A nation's industrial development begins with junior engineers.

There's no need to leave the city of Beijing.

It was just a matter of turning a corner and entering another factory.

热

很热

The little one was so hot that he took off his coat.

On a heated crucible the size of a bathtub, a small section with a silvery-gray metallic sheen is slowly taking shape.

"This is?"

“Single crystal silicon! Single crystal silicon made by the Czochralski method. My preparation method is generally fine, but during the preparation process, due to the thermal field, the drawn length is too short. Please help me think of a solution!” Dr. Lan Ying spoke frankly, without any attempt to conceal the facts.

“We are currently using a ‘gourd’ for the crystal pulling process. Once we add your new equipment, this should solve the problem. However, after crystal pulling, a ‘neck’ single crystal will grow. Sometimes, if it’s not pulled properly, this neck will keep extending, and the pulling process will fail!”

"We think it's due to a problem with the warm-up..."

If it works, it works; if it doesn't, it doesn't. That's how straightforward the older generation of scientists were, both to themselves and to others.

As Jiang Xia watched this pulling process, he inexplicably recalled the scene of himself in Northeast China, using a stick to pull out large strips of dough.

Although saying this is very disrespectful to Dr. Lan Ying, it really does look alike...

The only difference is that the "big one" falls downwards, while this silver-gray thing goes upwards...

When I first started looking at the preparation of synthetic rubies, I didn't make such a strong connection, but this single-crystal silicon has a slightly larger cross-section, and looking at it, it seems so similar...

The little brat wanted to laugh, but he held it in and quickly changed the subject.

"Huh? Aunt Lan Ying, isn't this preparation method similar to that of the ruby ​​outside?"

*Slap!* Jiang Xia received a slap on the back.

"They're completely different! Pulling aluminum oxide crystals requires temperatures above 2050 degrees Celsius! Luckily, we found an iridium crucible in the warehouse, otherwise what you wanted would have taken several more years to arrive!"

"This silicon melting crucible is only 1420 degrees Celsius, which is much lower than the temperature of the crucible in front."

Why is it so hot?

"Slap!" Another slap. "Volume! How big is that iridium crucible anyway?"

"Luckily, your requirement for the finished product is only a few millimeters. Otherwise, if you wanted a larger one, you would have to find some more iridium!"

Iridium, huh? It doesn't seem like such a remarkable thing.

There's a pen factory that claims its pen nibs are made of iridium.

Well, whatever, whatever Aunt Lanying says goes.

The burning pain on his back extinguished the little boy's smile.

Ha, little brat, you don't know that the so-called iridium pen actually has a tiny dot at the tip, barely bigger than an eye booger.

Iridium is actually an alloy of platinum and iridium. If it were made into something the size of a crucible, and the selling price of pork was 92 yuan per 50 kilograms, the outer crucible would probably be worth 383 small hairs.

Therefore, industry can sometimes be irrational. How can you industrialize without money?

Unless you have the awareness to give up everything for your descendants.

Fortunately, we Chinese have them, and not just a few, but a whole group. With the Lunar New Year approaching, go and give your grandparents a sincere greeting. Without them, you probably wouldn't be able to enjoy something like this for 9.9 yuan with free shipping.

Going a step further, when greeting someone, don't do so as a junior.

Put on your old hat and drape your old scarf.

"Comrade, you've worked hard... Is this prosperous era as you wished?"

……

That's a bit too far off, let's get back on track.

Dr. Lan Ying asked the little brat to solve the problem of stabilizing the warm-up.

Monocrystalline silicon is a tiny thing that is affected by too many external factors, and temperature is one of the more challenging ones.

Not much to say, just make the front cooling system and lifting system bigger. As for stabilizing the thermal field, the kid couldn't think of a better way either. After racking his brains for a long time, he came up with the idea of ​​adding more crucibles and making them rotate.

"Aunt Lanying, let's add a quartz crucible inside the graphite crucible, and then add a rotating mechanism to make the crucible group rotate..."

That's right, it's spinning.

The stable thermal field problem that Dr. Lan Ying is currently encountering is, simply put, the situation where the crucible cannot be heated evenly.

Even in later generations, the solution to this problem would be incredibly complex.

Making the crucible spin is the best solution to the problem at the lowest cost.

It's like... well, an old-fashioned popcorn machine.

Turn it around, and the air pressure reaches the point where you step on it and hear a "bang".

"Let's get this spinning, hey, it's pretty good. But there's still one factor..."

Dr. Lan Ying tilted her head and thought for a moment, then decided that the little brat's suggestion was quite good.

"And can you maintain the radial temperature?"

Dr. Lan Ying gestured with her hands: "During the seed crystal lifting process, doesn't a thin neck form? Normally, the shorter the thin neck, the better, but after it comes into contact with air, it..."

"Simple! We can make the crucible assembly not only rotate, but also move up and down, right? By setting it up, we can keep the liquid level in the crucible and the crystal rod at the same stretching distance!"

"Good, good! This little brain is so smart!"

Dr. Lan Ying angrily rubbed the dog's head, "You wait, I'll go find the mechanics in the factory. You help me get a set of blueprints, and I'll have them make it!"

Jiang Xia waved his hand, "Forget it, I'll go back to the factory and make it. The scale of this lead screw and transmission device is not on the same level as that little gadget before. Could you find me a few more stepper motors, and I'll come and install them when the time comes!"

"How long will it take to get better?" Dr. Lan Ying's eyes sparkled.

"Are you in a hurry?"

"Urgent! I've got a lead on the integrated circuits you mentioned, and I need this batch for experiments! Also, those comrades at the foot of Tianshan Mountain said they want more 'big yellow' (a type of component), the quantity of components from Hong Kong is still a bit too small..."

Jiang Xia nodded. There was no other way; the navy still had "sea slickers" to take care of. Being able to squeeze out money to buy some transistors was already a very generous act.

"Alright! Two days! It's mainly some precision parts that need stress relief, and also the cooling system pipes, which need to be cold-rolled. The cold rolling system hasn't been started yet, otherwise I could have it done for you in one day!"

"Wow! That's great!" Dr. Lan Ying tiptoed and did a ballet spin.

Then he stuffed a small handful of soybeans into Jiang Xia's hand, "Eat! Eat! I got half a pound of soybeans yesterday, and I roasted them myself!"

Wow, our Dr. Lan Ying is amazing! Not only can she pull single-crystal silicon, but she can also fry soybeans!

While enjoying his meal, Xiao Dai Mao wondered if there was any venison that the Air Force bigwig had sent over that he hadn't finished.

We'll bring them over in a couple of days, so Dr. Lan Ying can have a good taste too.

The fried soybeans smelled delicious, but the more I ate, the more I wanted to cry.

Waaaaah~~ If they had stayed with the Bald Eagles, they could probably eat whatever they wanted.

Put on your high heels, spray on some perfume. After the experiment is finished, will you leave work on time to attend various glamorous salons?

No, we need to change it!

Oh, right, that thing seems to have been obtained through a set.

Since the navy has a lot of fishing crews, should we develop and test that system first?

It's such a waste that people living by the sea take the large yellow croakers to feed their pigs.

I froze them and sent them to them; consider it a New Year's gift!

Get moving! Get moving!

Time waits for me!