Chapter 107 Is ESR enough? Not enough for me.
Mr. He and the others turned their heads and saw a tall, handsome young man standing at the door.
Mr. He stood up and stretched out his hand: "Hello, Comrade Gao Zhendong, I am He Jingli from the Prairie Tractor Factory. I work on a project with Mr. Guan, who visited you last time. I am in charge of the guns."
Gao Zhendong remembered that last time he and Mr. Guan of the Prairie Tractor Factory got excited and wanted to talk about the firepower part, but Mr. Guan stopped him and said that they wanted their chief gunner to come in person. listen.
It seems that the armor is very effective, and it completely breaks the defense of the firepower, and then comes to find myself.
Gao Zhendong warmly stretched out his hand and shook it with Mr. He: "Welcome, welcome, Mr. He, Mr. He, Mr. He."
Mr. He introduced the people he brought to Gao Zhendong, who are all responsible As the core backbone of Firepower, it can be seen that he attaches great importance to this communication.
Gao Zhendong shook hands with Mr. He's companions and greeted them one by one. Probably for confidentiality and to avoid suspicion, no one from the computing office followed up here. Gao Zhendong himself sat down next to Mr. He.
"Mr. He, do you have anything to do with me when you come to the capital this time?" Although he probably knew their purpose, Gao Zhendong couldn't just come up and say, "What do you want to ask me?"< br>
Perhaps seeing that Gao Zhendong was too young, Mr. He looked a little embarrassed: "Hi, Gao Gong, the thing is like this, last time our Mr. Guan came back from you, he brought back a lot of good things. , hit me hard on the face several times on the shooting range, haha.”
Mr. He didn't explain everything clearly, but Gao Zhendong knew that he was right.
The person who felt the most about what Mr. Guan brought back was undoubtedly his enemy at work: the firepower guy.
Gao Zhendong also cooperated and showed a bit of embarrassment: "Hey, I just thought about it for nothing, as long as it can be useful."
Young man, you are not kind. Okay, Mr. He is a little bit stuck in his heart, and he’s just making me miserable with his random thoughts? Are you being modest or are you deliberately slapping me in the face?
But there is no way, the dish is the original sin, if you can’t handle it, you just can’t handle it.
Mr. He had no choice but to take the initiative to explain his purpose: "Comrade Zhendong, I heard Mr. Guan say that you also have great ideas in terms of firepower? Last time, due to professional reasons, it was not convenient for him to communicate with you about this matter. This is not , after I cooperated with him to complete the test of the results he brought back, as soon as the results came out, he urged me to come to you."
Gao Zhendong smiled: "Yes, yes, yes. At that time, I thought that since Mr. Guan was here, it was all about the tank, so I could just ask him to convey it. As a result, Mr. Guan paid great attention to confidentiality and professional division of labor, so he did not communicate this matter with Mr. He now. It would be great if you came here in person."
Mr. He and his entourage took out pen and paper, preparing to record the content of the exchange with Gao Zhendong.
Gao Zhendong waved his hand: "Well, Mr. He, because I have training to attend later, and I don't think I have much time now, I just came over to confirm what is going on. You guys are not leaving today. Capital?"
Mr. He was a little embarrassed: "I'm sorry, Comrade Zhendong, it has affected your work. We are going to learn from you. We will definitely not leave if we don't get the scriptures."< br>
Gao Zhendong is very happy. After all, he is currently in the training process and cannot spare much time to communicate with them. However, if he misses this opportunity, then what he has in mind will not be realized in the development of 5DL or even the next generation of tanks. That would be a shame.
Although I can leave the courtyard for a short period of time, if I make a special trip to the Prairie Tractor Factory and work back and forth, I estimate that it will take ten or twenty days, which is too long.
Now that Mr. He and the others are here, it would be great to take the opportunity to pour out everything in their heads. What’s more, I once got a book on tank weapon stabilization and control in a lottery. , isn’t there a channel that can be used?
Since Mr. He won’t leave in a short time, things can be easily arranged.
Gao Zhendong thought for a while and said to Mr. He: "Mr. He, I am not free at the moment, but it is not appropriate to ask you to wait. In this case, I will write you a note, and you can go The technical department of the No. 3 Steel Rolling Plant asked Liang, the invention engineer of the No. 1 Research Office, to ask him to show you some comparative test records of the electroslag remelting refined alloys we have been doing recently. You must be interested in this. Let’s get familiar with each other first. Then you can stay at the guest house in our factory. I’ll come over in the evening and we’ll have a good chat there. What do you think?”
In fact, one of the basic technologies for the take-off of domestic artillery is ESR.
Of course, there are other technologies. Although Gao Zhendong has not developed these other technologies, there is no problem in putting forward the principles. Mr. He and the others are also top technical talents. After getting the principles and ideas, It shouldn't be difficult to get something together.
Hearing that Gao Zhendong’s arrangements were compact and thoughtful, Mr. He also felt that it was very appropriate, so that no one would waste time or delay things.
