Material Empire

When Zhou Yicheng said this sentence, it was completely out of instinct. He is a student of Chen Heqian. He majors in materials, so he knows more about materials than Chen Jing. Qin Hai said that the low-temperature steel, Zhou Yicheng had studied it for a long time in the early years, and was quite impressed. Seeing that Qin Hai used this steel to make Chen Jing difficult, Zhou Yicheng didn't even think about it, so he answered directly.

When he finished speaking, he found that everyone in the room was looking at him with a strange look. With a slight faint of expression, his face turned pale.

Special meow, it turned out that Qin Hai was waiting for himself.

The standard a333gr.3 low temperature steel is mainly used to manufacture pipelines in the temperature range of -47 to -101 degrees Celsius. Such pipelines are included in the development plan of the ethylene compressor proposed by Jingshiji. Most terribly, they specifically proposed in the report that this part of the pipeline should use a333gr.3 low temperature steel, but because this type of steel in China is still not enough, it is replaced by austenitic stainless steel.

The Americans have developed steel types in 1964. Jingshiji still claimed in the 1991 report that it was not a pass. Based on this, do they still claim to have reached the international level in the mid-1980s?

"Secretary-General Qin, this cannot be said ..." Zhou Yicheng blushed, trying to explain. Of course, he also has a reason to justify. Just one steel is not enough, and it is not enough to deny the technical level of the whole machine. Qin Hai made a pit in this place to make them jump.

There was no mood swing on Qin Hai's face. He continued to ask: "Using arc-ultrasonic technology in low-temperature steel welding can improve the impact toughness of joints, which is a process specification that has been formed abroad in the late 1970s. Why is this not reflected in your plan?"

"Arc ultrasound ..." Zhuo Jianguo scratched his scalp and was dumb. In fact, he really considered this problem when he formulated this version of the plan, but because he was not sure about solving some of these difficulties, he eventually gave up the application of this technology. He did not expect that Qin Hai's eyes were so poisonous. This problem has also been turned out.

When Qin Hai asked a question, he did not intend to give a satisfactory answer. He flipped through the report. Throw your own questions one by one, completely disregarding the faces of everyone headed by Zhou Yicheng, and the atmosphere in the room is suppressed like rain.

"Secretary-General Qin, are you here today at Jingshiji. Did you come to look for our problems?" Chen Jing was one of the most restless. When Qin Hai's problems accumulated to more than 20, she finally He couldn't listen any more, interrupted Qin Hai's words directly and asked angrily.

Qin Hai is not afraid of the other party's anger, because anger means that the other party has nothing to say, so he will use this method to fight back. If Chen Jing can say a few things, why is she so angry?

"Chen Ke has made a lot of remarks. I am here today. I just want to discuss the problems with experts. How can I say that I am looking for problems?" Qin Hai said with a smile.

Chen Jingdao: "These things you just said are obviously the bones of the egg. I admit that there are still some considerations in our plan, but this is after all a minor part, not the mainstream. Does the Planning Committee look at the problem? Just know how to look at these subsections? "

Qin Hai turned her head to Zhou Yicheng and asked, "Director Zhou, do you think the questions I just asked are just minor issues?"

"Some of these questions ... of course are more important, or rather. They are very important." Zhou Yicheng replied carefully. He didn't dare to say that these issues were trivial like Chen Jing's. Those who know how to do it, and those who really understand it, know that these issues pointed out by Qin Hai are actually very important. They are the key links that affect the technological gap between China and foreign countries.

Chen Jing, as the chief of the intelligence department, certainly does not mean that she does not know the importance of these issues, but she has some contempt for Qin Hai, and feels that Qin Hai herself does not necessarily understand these technologies. She wants to deny the importance of these technologies by understatement, so that Qin Hai can no longer be held accountable.

But Zhou Yicheng is different. From Qin Hairu's narratives, Zhou Yicheng has gradually felt that the young man in front of him is not simple. Thinking of Chen Heqian's appreciation of Qin Hai, Zhou Yicheng seemed to understand something. Qin Hai was able to point out these problems, and it must have been prepared. It would not be easy for me to sloppy and fool them all.

"Secretary-General Qin, you also have to be considerate of the difficulties of our enterprise. Objectively speaking, these problems that you have just mentioned exist. But this is not a problem of our unit, so it is unrealistic to expect us to solve them all. For example, for a333gr.3 low temperature steel, we have also developed it in cooperation with the Central Iron and Steel Institute. Due to problems in the heat treatment process, the surface of the manufactured steel pipe is prone to cracks and the mechanical properties are not up to standard. The impact value at the low temperature is low. We can't use this steel to make compressors, right? "Zhou Yicheng said to Qin Hai with patience.

