Siheyuan: Craftsmen of a Great Country

Monday, the 16th day of the New Year.

The open-hearth furnace used for experiments has been built and is ready to be started.

The Ministry of Industry also sent tungsten, chromium and several other available rare metals to the laboratory, along with supporting storage equipment.

Luo Xue has already led her theoretical practice team to officially invest in the trial production of high-precision machine tools.

Su Changming said: "Director Jiang, the open-hearth furnace has been built. When will we start the experiment?"

Jiang Chen said: "We still have to wait for someone."

Just as he was talking, Tao Yuan came over with a middle-aged man in Chinese tunic suit:

"Director Jiang, the person you asked for is here. Let me introduce to you. This is the chemist in charge of water quality testing, Teacher Lu Yuehua."

Jiang Chen smiled and said: "Hello, Teacher Lu, I finally have you here."

Lu Yuehua said: "Director Jiang, hello!"

Then he turned to Tao Yuan and said, "Look, I just told you to come over yesterday. You insisted on taking a rest on the weekend. If you want me to take a break, study is the most important thing."

Then he turned to Jiang Chen and said: "Director Jiang, let's start quickly. Although I have not participated in the development of alloy steel, I have made steel and have experience."

Well, it seems that the gentle chemist is a little impatient.

Tao Yuan said: "Teacher Lu is very enthusiastic about his work. He can't wait to come back to the factory with me to start working that afternoon."

Lu Yuehua said: "I am engaged in materials chemistry, but I happened to be born in northern Qing Dynasty. I have no subject research, so I really can't find anything to do."

"Then Chen Tongshan doesn't want me to join their group. I'm so busy working in the office every day. It's finally a bit of fun, so hurry up."

In fact, flower growers do not yet have the subdivision of materials chemistry, which is just a branch of the larger system.

Jiang Chen said: "Chen Tongshan doesn't want you?"

Lu Yuehua said: "Yes, this guy and I are classmates. He is probably jealous that my grades are better than his. He said that our work rights and responsibilities are similar, and we are wasting national resources in the same group."

Jiang Chen said: "Ha, it seems that we are both fallen people from the end of the world."

Lu Yuehua was stunned: "What? You also thought about joining their alloy steel research team, but you were rejected?"

Jiang Chen shook his head: "That's not true. I discovered a steel quality problem in my hometown and am preparing to study it."

"After Chen Tongshan got the news from the Ministry of Industry, he wanted to intercept Hu. He took people directly to my hometown to conduct research and sealed off the steel-making furnaces."

Lu Yuehua's eyes widened: "So, we are going to race against Chen Tongshan?"

Jiang Chen asked: "Are you confident?"

Lu Yuehua patted his chest: "I was better than him when I was studying, and my research is definitely faster than him."

"Don't he just have a team and equipment? I'm afraid, research still relies on people after all. Come on, let's get started."

Jiang Chen was a little dumbfounded. This guy's personality was in great contrast to his appearance:

"Teacher Lu, do you have any ideas on how to do this?"

Lu Yuehua took out his notebook from his bag: "Of course, I have been idle for the past two days. I tested the remaining water again and found the content of tungsten and chromium in the water."

"Since they have refined high-quality steel using this proportion, we will use this proportion as a benchmark to fluctuate up and down for experiments. You see, I have listed ten recommended proportions of rare elements. We only need..."

"Stop, stop, stop." Jiang Chen interrupted Lu Yuehua: "Before I look at your calculations, let me ask you a few questions."

"Do you know the shape of the steel material when they are water-cooled? Do you know the contact area between the steel and water? Do you know what proportion of these two elements adhere to the steel after contact?"

"Fuck!" Lu Yuehua was stunned for a moment, then cursed, stretched out his hand, tore the results he had calculated so hard for a long time from his notebook, and crumpled them into a ball.

Then he threw it to the ground and stepped on it a few times.

Jiang Chen asked a few simple questions and let him know that the calculations he took for granted had no reference value at all.

Jiang Chen said: "So, our experiment cannot be based on the accidental situation at the steel-making furnace, but must be based on the results under our precise control."

