In 1978, I was admitted to Harbin Institute of Technology

Chapter 67: The girl asked the launch site: The smart Wang Zheng would not lie to children

"Thank you, Director, for your hard work!"

At the Harbin Railway Station, Wang Zheng saw Xie Jianguo carrying a bulging army green travel bag and walked towards him from a distance.

"Suck~ It's so cold! If I had known it was so cold here, I wouldn't have come! Suck~"

Xie Rou, wrapped in a thick flowered jacket, kept sniffing her nose.

Wang Zheng hurriedly handed over the military coat he had prepared for her, "Xie Ermei, put on your coat quickly. The temperature difference between day and night is huge in Harbin, and it's cold in the morning. You just got off the train, and your body hasn't adapted to the weather yet, so don't catch a cold..."

If Xie Rou was too cold to come to school and went to another school, Wang Zheng thought he would be beaten to death by Li Rui.

"Sniff~ Teacher Wang, sniff~ Wait a little longer, it won't get even colder here, right? Sniff~"

"Almost! Almost!"

Wang Zheng answered hurriedly.

It was minus 2 or 3 degrees Celsius in the morning, and the average temperature in winter is only about minus ten degrees Celsius.

Tan Heping and Wu Tao, who were standing nearby, knew how important the snotty-nosed girl was in the principal's eyes, so they hurriedly lied to help Wang Zheng: "Yes, you just got here, so you're not used to it. You'll get used to it in a few days."

Xie Jianguo, wrapped in a military coat, just looked at them silently.

He didn't know how cold it was here in winter, but he thought since his son was here, it shouldn't be too cold.

Looking at the bulging travel bag in Xie Jianguo's hand, Wang Zheng reached out:

"Thank you, Director. I'll help you carry the bag."

"No trouble, I'll carry it myself!"

Xie Jianguo moved the bag behind him without hesitation and did not let Wang Zheng help carry it.

"Xie, Director. Let's get in the car first. The principal and Director Du are waiting for you at the school."

Tan Heping was also about to help Xie Jianguo carry the bag, but was glared at by Xie Jianguo.

I couldn’t help but wonder: How could a factory director be so stingy?

"You have such a big school, do you also use 212?"

Looking at the canvas 212 parked next to him, which was even older than the one provided by the Industrial Bureau to Hongguang Factory, Xie Jianguo couldn't help but frown.

Harbin Institute of Technology doesn’t seem to be as good as my son said.

If you are strong, at least you should have a sedan instead of a jeep.

"Well, the school's funds are all used for technology research and development and infrastructure. Our school upholds the tradition of hard work, so it's fine as long as the car can be used."

Wu Tao felt that Xie Jianguo's tone and expression were not right, so he started to explain.

You can't say that the school is poor and the original cars were replaced by the principal's funds.

"Xie, Director. Let's go to the school guesthouse first. After we're settled, we'll go find Principal Li. What do you think?"

Tan Heping invited Xie Jianguo and his daughter to get in the car.

"Let's go find Principal Li and Director Du first."

In order to express the school's importance, the assistant to the principal, the deputy director of the admissions office, and the secretary of the department head all came.

There was only one car, and Tan Heping was the driver himself.

"Our city of Harbin has a long history..."

After the car started, Wu Tao began to introduce the surrounding historical buildings to Xie Jianguo and his daughter.

From the train station to the school, there are many old Russian-style buildings on both sides of the road.

"Teacher Wu, I will have plenty of time to learn about history in the future. Can you tell me about the aerospace major at the school? My brother told me that the school has a rocket launch site..."

Xie Rou interrupted Wu Tao's introduction.

History or not, she is not interested.

I just wanted to see if, if I learned rocket manufacturing in school and then designed it myself, I could launch it directly at school to verify whether there were any problems with my design.

This is what Xie Wei told her.

“Is there a rocket launch site at the school?”

Wu Taoman, who was sitting in the passenger seat, widened his eyes and turned to look at Wang Zheng, who was sitting in the back seat with Xie Jianguo and Xie Rou.

Who is so unreliable as to brag to a child?
"Well, Xie Rou, the school does have the idea of ​​building a rocket launch site. However, the school is currently short of funds and needs to give priority to other aspects of construction. In addition, the construction period of a rocket launch site is very long... Do you know the satellite launch center in Daliangshan? It started construction in 70, and it has not yet been put into use..."

Wang Zheng secretly cursed Xie Wei in his heart for being unreliable and telling lies to deceive children.

