Chapter 120 Equipment is not enough, technology is needed
"The wall of the quartz crucible is the one that is in direct contact with the silicon solution. Now it involves a question, whether to destroy the machine and detect 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?
Crack 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?
Besides, 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 at the top, he smashed down half a piece of quartz.
Then he 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 blending into the silicon solution affects the final cost and purity."
"It is indeed an equipment problem."
Chen Xing muttered.
Currently, the quartz crucible has been damaged. Even if it is not damaged, he does not dare to use it anymore. 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 up: "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 know."
Since I have doubts It was an equipment problem, and Yang Lie already had suspicions.
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 constant speed.”
After Yang Lie checked the results, he reported the situation to Chen Xing immediately.
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, denying it and changing the topic at the same time: “Although I don’t know how to repair it, there is a way to produce monocrystalline silicon rods normally.”< br>
“!!!”
Chen Xing’s eyes lit up and he quickly asked: “What is the method?”
“Manual control!”
“Manual control Control? ”
"That's right!"
Yang Lie nodded heavily and confirmed again: "It's manual control. Although the equipment cannot be fixed and the pulling speed is chaotic, you can continue to input the speed value to maintain the pulling speed. 3 millimeter range per minute.”
He just tested it, and the device’s pulling speed was chaotic, but it could be maintained within a certain range through speed commands.
For example, when maintaining 3 mm, when the equipment pulling speed changes to 2 mm, immediately enter the speed value of 4 mm, maintain it for a period of time, and then change it back to 2 mm.
To put it simply, he needs to monitor the pulling speed of the equipment at all times and maintain the pulling speed at 3 mm per minute. This is an extremely difficult task.
Eight words summary:
The equipment is not enough, technology is needed!
Chen Xing frowned, looked at Yang Lie and asked: "You said before that it takes about eight hours to pull a 14-inch monocrystalline silicon rod, 60 minutes per hour, and you have to concentrate on it for 480 minutes, so Can you endure the high-intensity lifting task? ”
480 minutes, purely based on experience and technique.
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.
However.
Yang Lie wants 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.
"Okay!"
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 Ren Guofei also said that Kunpeng Company has laid out semiconductor silicon wafers, and they must have replacement quartz crucible liners.
He did not hesitate, 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 hurriedly went out to greet him and said, "Mr. Ren, I didn't expect you to deliver the quartz crucible in person."
"Hey, I stopped by to 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 will bring him 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.
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 may really trouble you."
He naturally knew that Ren Guofei wanted to come to find out the details. But now that they were helping, there was no reason not to let them in. He quickly called to the two of them and said, "Please come this way, I will take you to the smelting and pulling furnace area."
"Then we can just do it. Take a look."
Ren Guofei smiled.
Shi Shunyi: "Thank you."
The three of them walked together. There were blue-quality talents in various areas of the silicon factory. They all said hello to Chen Xing the moment they saw him.
While the factory discipline made Ren Guofei envious, it also made him a little surprised. When did Chen Xing lay out the semiconductor wafers?
With so many talents in the silicon industry, the deployment time is at least half a year!
But half a year ago, did Longxing Technology Company really invest money?
If it is a recent layout, the academician's network is really terrible. You can run a semiconductor silicon wafer factory 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, a process that will continue for some time.
But!
The factory also has 20 pounds of 11N purity polysilicon in spare.
The production cost of starting a quartz crucible heating with only 20 kilograms is definitely not worth it. However, Yang Lie, Chen Xing and even the engineers of the entire Longxing Silicon Factory want to know whether the 14-inch semiconductor silicon rod can be heated. Pull it 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 extract it?" Pull.”
"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, and don't 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 into it 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, Kunpeng Company, often buy inferior equipment, and we are used to it."
"Really?"
Chen Xing showed off his wipes Accident.
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 " "Manufacturer engineers" most likely purchased parallel-imported parts and then assembled them themselves, so the quality cannot 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!"
With the start of factory operations, Ren Guofei looked at Chen Xing and joked: "It should be okay for us to watch here, right?"
"Of course it's no problem."
Chen Xing smiled and continued: "We are The domestic alliance is also grateful for the quartz crucible liner sent by Boss Ren.”
“It’s a small matter.”
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!”
“1000 degrees Celsius!”
“It has reached 1450 degrees Celsius, repeat, quartz The temperature of the crucible smelting furnace has reached 1450 degrees Celsius! ”
At the extreme high temperature, the 11N polysilicon in the quartz crucible began to melt. When it completely became a liquid, Zhai Yong began to dope.
“Hey!”
Ren Guofei was confused and said: “What is this engineer doing, and 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 N-type silicon crystals. In production preparation, phosphorus doping can introduce additional free electrons, thereby increasing the conductivity of silicon and making the finished chip perform better.”
Good guy!
The boss knows 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?
A man from science and engineering?
The men in science and engineering 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 the production of semiconductor silicon wafers."
"Excellent."< br>
Chen Xing smiled faintly and continued: "I only found out about it a few days ago."
There was no modesty in his words. He did not know about doping until a few days ago, but he just kept silent Note 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 science and technology university."
"I think so too. , otherwise we wouldn’t be able to accumulate so much knowledge.”
Ren Guofei agreed with a smile.
He studied architecture and really doesn’t understand the production of semiconductor silicon wafers.
The current mainstream revenue of the Kunpeng company he laid out 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.
“Thank you.”
Chen Xing responded modestly.
He did not dwell on this topic because the doping process was over and Yang Lie was going to make the pulling crystal seeds.
I saw him follow the same pattern, filling a small quartz crucible with some silicon solution, and quickly poured it into the prepared membrane tool to form a slender growth seed.
Because this is the first production, the seed crystal used for pouring the film cannot reach the level of monocrystalline silicon, but it is more than enough to pull the monocrystalline silicon.
After making the seed crystal, Yang Lie commanded loudly: "Cool the temperature of the quartz crucible furnace and keep it down by 1000 degrees."
"Cool the temperature of the quartz crucible furnace and keep it down by 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."
Yang Lie After saying that, without any hesitation, he immediately took over the position of controller.
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 he was immersed in the silicon solution, Yang Lie immediately pulled it 10 centimeters to form the "neck" of the silicon rod. Due to high-frequency slip dislocations, the silicon crystal will initially have wavy patterns. This section will follow Can be cut and not used.
"This is..."
Shi Shunyi frowned secretly, he actually couldn't understand.
Why did it rise so much in an instant?
While he was confused, he discovered that Yang Lie kept outputting values, which made him look at Chen Xing in confusion and said:
"Mr. Chen, I have a question. Why does your engineer keep inputting the speed value? Is there anything special about this? "
"Um...it's a bit embarrassing to say this." Chen Xing showed helplessness and explained: "Our equipment has nothing to do with the quartz crucible. In addition to the impurities in the bladder, there is also something wrong with the lifting and speed-regulating 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 outrageous to open the door for outrageous mother, outrageous mother is home!
Ren Guofei couldn't stand it anymore and looked at Chen Xing and said: "If the equipment is not good, it is better not to force ourselves to develop silicon wafers and focus on photoresist. We Kunpeng Industrial can still complete semiconductor silicon "
12-inch can't be produced, but they can still produce 6-inch and 8-inch.
According to Chen Xing's conditions, Ren Guofei felt that let alone 12-inch semiconductor silicon wafers, even 6-inch semiconductor wafers may not be able to be produced. How can you produce them when the production equipment is semi-failed?
"Damn! 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 the good news."
"We'll wait for the 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.
The quartz crucible has impurities, which can be easily solved by replacing it.
But you have to say it!
The production equipment is half out of order, 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)