Liu Jinqiu explained: "Like European and American countries in this era, what is the casting technique they use? When the molten steel comes out, a mold is used, and the ingot is made when the molten steel solidifies. What we are going to adopt is a continuous casting process, so that the molten steel flows, the molds are connected into a string, and the molten steel automatically flows in, and hundreds of steel ingots can be made at a time! You say it's much faster than them. ”

"The continuous casting process originated in Austria in 1958, but the idea of continuous casting in China was in the Han Dynasty, when the coins were minted, the molds of the coins were connected together, and the molten steel continuously entered these molds, and a bunch of copper coins could be quickly obtained."

"However, this method also puts forward special requirements for process accuracy and so on, so only we can adopt such a method in this era, as for the high-speed rolling mill is easy to understand, the rolling mill speed in this era is very slow, and the steel that can be rolled per second is not more than ten meters, but our machine rolls more than fifty meters of steel per second!"

Lin Yuan said: "With these things, then our rails should be able to produce them soon!" ”

After dealing with the rail matter, Lin Yuan thought of the other two directions that Hou Zhengfeng said - laser and communication, both of which require the use of semiconductors, so Lin Yuan naturally remembered Su Zhengming, an expert in inorganic non-metallic materials.

Lin Yuan came to the Beijing Ship Expert R&D Center in Lushun, because Liu Jinqiu led everyone to develop high-performance electrical steel, so the efficiency of power generation has been greatly improved, and all the power has been connected here, and after the power is turned on, the scientific research work of the experts can be carried out normally.

After the identity inspection of the guards, Lin Yuan was allowed to enter the expert research and development center, Lin Yuan inquired and found the place where Su Zhengming was, Lin Yuan saw that there was a three-story building in front of him, limited to the architectural skills of this era, this building did not have a beautiful appearance, it looked bare.

Lin Yuan walked in, the first floor was full of warehouses, and every room was locked with doors, and when he walked up to the second floor, every room on the second floor was still locked, Lin Yuan thought to himself: "This is strange, where are all the people here?" ”

Lin Yuan thought about walking up to the third floor, and finally saw an open door, Lin walked over, looked inside, and saw a stove-like thing in the middle of the ground, the top of the stove was connected to a thick wire, and a large cabinet was connected to the outside of the wire, and a big "danger" sign was painted on the cabinet.

Lin Yuan thought to himself: "This big cabinet should be a transformer, then this furnace should be an electric arc furnace to purify silicon element, and the electric arc furnace produces high temperature, so that the carbon element restores the silicon in the silica into elemental matter." ”

Lin Yuan thought in his heart, so he looked to the side, and sure enough, he saw a bag of fine sand on the ground, the sand was silica, it seemed that he was not mistaken, this furnace was an electric arc furnace used to refine silicon elements.

Lin Yuan approached the electric arc furnace and looked carefully, at this moment, a delicate female voice suddenly came from the door, although this female voice was delicate, but her tone was extremely domineering, the female voice said, "Why did you come in?" Who let you in? Hurry up and get out of the clouds! ”

As soon as Lin Yuan turned around, there was a young girl standing at the door, who looked a few years younger than herself, with a playful baby face, and her shoulder-length hair was even more cute, but she put on a young and old look, frowning and glaring at Lin Yuan, Lin Yuan was stunned for a moment, and the girl spoke again: "Who let you in?" ”

Lin Yuan smiled and said, "Your door is not locked, so I will come in by myself." ”

The girl said again: "Why is your classmate disobedient, did the teacher let you in?" You're coming in yourself! If you don't obey, the teacher won't give you food! ”

Lin Yuan was confused when he heard this, and thought to himself, "What's going on?" How did I become a classmate? Why is she still a teacher! Why can't you eat if you don't obey? What the hell is going on? I'd better hurry up and find Su Lao to ask for an understanding. ”

Lin Yuan was just about to ask, but the girl rushed to the edge of the stove in a few steps and asked, "You didn't touch the things on the stove, did you?" ”

Lin Yuan looked at her cute appearance and wanted to tease her, but after thinking about it, if he did that, this little girl would have to blow up, so he shook his head, and the girl stroked her chest again and again, and said, "I'm scared to death, this is an electric arc furnace, if you touch it, something big will happen." ”

At this moment, a young girl poked her head out at the door and said to the girl, "Teacher Lu, we are here, can we start?" ”

The girl said to the girl, "Okay, let the students in." Then he turned to Lin Yuan and said, "You go back to your classmates and listen carefully, you are not allowed to run around in the future!" ”

Lin Yuan smiled and nodded, the girl raised her eyebrows, her eyes widened, and she said angrily: "You are still laughing, you don't even have the attitude of admitting your mistakes!" Look at how I cleaned you up after I took my classmates on a tour! ”

Lin Yuan was in a daze, and more than 20 young men and girls came in outside, all of whom seemed to be fifteen or sixteen years old, and they all squeezed in front of the stove, Lin Yuan was squeezed to the back at once, Lin Yuan touched the stubble on his chin, and thought: "It seems that I am still young, and she does not see that I am older than others at all." ”

At this time, the girl picked up a long wooden stick, pointed to the stove and said: "This is the electric arc furnace used to smelt high-purity silicon, which student would like to talk about the reaction principle inside?" ”

The girl at first raised her hand, and the girl pointed at her and said, "Come on." ”

"Silica is reduced to silicon and carbon monoxide by carbon at high temperatures," the girl said. ”

The girl nodded and said, "Very good, children, the teacher has a problem again, tell me, can the purity of the silicon produced through this step meet the requirements for the use of semiconductors?" ”

The boys and girls replied in unison, "No." ”

The girl continued, "Well, children, can anyone tell me how to refine silicon?" ”

Lin Yuan saw that the girl was not much older than the boys and girls below at all, and she actually screamed one child after another, she couldn't help it, and laughed out loud, this laugh didn't matter, the girl above heard it at once, she pointed at Lin Yuan with the whip in her hand, and said, "That classmate, you can answer this question." ”

Lin Yuan was distracted just now, and he didn't hear her question clearly at all, and subconsciously asked when she asked like this, "What are you answering?" ”

The girl poked the whip on the ground with a whip, making a "bang" sound, which frightened the boys and girls to look at Lin Yuan worriedly, and the girl said angrily: "How many ways are there to refine silicon?" What are they? ”

Lin Yuan couldn't remember the method of refining silicon, so he had to shake his head and say, "I don't remember." ”

The girl glared at Lin Yuan fiercely and asked the girl just now, "What's the name of this student?" Make a note of it for me. ”

The girl trembled and said, "Teacher, he is not from our class. ”

The girl looked at her watch and said, "There is not enough time, we can't waste time anymore because of him, we will go to another room now, and the teacher will show you the drawing process of monocrystalline silicon." ”

The boys and girls let out a small cheer, and the girl led them outside, Lin Yuan followed behind, thinking: "I even met a beautiful teacher, today is really an interesting day." ”