Chapter 259 Good News and Bad News

Chen Yuehong was preparing dinner for tonight, and Wan Yueqin wanted to help but was rejected.

The couple are both working. Although they cannot compare with Gao Zhendong and Wang Dezhuo, if they really want to treat guests, the food can still be pretty good.

Chen Yuehong is from Northeast China, so the food she makes is very Northeastern in style. It's all cooked in one pot, and this is the only main dish. Don't underestimate the other dishes, as there is a lot more to it.

There is a big iron pot with golden pancakes stuck on the edge. Potatoes, beans, meat and other things are stewed in the pot. The soup has been absorbed and is slightly sticky. It is bubbling and exuding an enticing aroma.

Gao Zhendong sniffed and said with a smile: "Sister-in-law, this cooking skill is authentic!"

Chen Yuehong stroked her hair with her little finger and said, "As long as Platoon Leader Gao likes it, please don't leave any for me today."

Xie Jianye's wife has this authentic Northeastern craft. She can bring the things sent by the Carbon Research Institute's section worker over some other day and ask her sister-in-law to make them, so that she can have a few more meals together. But there is no need to bring them out today, as that would be disrespectful to Old Xie.

It's okay to give out something to contribute before others start cooking. But it's inappropriate to give out something after others have already cooked their dishes. What's wrong? Do you look down on my family?

Several people sat down and congratulated those who should be congratulated and thanked those who should be thanked.

Xie Jianye and his wife were extremely grateful to Gao Zhendong, as he had solved so many of their problems. So Gao Zhendong came empty-handed instead of bringing anything with him, as he was afraid that Mr. Xie would be under a lot of psychological pressure.

Twenty industrial tickets are enough as gifts, any more would be unsatisfactory.

The three men drank happily, and even Chen Yuehong picked up her glass and drank a few drinks with them. Her personality was quite different from Wan Yueqin's. She was a girl from Northeast China, generous and magnanimous.

The comrades who fought together back then have now established themselves in the capital.
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At the Northeast Carbon Research Institute, they finally managed to burn out high-performance graphite materials. They also made graphite backing from the tungsten-molybdenum alloy sent by Gao Zhendong and tested them together.

The Vice President of the Carbon Research Institute and the guests were waiting for the test results in the laboratory.

This guest is also one of the end users of high-performance graphite materials. The original copper-infiltrated silicon-infiltrated graphite has poor mechanical conditions under long-term working conditions and its anti-ablation performance drops sharply. It cannot be used under their working conditions that require tens of seconds, not to mention that it may require longer working time.

Therefore, this time, all the high-performance graphite materials were finally burned out, and they were also anxious to come and see the test results to see if they could be used this time. If there were any problems, they could analyze them together.

As the rocket engine roared again and again, Duan Gong also brought over the test data.

"How is it?" Looking at Duan Gong's uncertain face, the vice president was a little unsure.

"We have good news and bad news about our graphite materials. Dean, which one do you want to hear first?"

As soon as he said this, the vice president realized that something was wrong: "Listen to the good news first."

At least it can help you maintain a good mood a little longer.

"Under X MPa pressure and XXXX combustion chamber temperature, the average ablation rate for 60 seconds of operation has met the standard, and several inspection batches have met the standard. The performance is 50% to 70% higher than that of the original silicon-infiltrated copper-infiltrated materials, except for one. In addition, the other mechanical properties are also good and have met the expected requirements."

This is really good news, as ablation performance accounts for a significant proportion in the evaluation of the throat liner's working indicators.

And the mechanical properties are also good, so there is basically no problem.

"Aren't they all good? Then what about the remaining one?" The vice president felt relieved. There must be some defect. This should be the bad news he mentioned. However, if there is one defect in a batch, it shouldn't be a big problem.

"It broke. It was completely shattered and sprayed out. So there is no ablation data."

The vice president was a little unable to laugh, and the guest also realized the seriousness of the problem. If one was completely broken, then the situation of the others that were not broken would not be optimistic either.

The guest asked anxiously, "What is the bad news?"

"There are cracks all over them. The situation is very serious. There are more than two rings in each." Engineer Duan said with a wry smile.

This is really bad news, which means that the material has poor resistance to thermal shock. One ring mark is allowed, but several inspection batches have more than two, and some even break. This means there is a problem at the root.

Engineer Duan was a little frustrated, but his mood was not too bad. Since he consulted Gao Zhendong during the Chinese New Year, he has effectively solved the problem of cracking after pressing and successfully fired a finished high-performance graphite throat liner, which at least has good ablation and mechanical properties.

Only about two months have passed, and most of the indicators have been achieved, which is actually very good.

The vice president also understood this matter, so he didn't pay too much attention to it. If the customer wasn't in a hurry, the progress would actually be quite good, so he asked another question, which was considered to be a matter of loyalty: "What about the batch in Beijing?"