There are currently three major space launch bases in the country: Jiuquan, Taiyuan and Xichang. The Xichang launch base has not yet been completed and put into use.

Wang Zheng didn't dare to say that the school didn't have a plan. If there was one, it wouldn't be considered cheating a kid, right?
After saying this, Wang Zheng felt that his brain was still working quickly.

"No?"

Xie Rou looked disappointed, "My brother would definitely not lie to me..."

"Well, Xie Ermei, your brother definitely didn't lie to you. The school does plan to build a rocket launch center... Is it possible that when your brother said that, you heard "under construction" instead of "completed"?"

Wang Zheng’s mind started racing again.

I cursed that bastard Xie Wei in my heart. Why was he bragging to the kid?
"..."

In the car, it became quiet.

Tan Heping, who was driving, silently increased the speed.

······
"Someone is scolding me?"

At this moment, Xie Wei, who was discussing the improvement of the rice cooker with Xu Changshuai and others in the metalworking workshop, suddenly felt his ears burning.

"I didn't go to pick him up at the station, and the old man is scolding me? That shouldn't be the case."

Touching his burning ears, Xie Wei shook his head.

The old man shouldn't be upset because I didn't go to pick him up at the station.

He touched his burning ears with his cold hands and said to Xu Changshuai and the others, "Although the inner pot is ground smooth, the effect of using it last night was not very ideal. I think it needs to be sprayed with a coating to ensure that it is non-stick and also to help the pot heat more evenly."

The inner pot of the rice cooker in front of the people had a slightly yellowish-brown center area on the bottom.

During the first trial, the rice was a little burnt in the center of the aluminum alloy pot.

In the end, it couldn't be cleaned.

“Could it be caused by uneven heating?”

Xu Changshuai asked Xie Wei.

Technician Sun Shaoliang also nodded: "Aluminum alloy cannot produce electromagnetic induction. Although an iron tray is added in the middle to generate electromagnetic induction and achieve the heating effect, the tray only contacts the center area of ​​the bottom of the pot..."

As an experienced technician, he helped Xie Wei produce and assemble various spare parts and naturally became familiar with the working principles of rice cookers.

Can offer some opinions based on own experience.

"It is possible. The next major step is to enlarge the iron pallet and add coating."

Xie Wei thought about it and spoke.

"What material is used for the coating? Spraying or electroplating? Or other processes?"

Xu Changshuai asked again.

Only after they understand the process can they prepare better.

"I'll have to ask the Chemistry Department first."

Xie Wei certainly knew what to use as coating material.

Polytetrafluoroethylene (PTFE), chemical formula (C2F4)n, also known as Teflon, commonly known as the king of plastics.

The most common and cheapest coating material for rice cooker liner, which can be used for a long time at 180~260℃.

Xie Wei is more familiar with the preparation process.

When preparing AES, it was taken into consideration that polytetrafluoroethylene, like AES, requires hydrofluoric acid. In the laboratory, Xie Wei guided Kang Yi to help "improve" the hydrofluoric acid preparation process.

In addition to polytetrafluoroethylene, PFA (perfluoroalkyl compound), stainless steel, ceramics, nano-coatings, etc. are also common coating materials for rice cooker inner pots.

Ceramics, stainless steel, nanomaterials, etc. have high requirements on craftsmanship and high costs, and are used in high-end applications. Xie Wei does not think that this is suitable for the current situation.

After developing polytetrafluoroethylene, we can further develop perfluoroalkyl compounds (PFA). PFA has similar properties to Teflon and has a wider range of uses: semiconductors, automobiles, medical care, chemical corrosion protection and other fields.

Xie Wei planned every step carefully, and did not just do it casually.

Everything we are doing now is the basic materials and technology for the big projects to come!
When the funding is sufficient and various basic facilities are complete, the scientific research team will have rich experience.

"Do you have a grudge against fluoride? Why are you working on something related to this? Can't you work on something else? There are more than just these types of chemistry!"

When Kang Yi heard Xie Wei talking about polytetrafluoroethylene, he was overwhelmed.

I originally thought that Xie Wei's arrival at the Chemistry Department would bring him unprecedented wealth.

After Xie Wei developed AES, everyone in the entire chemistry department was busy researching and developing various chemical materials needed for dishwashing detergent!

Now that the detergent formula has stabilized, we can allocate manpower to carry out other chemical research.

As a result, Xie Wei came again!

(End of this chapter)