Chapter 403 Sure enough, it can be optimized
Since Mr. Zhang can ask this question, the answer is naturally self-evident.

"Is this Comrade Gao?"

"Yes, it's him. In addition to Starlight Guidance, there are also UDMH/N60O stored at room temperature, UDMH high yield process, rocket engine throat lining, gas rudder materials, DJS-DJ, etc., all of which are his work."

President Jin opened his mouth wide: "This is a research institute, and it's a comprehensive research institute. You said this is a person?"

From Mr. Jin's perspective, there is no other explanation except this. How could it be possible if it were not a large, comprehensive research institute?

Materials, chemicals, electronics, computers, and automatic control are all involved here. If one leg is needed to cross each boundary, then this comrade is an octopus spirit, right?
President Jin had an image in his mind of an octopus grabbing several boats at the same time. He held his laughter and did not laugh. It would be too unfair to the comrades who had made such a great contribution.

Mr. Zhang shook his head. “No, he is the director of a research lab, but this lab only focuses on materials. He does everything else himself. However, he mainly proposes principles and technical routes, and the specific implementation is still done by others.”

"That's normal. It's impossible for a person to have so much time to complete so many things."

After saying that, I changed my mind and realized, what the hell is normal about this? This is not normal at all.

He can propose principles and technical routes, and others can produce results by following the direction he proposed. This in itself shows that this person has profound attainments in the direction he is involved in.

Although it seems to be empty talk, talking without thinking and thinking carefully are two different concepts.

Having said that, whether it is normal or not, it is impossible for the Defense Work Committee to lie. The strapdown inertial navigation system must have come from that place first, so there will be no problem with that.

"Then, Lao Zhang, please take the trouble to go to Beijing. From your appearance, you must be interested in strapdown inertial navigation. In this case, it is only right for you to go to the source of this technology to inquire about it. After all, you are all acquaintances."

"Okay, I'll get ready and try to get there as soon as possible."
-
Haihekou City is a city famous for its language art.

At the 1761 Institute, Yu Yuncheng was processing the early experimental data on the growth of mercury cadmium telluride crystals.

Almost two months have passed since June when he went to Beijing to find Gao Zhendong to obtain the manufacturing process of mercury cadmium telluride crystals.

After returning, it took some time to transform the original swing furnace into a pressurized recrystallization furnace. Moreover, due to manpower and related equipment issues, only one furnace could be converted at a time.

It was not until July that the trial production of mercury cadmium telluride crystals officially began.

Fortunately, when Yu Yuncheng modified the furnace, he was careful and could recrystallize a batch of samples at the same time.

Just when he was processing the data, a colleague from the research group came to him with new data.

"Engineer Yu, the test results of these two are out in 20 days."

The pressurized recrystallization process of mercury cadmium telluride crystals is a very long process. It is true that it is crystal growth. Its time span is really as long as that of plant growth.

If we look at the time span of the entire process, it was longer than the tenure of Prime Minister John Bull, the lettuce prime minister, in Gao Zhendong's previous life.

In accordance with Gao Zhendong's requirements, Yu Yuncheng took out two quartz reaction tubes from the crystallization furnace every five days to test the impact of annealing time, or recrystallization time, on the crystal structure.

This caused some trouble for Yu Yuncheng. After all, taking out the pipes from the pressurized furnace was not as easy as just reaching in with a clamp and taking them out.

One thing to consider is the basic constancy of pressure, and the other is the basic constancy of temperature.

Yu Yuncheng and his colleagues in the institute designed an ingenious mechanism. Simply put, the samples are similar to when a submarine diver exits the cabin from the bottom of the sea, or when an astronaut exits the cabin in space, they first enter the transition cabin, then seal the main cabin to ensure that the environment in the main cabin remains unchanged, and then open the passage between the transition cabin and the outside world to take out the samples.

It took almost a month to start the crystal growth experiment, and this was the main reason.

In fact, this thing is not necessary on formal production equipment, but the reason why test equipment is expensive is not only due to small production quantities, high uncertainty, and higher performance requirements, but also because of additional requirements like this.

Fortunately, in this system, the pressure is only to ensure that the reaction tube does not explode, and it is not a factor affecting the final product. The requirements for pressure control accuracy are not high.

At the same time, Mr. Gao also said that the accuracy requirements for temperature control are not high.

These two "not highs" finally made the renovation much easier for Yu Yuncheng and his team, which also made Yu Yuncheng once again admire Chief Engineer Gao's precise selection of technology.

After the first batch of HgCdTe crystals began to grow, two quartz reaction tubes were taken out every five days to monitor the growth of the recrystallized HgCdTe crystals.

