The ups and downs of life in the Siheyuan

Laboratory 412 has now been renovated, without painting, and there is no pollution in the room.

So let it dry and you can settle in.

Today there are two people in white coats talking in the laboratory.

In addition to the white coat, he also wore a white hat on his head and black shoe covers on his feet.

"Xiao Li, how are you? Is there any progress?"

The person asking the question was Director Li of the Motivation Department.

Since the Department of Computer Science was featured in the national newspaper, school leaders and department heads also received exclusive interviews from Kyoto Science and Technology News.

Director Li's heart also became warm.

Putting all the projects together, Gas Turbine is still digesting Big Brother's drawings and has made little progress.

Now he places his hopes on Li Yuan.

After all, the design of the brushless DC motor was completed independently by Li Yuan, and the results were shared by the Department of Motivation and Computer Science.

He is the person in charge of this project. Although it is just a cover, he feels that it will be him who will show his face.

If this project succeeds, it will be another world-first project.

Since learning about this project, he has found some connections and has learned enough about dynamic balancing instruments.

Especially an alumnus from East Germany. After contacting them by telegram, they learned that piezoelectric ceramics are still in the laboratory stage and have not been put into practical use.

If Li Yuan can successfully develop a dynamic balancing instrument, piezoelectric ceramics will be the first case in the world to be applied to actual products.

Director Li has established a formal dynamic balancing instrument project team.

He personally serves as the team leader, and Li Yuan is the deputy team leader.

This combination is very strange. There is nothing wrong with the team leader, but if the deputy team leader lets the outside world know, they will probably think that Huaqing University is joking.

A sophomore student is actually the deputy team leader of the project. This combination can be said to be unique.

The demand document for the dynamic balancing instrument was written by Li Yuan. Of course, the external preparer was Li Zhengyu, and Director Li of the Motivation Department.

Director Li is now arranging teachers and students to perfect the plan.

This development model was also proposed by Li Yuan.

When Li Yuan submitted the project plan, Director Li was shocked.

Formal and perfect writing and analysis opened his eyes.

Divide research and development into five stages: concept, requirements, design, implementation, and testing.

A rough plan is already in place in the concept stage, and functions and interfaces are refined in the requirements stage.

The documents for these two stages were written by Li Yuan himself, and now the project team is conducting detailed design based on the information for these two stages.

Their first job is to refine the plan based on needs.

The photoelectric module uses the paper tape reading module of the 911 computer.

A progressive grating is installed on the rotating body, and the photoelectric module can identify where there is a large displacement.

Then the unbalanced state is identified through the vibration of the shaft end of the lifting rotating body.

Therefore, it is now necessary to develop piezoelectric ceramics that are practical and have stable parameters as soon as possible.

There is corresponding knowledge in the "Material Chemistry" skill book.

By studying the skill book, Li Yuan also mastered the preparation formula and method.

This saves him a lot of experimental time.

Now Li Yuan is firing ceramics on a special electric heating crucible.

This is already the 10th firing in the past few days.

There were many reasons for previous failures, such as air pollution, unreasonable ratios, temperature control errors, heating processes, etc.

Today is the 11th time.

Director Li was lying on the workbench, staring at the crucible, curiously wanting to know the progress of the project.

Li Yuan focused all his attention on the crucible, ready to adjust at any time.

“It’s hard to say, but the previous failures have basically stepped on all the pitfalls that should be encountered.

This one has a high chance of success.”

"Great"

"Director, put on your mask," Li Yuan looked up at Director Li and said.

Director Li hurriedly pulled the mask to the bridge of his nose.

"Li Yuan, I admire you very much for this. Just for a moment, I felt a little out of breath, but you are good, you stayed here all day long."

"If you have pity on me, please apply for an air conditioner."

The earliest installation of air conditioning in China was in 1924. The Children's Palace of China Welfare Association in Shanghai was the first commercial building to install air conditioning.

Nowadays, some special institutions or hotels that receive foreign guests also have air conditioners installed.

When Director Li heard Li Yuan's words, he laughed and said, "I have a meeting, so I'll leave now. You're busy."

After running away Director Li, Li Yuan took out a small fan and started to purify the air.

This little thing really plays a big role. It can create a dust-free space in 10 minutes.

Li Yuannianli kept paying attention to the ceramic pieces in the crucible.

After an hour, turn off the power and wait for the crucible to cool down naturally.

More than three hours later, Li Yuan pried open the crucible lid, and a piece of light yellow ceramic the size of a business card appeared inside.

From the looks of it, the chances of success this time are quite high.

He picked up the ceramic piece, which was only 3mm thick and had a slightly uneven surface.

Then use a small wire saw mixed with diamond to cut the ceramic piece into 5*5mm pieces.

Wrapped in silk cloth, we came to another building 208, which is a dedicated laboratory for dynamic balancers.

The area is 150 square meters, divided into two spaces by filing cabinets.

A compartment of about 100 square meters is used for mechanical structure design, assembly, debugging, and testing.

The team was led by a teacher named Zheng Jun, who was busy in the laboratory with 10 students.

"Teacher Zheng, you are busy." Li Yuan took the initiative to greet Teacher Zheng when he entered the room.

He smiled and nodded to the senior brothers and sisters who looked up at him.

"Xiao Li, have you prepared the ceramic pieces again? Do you want to grind them?"

"Yes," he said and walked into the cubicle with a smile.

In the smallest cubicle, two students were practicing grinding on the grinder.

Hearing the noise, they all stood up and looked at Li Yuan.

"Teacher Li, are you here?" they both greeted.

They are the assistants assigned to him by Director Li, a man and a woman.

The man's name is Xiao Jian, 22 years old, a junior in the motivation department.

The woman's name is Wang Jinfang, 20 years old, a junior in the motivation department, and she is actually the same age as Li Yuan.

Xiao Jian is from Jinmen. His family conditions appear to be average, but he has the arrogance of a cultured person.

Wang Jinfang comes from rural Yanzhao. Her family conditions are not very good. Her clothes are shabby and ill-fitting, but they are clean and refreshing.

Although Li Yuan was one level lower than them, his achievements impressed all the senior brothers and sisters who were learning knowledge.

Especially the two of them, after half a month of contact, they were completely conquered by Li Yuan's knowledge.

Xiao Jian, who has always been arrogant, has now become Li Yuan's little fan.

Wang Jinfang is not good at expressing himself, but he has made the most progress among the two.

Whether it is welding, grinding, or building circuits, it is much better than Xiao Jian.

"I have 8 new ceramic pieces here. Which of you will come?"

"Come on, Xiao Wang, I can't control my strength and it's easy to get worn out," Xiao Jian said frankly.

Wang Jinfang has begun to clean the grinder silently.

Rinse the grinding table with clean water over and over again.

Li Yuan smiled and said, "I have a feeling that it will work this time, so I will do the first one myself."

"Great, we finally see the light of day," Xiao Jian whispered happily.

"Teacher, that's all right," Wang Jinfang shyly stepped aside.

Li Yuan smiled, walked to the grinder, started the machine, and started grinding.

"You should be careful not to use too much force, otherwise it will break easily.

It cannot be too loose, otherwise the ceramic piece will come out of control.

There is no way around it, it takes a long time of practice to master the feel.

I have already talked to you about the uses of piezoelectric ceramics. In the future, you will have to grind ceramic sheets of different sizes according to your needs."