Only by working together and competing together can we make the domestic industry more dynamic.

Just like Japan's silicon wafers can occupy a large share of the world, it is because of internal competition.

Of course, we must also prevent healthy competition from turning into vicious involution.

This is especially common in China.

Although China is known as the world's factory, and various factories receive countless orders from foreign manufacturers, there are too many homogeneous factories without technology, which causes these factories to fall into price competition in order to compete for these orders.

of involution.

Price involution means using lower and lower prices to grab orders from abroad. If there are no orders, the factory will close down, so profits will become lower and lower, and workers' wages will also become lower and lower.

It is difficult to solve this situation, but this is also because these factories do not have real technology.

As a high-tech industry, silicon wafer fabs obviously cannot be involved. This is a problem that is both necessary and necessary.

Therefore, we cannot support too many manufacturers in the future.

Of course, this issue is not something Lin Xiao needs to consider now. Someone will consider it in the future.

He no longer paid attention to the polishing here and said: "Okay, let's take a look at our purification effect later. Then we can look forward to our final production efficiency in ten days."

"good!"

People responded one after another, and after waiting for another two hours, they returned to the electric arc furnace they had seen before.

After three hours of high-temperature reaction, the reaction inside is basically very complete.

Then, the silicon inside is poured out, and after cooling down, it is transferred to another place for re-purification, that is, the silicon is refined with hydrogen chloride, and then more pure polysilicon is obtained using chemical vapor deposition.

It is silicon with a purity of eleven-nine, which can be called a pure substance.

Lin Xiao also made changes to this step.

It is also an adjustment to the vapor deposition method.

The vapor deposition method introduces two gaseous raw materials into a reaction chamber for reaction, and finally forms a new material, which is deposited on the surface of the wafer.

There are many factors that affect the final reaction, including the pressure in the reaction chamber, the temperature of the wafer, the flow rate of the gas, the distance of the gas through the wafer, etc., which will all affect the final purity.

Lin Xiao once again returned to his old business and came up with his comprehensive calculation of the chaotic system, and finally calculated a more accurate parameter value for their vapor deposition process.

In this way, they can more easily extract pure polysilicon.

Of course, this method is relatively straightforward, and Lu Zhang can see it, so he has no problem with it. However, the method is too hard-core. It is probably equivalent to decomposing the prime factors of a large number. Lin Xiao can see it at a glance.

, while others can only count one number at a time, so this method cannot be replicated either.

The next third step is to use the pulling method to pull the molten polysilicon and gradually form silicon rods.

This step is universal and Lin Xiao has not modified it. Of course, the polysilicon obtained in the first two steps is already pure enough. This step of pulling will not change the purity, so Lin Xiao does not need to think about it.

Everyone spent half a day visiting it, and the final result obviously amazed everyone.

Such a production line is among the top silicon wafer production lines in the world.

No matter in terms of production speed or yield.

"Okay, this time we will conduct trial production for ten days, and then we will test all the silicon wafers produced in the past ten days to determine our final results!"

"good!"

Everyone cheered.

So in the next ten days, their production line began to operate at full speed, and the power of almost all machines was turned to maximum.

What surprised and frustrated them was that due to Lin Xiao's optimization of the purification process, their production speed of primary processing silicon wafers increased by more than 30%, which resulted in their polishing machine being somewhat insufficient.

.

They still need to buy several more polishing machines to maximize the productivity of this production line.

Of course, we can wait until later to talk about these things. First, they have completed the ten days of testing.

Just like that, time passed quickly.

Naturally, Lin Xiao did not stay here forever, but returned to Beijing University.

It happened to be the graduation season of senior year, and the senior students had to defend their thesis, so he also served as the defense review teacher for a while.

Although it is from Beijing University, the quality of the graduation thesis is also uneven.

Of course, if you can pass it, you can pass it. As a young man, Lin Xiao still understands these young students very well, although he is not a veteran - after all, his original undergraduate thesis could be directly published in top international journals.

However, after all, this was Beijing University, and some of the students' papers showed a high level of quality and were praised by him.

All in all, his defense group basically passed everything they could. Except for a few students whose papers were severely criticized by several other reviewers, he did not hold any objections.

Well, anyway, the students in his defense group were very grateful to him.

As for the students in other groups, that's out of his control, just be happy for yourself.

In this way, time passed quickly, and ten days passed quickly.

Ten days of trial production testing ended successfully.

The final test results surprised everyone.

As long as the number of polishing machines keeps up, their production line capacity will reach the top level in the world.

At the same time, considering the cost of raw materials, electricity costs, transportation costs, etc., they will only be lower than competitors. After all, China itself has enough raw materials. Compared with Japan, which needs to import raw materials from abroad, China

China is in an absolutely dominant position, and China's industrial power unit price is also among the lowest in the world, while Japan's power unit price is nearly twice that of the former.

All in all, China is in an advantageous position in all costs, and the world's major chip foundries are close to China, such as TSMC and UMC in Taiwan, Samsung in South Korea, and Huaxin in Shanghai.

International, Huahong Group.

Therefore, as long as they can build enough production lines, there is only one result - winning hemp.

And this news quickly attracted the attention of the above.

In just a few days, the central government issued a document and issued instructions to build high-tech silicon wafer production lines as soon as possible, provide low-interest or even interest-free loans, and stimulate relevant domestic manufacturers to build new production lines.

At this point, the clarion call for the first large-scale attack on the semiconductor industry chain was sounded.

Among them, Lin Xiao’s Dingguang Technology Company was the “strategist” in this attack.

Defended!

I finally felt relieved.

In the near future, it may be due to the final preparations for graduation, such as a class dinner the day after tomorrow, so the update may not be stable. When everything is over, it will return to normal, and the chapters that were owed before will be made up.
Chapter completed!