Shenhao starts to sign in from the canteen

Chapter 245;

"Put the block of high-purity polycrystalline silicon in the quartz crucible first, and heat it to melt it!" Zhou Jilong pressed the button of the machine, and both Xiong Lao and Chai Lao watched the changes inside through the glass window!
"Old Zhou, what's the temperature?" Xiong Lao looked at the slightly changed high-purity polysilicon crystal in the quartz pot, and then looked at Zhou Jilong who was on the side!
"It's just 1000 degrees Celsius, and it hasn't reached the complete melting point. The temperature continues to rise!"

Soon the temperature reached 1420 degrees Celsius, the melting point of high-purity polycrystalline silicon, and the degree of melting was significantly accelerated. After a while, the polysilicon crystal in the quartz crucible had completely melted!

"You must be careful when making crystal rods, be careful when inserting them, and control the temperature well!"

As time went by, a perfect ingot slowly appeared in front of everyone!

"Old Zhou's ingot has reached 12 inches!" Old Chai looked nervously at the ingot being measured by the machine!

"Achieved! And very uniform, cut off the head and tail, the rest are 12 inches!"

"Okay!" Xiong Lao and the others applauded.

"Let's start the following process! It's not too late to be happy when we finish the finished product!" Xiong Lao's words made Zhou Jilong and Chai Lao instantly quiet, calmed down the excitement in their hearts, and started the next operation!
First, polish the outer diameter, because there will inevitably be some errors during manufacturing, which will cause the outer cylindrical surface of the ingot to be uneven, so the outer diameter must be trimmed and ground to make the size and shape errors less than the allowable deviation!

Due to the manufacturing process, Zhou Jilong simply polished it!

Then, after cutting, grinding, etching, blemish removal, polishing, cleaning and many other processes, the exquisite wafer of 20 yuan appeared in front of several people!
"Old...Old Zhou! You... you should check quickly, whether this... this wafer meets the specified technical indicators such as size, shape, surface finish, flatness, etc., you must check it carefully!" Chai Lao looked in front of him. Wafers, I stuttered a bit when I spoke for a while!
"Be sure to check it carefully, and we will have to think about the process later. It took us more than an hour to make 20 yuan. If we want to achieve mass production, at our current speed, it is completely wishful thinking! "

"Well, don't worry! I'll test it right away!" After Zhou Jilong finished speaking, he took out the wafer and inspected it carefully.

Soon Zhou Jilong said excitedly: "There is no problem at all, I believe it has definitely reached a world-class level!"

"Really!" Several voices rang out at the same time!
"En!" Zhou Jilong nodded heavily!
"Okay, we are manufacturing a few times to see if the yield rate of the wafer is always so high!"

"Okay!" Zhou Jilong carefully put the wafer away, and continued to operate, and soon the production line started to operate again, with the set parameters, this time faster!

The second batch was produced in less than 40 minutes, but Zhou Jilong's expression was not very good!
"What's the matter? Old Zhou, what happened?"

"It's a bit irregular, maybe I didn't pay attention when I polished it just now, I've been here before!"

Several people have been busy until 8 o'clock in the evening, everyone's face is tired, looking at the wafers on the side, there are very few that can compare with the first batch!
"Three, it's not too early, let's continue to study tomorrow, not to mention that my current success rate is already very high, as long as the good product rate is raised! If you are tired by then, the boss will definitely let me It's peeling off!" Lin Wu looked at the faces of several people, and couldn't help but pull Zhou Chao out as a shield!
Zhou Jilong also nodded when he heard the words and said: "That's right, rest first. Tomorrow, we will bring a few subordinates to study together. Then we will relax a bit. What's more, the three cobblers are as good as Zhuge Liang. Maybe tomorrow we can solve it!"

When Mr. Xiong and Mr. Chai heard their words, they nodded, and then they tidied up and prepared to leave the workshop!

"Old Zhou, I'm going to show the first batch of wafers to the boss!" Lin Wu's words stopped the people who had left!
"Okay! Take it now and show the boss the results of our research!"

Lin Wu was also polite, wearing white gloves, carefully put down the wafer with both hands, packed it in anti-friction bags, and followed everyone out of the factory!
"Wang Feng, tell Dawu tonight, the factory will send more manpower, pay attention to safety!"

"Understood!"

After Lin Wu, Zhou Jilong and others greeted each other, they carefully took the wafer and got into the car. They also walked slowly towards the research institute!

And Lin Wu didn't drive fast all the way, he was afraid that if he made a mistake on the road and broke the wafer all of a sudden, then he would be guilty of a serious crime!

It was almost 10 o'clock in the evening when Lin Wu returned to the hotel, and Zhou Chao was lying on the bed chatting with Jiang Li via video!

"Dong dong dong" the door of the bedroom was knocked, and Zhou Chao, who was chatting, sat up all of a sudden!

Immediately afterwards, Lin Wu's voice sounded, "Boss, are you asleep?"

"What's up?"

"Well, I have something to report!"

"Wait a minute!" Zhou Chao kissed Jiang Li twice after finishing speaking, hung up the matter, lifted the quilt and sat up!

"Crack!" The bedroom door was opened, Zhou Chao came out and saw the round thing in Lin Wu's hand!
"This... is this a wafer?"

"Yes, the boss, Zhou Jilong and the others have already researched it, but the current yield rate is not very good, and they will continue to experiment tomorrow!"

"That's right, it looks like mass production won't be long! Are there still some problems with the craftsmanship?"

"Well, the yield rate is not high, only the first batch is slightly better!"

"It's okay, just do a few more experiments! It's getting late, go back and rest early!" After Lin Wu handed the wafer in his hand to Zhou Chao, he turned and went back to his room.

After Zhou Chao played with the wafer for a while, he put it back in the bag!
Back in the room, Zhou Chao's heart was already alive. As long as the wafer production is successful, it means that there will be a steady stream of cash flow, and he can also try to research chips!
Even if he can't research it, there will definitely be related items related to chips in his follow-up check-in, so Zhou Chao is not flustered at all, just lying on the bed thinking about it and falling asleep!
Early the next morning, Zhou Chao got up, carefully packed the wafer in a handbag, and Lin Wu also sat on the sofa early!
"Boss, you're up!"

"Well, take the key, let's go out!" Zhou Chao said and walked out!
"Boss, are we going to the fab?"

"No, shall we go somewhere else?"

"Anywhere else? There?"

"The municipal committee compound!"

(End of this chapter)