He has already made a judgment about Lu Yuehua in his heart. He should have excellent professional knowledge and strong enthusiasm for work, but his practice is poor.

Then act decisively and willingly.

Such people cannot preside over one thing alone, otherwise they will easily get stuck in the corner because of their own assumptions.

Lu Yuehua nodded: "Yes, I understand. I'll throw it away if you like."

"Then how does Director Jiang think we should proceed?"

Jiang Chen said: "First of all, we have to make one thing clear, that is, in alloy steel, it is not that the more these rare elements are added, the better, but there is a critical point."

“Less than or exceeds this critical point will result in sub-optimal steel quality.”

"So my idea of ​​​​operation is to first add these two elements separately to the material and conduct experiments to see what kind of changes these two materials can produce in the material."

"Of course, this experiment is not blind. Each element is preset with three relatively wide-span ratios, and then these three ratios are used to refine steel."

"After the steel is refined, we can get three sets of data. By calculating these three sets of data, we can get a rough reasonable ratio range."

"For example, if the quality of steel products continues to increase, it means that our ratio can be increased. To what extent we can continue to conduct experiments to determine."

"If the quality of the steel is the best during the middle test, this is the best calculation. Through the changes in the quality of the steel during the two ratios before and after, the optimal ratio can be roughly calculated."

"If the quality of steel continues to decline, it means that our ratio may be too high. This critical point is either smaller than the first ratio, or between the first ratio and the second ratio."

"Once we roughly calculate this critical point, we can mix the two substances together and conduct experiments."

"The results of this test are basically not far from the final ratio. But we also need to go through multiple experiments to minimize the interaction between the two substances after they are superimposed."

"Can you understand what I say?"

Lu Yuehua said: "I'm not a pig! I don't even understand that, then I'm really just like a pig."

"Now I finally understand why you became the director at such a young age. With your fairy-like thinking and rigorous problem-solving ideas, you have already surpassed 99% of people."

Tao Yuan, who had been listening quietly beside him, said: "Comrade Jiang Chen's thinking is indeed the most flexible and bold among all the people I have seen."

"Some things that seem impossible, he can always think of the simplest and most direct way to solve them, and they are very effective."

Lu Yuehua nodded: "This head is worth at least ten divisions."

Nowadays, soldiers have great influence, so military establishment is often used as a unit of measurement for high-quality talents.

Jiang Chen said: "Okay, you guys are going too far. Let's go back to the topic."

"Since the ratio of rare metals and changes in steel quality are not proportional, the results we calculate will be infinitely close to the optimal ratio, but there is a high probability that it is not optimal."

"So we have to do continuous experiments near this result to get the final result."

What was there before was not his head, but the wealth of space.

Just this, not to mention ten divisions, even a hundred divisions cannot be exchanged.

Lu Yuehua said: "Indeed, this change must be a curve similar to a parabola. Only approximate results can be obtained through calculation."

"Don't worry about this. After getting the approximate results, I will find the best ratio through continuous experiments."

Jiang Chen took out a note from his pocket: "This is the ratio of the three groups of experiments that I estimated. According to this method, let's start the experiment."

In order to gain time, Jiang Chen passed the three sets of data he gave.

The critical point is within this interval. After three experiments, the critical point can be roughly calculated.

Lu Yuehua reached out and took it: "Okay, let's get started."

Jiang Chen said: "Okay, Teacher Lu, you are responsible for the proportioning and Su Gong, and your people are responsible for operating according to the quantities according to Teacher Lu's instructions."

"Now, prepare the furnace charge and molten iron!"

The two nodded and began to discuss.

Su Changming: "The capacity of the furnace is half a ton. I will prepare the other ingredients according to the normal steelmaking ratio. But how to add these two elements and how much to add, please ask Teacher Lu for instructions."

Lu Yuehua quickly calculated on his notebook: "Add tungsten concentrate according to this amount, and then add chromium alloy according to this number."

"Then add aluminum granules and sodium nitrate according to these two figures, and mix them evenly with other furnace materials. Add the molten iron after all preparations are completed."