When Zhou Yicheng said this, it was completely out of instinct. He is a student of Chen Heqian, and his major is to engage in materials, so his understanding of materials far exceeds that of Chen Jing. Qin Hai said that the kind of low-temperature steel, Zhou Yicheng had studied it for a long time in the early years, and he was quite impressed. Seeing that Qin Hai used this kind of steel number to make things difficult for Chen Jing, Zhou Yicheng didn't think about it, so he answered directly.

When he finished speaking, he found that a room full of people were looking at him with strange eyes. He was slightly stunned, and his face turned a little pale.

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

The ASTM standard A333GR.3 low-temperature steel is mainly used for the manufacture of pipes in the temperature range of -47 to -101 degrees Celsius, and this type of pipeline is included in the ethylene compressor development plan proposed by Jingshi Machinery. The most important 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 is not up to the mark in China, it is replaced by austenitic stainless steel.

The steel grade that the Americans had already developed in 1964 and Jingshi Machinery still claimed in its 1991 report was not up to par, and on this basis, did they still have the face to claim to have reached the international level of the mid-80s?

"Secretary General Qin, you can't say that......" Zhou Yicheng blushed and tried to defend himself. Of course, he also has a reason to justify, just a steel is not up to par, it is not enough to deny the technical level of the whole machine. Qin Hai dug a pit in this place to make them jump, which was quite a bit of a scoundrel.

Qin Hai didn't have any emotion on his face, and he continued to ask: "The use of arc ultrasonic technology in low-temperature steel welding can improve the impact toughness of joints, which is a process specification that has been formed in foreign countries in the late 70s, why is this not reflected in your plan?" ”

"Arc ultrasound ......" Zhuo Jianguo scratched his scalp and was also dumb. In fact. When formulating this version of the plan, he really considered this problem, but because he was not sure 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 turned this question out.

When Qin Hai asked a question. I didn't expect the other party to give any satisfactory answer. He flipped through the report and threw out his own questions one after another, completely ignoring the fact that the faces of the people led by Zhou Yicheng were getting more and more ugly, and the atmosphere in the room was depressed as if it was going to rain.

"Secretary-General Qin, did you come to Jingshiji today to find our problem?" Chen Jing was the most uncontrollable one among them, and when Qin Hai's questions accumulated to more than 20, she finally couldn't listen anymore and directly interrupted Qin Hai's words. Asked angrily.

Qin Haicai is not afraid that the other party will be angry, anger means that the other party has nothing to say, so he will use this method to fight back. If Chen Jing could say a few truths, why was she so angry?

"Section Chief Chen is serious, I came today just to discuss the problem with the experts, how can it be said that I am looking for fault?" Qin Hai said with a smile.

Chen Jing said: "What you just said is obviously picking bones in eggs. I admit it. There are some things that are not well thought out in our proposal, but this is a side story. Not mainstream. Do you Planning Commissioners only know how to look at these minor details? ”

Qin Hai turned his head to Zhou Yicheng and asked, "Director Zhou, do you also think that the question I just raised is just a trivial matter?" ”

"These problems...... Some of them are of course more important, or rather, very important. Zhou replied carefully with sincerity. He didn't dare to say that these issues were trivial, like Chen Jing, and the layman looked at it lively. Those who are experts and really know how to do it know that the 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 does not mean that he does not know the importance of these issues. But she has some contempt for Qin Hai, and feels that Qin Hai himself does not necessarily understand these technologies, and I am afraid that it is more just a cloud of people. She figured out that Guò lightly denied the importance of these technologies, making it inconvenient for Qin Hai to pursue it further.

But Zhou Yicheng is different, from Qin Hairu's narration, 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, presumably he was prepared, and it was probably not easy to fool them all by being sloppy.

"Secretary-General Qin, you should also understand the difficulties of our enterprise. The questions you just talked about, objectively speaking, are all in place. But this is not a problem for our unit, so it is unrealistic to expect us to solve it all. Take A333GR.3 low-temperature steel as an example, we have also cooperated with the General Iron and Steel Institute to develop, because of the problem of heat treatment process, the surface of the steel pipe manufactured is prone to cracks, the mechanical properties are not up to standard, and the impact value at the low temperature of -101 degrees Celsius is low. We can't make compressors out of this kind of steel, right? Zhou Yicheng said patiently to Qin Hai.