"Let me see!" Yu Yuncheng, who was processing the data, took the data. While looking at the data, Yu Yuncheng compared it with the test results of the samples he had taken out several times before.

"The crystal structure has been continuously improving. It seems that Chief Engineer Gao's theoretical starting point is correct. It will take a long time for this thing to grow."

The comrade who delivered the data laughed and said, "Everything else is fine, except that this time is really too long, and it is still being improved, and I don't know where it will end."

Yu Yuncheng answered casually: "Chief Engineer Gao also said that this time can be optimized. The key is to achieve a balance between the degree of improvement in the crystal structure and the length of recrystallization time. The series of experiments we are doing now are just preparations for this."

When the crystal structure improves to a certain extent, there is no need to continue, as the recrystallization furnace consumes electricity.

After that, he did some calculations on paper: "Well, although the degree of structural improvement is positively correlated with the recrystallization time, based on the data from the 5th, 10th, and 15th days, the correlation is not linear. The longer the time, the lower the degree of improvement. No wonder Director Gao said there is room for optimization."

He thought about it and asked the comrade who was doing the test: "It has been five days since the second furnace was put into the test. What are the results of the samples taken out of this batch? Have they come out yet?"

"It's out." The experimenter handed him another set of data.

After the first furnace was renovated and put into operation, and the renovation was proven to be effective, the comrades in charge of this matter started to renovate other furnaces. With the ready-made experience from the first furnace, the second one was much faster and was put into operation in almost two weeks.

According to Yu Yuncheng's idea, at least three furnaces need to be modified to verify the repeatability and consistency of the production process.

This second unit has also started to generate test data, and now we have to see how it compares to the first unit.

After carefully calculating on the draft paper, Yu Yuncheng looked delighted.

"The crystal growth structure of the second machine is very reproducible with the first one, and the ratio of improvement to time is basically the same."

The fact that two completely unrelated devices can produce basically consistent results has preliminarily proved that the consistency of this process is still very good, and it can be said that it is a solid step towards mass production.

"Engineer Yu, judging from the data, the highest rate of improvement in the crystal structure occurred in the first five days. And combined with the data from the first machine, after ten days, the degree of change in the crystal structure was relatively small."

Yu Yuncheng smiled widely: "This is good news. The rapid changes in the early stage and the slow changes in the later stage mean that the crystal structure can reach a usable level in the fastest time. This situation is in line with Chief Engineer Gao's judgment that the process can be optimized."

"Engineer Yu, should we wait until the 10-day data of the second machine comes out before we can contact Chief Engineer Gao to discuss matters related to process optimization?"

Yu Yuncheng thought about it carefully and shook his head: "Not enough! How is the third station being renovated?"

"The renovation is almost done. When the second machine was being renovated, we had already prepared a lot of spare parts for the third machine. So it's even faster than the second one, and it can be put into operation within about 5 days." That means the renovation was completed in about 10 days, which is indeed fast.

Upon hearing this, Yu Yuncheng made an arrangement: "Change the sampling plan for the third channel. Starting from the second day, take out one sample every day until the tenth day. The remaining samples will be kept until the original 1th day."

Chief Engineer Gao said that sampling should be done every five days. Now it seems that the purpose of sampling has been achieved. Yu Yuncheng decisively changed the sampling plan of the third station. He wanted to further increase the sampling density and find out what kind of change curve there was in the first ten days.

As for 10 days later, it seems that the change curve is very gentle, and there is no point in encrypting the sampling. If data is needed, just interpolate the data on the curve.

The tester responded, and then reminded Yu Yuncheng with a little worry: "Engineer Yu, will the Third Rolling Mill have any objections to this change?"

This is a very interesting statement, and this experimenter is also a very smart person.

Agree first and then raise questions to show that I listen to you, but I'm also giving you a friendly reminder.

Saying "No. 3 Rolling Mill" instead of "Chief Engineer Gao" means that the subject with the objection is not an individual but a unit, which is also a technique to weaken the subconscious confrontation. Confrontation must be on the same level. People will confront each other, but people and units are another matter.

Yu Yuncheng knew his subordinates' good intentions and said with a smile, "It's okay. You don't know Chief Engineer Gao. He focuses on the general direction. He would definitely welcome such improvements and adjustments in details. In fact, if you don't have this ability, he may not even look up to you. I will communicate with him later."

The experimenter felt relieved after hearing this and went to do his work. In the interaction between big men, he just had to fulfill his responsibilities.

　Two chapters completed.

　　Go research the Easter egg chapter. If it’s not suitable, just post a comment. It seems that you can only post 5 pictures a day. If you post more, the review will be very slow.

　　
　
(End of this chapter)