refining furnace, and there is also the theory of fire without furnace. One of the characteristics of the Danhuo in the refining furnace is that it is easy for the composition of the refining furnace itself to be refined into the magic weapon, which in turn affects the quality of the magic weapon after it is formed. As a result, some refining masters invented the fire without a furnace, using their own true yuan to form a "virtual furnace", and raising Dan fire in the virtual furnace for refining.

Many people saw that Ge Wei did not open the furnace and manipulated the real fire out of thin air, and they all guessed that Ge Wei was actually going to use this method of fire without a furnace.

"Is this kid really an artist who is bold, or is he ignorant? The fire of the furnace, that is, it must have a pure true element as a foundation, and it is not available to people who are not cultivated as profound masters. This little man dares to play treasure, shouldn't he be smiling and generous!"

"Not necessarily, look!"

In the midst of the discussions, I saw Ge Wei casually punching out a few fingers, and a few true yuan palms were shot in the air, and he really built a "virtual furnace" in the air, and the action was understated, and it was clear that it was not difficult. This has shocked many people, this ...... This, how could this kid do this!?

The so-called virtual furnace is an air furnace formed by using the true element configuration. In this way, the refining furnace will not pollute the magic weapon. This is a method that some alchemists will use. Tianxinzi will, but it didn't work, firstly, this is his stunt at the bottom of the box, and he doesn't want to show it lightly, and secondly, building a virtual furnace will also consume a lot of his true yuan.

The cultivators never expected that it was this kind of master technique that appeared in an unknown nameless boy. It's really a big surprise.

Ge Wei's ears are sensitive, and everyone listens to every word of the discussion in his ears, which makes Ge Wei a little surprised, it turns out that this virtual furnace also has the Shu Mountain plane.

This technique was also learned by him from the Qingxu Zhenren, but both he and the Qingxu Zhenren were accustomed to calling this technique: vacuum smelting technology.

There is still a big difference between virtual furnace and vacuum smelting technology in nature. The virtual furnace is an aerobic furnace, and the vacuum smelting is completely isolated from all gases, and the effect is more pure. What Ge Wei built was a vacuum area, not an ordinary virtual furnace as many cultivators thought.

Vacuum smelting technology should be widely applied to the major scientific and technological planes, this technology was formed very early, and the technical content is not high, only a few decades beyond human science and technology. This technology is suitable for all aspects of industrial manufacturing.

The biggest advantage of vacuum smelting technology is that it will not cause secondary pollution to the product, which is suitable for precision manufacturing. It can be used to refine the weapon, which can greatly improve the quality of the finished magic weapon.

Generally, the refining furnace is made of metal, and the high temperature of the Danhuo will more or less melt the inner furnace, so that the magic weapon passively integrates some impurities. Refining masters who strive for perfection may refine the magic weapon after it is baked, and the vast majority of refiners who have no pursuit will not care about it at this point, anyway, the impact of this impurity on the quality of the magic weapon is not particularly serious.

But Ge Wei is a man who strives for excellence. Originally, the materials that could be used in refining this time were not very satisfactory to him, and if he didn't start from the details, he would be embarrassed to take out the magic weapon he refined.

The vacuum smelting technology can prevent the pure iron he has smelted from being polluted twice, and on the other hand, it also plays another vital role, which is not visible to the cultivators.

The key point is the petpeter.

Fire saltpeter, a kind of saltpeter, belongs to the unique ore of the Xiuzhen realm. Ordinary saltpeter is pure white, and firepeter has an extraordinary yellowish-brown color due to the spiritual power of fire.

There is a reason why he chose firepeter as an auxiliary refining material. The main component of petpeter is nitrate, and nitrate and pure iron elements react at high temperature to produce a compound: iron nitride.

This reaction process requires extremely high temperatures, and the fire spirit power contained in the fire saltpeter can help increase the temperature of the real fire, so that the flame temperature in the furnace can reach the standard.

As for why iron nitride is refined, this is a top secret that Ge Wei will never reveal easily.

His confidence in this competition also comes from his trump card. Ge Wei was very confident that as long as his magic weapon was successfully refined, even if Tianxinzi could really refine a spiritual weapon in the end, he would never lose.

In front of Ge Wei, the blazing true fire in the air burned brightly, reflecting his smiling face, and at the same time, it also reflected the faces of all the cultivators who were questioning, surprised, or thoughtful. (To be continued......)