Material Empire

When Zhou Yicheng said this, it was completely out of instinct. He is Chen Heqian's student, and his major is materials, so his understanding of materials far exceeds that of Chen Jing. Qin Hai said that Zhou Yicheng had studied the low-temperature steel for a long time in the early years, and he was quite impressed. Seeing Qin Hai using this steel number to make things difficult for Chen Jing, Zhou Yicheng answered without thinking.

After he finished speaking, he realized that everyone in the room was looking at him with strange eyes. He froze for a moment, and his face turned pale.

Damn, it turns out that Qin Hai is waiting for him here.

ASTM standard A333GR.3 low-temperature steel is mainly used to manufacture pipelines in the temperature range of -47 to -101 degrees Celsius. This type of pipeline is included in the ethylene compressor development plan proposed by Jingshiji. The most terrible thing is that they specifically proposed in the report that this part of the pipeline should use A333GR.3 low-temperature steel, but because this kind of steel in China is not up to standard, it is replaced by austenitic stainless steel.

The steel grade developed by the Americans in 1964 was still claimed by Jingshi Machinery in the report in 1991. Based on this, do they still have the face to claim to have reached the international level in the mid-1980s?

Secretary-General Qin, you can't say that... Zhou Yicheng blushed and tried to defend himself. Of course, he also has reasons for defense. Just one kind of steel is not enough to deny the technical level of the whole machine. Qin Hai dug a hole in this place for them to jump in, which seemed to be playing a rascal.

There was no emotion on Qin Hai's face, and he continued to ask: Using arc ultrasonic technology in low-temperature steel welding can improve the impact toughness of joints. This is a process specification that has been formed in foreign countries in the late 1970s. Isn’t that reflected in the plan?”

Arc ultrasound... Zhuo Jianguo scratched his scalp and became dumb. In fact, when formulating this version of the plan, he really considered this problem, but because he was not sure how to solve several of the difficulties, he finally gave up the application of this technology. He didn't expect that Qin Hai's eyes were so poisonous that he brought up this question.

When Qin Hai asked the question, he didn't intend that the other party could give any satisfactory answer. He flipped through the report, throwing out his own questions one after another, completely ignoring that the faces of everyone headed by Zhou Yicheng became increasingly ugly, and the atmosphere in the room was oppressive like it was about to rain.

Secretary-General Qin, did you come to Jingshi Jiji today to find our problems? Chen Jing was the most restless one among them. When Qin Hai's problems accumulated to more than 20, she finally Unable to listen anymore, he directly interrupted Qin Hai and asked angrily.

Qin Hai was not afraid that the other party would get angry. Getting angry meant that the other party had nothing to say, so he used this method to fight back. If Chen Jing could tell a few truths, why was she so furious?

Section Chief Chen is serious. I am here today just to discuss the problem with the experts. How can I say I am looking for a problem? Qin Hai said with a smile.

Chen Jingdao: What you said just now is obviously nitpicking. I admit that there are indeed some ill-considered aspects in our plan, but this is a side issue after all, not the mainstream. Don't you think that the planning committee just looks at the problem? Do you only know how to look at these details?

Qin Hai turned his head to Zhou Yicheng and asked, Director Zhou, do you also think the question I just raised is just a side issue?

These questions...some of them are of course more important, or very important. Zhou Yicheng answered carefully. He didn't dare to say that these problems were just minor issues like Chen Jing did. A layman would watch the excitement, while an expert would watch the doorway. Those who really know how to do it would know that these problems pointed out by Qin Hai are actually very important, and they are the key links that affect the technological gap between China and foreign countries. .

As the head of the intelligence section, Chen Jing certainly didn't mean that she didn't know the importance of these issues, but she had some contempt for Qin Hai, and she felt that Qin Hai himself didn't necessarily understand these technologies, and I'm afraid he was just following others' opinions. She wanted to lightly deny the importance of these technologies, so that it would be inconvenient for Qin Hai to pursue further.

But Zhou Yicheng is different. From Qin Hai's narration, Zhou Yicheng has gradually felt that the young man in front of him is not simple. Reminiscent of Chen Heqian's admiration for Qin Hai, Zhou Yicheng seemed to understand something. Qin Hai's ability to point out these problems must have been prepared. It may not be easy to fool them all.

