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When I said this sentence, I am completely in an instinct.

He is Chen Heqian's student, and the professional is to engage in materials, so the understanding of materials is far more than Chen Jing.

Qin Hai said that low temperature steel, Zhou Sheng has been studying for a long time in the past few years, and the impression is quite profound.

Look at Qin Hai, this steel number is coming to Chen Jing, Zhou Huan wants to have no thought, I will answer directly.

When he finished, he found that the people in a house were looking at him with a strange eyes.

He is slightly god, and his face is a little white.

Specially, the original Qinhai is waiting for himself here.

A333GR of ASTM standard.

3 Low Temperature Steel, mainly used to manufacture the pipeline of the -47 to -101 degrees Celsius temperature zone, which contains such a pipe in the vinyl compressor development plan proposed by the Jingshi Machine.

The most interesting thing is that they specifically proposed in the report that this part of the pipe should use A333GR.

3 Low temperature steel, but because of such steels in China, therefore, the austenitic stainless steel is used to replace it.

In 1964, the steel species that have been developed in 1964, the Jingshi Machine still claimed that in the 1991 report, I rely on this, and they still have the face of the International III level in the 80s? "The Secretary General of Qin, this can not be said ..."

Zhou Since is red-faced face, trying to defecate.

Of course, there is also a reason to justify, only a steel is not related, not enough to deny the technical level of the whole machine.

Qin Hai "planed a pit in this place to let them jump, quite some playing.

There is no emotion in the Qinhai face, he continued to ask: "Use arc ultrasonic technology in low temperature steel welding to improve the impact toughness of the joint, which is the process specification that has formed in the late 1970s, why is you in your This is not reflected in the program? "

"Arc Ultrasound ..."

Zhuo Jianguo scratched the scalp and dumb.

in fact.

When this version is developed, he really considers this problem, but because there is no grasp of several difficulties, it is finally given up the application of this technology.

He didn't expect that the eyes of Qin Hai were actually so poisoned, and this problem was also turned out.

When Qin Hai made a question.

I didn't plan to give any satisfactory answer.

He turned into the report, and a problem that took one of himself, the whole face of the people who were head-out, and the atmosphere in the room was in sufficiently in sufficient.

"The Secretary General of Qin, you are coming to the Jingshi machine today, is it to find our problem?"

Chen Jing is one of the most indispensable, when Qinhai's problem accumulated to 20, she finally can't hear, and I interrupt the Qinhai.

I asked anger.

Qin Hai is not afraid that the other party is angry. It means that the other party has nothing to say, so this method will be used to counterattack.

If Chen Jing can say a few truth, why have she been so angry? "Chen Kee said heavy, I came today, just want to discuss problems with experts, how can I say to find a problem?"

Qin Hai smiled and said.

Chen Jingdao: "You just said, it is obviously the bones in the egg.

I admit.

In our plan, there is indeed some places that consider owing, but this is a branch after all.

Not a mainstream.

Do you know how to see these branches? "

Qin Hai turned his head to Zhou Sheng, asked: "Zhou Director, do you think that the question I just mentioned is just a branch?"

"These problems ... Some of course is more important, or it is very important.

Zhou replied by honesty.

He didn't dare to say that these problems were branches like Chen Jing.

Inner line, truly understand, you know that these problems pointed out in Qinhai are actually very important, they are the key link affecting the gap between China and foreign technology.

Chen Jing as a member of the Intelligence, of course, not to say the importance of these issues.

But she has some despise psychology to Qinhai. I feel that Qin Haimen does not see these technologies. I am afraid that more is only a cloud.

She wants to pay attention to the importance of these technologies through a light copy, let Qin Hai will pursue it.

However, Zhou Yicheng is different, from the narrative of Qinhai, Zhou Sheng has gradually felt that this young man is not simple.

Lenovo said Chen Heqian's appreciation of Qin Hai, Zhou Yicheng seems to understand something.

Qin Hai can point out these problems, it is necessary to come to the face, I want to make them in the eyes, I am afraid it is not easy.

"Secretary of Qin, you must also understand the difficulty of our company.

The problems you just said, objectively said, all exist.

But this is not our own question, so I expect that we all solve it, it is not realistic.

Take A333GR.

