Zhao Jin only stirred it a few times before he could recognize that the molten iron contained a lot of sulfur.
These sulfurs, mixed in molten iron, will make the weapons made somewhat brittle and have average toughness.
This is also the reason why the knife can be chipped when cutting the kind of iron.
Zhao Jin put down the stick in his hand and looked at the anxious people, "It's not enough."
This, this is not enough?
Everyone's eyes widened and they looked at Zhao Jin in disbelief.
"Do you have a mold for the knife?"
The technician was stunned. He knew what the mold meant, but the mold for the knife?
"No, the iron produced in the furnace is semi-liquid and can be directly forged."
Zhao Jin sighed slightly, he never expected that there was not even a mold for the knife in this damn place.
"To make one now," Zhao Jin paused, "you can pour molten iron directly into the mold, and when you take off the mold, it will be a knife."
The technician roughly understood what Zhao Jin wanted to do, and immediately ordered someone to make a mold.
The mold was made quickly and was placed on the stone platform they had specially cleared. It was pitch black.
Zhao Jin touched the mold and looked a little surprised. He lifted the mold and took a closer look to make sure that he was not mistaken. It was indeed graphite.
Seeing that Zhao Jin was somewhat interested in the material of this mold, the technician said: "I don't know what kind of ore this is. It is very dark in color, but it won't melt at all if it is smelted."
Therefore, they have always felt that this ore is quite useless, cannot be melted, and is soft. What use can this ore be used for?
Now it's just right, the temperature of the molten iron is so high that it won't melt, so it's suitable for making molds.
Zhao Jin was silent for a moment, "This is called graphite. Are there many ores like this?"
"Graphite? This name is quite appropriate." The technical officer muttered something in a low voice and then replied: "There are quite a few. I dug a small mine before and they all had this kind of graphite."
Graphite ore...
Zhao Jin's breathing quickened in vain for a moment. They didn't know what this graphite could do. Could he still know?
Graphite conducts electricity!
Can be used to make electrodes!
If you want to experiment with electricity in ancient times, this graphite is essential!
Zhao Jin suppressed his thoughts. Electricity was much more difficult to deal with. He could put it aside for now and work on it slowly later.
The technical officer did not notice anything unusual about Zhao Jin at that moment, but asked: "Sir, do you want to try it now?"
Zhao Jin withdrew his attention from the graphite. When he heard the technical officer's question, he shook his head in denial, "No, you have to build another furnace."
"Is it also this kind of stove?" The technician was a little puzzled.
"No," Zhao Jin took out the drawings from his pocket. He forgot to give them to them yesterday, so he brought them with him when he went out today.
He handed the drawing to the technician and said, "According to the above construction, this is a furnace for making coke. Coal cannot be used."
Not only will the temperature not rise, but the molten iron will also contain a large amount of sulfur.
The technician opened the drawing and took a look. It was just an ordinary earth furnace, which was much easier to build than yesterday's furnace.
Zhao Jin did not leave, but sat beside him, waiting for them to build the stove.
This kind of furnace does not have high requirements, as long as it can raise the temperature to one thousand degrees Celsius, so it can be built very quickly. Zhao Jin simply waited here.
After the furnace was built, Zhao Jin taught them how to make coke and then use the coke to smelt molten iron.
Because the temperature of the coke is high enough, what comes out of the furnace this time is no longer semi-liquid wrought iron, but molten wrought iron.
"Put the smelted wrought iron in together with the pig iron for smelting." Zhao Jin looked at it and finally showed a satisfied smile.
Want to practice again?
Everyone on the scene was a little confused, but Zhao Jin proposed that whether it was the transformation of the furnace or the refining of the so-called coke, the use of these was indeed better than what they had originally smelted.
They had no choice but to put the pig iron in together with the molten iron and smelt it as Zhao Jin said.
"Pig iron can remove impurities in the wrought iron and evenly distribute the carbon elements in it." Considering that they did not know what carbon was, Zhao Jin explained a few more words.
"These irons contain carbon elements. If the carbon elements are evenly distributed, the final solidified knife will be more tough and hard."
Everyone seems to understand but understand that by doing this, they can make better weapons.
After taking out the molten iron from the furnace again, Zhao Jin directed them to pour the molten iron directly into the mold.
After the molten iron solidified and cooled, an even brighter long knife appeared in everyone's eyes.
Zhao Jin picked up the long knife, flicked it twice with his fingers, and whispered: "This is the real steel knife."
The crisp and long sound reaches everyone's ears.
They have been smelting weapons all year round, and you can tell by the sound that this sword is absolutely extraordinary!
Zhao Jin tried the original sword again.
"bite--"
"when--"
This time, the knife in Zhao Jin's hand no longer had any gaps, and the blade was still as sharp as ever.
"Okay!" the technical officer applauded, stroking his palms, his eyes not hiding his respect for Zhao Jin, "I'm afraid you are not a god from heaven!"
He has strong martial arts skills, beautiful literary talent, and can even forge such a precious sword!
Moreover, unlike those rare swords, the technicians who watched the whole process clearly knew that this kind of sword could be mass-produced!
Everyone knows clearly what this means.
Zhao Jin did not put down the knife, but played with the long knife in his hand. His starry eyes glanced at everyone on the field, with a half-smile on his lips. "If anyone dares to spread this method..."
Zhao Jin suddenly picked up a big knife at his feet, raised his right hand and slashed towards the big knife!
The big sword in the air was cut off directly from the waist!
"I will call him like this knife!"
The technical officer hurriedly led the others to kneel down, "Please don't worry, sir! I'm your official, I will strictly instruct them not to spread the word!"
After being shocked, Zhao Jin put away his cold face and said, "Get up."
"In three months, I want all the soldiers in the Yunzhou City military camp to switch to this kind of sword. Can it be done?"
How can any technical officer in this society dare to say that he can't do it?
"Please rest assured, sir! When I leave office, I will definitely send all the knives to the military camp."
Zhao Jin nodded, looked at the remaining molten iron, and thought, "Try to see if you can make a steel rope that has good toughness and can carry a person or even more weight.
"
The ductility of molten iron smelted with coke is much better than before, so there should be no major problems.
The technical officer had no idea, so he had no choice but to respond: "I will definitely try my best."
Zhao Jin left the foundry bureau without staying any longer.
Then, Zhao Jin called Seng Fan over and said, "Send someone to secretly keep an eye on everyone in the smelting field. Today they learned about a new method of refining weapons. This method cannot be spread out."
Due to various problems, the address has been changed. Please save the new address to avoid getting lost.
The chapter content of the web version is slow, please download the Aiyue app to read the latest content
Please exit the transcoding page and download the Aiyue app to read the latest chapter.
Newly provides you with the fastest free full version update of The Bastard’s War, Chapter 148 The Real Steel Knife is free to read. This chapter has been completed!
