Technology company, I will become the light of China!

Chapter 120: Equipment is not enough, technology is needed to make up for it

"The only thing that is in direct contact with the silicon solution is the wall of the quartz crucible. Now it involves a question, whether to destroy the machine and check whether there is any problem with the wall of the quartz crucible."

When the silicon-silica solution in the quartz crucible was poured out and the temperature in the furnace slowly dropped, Han Ming looked at Chen Xing and asked.

Do you want to smash it?

Take a small piece out and test it?
Chen Xing is not an indecisive person. After talking to Yu Yuehui on the phone, he was sure that there was a problem with the equipment.

Assembling parallel imports.

Isn’t it normal to have problems?
Moreover, he is more willing to believe in golden quality talents than machines.

"Smash."

Chen Xing said lightly.

When the crucible furnace had completely cooled down and it was confirmed that the power had been cut off, a blue-quality talent was hoisted into the furnace and smashed off half a piece of quartz at the top.

He then obtained samples from the middle and bottom of the crucible.

After getting the quartz testing sample, Han Ming immediately took it for testing.

A few hours later, he walked into the operation workshop with a dark face, looked at Chen Xing and said: "It's really a problem with the quartz crucible. The quartz is doped with a variety of substances. Once we continue to heat it for several hours, the impurities will slowly blend into the silicon solution. , affecting final cost purity.”

"Sure enough, it's an equipment problem."

Chen Xing murmured to himself.

At present, the quartz crucible is damaged. Even if it is not damaged, he does not dare to use it again. He plans to contact Yu Yuehui to come and have a look.

Although it is clear that he did not do it, the equipment needs repair, and Shanghai Silicon Group should have maintenance engineers.

Just when he wanted to contact Yu Yuehui, Yang Lie, a talented person in the production of large silicon rods, spoke: "The impact of impurities should not be that big. There may be other problems with the several fractures of the seed crystal."

When Chen Xing heard this, he felt more and more that this batch of equipment was unreliable. He looked at Yang Lie and said, "Check it according to your ideas. Don't worry about the equipment being damaged."

"I see."

Since it was suspected to be an equipment problem, Yang Lie already had a suspicion.

The pulling speed of 3 mm is correct, because 4 mm can only pull out a 10-inch monocrystalline silicon rod, so 3 mm is absolutely correct!

If there is no error at 3 millimeters per minute, there is only one possibility!
There was a problem with the lifting ring and the equipment's fixed speed function. The equipment could not stabilize the 3 mm lifting, causing the silicon rod to break.

After ordering a comprehensive inspection, Yang Lie went to test the pulling speed himself, and he finally discovered something fishy.

After maintaining 3 mm for half an hour, the machine will suddenly slow down to 1 mm. After another half hour of deposition, the pulling speed will reach 2 mm again, and sometimes it will still stop.

"Unable to maintain a steady pace."

After Yang Lie found out the results, he immediately reported the situation to Chen Xing.

After hearing about the situation of the quartz crucible furnace, he couldn't help complaining: "The walls of the quartz crucible are doped with impurities, and the equipment cannot regulate the speed. What the hell is this."

"Can it be repaired?"

Chen Xing looked at Yang Lie and said.

Because it is a "parallel import", there is no manufacturer that can repair it. Now we can only do it ourselves or ask engineers from Shanghai Silicon Group to come over.

"No."

Yang Lie shook his head, and while denying it, he changed the topic: "Although I don't know how to repair, there is a way to produce monocrystalline silicon rods normally."

"!!!"

Chen Xing's eyes lit up and he quickly asked: "What is the solution?"

"Manual control!"

"Manual control?"

"That's right!"

Yang Lie nodded heavily and confirmed again: "It is manual control. Although the equipment cannot be set at a fixed speed and the pulling speed is chaotic, you can continuously input the speed value to maintain the pulling speed within the range of 3 mm per minute."

He just tested it, and the equipment's lifting speed was chaotic, but it could be maintained within a certain range through speed commands.