Secretary-General Qin, you have to be considerate of our company's difficulties. The problems you just mentioned, objectively speaking, all exist. But this is not the problem of our unit, so it is unrealistic to expect us to solve them all. Yes. Take A333GR.3 low-temperature steel as an example. We have also cooperated with the General Iron and Steel Institute to develop it. 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. At -101 The impact value at low temperature is low. We can't use such steel to make compressors, can we? Zhou Yicheng said to Qin Hai patiently.

Qin Hai said: The heat treatment process is not good, you can continue to develop it. Spheroidizing annealing, controlling the quenching temperature, and tempering multiple times, is nothing more than this routine?

You are right. Zhou Yicheng said angrily. What Qin Hai said is really a mature routine. The problem is that Zhou Yicheng himself is engaged in research in this field, so how can he need a young man to teach him this kind of class? He asked back: Secretary-General Qin, I heard from Mr. Chen that you are also an expert in metal materials. Do you know how many experiments you need to do for the few things you just said?

Heat treatment is nothing more than four processes of annealing, quenching, normalizing, and tempering, but each process has several temperature and time options, as well as differences in the order, and finally can form an astronomical combination. For example, there is a heat treatment process for steel that is expressed 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 raising the temperature to 650 to 670 degrees, holding for 32 to 60 hours...

In this process, with slight adjustments in temperature and time, steel products with different properties can be produced. It is not too much to describe it as a slight loss or a thousand miles.

Of course, material scientists are not aimlessly trying their luck. Through theoretical research, they can draw some general laws, such as what kind of lattice structure metal will produce at which temperature, and this structure is important for The hardness, toughness, etc. of the metal material will have any effect. Experimenters conduct experiments under the guidance of theory, and finally find the best combination.

In the history of science, there have also been such situations: scientists conduct experiments according to the theory, but the experimental results are quite different from the theoretical derivation. The emergence of this situation means that there is a principle that the predecessors did not grasp. Once this principle is thoroughly understood by people, material research will leap to a new level.

Materials research is so arduous and full of chance, which makes people addicted.

Qin Hai knew the difficulty. The difference between him and Zhou Yicheng was that Zhou Yicheng chose to walk around the difficulties, but Qin Hai knew that he would never be able to make a breakthrough unless he crossed these obstacles. He said to Zhou Yicheng: Director Zhou, shouldn't these experiments be done? We can't always rely on foreign materials for materials. These experiments will have to be done sooner or later. Who are you going to push this burden on?

What he said made everyone feel uncomfortable, Zhuo Jianguo said coldly: It's not easy to talk big, Secretary-General Qin will know if he does it himself.

Qin Hai smiled slightly and said, Coincidentally, Chief Zhuo, I have actually done these experiments.

Speaking of this, he opened his briefcase, took out another stack of materials from the bag, handed it to Zhou Yicheng, and said, Director Zhou, take a look at our experimental results and give us some suggestions.

Experimental results? Several technicians were a little surprised, and they all moved to Zhou Yicheng's side to observe the information Qin Hai handed him.

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

Everyone is engaged in technology, and they have some basics in material technology, and they can know what these parameters mean at a glance. Zhou Yicheng was the most stimulated. Holding this document, he asked Qin Hai in surprise: Is this really the technology you developed?

Qin Hai said disapprovingly: Those who have aspirations can achieve success. Why can't we do what foreigners can do?

Then...how much time did you spend? Zhou Yicheng asked.

Four months. Qin Hai replied. He was basically talking about the time it took for the Low Temperature Materials Research Center of the Chemical Design Institute to develop this material. Of course, Qin Hai would not specialize in the role played by Tsereteli. brought up.

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

Qin Hai sneered and said, Director Zhou is too optimistic, isn't he? According to the files of the Planning Commission, Jingshiji was preparing to develop this material five years ago, but there is no result until now. It has been five years It’s over. Director Zhou said that it can be done in a year, isn’t it a bit exaggerated?”

This... Zhou Yicheng was so lucky that Qin Hai didn't choke him to death. Qin Hai's calculation of the time was correct. The key point is that in the past five years, Jingshiji did not continue to develop this material, and the total time spent on this material was less than three months. However, how could Zhou Yicheng be able to say such a thing?