The door of the courtyard house has been welded dead

The second floor.

The terrazzo floor was mopped clean enough for the mirror to be used.

The entire corridor was empty, and the sound of Li Feng's footsteps going upstairs could be heard clearly.

"Xiaogui, go check and see if the stuff has been delivered~!"

In a high-standard laboratory, behind a glass partition, Ran Qilin was carefully preparing special chemicals for experiments. Wearing the same white coat and mask as a doctor, he felt a bit like a scientific researcher.

Outside the glass partition, several seed players who had been transferred to the steel rolling mill, a number of college students in this era comparable to Big Bear, carefully watched Ran Qilin's operations through the glass. The notebooks held in their hands were densely recorded with various symbols, and corresponding data.

After hearing the instructions from his supervisor, teacher and professor, one of the young people looked at the last step in a daze, then hurriedly opened a door, took off his white coat and mask in the passage, and then went out. Two doors.

In the corridor, Li Feng looked east and west. As a result, it was a little different from the previous office building corridors. The windows near the corridor were all sealed, and even the dormer windows above the doors were sealed. , can't see anything.

"Well done~!"

It was also the first time that Li Feng entered the building that was required to be renovated. He took a general look and was quite satisfied.

Compared with the formal laboratory building behind, it is definitely not even comparable to the one in the university, but this is the wealth that he has accumulated little by little.

"Hello, may I ask..., Li~Deputy Director?"

Looking at the guy who was looking around furtively, this classmate Xiaogui's eyes were a little cautious, and he didn't recognize him until he turned his head.

He is the one at the top in the newspaper and in the photos of the factory party committee.

Li Feng also heard Ran Qilin's voice. He could only say that the sound insulation effect of the wooden door was very poor, and nodded to the classmate.

I turned the wooden door over and looked left and right.

"I'll tell Liu Guangqi later and install an iron gate on the stairs. If Ran Qilin holds it, no one else should give it to him~!"

If he wanted to replace the wooden door, he would have to have someone measure it. Not to mention the time wasted, the installation workers might leak the news. Since the decoration was completed, Li Feng didn't plan to change it, so he just made do with it.

Install an iron fence underneath to seal the stairwell, and add the steel bars on the windows. It will take a lot of effort to get up.

"Okay, okay~!"

"Is he in there?"

Seeing that there was another door inside, Li Feng also picked up the white coat on the hanger in the passage, preparing to put it on and go in to take a look.

"My shoes need to be cleaned, and there is an electric fan here. I need to blow the dust off my body. I'll go in and inform Mr. Ran~!"

Seeing that Deputy Factory Director Li had returned to China and was still in front of him, this college student had obviously not had the chance to fall into the trap of flattery. Seeing that he was about to break into the experimental area, he was obviously quite unhappy and hurriedly reminded him. road.

The rules set by Professor Ran must be followed. If the dust inside reaches a certain level, it will affect the experimental results. However, as a start-up and relatively weak team, they cannot accept this.

"No problem, you go notify me and I'll do it myself~"

Even at Li Feng's level, he would not be serious about this. He would do whatever he wanted when others reminded him. After all, it was all for the sake of results. The more cautious they were, the happier he would be.

There is indeed an electric fan in the corner of the passage, and it is a Watson brand. Deputy Director Li did not have one at home, but there is such an electric fan here. It can be seen that Liu Guangqi has really tried his best.

"After mixing 200g of ferric chloride, 300mL of nitric acid, and 100mL of water, let it stand for a few minutes and observe the color change. Most steel materials can be etched or wiped at room temperature for 1 to 5 minutes. Various comparison groups, Make good records~!”

"60 mL of nitric acid, 200 mL of hydrochloric acid, 50 g of ferric chloride, 30 g of ammonium persulfate, and 50 mL of water. After preparation, it is suitable for precision alloys and high-temperature alloys. The experimental steps use room temperature etching, and the control group...!"

As soon as the inner door opened, Ran Qilin's steady voice was much clearer than before. He knew from the first glance that he was teaching these college students to test the ratio of solutions.

This process sounds easy to say, but the light nitric acid made Li Feng gnash his teeth and wonder if it was time to equip him with fire extinguishing equipment. Just considering the need for confidentiality, the personal safety of these talents must also be considered.

The experiment can be done slowly, people, Li Feng can't afford to lose anyone, his family's financial resources are too thin, he still has to find a way to kidnap some people from where to come~!

Ran Qilin, who was inside, also heard the students' greetings. After the explanation, he came out from the glass partition with glassware and placed it on the table for the students to observe the chemical reaction. He took off his rubber gloves and looked towards The direction of the door.

"Let him come in~!"

Although the voice was unusually calm, Li Feng always felt that something was wrong when he listened to it, as if he was not very welcome to his arrival.

"Busy now?"

After putting on a white coat and a mask, Li Feng entered the door, said hello stiffly, and began to observe around the experimental area.

Inside the glass partition, you can see rows of cabinets and refrigerators. There are some cabinets with curtains installed to protect them from light, and some without curtains. You can see bottles and cans inside.

There are brown, white, and green glass bottles with various warning words on the white labels, and some even have a simple and clear skull logo, which looks very eye-catching.

Outside the partition, pieces of finely polished alloy material were cut into uniform sizes and placed on the table. After processing, they had entered various partitions. It looked like that.

"Hmm~!"

Ran Qilin took off his rubber gloves and put on a pair of clean labor protection gloves again. He responded to Li Feng's greeting in a perfunctory manner.

Then he took out a small piece of steel that was standing still on the shelf. The same eyepiece that Xu Damao used when observing the film was stuck on his right eye, which was still a magnifying glass, and he started observing the surface of the material.

Some of the other students were watching the reaction of the solution, and some were secretly glancing at Li Feng from time to time. They wondered why their professor had an intriguing relationship with the deputy director.

But it was uninteresting. He grabbed the person by force, and the carrot and stick flew up, almost hitting him with a baseball bat. Only then did the stall roll out smoothly.

"No. 73, the experiment failed~!"

"No. 74, not ideal either, failed~!"

In the absence of a metallographic microscope, we can only use this stupid method, trial and error step by step, until we get the right step.

Materials science is the foundation of industry and the teaching material for all industrial production technology foundations. It is the first chapter. It is a subject that cannot light up the science and technology tree in an instant. It is impossible to learn it out of thin air and then immediately enter the production stage.

Officially launching the project is the last step. Before, we could only wade across the river, or follow the footsteps of others and wade across.

The reason why I chose Ran Qilin was because he graduated from the Ivy League. Whether he admits it or not, the knowledge he learned at the university and the experiments he did have already eliminated some wrong branches.

What is saved is huge funds and, for Li Feng and the entire new country, more expensive time.

If someone screams and says that so-and-so has a very dangerous "baseball bat" hidden in his home that can beat people and vomit blood, then the best solution is not to deny it, but to actually have this baseball bat that can hit people. "Baseball Bat".

This is what Li Feng experienced personally when he was a student, and it is still the same in the current external environment.

Get on the horse as soon as possible and move the things inside the caves in remote mountainous areas. Only then will the various equipment copied from the past be delayed. Pull the pause button and the money saved can be used in more places.

Looking at the pieces of test materials on the shelf, only Li Feng knew how important they seemed to be to this land that stood up in the face of difficulties.

The two of them didn't talk to each other for more than two sentences. One continued to do experiments, and the other went back as he came.

If you are a two-knife bricklayer, you can probably tell by looking at the seams of the tiles. If the tiles are pleasing to the eye, their general skills will not be too bad.

Although he only saw one test area, Li Feng felt that there was nothing wrong with Ran Qilin... (End of Chapter)