For example, when maintaining 3 mm, when the device pulling speed changes to 2 mm, immediately enter the speed value of 4 mm, hold it for a period of time, and then change it back to 2 mm.

To put it simply, he needs to monitor the lifting speed of the equipment at all times to maintain the lifting speed at 3 millimeters per minute. This is an extremely difficult task.

Eight words summary:
If the equipment is not enough, technology will help!
Chen Xing frowned, looked at Yang Lie and asked, "You said before that it takes about eight hours to lift a 14-inch single crystal silicon rod, 60 minutes per hour. You have to concentrate on such a high-intensity lifting task for 480 minutes. Can you persist?"

480 minutes, purely based on experience and technology.

This is like a high-speed brake failure, and there is no brake escape route. You need to concentrate for eight hours to avoid vehicles on the road. You can imagine the difficulty!

Not to mention eight hours of intense concentration, even if you work for eight hours and fish for two hours, you will feel exhausted, let alone such an extreme situation.

but.

Yang Lie wanted to give it a try.

He looked at Chen Xing with firm eyes and said: "The quartz crucible is easy to repair, but the equipment speed problem is difficult to eliminate. I want to give it a try. I am confident that I can complete the task."

He spoke with a firm tone that was irresistible.

"it is good!"

Chen Xing nodded and continued: "Since you are confident, I will find someone to replace the quartz crucible liner for you now."

He still has some connections in the Shen City area.

And didn't Ren Guofei also say that Kunpeng Company has laid out semiconductor silicon wafers, and they must have replacement quartz crucible liners.

Without hesitation, he dialed Ren Guofei's phone number and briefly explained the situation he encountered.

Less than half a day.

A semi-trailer drove into Tengfei Industrial Park.

at the same time.

Ren Guofei also drove here to inspect the specific situation of Longxing Silicon Industry.

He was curious.

To what extent has Longxing Silicon Industry developed?

After Chen Xing learned that Ren Guofei was coming, he quickly went out to greet him and said, "Mr. Ren, I didn't expect you to deliver the quartz crucible in person."

"Hai, come and take a look."

Ren Guofei said with a smile.

Just after he finished speaking, he introduced the middle-aged man next to him and said, "This is our chief engineer of Kunpeng Industry, Shi Shunyi. I'll take him here to see if there is anything he can do to help."

"Hello Mr. Chen, I have long admired your name."

Shi Shunyi stretched out his hand and said.

This is a middle-aged man with a red birthmark the size of a coin on his face, but his facial features are still very regular.

Chen Xing stretched out his hand to hold it, and quickly thanked him: "Engineer Shi is here in person, so that might really trouble you."

He naturally knew that Ren Guofei wanted to come here to find out the details, but now that he was helping, there was no reason not to let him in. He quickly greeted the two of them and said, "Please come here, I will take you to the smelting and pulling furnace area. "

"Then we can take a look."

Ren Guofei smiled.

Shi Shunyi: "Thank you."

The three of them walked together, and there were blue-quality talents in every area of ​​the silicon factory. They all said hello to Chen Xing the moment they saw him.

The factory discipline made Ren Guofei envious, but it also made him a little surprised. When did Chen Xing lay out semiconductor wafers?

With so many talents in the silicon industry, the deployment time is at least half a year!
But six months ago, did Longxing Technology Company really invest money?

If it is a recent layout, the academician network is really terrible, and a semiconductor silicon wafer factory can be run with just a shake.

During their visit, the seven-meter-long quartz crucible liner was also replaced, and the 6N polysilicon was re-refined for purity. This process will continue for some time.

but!

The factory also has 20 pounds of 11N purity polysilicon in reserve.

The production cost of starting the quartz crucible heating with only 20 kilograms is definitely not worth it. However, Yang Lie, Chen Xing and even the entire Longxing Silicon Factory engineers want to know whether the 14-inch semiconductor silicon rod can be pulled out.

... Replacing the quartz crucible liner is very simple. Just use a special machine to clamp it out, and then put the spare liner in.

