The ups and downs of life in the Siheyuan

Chapter 251 Branch Factory

Time soon entered late December.

On this day, Li Yuan had just started designing a special chip for automatic control of vacuum furnaces when his work was interrupted by military representative Tong Zhiyuan.

"Xiao Li, follow me!"

"Wait a minute, Colonel Tong, you have to explain to me clearly what you are doing. I will leave such a big stall behind as soon as I say!"

"Oh, look at how anxious I am.

We have built a dust-free workshop at Jiuxianqiao 700 Factory, which mainly produces 4-inch wafers. . . ".

"Wait a minute, didn't you say it was built in the mountainous area of Mianyang?"

“Through the debate, everyone still felt that it would be more appropriate to place it in Kyoto.

The 700 factory is located in the northeastern corner, so a special road can be built and it can be better protected.

The dust-free workshop is directly separated from other factory areas and has a dedicated north door.

All wafers produced are supplied to the military and will not be used for civilian products for the time being.

In this way, security can be guaranteed and there is no need to worry about leaks for the time being.

Of course, Mianyang will also build a larger wafer production plant in the future, but there is no rush now."

"Then what do you want from me?"

"Please help with the acceptance check! Except for you, we don't understand.

Moreover, the equipment installation also requires you to do it yourself to ensure the first-time success rate.”

"Wait a minute, arrange the work first, and bring the sculptor with you."

"You look at the arrangements."

Ten minutes later, an ordinary GAZ car drove away from the substation.

In the Jiuxianqiao factory area, there is a factory area covering an area of 50 acres in the northeast corner, which is filled with densely packed factory buildings.

The outer perimeter is a 2-meter-high red brick wall.

A branch factory is separated to the north. Compared with the main factory area, the factory buildings here are low, with the highest being only 2 floors.

There is a factory building more than 30 meters long inside, and against the north wall is a two-story red brick building.

The first floor of the red brick building is the security department, and the second floor is the office area.

The factory building is just a red brick building with ordinary cement columns and beams, and it looks ordinary from the outside.

Entering from the east gate, the layout is similar to the underground laboratory.

However, there are two dressing rooms after entering the door, men on the left and women on the right.

The first thing you enter is a corridor. On the right hand side are two workshops, namely the cutting and polishing workshops.

There are also two workshops on the left hand side, namely the single crystal rod preparation workshop and the oxidation workshop.

The person in charge of the branch factory introduced the methods of dust removal, heat preservation, and moisturizing in the dust-free workshop, and then led everyone into the workshops one by one.

After a round of testing, several people stood in the corridor. Representative Tong asked eagerly: "How is it? Does it meet the requirements?"

Li Yuan pondered for a moment, "After all, this is a wafer production workshop, and the conditions are still not comparable to those in the laboratory.

But there is no problem in producing qualified wafers.

The only thing to consider is to strengthen the cleaning of debris to avoid becoming a source of pollution."

The branch director was obviously relieved.

When they first met, he saw that Li Yuan was young and didn't take it seriously.

But when he learned that the young man in front of him was the main designer of a complete set of wafer production equipment, he stopped being contemptuous.

But they are still skeptical about the claim that their dust-free workshop is not as good as their laboratory.

Next, comes assembly.

With the first experience, reassembly will be much faster.

This time Li Yuan became the main force and Xiao Gong became the helper.

Seeing his skillful movements and his ability to lift weights with ease, the director of the branch factory became even more confused.

"Representative Tong, what does this kid do? Why does he seem to know everything?"

Tong Zhiyuan glanced at him and said, "As long as you know how powerful he is, it's best not to inquire about his affairs."

"so serious?!"

"That's you, and everyone else, I don't even bother to talk to him."

"That's right. A 4-inch wafer production line suddenly appeared in China. I was shocked when I first heard about it. It turned out that they were the ones who created it."

Until now, in his heart, he still regards Li Yuan as a participant.

For two whole days, Representative Tong stayed with the workshop and acted as an orderly.

Li and Yuan also lived and ate in the factory. When they were tired, they would go back to the office building and relax for a while.

If it weren't for taking care of Xiao Gong, Li Yuan could have stayed without rest for 2 days and 2 nights.

On the morning of the third day of the test run, there was no opening ceremony, only Li Yuan, Xiao Gong, representative Tong and 10 apprentices.

"Which of you is the vacuum furnace controller?"

"Me", a female voice came from the team.

The person who raised her hand to speak was a girl who was less than 1 meters tall. Because they were all wearing dustproof clothing, she couldn't see clearly her beauty or ugliness.

"Recite the operation manual again."

"First check whether the feed inlet is sealed...

. . . . . .

Pay attention to the vacuum degree, if it is too low. . .

. . . . . .

Final shutdown".

"Okay, passed, I'll put it into practice later."

"Ah!" The girl covered her mask with her gloves, obviously very surprised.

"Who is responsible for pulling the single crystal rod?"

"I", a majestic gay man stepped forward and stood at attention with a snap.

He looked like he had been a soldier.

"Recite the operation manual again."

"First clean the crucible and inject high-purity silicon powder...

. . . . . .

Pay attention to whether the vacuum degree meets the requirements. . .

. . . . . .

Pay attention to the color of the silicone liquid surface. . .

. . . . . .

Finally wait for natural cooling."

"Very good, let's do it later."

"Next person..."

. . . . . .

Half an hour later, the four main processes of single crystal rod preparation, cutting, polishing and oxidation were assessed.

Some cognitive deficiencies were corrected along the way.

"Okay, start adding ingredients," Li Yuan ordered, and everyone got busy.

The director of the branch factory came over and said, "Comrade Li, can you demonstrate it first and then let them get started?"

Member Li smiled and said, "Don't worry, they are not fragile objects and cannot be broken.

Let them jump right in, make mistakes, and remember them.

I have always believed that growth experience comes from failure.

In the beginning, it's okay to make mistakes. Compared to their rapid growth, the waste of materials is insignificant."

The director of the branch factory came from the war period, and he has never seen waste.

Seeing Li Yuan's insistence, he walked to Representative Tong again.

Tell him about his concerns and suggestions.

"What does Xiao Li mean?"

"Let them get started directly, but how can this be done? Who can bear the consequences if something goes wrong?"

Representative Tong glanced at him and said, "He is an expert, just listen to him."

At Li Yuan's insistence, they started their first practical operation.

Li Yuan stood by their side and gave them a certain amount of courage.

Li Yuan discovered a very interesting phenomenon.

For each process, there are two of them. One person keeps saying the contents of the operating procedures, and the other records his operation process.

The feeding went very smoothly and there was not a single mistake.

Li Yuan gave his affirmation in time.

Then vacuuming was also very smooth.

But when pulling the single crystal rod, a problem occurred.

Because the parts of each lifting vacuum furnace have deviations, but they are all within the error.

However, these deviations will affect the speed of lifting and rotation.

Therefore, each one needs to be recalibrated and maintained midway.

It is impossible for their laboratory to send people here every time, so they must train people who know how to adjust.

"Relax, observe the color of the liquid surface, and pay attention to the transition color of the single crystal rod to the liquid surface.

That’s right, it’s this color.”

. . . . . .

"Oh, it's still a bit fast. Relax and try again."