3 Low Temperature Steel, we have also developed with the steel collector, because of the problem of heat treatment process, the surface of the steel pipe manufactured is prone to cracks, the mechanical properties can not reach the standard, and the impact value on -101 degrees Celsius low temperature Low low.

Can we always take such a steel to remove the compressor? "

Zhou Chengzhi's temperament said to Qin Hai.

Qin Hai said: "The heat treatment process can not be developed.

Slowing annealing, control the quenching temperature, tempering multiple times, is nothing more than this set? "

"You are right.

Zhou said sincerely.

The Qinhai said these is really a mature routine. The problem is that Zhou Yicheng himself is to engage in this research. I need a child to tell myself this lesson? He asked: "Qin secretary, listened to Mr. Chen said, you are also a master of metal materials, you know how much experiment you need to do, do you need to do?"

Heat treatment is not an annealing, quenching, normal fire, tempering four processes, but each process has several temperature and time selection, and there is a different order, eventually forming an astronomical combination.

For example, there is a heat treatment process for steels to express: heating to 780 to 800 degrees isothermal annealing, heat insulation 8 to 15 hours, then cool to 350 to 400 degrees, heat insulation 4 to 10 hours, then temperature rise to 650 to 670 degrees In this process, the temperature and time are slightly adjusted in this process, and the steel materials of different performance will be produced, and the loss of the loss, the difference is poor, and it is never calculated.

Of course, the materialists are not without the target, they can draw some universal laws through theoretical research, such as which temperature, can produce what kind of lattice structure, and this structure What effect will be caused by hardness, toughness, and the like of metal materials.

The experimental person is experiment with the guidance of theory and ultimately identifies the best combination.

In the history of science, there have been such situations: scientists conduct experiments in accordance with theory, the experimental results are derived from theory.

This happens, means that there is a principle that there is no mastery of the former.

Once this principle is eaten, the material research has jumped into a new step.

Material research is the hardships, but it is full of accidents, making people want to stop.

Qin Hai knows the difficulty of this, his difference between Zhou Yicheng lies in that Zhou Sheng has chosen to go around, but Qin Hai knows that he doesn't have to break through these obstacles, will never make breakthroughs.

He said to Zhou Yicheng: "Zhou Director, is these experiments should not be done? We can't always depend on materials, these experiments have to do it morning and evening, how do you plan to push this burden?"

He is not comfortable in his heart, and Zhuzhou said coldly: "It is not easy to say that the Qin Secretary-General will know.

Qin Hai smiled slightly and said: "Clever, Zhuo Long, I really did it.

To put it here, he opened his briefcase and took a stack of information from the bag. He handed a stack of Zhou Yicheng, saying: "Zhou Director, you look at our experimental results, and give us advice.

"Experimental results?"

Several technicians are somewhat surprised, and they will come to Zhou sincerity, and observe the information given to him.

I only see the content of the information is very simple. The front is the ratio of various elements, and then the process of heat treatment process, and then it is specific performance parameters, such as surface hardness, stability, low temperature impact toughness, anti-fatigue, etc. Wait, there is also a fracture scanning electron microscope photo when breaking at different temperatures, and can see the specific shape of the metal lattice from these resolutions.

Everyone is in technology, and there is some foundation for material technology. I know what these parameters mean.

Zhou Si is the most exciting, he holds this information, surprisingly asked Qin Hai: "This is really your development?"

Qin Hai did not say: "Your people, things are competing, what do we do?"

"Then you ... how much time?"

Zhou Yicheng asked.

"Four months.

Qin Hai replied, he said, basically the time spent on the development of this material, and of course, the Qin Hai is not specifically proposed by the role of the Chemical Design Institute's Low Temperature Material Research Center.

"It's not easy, this is too rare.

Zhou said honestly, "If we do it, I estimate that at least one year.

Qin Hai said: "Zhou Director is too optimistic? According to I check the archives of the Planning Commission, five years ago, the Jingshi machine is ready to develop this material, and there is no result, this is already five years. Over the past.

Zhou Director said that it can be found in a year, is it a bit exaggerated? "

"This……"

Zhou Honest is honest to death by Qin Hai.

The time of Qin sea calculates, the key is that the Beijing Shi Machine has not continued to develop this material in five years, and it is not available for three months.