After replacing the inner tank, Yang Lie immediately asked Chen Xing for instructions: "President, the inner tank of the quartz crucible has been replaced. Now we only have 20 kilograms of polysilicon. Do we need to smelt and pull it?"

"20 pounds is so little..."

Shi Shunyi was stunned and said in confusion.

Chen Xing nodded slightly and responded to Yang Lie: "Let's smelt and pull it. Let's not consider the production cost this time."

Just after he finished speaking, he looked at Shi Shunyi and explained: "I threw 200 kilograms of 11N polysilicon in for smelting before. I really didn't expect that there were impurities in the quartz crucible. Now I can only re-refine the polysilicon."

"Understandable."

Ren Guofei smiled and laughed at himself: "We at Kunpeng Company have also been used to buying inferior equipment."

"is it?"

Chen Xing looked surprised.

Ren Guofei nodded and continued: "There is no way, the quality of parallel imported equipment depends on your own technology."

He noticed that Chen Xing's batch of equipment did not have a "manufacturer engineer". It was most likely that he purchased parallel imported parts and then assembled them himself, so the quality could not be guaranteed.

As the old saying goes, if they can purchase production equipment normally, there is no need for them to take the wrong approach.

Do you really think that they all have enough to eat and have nothing to do, so they like to buy parts and assemble them?

While several people were communicating, the purified 11N polysilicon was thrown into the quartz crucible furnace, with Yang Lie and Zhai Yong taking command.

"The temperature in the furnace is raised and maintained at 1450 degrees Celsius!"

"The temperature in the furnace is raised and maintained at 1450 degrees Celsius!"

As the factory work started, Ren Guofei looked at Chen Xing and joked: "It should be okay for us to watch here, right?"

"Of course it's fine."

Chen Xing smiled and continued: "We are a domestic alliance, and we are also grateful to the quartz crucible liner sent by Boss Ren."

"Small things."

Ren Guofei waved his hand.

Several people looked back at the working area. The operator kept an eye on the equipment values ​​and shouted at several times the volume.

"300 degrees Celsius!"

"700 degrees Celsius!"

"It's 1000 degrees Celsius!"

"It has reached 1450 degrees Celsius. I repeat, the temperature of the quartz crucible smelting furnace has reached 1450 degrees Celsius!"

Under extremely high temperatures, the 11N polysilicon in the quartz crucible began to melt. When it completely became a liquid, Zhai Yong began doping.

"Hey!"

Ren Guofei was puzzled and asked: "What is this engineer doing? What proportion of the solution is he preparing?"

"This step is called doping."

Chen Xing smiled and explained to Ren Guofei: "What is doped now is phosphorus, which is a pentavalent dopant and is usually used in the production and preparation of N-type silicon crystals. Phosphorus doping can introduce additional free electrons. , thereby increasing the conductivity of silicon and allowing the finished chip to perform better."

Good guy!
Does the boss know so much about doping technology?
Shi Shunyi glanced at Chen Xing. He originally wanted to explain, but he didn't expect to be overtaken.

But he wanted to ask weakly, is this really the CEO of a company with a market capitalization of tens of billions?Why do you know so much about industry?
Science guy?
Science and engineering men are not so perverted, right?

Ren Guofei was also surprised and couldn't help but admire: "Mr. Chen is very knowledgeable. He actually knows so much about semiconductor wafer production."

"you flatter me."

Chen Xing smiled faintly and continued: "I only found out a few days ago."

There was no modesty in his words. He did not know about adulteration until a few days ago and just silently wrote it down.

Shi Shunyi nodded slightly, glanced at Chen Xing, and praised: "Mr. Chen is so humble. If he can remember phosphorus doping, he must be a top student at a top polytechnic university."

"I think so, otherwise I wouldn't be able to accumulate so much knowledge."

Ren Guofei agreed with a smile.

He studied architecture and really didn't understand the production of semiconductor silicon wafers.