Qin Hai said: "The heat treatment process is not working, and you can continue to develop it. Spheroidizing annealing, controlling the quenching temperature, and tempering multiple times, is this the routine?"

"You're right." Zhou Yi said in a desperate manner. What Qin Hai said is really a mature routine. The problem is that Zhou Yicheng himself is doing research in this area. How do I need a young man to teach himself such a course? He asked in turn: "Secretary-General Qin, after listening to Mr. Chen, you are also an expert in metal materials. Do you know how many experiments you want to say casually?"

Heat treatment is nothing more than four processes of annealing, quenching, normalizing, and tempering, but each process has several choices of temperature and time, and there are different orders, which can finally form an astronomical digital combination. For example, a heat treatment process for steel is described as follows:

Heating to 780 to 800 degrees isothermal annealing, holding for 8 to 15 hours, then cooling to 350 to 400 degrees, holding for 4 to 10 hours, then heating to 650 to 670 degrees, holding for 32 to 60 hours ...

In this process, a slight adjustment in temperature and time will produce steel with different properties. It is not excessive to describe it by the slightest loss or thousands of miles.

Of course, material scientists are not blindly trying their luck blindly. Through theoretical research, they can come up with some general laws, such as what kind of lattice structure the metal will produce at which temperature. What impact does the hardness and toughness of metal materials have? The experimenter is to carry out experiments under the guidance of the theory, and finally find the best combination.

In the history of science, there have also been cases in which scientists perform experiments according to theories, but the experimental results are very different from the theoretical derivation. The emergence of this situation means that there is a principle that previous people did not grasp. Once this principle has been thoroughly understood, materials research has taken a new step.

Material research is so difficult, but also full of contingency, which makes people want to stop.

Qin Hai knew the difficulty, and his disagreement with Zhou Yicheng was that Zhou Yicheng chose to go around the difficulties, but Qin Hai knew that he would never make a breakthrough without crossing these obstacles. He said to Zhou Yicheng, "Director Zhou, shouldn't these experiments be done? We can't always rely on foreign materials. These experiments will have to be done sooner or later. To whom do you intend to push this burden?"

His words made everyone uncomfortable, and Zhuo Jianguo said coldly, "It's not easy to talk big, and Secretary-General Qin will know what to do."

Qin Hai smiled slightly and said, "It's a coincidence, Chief Zhuo, I have really done these experiments."

Having said that, he opened his briefcase, took out a stack of information from the bag, and handed it to Zhou Yicheng, saying, "Director Zhou, look at the results of our experiments and give us your opinions. "

"Experimental results?" Several technicians were a little surprised, and gathered together with Zhou Yicheng to observe the information Qin Hai handed to him.

I saw that the content of the information is very concise. The front is the proportion of various elements, then the process of heat treatment process, and then the specific performance parameters, such as surface hardness, stability, low temperature impact toughness, fatigue resistance, etc. Etc. Finally, there are fracture scanning electron microscope photos of fractures at different temperatures. From these micron-resolution pictures, the specific shape of the metal lattice can be seen.

Everyone is engaged in technology, and has some basics in material technology. At a glance, you know what these parameters mean. Zhou Yicheng was the most irritated. He took this information and asked Qin Hai in surprise: "Is this really a technology you developed?"

Qin Hai said disapprovingly: "Aspirants ~ www.novelmtl.com ~ everything is successful, why can't we do what foreigners can do?"

"Then how much time do you ...?" Zhou Yicheng asked.

"Four months." Qin Hai replied. What he said was basically the time it took for the Cryogenic Materials Research Center of the Chemical Design Institute to develop this kind of material. Of course, Qie Hai would not play a role in it. Raised it.

"It's not easy, it's really rare." Zhou Yicheng murmured, "If we do it, I think it will take at least a year."

Qin Hai sneered: "Director Zhou is too optimistic? According to my review of the files of the Planning Commission, Jingshiji was preparing to develop this material five years ago, and it has no results until now. It has been five years. It's over. Did Chief Zhou say that it can be done in one year?

"This ..." Zhou Yicheng hung up and was strangled to death by Qin Hai. Qin Hai's time is right. The key is that in the past five years, Jingshiji has not continuously developed this material. The total time spent on this material adds up, not even three months. However, how can Zhou Yicheng make such a statement? (To be continued)