Speaking of this, Duan Gong became excited: "Deputy Dean, you know what, the people he came from are different, his batch is all very good." The deputy dean also became interested: "Tell me about it."

"Needless to say, the mechanical properties are good. It is a metal material with tens of times the tensile strength of our graphite. The average ablation rate is similar to that of our graphite material, 0.0xx mm/s, but the required working pressure is 20% higher than ours, the combustion chamber temperature is similar, and the working time is 120 seconds. After the test, the appearance conditions fully meet the standards."

The customer was surprised: "What? Working time is 120 seconds, and the pressure is 20% higher?"

The increase of these two conditions has more than a simple linear relationship with the performance indicators.

This made him think a little, and he looked at the vice president: "President, do you think we can do this?"

He knew that this was a commissioned test project of the Carbon Research Institute. It might be okay for him to hear the test results, but it might not be able to tell him other information. However, how would he know if he didn't try?

The vice president shook his head and said, "You can't use this. Although the other properties of this thing are very good, it is made of metal, and its density is about 8 to 10 times greater than that of graphite. When the ablation rate is similar, this is used on medium and large scales, and the weight does not meet your requirements."

The guest smiled and said, "Dean, you misunderstood. We don't use it for this. I can't tell you the details, but the indicators I just heard are very useful to us."

The vice president suddenly realized that the other party was also a large scientific research institute with more than one ongoing projects.

The vice president looked at Duan Gong and said, "Old Duan, should we send something to them?"

Gao Zhendong's single crystal furnace has some graphite components that have been worn out due to long-term testing, so they need to be replenished here to carry out the final decisive test. At the same time, the remaining finished products and test results of this test should also be sent over.

Seeing Duan Gong nod, the vice president said, "You can send him there in person to see if he can solve our problems and theirs. I always feel that he didn't finish his words last time because it was inconvenient to ask about our other things."

This is no one's fault. There are regulations in place, and Gao Zhendong can only solve what the Carbon Research Institute says, and the Carbon Research Institute can only ask questions based on what problems have arisen.

"Well, okay." Duan Gong agreed readily. It was not shabby after all, for the sake of work.

The vice president turned to the guest and said, "We have to consult the National Defense Committee before we can decide whether to disclose the relevant information. If the National Defense Committee has no problem with this and you are interested, you can go with Lao Duan."

The guest also listened to the vice president's words and understood that both your problems and our problems can be solved by finding this person. He is a damn all-rounder.

No wonder you even have to ask the Defense Work Committee for permission before revealing relevant information. Confidentiality is of no small importance.

At this time, Gao Zhendong had no idea that his idea of ​​holding an umbrella for the three armies had already opened up a window for him by chance. He was now explaining to the people of the Beijing Steel Plant about the three types of steel needed by Beijing University of Technology.

The people from the Beijing Iron and Steel Plant were holding the three documents, feeling a little amused and helpless. No wonder the cooperation plan between the plant and the Third Rolling Mill was like an unequal treaty. The Third Rolling Mill took a dominant position without spending a penny.

It’s really because they have capable people.

Looking at the three very detailed documents in hand, the refining technology and heat treatment process of these three steels are basically explained clearly. Not to mention a large factory like Beijing Steel Plant, any factory with suitable equipment can make them according to them.

Although it had not been done yet, the people at the Beijing Steel Plant had the materials in hand and had no doubt about the possibility of success.

They even suspected that the experiment had already been done, but it was only brought out as a new project to take care of the Beijing Steel Plant.

The Third Rolling Mill is so righteous, it's so heartwarming.

Gao Zhendong said about the time requirement: "There is no need to rush for these three types of steel. Basically, they can be produced in the first half to nine months. There is no need to develop them all at the same time. Comrades who need them may not be able to use them until half a year later."

Zheng Liangshu is the team leader. Although his skills are not very advanced, he knows that this time he will succeed when he sees the people in his factory.

"What about the order? Are there any requirements?" Since we don't have to do them all at the same time, we can just do them one by one, but the order may be a little particular.

The order set by Gao Zhendong is bayonet, bolt, and barrel.

There are materials available now to make bolts and barrels, and these two are icing on the cake. The bayonet is different, it is a timely help. The sooner it comes out, the sooner people from Beijing University of Technology can design a good multifunctional bayonet based on it, and the sooner Gao Zhendong can get his opinions.

Since the size and weight of the bolt are limited, it would be better if its materials came out earlier, so that there is more time to polish its specific design.

The volume limitation is easy to understand. The reason why the weight of the bolt is also limited is because the weight of the bolt is related to indicators such as the firing rate of the gun.

As for the barrel, it doesn't matter. Even if the material performance is not up to standard in the early stage, then use a heavy barrel and thicken it, and then replace it later. There is no need to consider too much about the heat dissipation of squad weapons, and the light machine gun is going to use a quick-detach barrel, so there is no need to worry about the difference in heat dissipation performance between the heavy barrel and the ordinary barrel.

(End of this chapter)