Qin Hai said: "The heat treatment process is not good, and it can be further developed." Spheroidization annealing, controlling the quenching temperature, and tempering multiple times is nothing more than this routine, right? ”

"You're right." Zhou Yicheng said angrily. What Qin Hai said is really a mature routine, the problem is that Zhou Yicheng himself is engaged in this kind of research, why does he need a young man to teach himself this kind of lesson? He asked rhetorically: "Secretary General Qin, I heard Mr. Chen say that you are also an expert in metal materials, do you know how much you need to do in these few things you say casually?" ”

Heat treatment is nothing more than annealing, quenching, normalizing, and tempering, but each process has several temperature and time options, as well as different sequences, and can finally form an astronomical combination. For example, there is a heat treatment process for steel that is described as follows:

Isothermal annealing at 780 to 800 degrees Celsius, holding for 8 to 15 hours, then cooling to 350 to 400 degrees for 4 to 10 hours, then warming to 650 to 670 degrees for 32 to 60 hours......

In this process, a slight adjustment of temperature and time will produce steel with different properties, which is not an exaggeration to describe it as a fraction of a millimeter.

Of course, materials scientists are not trying their luck without an aim, they can derive some general laws through guò theoretical research, such as what kind of lattice structure will be produced by metals at which temperature, and what impact this structure will have on the hardness and toughness of metal materials. Practical personnel are guided by theory to carry out practical yàn, and finally find the best combination.

In the history of science, there have also been cases where scientists follow theories to implement yàn, but the results of the real yàn are very different from the theoretical derivation. The emergence of this situation means that there is a principle that has not been grasped before. Once this principle is understood, the study of materials takes to a new level.

This is how materials research is difficult, but also full of accidents, which makes people want to stop.

Qin Hai knew the difficulty of this, and the difference between him and Zhou Yicheng was that Zhou Yicheng chose to go around the difficulties, but Qin Hai knew that he would never be able to make a breakthrough without crossing these obstacles. He said to Zhou Yicheng: "Director Zhou, aren't these reals what they should do?" We can't always rely on foreign countries for materials, these things have to be done sooner or later, who are you going to put this burden on? ”

His words made everyone uncomfortable, and 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, Section Chief Zhuo, I have really done these things." ”

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, you can take a look at our actual achievements and give us advice." ”

"Fruitful?" Several technicians were a little surprised, and they all gathered around Zhou Yicheng to observe the information handed to him by Qin Hai.

I saw that the content on the data is very concise, the front is the ratio of various elements, then the process of heat treatment process, and then there are specific performance parameters, such as surface hardness, stability, low temperature impact toughness, fatigue resistance, etc., and finally there are fracture scanning electron microscope photos when breaking at different temperatures, from these micron resolution pictures can see the specific shape of the metal lattice.

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

Qin Hai said disapprerovingly: "Where there is a will, everything can be done, what foreigners can do, why can't we do it?" ”

"What about you...... How much time spent? Zhou Yicheng asked.

"Four months." Qin Hai replied that what he said was basically the time spent by the Low Temperature Materials Research Center of the Chemical Design Institute to develop this material, of course, the role played by Celeteli would not be specifically mentioned by Qin Hai.

"It's not easy, it's so rare." Zhou Yicheng muttered, "If we do it, I estimate it will take at least a year." ”

Qin Hai sneered: "Director Zhou is too optimistic, right?" According to my review of the archives of the Planning Commission, five years ago, Jingshi Machinery was preparing to develop this material, but there has been no result until now, and it has been five years since then. Director Zhou said that it can be done in a year, isn't it a bit exaggerated? ”

"This ......" Zhou Yicheng was choked to death by Qin Hai. Qin Hai's calculation of time is correct, the key is that in the past five years, Jingshi Machinery has not continued to develop this material, and the total time used for this material is not even three months. However, how can Zhou Yicheng say such words? (To be continued......)