The current mainstream revenue of the Kunpeng company he deployed is in the construction of base stations and the sale of mobile phones, semiconductor silicon wafers and Kirin chips. He is only responsible for spending money on research and development.

"you flatter me."

Chen Xing responded modestly.

He did not dwell on this topic because the doping process was over and Yang Lie was about to make the pulling crystal seeds.

He followed the same pattern, filled a small quartz crucible with some silicon solution, and quickly poured it into the prepared membrane tool to form a slender growth crystal seed.

Because this is the first production, the seed crystal for inverted coating cannot reach the level of single crystal silicon, but it is more than enough to pull single crystal silicon.

After making the seed crystal, Yang Lie commanded loudly: "Cool the quartz crucible furnace and keep it down by 1000 degrees."

"The quartz crucible furnace cools down and remains at 1000 degrees."

The equipment operator repeats.

When the temperature of the equipment gradually dropped, he raised his voice and shouted: "The temperature in the furnace has dropped to 1000 degrees."

"Install the seed crystal."

After Yang Lie finished speaking, he immediately took over the position of controller without any hesitation.

When the seed crystal is installed, it begins to slowly extend into the quartz crucible at 1000 degrees Celsius and immersed in the silicon solution.

The moment it was immersed in the silicon solution, Yang Lie immediately pulled it up 10 centimeters to form the "neck" of the silicon rod. Due to high-frequency slip dislocations, the silicon crystal will initially have wavy patterns, and this section will be cut later.

"This is…"

Shi Shunyi frowned secretly, he actually couldn't understand.

Why did it rise so much in an instant?
When he was confused, he discovered that Yang Lie kept outputting values, which made him look at Chen Xing in confusion:

"Mr. Chen, I have a question. Why does your engineer keep entering the speed value? Is there anything special about this?"

"Um...it's a bit embarrassing to say this." Chen Xing showed helplessness and explained: "In addition to the impurities in the inner tank of the quartz crucible, our equipment also has some problems with the pull-and-speed function."

Shi Shunyi: "..."

Ren Guofei: "..."

Good guy!
They called him Good Guy!

What kind of silicon wafer factory is this?
Even if there are impurities in the quartz crucible, the equipment is still in a semi-failed state? ? ?
Shi Shunyi already found it incredible that 11N polycrystalline silicon could be purified under such conditions. Now that he was actually trying to pull a single crystal silicon rod, he felt like his head was buzzing.

It’s really outrageous. Open the door for outrageous mother, outrageous mother is home!
Ren Guofei couldn't stand it any longer. He looked at Chen Xing and said, "If the equipment is not good, it's better not to force ourselves to develop silicon wafers by ourselves and focus on photoresist. We at Kunpeng Industrial can still complete semiconductor silicon wafers."

They can't make 12-inch ones, but they can still produce 6-inch and 8-inch ones.

According to Chen Xing's conditions, Ren Guofei felt that not to mention 12-inch semiconductor silicon wafers, even 6-inch ones might not be able to be produced. How can you produce them when the production equipment is half-failed?
"Harm! We still want to try, what if it works?"

Chen Xing smiled faintly.

He believed in Yang Lie's skills unconditionally.

Golden quality talent, this is the capital that can be trusted in him.

Ren Guofei didn't know where Chen Xing's confidence came from. He didn't believe it in his heart. After all, the equipment was in a semi-malfunctioning state.

Although he didn't believe it, he didn't refute it. Time would prove everything. He wanted to see if he could pull out a large-sized silicon rod.

"Then let's wait for good news."

"Waiting for good news."

Chen Xing nodded in agreement.

Shi Shunyi, the chief engineer of Kunpeng Industry, who stood aside without speaking for a long time, was filled with disbelief in his heart.

There are impurities in the quartz crucible, which can be easily solved by replacing them.

But you have to say it!

The production equipment is in a semi-failed state. Can it pull out large-size silicon rods?
He definitely doesn't believe it, even to death he won't believe it. He has never seen anyone with such awesome silicon rod lifting skills in his life!
(End of this chapter)