Seeing that Mr. He agreed to his arrangement, Gao Zhendong took out a pen and paper and wrote a note asking them to go to the third rolling mill.
Taking the note and walking out of the computing office, Mr. He scratched his head, wondering why he had gone back to the third rolling mill.
He said he was here to seek Buddhist scriptures, and it seemed to be true. Although it was not as difficult as nine-nine-eighty-one, it was still a lot of detours. Taking Gao Zhendong's note to the No. 3 Steel Rolling Plant, Mr. He quickly found Liang Fafa through Mr. Chen.
After verifying Gao Zhendong’s license certificate, Liang Fafa took a piece of material from the database.
It does not involve other things, it is just a comparison of various aspects of the same material before and after ESR refining.
Mr. He took the materials and read them carefully by himself. Other people accompanying him were not qualified to read the materials obtained in this way.
Mr. He himself is actually very experienced in the refining of special alloys. Their current gun steel is made using a vacuum induction furnace.
However, when he read ESR’s test comparison records one by one, he couldn’t help but marvel at it and praised it repeatedly.
This made his entourage itchy. What good thing could make Mr. He so excited? However, even so, they knew the rules and didn't ask any more questions.
The refining of special alloys in the third rolling mill adopts the method of vacuum induction furnace (VIM) + electroslag remelting (ESR).
Mr. He himself is familiar with the characteristics of VIM, so when he saw that after ESR refining, on the basis of VIM, ESR materials showed further high purity, low sulfur content, and fewer non-metallic inclusions , smooth surface, uniform and dense crystallization, uniform metallographic structure and chemical composition, etc. He is very familiar with this aspect, and his first reaction is: "I can increase the pressure of the chamber again, Lao Guan, you wait!"
For artillery, the most basic thing is that chamber pressure is everything. Being able to increase chamber pressure safely means range and power. The so-called chicken blood gun means that while increasing chamber pressure, safety and security are not taken into consideration. If you can take into account the issues of reliability and longevity, it won’t be a waste of money, it will be the truth!
Seeing that Mr. He had finished reading the materials, Liang Fangfa took the materials back and took Mr. He to take a look at the ongoing ESR sliding crystallization experiment from a distance. Mr. He drooled when he saw it. , this thing, the aspect ratio of the product can be so large, it is naturally suitable for making gun barrels. As the saying goes, slender and slender, it has strong lethality.
Since Gao Zhendong is away, there is only so much Liang Fafa can do.
Mr. He and others, who had initially seen hope, settled in the guest house of the No. 3 Steel Rolling Plant, waiting for Gao Zhendong anxiously.
At dinner time, they finally waited for Gao Zhendong. Gao Zhendong finished class a little early today and came all the way to treat Mr. He and the others to dinner. After all, they came so far away, and Gao Zhendong still had to follow basic etiquette. Did it.
I invited Mr. He and the others to have a meal in the small canteen. The food was fried by Sha Zhu, and it was considered as a contribution to Sha Zhu’s small lunch box. The canteen was obviously not the right place to talk about these things, which made Mr. He and the others sloppy while eating. Thinking.
After dinner, Gao Zhendong took Mr. He and the others to his office.
A few people sat down, Gao Zhendong poured some water, sat down and asked with a smile: "Mr. He, how do you feel after seeing our electroslag remelting test records today? Can you use them?"
Mr. He slapped his thigh: "This is so useful. With this alone, I can greatly increase the chamber pressure of our guns!"
Gao Zhendong nodded: "Yes, I think so too. Electroslag remelting + single body tube self-tightening technology can increase the bore pressure of your cannon a lot. Not just your cannon, but any cannon. These two things are very important. Valid.”
"A single body tube is self-tightening?"
Mr. He and the others are very familiar with the self-tightening of artillery tubes, but a single body tube is self-tightening? For a while, they couldn't even decide which word "single" or "flesh" meant, so they had to write "danrou's self-control is tight" in their notebooks.
It’s normal that Mr. He and others don’t know this technology now. The world’s earliest single-body tube self-tightening technology appeared on the John Bull L7 105 rifled gun in 1959.
Before this, the barrels of high-pressure guns were basically two-layered, with the inner layer being hard and the outer layer being tough.
The two layers of gun barrels are installed with an interference fit. To put it simply, before installation, the outer diameter of the inner tube is larger than the inner diameter of the outer tube. Once installed, the Can't even pull it apart.
As for how to put it in? As the saying goes, big factories rely on freezing, small factories rely on burning, and roadside stalls rely on banging. Anyway, each has its own tricks.
Earlier, for example, the navy's large-caliber naval guns were even wrapped with steel wire on the outer layer to ensure the strength of the gun barrel.
It looks like a simple gun barrel, but in fact, even in the future, countries that can build it beautifully can only count them on their fingers. As for tank guns, which have more demanding working conditions, then One hand is enough.
Hearing their questions, Gao Zhendong said with a smile: "Yes, a single physical body tube is self-tightening, or it is called a single-layer body tube self-tightening."
(End of Chapter)