Chapter 81 Key Topics
"The headquarters is going to experiment with seamless circuits. I know you have a lot of brains and many ideas. This time, you should take the initiative and sort out your ideas and give them to me.

If this is done well, I can take whatever tea leaves I have here. "

Yan Jiecheng laughed and said, "Old Luo, then I'll be impolite, I must have emptied it for you."

Yan Jiecheng was thinking about the seamless line.

Literally, it is a line without seams. In a more professional way, it is a line that welds or glues standard length rails to grow rails.

Generally, railway lines are connected by steel rails one by one. When people sit on the train and pass the rail joints, they will make a rattling sound.

This seamless line has a very core problem, which is the problem of thermal expansion and cold contraction.

If it is not handled well, it will be broken in winter and the track will rise in summer.

Yan Xiecheng has a big head, so there is only such a problem. From transportation to welding, it is difficult for today's country.

Only then did I realize that I had been fooled by the old man again, and said: "Oh, your tea is not good."

"Haha, you kid think so."

Luo Gong took a sip of tea, looked at Yan Jiecheng and said, "I heard that you, boy, have recently been running to Jiaotong University, hustling around other people's libraries every day."

"Hey, look at what you said, how can you say that the matter of borrowing books is a rush." ​​Yan Jiecheng said unwillingly.

Luo Gong looked at him with a smile and said, "How did I hear that the Jiaotong University library won't let you in now, and guarding against you is like guarding against thieves."

Yan Jiecheng said with a look of contempt: "Hey, if you want to talk about such a big university, it's too immodest for a scholar.

I just took a few books from them and talked about it everywhere. "

"How many books do you have? They have a collection of more than 400 books. Have you read them all?"

Yan Jie was also a little embarrassed to see Luo Gong puncture his prejudice.

It turned out that after moving to the college to work, Yan Jiecheng went to Jiaotong University to borrow books when he was free.

But with his abnormal memory, he can read a book in two days at most.

So I simply borrowed a few more each time, and later found that their college did not have a library.

With a twist of his brain, Yan Jiecheng borrowed more than 400 books from Jiaotong University at one time.

Jiaotong University also enthusiastically asked the students to help move the books.

When the book was in Yan Jiecheng's hands, he found an empty house in the Technical College and built a small library.

Yan Jiecheng also approached Dean Yan, and after discussing for a while, the two made a creepy smile.

Later, they sent an official letter to Jiaotong University, highly praising Jiaotong University for its selfless spirit of helping others.

He said that the technical college received the books donated by Jiaotong University, and the teachers and students of the school were very happy and grateful.

Seeing Luo Gong's contemptuous expression, Yan Xiecheng immediately became a little more confident.

Said: "It's not that we didn't thank them. Our college even issued them a receipt and wrote a letter of thanks."

"Hey, Luo Gong is not me talking about you, we are a family.

Why do you always speak for outsiders? "

Luo Gong carefully looked at Yan Jiecheng's face, and said expressionlessly: "I have been the principal of Jiaotong University for ten years, and my family is there."

Then he said, "I asked Jiaotong University to make a sign and put it up at the entrance of the library, saying that Yan Jiecheng is not allowed to enter."

Yan Jiecheng opened his mouth and said, "Old Luo, this structure is too small. We are a dignified university, we can't be like those devils, why are Yan Jiecheng and dogs not allowed to enter, such a childish thing."

"Well, this is not bad, I will ask them to change it later."

Yan Jiecheng: ...

"You, don't go to Huo Huo and them recently. I heard that they are looking for you recently. Don't be caught by them as a donkey."

Yan Jiecheng smiled, how is it possible.

Ever since he became obsessed with other people's books, he never went to Jiaotong University again.

This point, he was still a little bit forced.

It is said that this matter was brought to Minister Teng.

According to Dean Yan, Minister Teng severely criticized Yan Xiecheng's robbery in front of Principal Mao.

After Principal Mao left, Minister Teng said to the people around him: This young man is good, don't wait or rely on him.It is our tradition to do it yourself and have enough food and clothing.

After talking with Luo Gong for a while, seeing that it was getting late, Yan Jiecheng took his leave and left.

On the second day, Yan Jiecheng asked about the seamless line at school, but no one knew about it.

In the eyes of Lao Xie and the others, the steel rails are just connected one by one, and they have been used well all the time, so why weld them together.

Seeing this, Yan Jiecheng also knows that there are not many people who understand seamless lines in China, and this task seems to require a lot of effort on his own.

Call Chen Hanliang and ask him to help. After all, he is a high-achieving student at Jiaotong University, so it's okay to be a helper.

"Han Liang, I have an important project here, and I need your help to complete it." Poured a glass of water for the young man, Yan Jiecheng said in a gentle voice.

Seeing this, Chen Hanliang was surprised, what important subjects could their technical school have?
Yan Jiecheng knew what he was thinking just by looking at his face, and explained: "This subject was arranged by Committee Luo of the Faculty.

It belongs to the key topic of our country's railway transportation.

It is the research and implementation of the seamless line I mentioned earlier. "

Seeing this, Chen Hanliang said: "Director, but, but I don't understand this at all. This is the first time I've heard of it."

Yan Jiecheng smiled and said, "It's okay, Han Liang, I understand.

Your task is to contact the rolling mill and ask them about the expansion coefficient of the rail.

Just calculate, if we use 1000 meters as the unit.

When it is laid at what temperature, its shrinkage is the same as its elongation. "

"The other thing is to calculate the amount of expansion and contraction of the rail as it changes with temperature.

And the change of the temperature stress inside the rail. "

Chen Hanliang felt that Yan Jiecheng had given him a lot of attention, so he agreed in a daze.

Yan Jiecheng thought that the workload was not small, and it still had to rely on the efforts of everyone in the department.

Then he said to Chen Hanliang: "Han Liang, please tell everyone.

Just say that everyone should not leave after get off work today. Let me tell you about seamless lines. As professionals, we still need to understand.

It can also be regarded as a professional technical lecture given to them by my director. "

After Chen Hanliang left.

Yan Jiecheng took out a pen and began to write in the notebook.

After all, I will give lectures to everyone later, and they are all professionals.You still have to prepare, otherwise it will be bad if you make a joke.

He thought for a while and wrote a few headlines.

Advantages and disadvantages of seamless lines.

Assortment of seamless lines.

Construction of seamless lines.

Stress relief for seamless lines.

Maintenance of seamless lines.

Everyone in the office heard Chen Hanliang's words.There were heated discussions.

After all, their college has been established for a short time and has not held technical lectures yet.

Yan Jiecheng also held the first regular meeting in the hospital
Even Dean Yan heard about this and said that he would also participate.

(End of this chapter)

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