43. Chapter 43 The duck in the mouth flew away
Chapter 43 The duck in the mouth flew away
Compared with plastic lenses, the manufacturing difficulty of silicon wafers has increased by more than one level.
Not only is the equipment itself complex and large, but the material requirements for the equipment itself are also higher. For example, the furnace body and furnace tube of the single crystal furnace use a high-purity SiO2 that can withstand chemical reactions and thermal stress at high temperatures.
The parts that come into contact with silicon materials, such as the furnace bottom and furnace cover, are made of ceramic materials, made of high-purity Al2O3 and Si3N4 and other high-temperature resistant materials, with strong heat conduction and corrosion resistance.
The most critical part is the heating rod.
Kangchi’s method of purifying single crystal silicon is not the mainstream Czochralski method, but the floating belt method, also known as the zone melting method. The principle of this method is to put a ring heater on the polycrystalline silicon rod, melt and purify the polycrystalline silicon rod in sections, and finally obtain 11 9 purity single crystal silicon rods.
Its advantage is that the manufacturing speed is faster than the Czochralski method.
It takes about 8 hours to pull out a 12-inch 1.5-meter silicon rod using the Czochralski method, while it only takes 1 hour or even less using the floating belt method.
In addition, the floating belt method can also change the shape of the single crystal silicon rod through technical means. For example, silicon wafers are usually round. After photolithography and etching, silicon wafers become wafers. Finally, like cutting a cake, the wafer is cut into dozens of square chips, and after packaging, it becomes the CPU in the hands of the user.
And the process from round to square will inevitably cause edge waste.
If the floating belt method is used, as long as the shape of the heating rod is changed, theoretically, silicon rods larger than 12 inches can be produced, reducing the waste of subsequent wafer cutting.
It is even possible to continue technological breakthroughs and pull out square silicon rods to achieve zero wafer waste.
However, the floating belt method has very high requirements for the technology of smelting and purification. At present, the yield of single crystal silicon rods obtained by this method is very low, and it is a method that needs to be improved.
And Kangchi’s solution is actually an improved version of the floating belt method.
Its method is to add a cooling rod under the heating rod.
This can not only further improve the smelting speed and quality, but also quickly stabilize the shape of the silicon rod.
However, its technical difficulty has undoubtedly increased by an order of magnitude, and the control ability of the heating rod and the cooling rod is extremely demanding. The complexity of its equipment is not at the same level as that of ordinary single crystal furnaces.
Because of this, Kang Chi could not complete this project by himself like the lens production line. The materials of the single crystal furnace alone were not something that ordinary people could handle.
It requires professional technicians and professional equipment to make the parts on his drawings.
Therefore, the first thing Kang Chi did when he returned to Dongyang City was to set up the personnel department of Dahan Silicon Industry and let them recruit a large number of outstanding engineers and scientific research technicians from all over the country.
The second thing was the initial project bidding for the Dahan Silicon Wafer R&D and Manufacturing Center.
This was not difficult. As long as the news was released, a lot of construction companies would respond.
What Kang Chi had to do was to select more reliable construction companies and ask them to quote.
He temporarily handed this work over to Fang Qiming.
Fang Qiming was already very busy managing Daqin Optics and did not understand the project bidding, but Kang Chi had to draw the design drawings during this period and was too busy, so Fang Qiming had to bite the bullet.
The main reason is that there is too little manpower.
With the establishment of the human resources department of Dahan Silicon Industry, this situation was soon alleviated.
In addition to recruiting people, there are some things that HR can do. —— Dongyang Investment Promotion Bureau.
After Director Guo came to the office, he habitually read the latest investment newspaper first.
This is a habit he developed after coming to the Investment Promotion Bureau. It helps him understand the situation of investment promotion bureaus in various places. When promoting work, he may find inspiration from it.
When he turned to the third page of the newspaper, a title suddenly caught his attention. ”Dahan Silicon Industry?”
He was too familiar with this name.
Director Guo couldn’t help but cheer up and read on.
The article was not long. It first briefly introduced the content of the 100-day battle in Gangcheng City, and then reported their latest progress: Dahan Silicon Industry and Gangcheng City successfully signed a letter of intent for an investment of 1 billion yuan! Director Guo’s brows jumped.This Dahan Silicon Industry…
After hitting a wall in Dongyang, it hooked up with Gangcheng so quickly? !
He immediately realized that something was wrong! Dahan Silicon Industry never thought about hoarding land.
They really wanted to invest in silicon wafers! Otherwise, how could they go to a remote place like Gangcheng where the land has little room for appreciation? Director Guo felt like he had eaten a pill. The duck in his mouth flew away.
And he spit it out himself.
Who wouldn’t feel uncomfortable? ”No, they just signed a letter of intent!”
There is still room for recovery! Director Guo immediately took the newspaper and found Wang Ziliang in a hurry, and slammed the newspaper on the table: “Quick! Contact Dahan Silicon Industry and tell them that we agree to let them settle in the high-tech zone and invite them to come as soon as possible for detailed discussions!”
After hearing this, Wang Ziliang frowned.
He first glanced at the newspaper on the table and soon understood what happened.
But he was not panicked, but took out another newspaper and said to Director Guo: “Don’t worry, Director Guo, I also know about this, but why don’t you take a look at this newspaper first…”
”Dongyang Evening News?”
Director Guo took the newspaper handed by Wang Ziliang and read it with some doubts.
“Analysis of the Phenomenon of Enterprises Illegal Land Hoarding – Talking about the recent Dongyang Investment Promotion Bureau’s strong refusal of many enterprises to settle in the High-tech Zone”
The article first talked about the recent investment promotion incident of the Dongyang Investment Promotion Bureau, and used sharp writing to satirize the outrageous applications of many enterprises including Dahan Silicon Industry. In this paragraph, the reporter also interviewed relevant experts and professors in the industries involved in these enterprises, and pointed out how outrageous the applications of these enterprises were through their professional analysis.
Especially the company that said it would spend 100 million to develop a recyclable rocket was scolded the most.
In the middle of the article, the real purpose of these enterprises was analyzed. During the period, many cases of enterprises illegally hoarding land were cited, and the harm of enterprises hoarding land was further interpreted.
At the end of the article, the Dongyang Investment Promotion Bureau was highly praised.
They believed that they were not overwhelmed by the pressure of attracting investment, but strictly adhered to the bottom line, and eliminated the hoarding of land by enterprises from the source in Dongyang City, which gave these enterprises with impure motives a blow and created a more fair and just business and investment environment for Dongyang City.
This article was written by Yuan Shulin, a reporter of Dongyang Evening News. She is a senior reporter of Dongyang Evening News. She is famous for her sharp writing of negative news. Many leaders keep a distance from her, fearing that her pen will be written into the news.
Although she wrote negatively this time, but she highly praised the work of Dongyang Investment Promotion Bureau, which made Director Guo feel a little fortunate.
At the same time, he also realized the meaning of Wang Ziliang’s words just now.
They just praised you, and you agreed to move in…
Will it be criticized? How will the leaders see you?
Director Guo was immediately caught in a dilemma.
(End of this chapter)