country made

In any case, although the punishment for cleaning the warehouse is over, Ji Yu and Song Jining are still required to attend class well.Even if Ji Chen said that he was doing an extracurricular experiment, Lin Binliang did not agree. After all, as the head teacher, he was in charge of the students' study and life, and they were not allowed to skip classes for no reason.

"It's good to like to do extracurricular experiments, but in any case, it is not allowed to affect the normal class, even if you think it is boring." This is the attitude of Lin Binliang and other teachers.

The good student Ji Yu honestly admitted his mistake, and since then shortened the research time of the electric explosion foil detonation system, anyway, there is no rush for a month or two.The biggest achievement is still the dismantling of the Conjugate Disc Hot Indium Compression Sealing High Shear Homogenizer, and obtained technologies and ideas that have never been understood before. He will slowly digest the drawings of the parts in the future.

Of course, the happiest thing is that Song Jining has also learned a lot. Ji Yu can clearly feel that after studying the high-shear homogenizer during this period, Song Jining has a more thorough understanding of physics and machinery. Not long ago, we did electric explosions together. During the experiment of the foil, he even used algebra to solve the reaction force of the circular magnetic field of the bridge foil, which was originally a calculation formula of geometric statics.

Ji Yu actually found out that Song Jining was secretly reading behind his back, but since Song Jining didn't want him to know, he pretended not to know, as long as he looked at little brother Song with shocked and admiring eyes, it was enough to satisfy his self-esteem.

However, because of this, although the research time has slowed down, the research progress has actually increased. They have now completed the fifth set of experiments. According to Ji Yu's estimation, they can be completed before the holiday, so the experiments will be carried out outside the normal school hours. There is also enough time.

About a week after the two men finished their labor punishment, Professor Jiang returned from the scientific seminar, along with other professors from the same university.As soon as Professor Jiang returned to his studio, he immediately called all the graduate students he brought over: "Hurry up, bring your tools. Today we have a new class."

Jian Peng and other students didn't know why, so they quickly took their toolbox and went out with Professor Jiang.Passing through the campus, the teaching building, and soon came to a comprehensive building in a remote location, the students couldn't help but guess.

"Huh? Are we going to the warehouse?"

The students are familiar with the warehouse because the laboratory occasionally has changed equipment.

"I don't know. Didn't a batch of old equipment come here earlier? Do you still want to come here for repairs?"

"I heard that those batches are for junior students to practice, so they should have nothing to do with us."

Professor Jiang listened to the suspicious words of the students, showing a complacent expression.

When he went to attend a seminar during his studies, he brought back a conjugate disc hot indium press-seal high-shear homogenizer from the Academy of Sciences there.This high-precision equipment was purchased from the State of Su. It was originally only used in major scientific research institutions and military research institutes. It is generally not available in university laboratories.However, the problem with this high-shear homogenizer seems to be relatively large. It has been repaired several times, and the precision is not accurate enough.Although the problem is not big, the units that use it are facing national-level research projects, and even military projects. It is impossible to use another instrument with problematic accuracy.So taking advantage of the damage, Professor Jiang used his connections to transfer him back to school.

In order to avoid being discovered by other colleagues before he returned to school, he hid it in other old equipment and transferred it back together!

The old equipment in the warehouse of the Polytechnic University is generally eliminated from various laboratories.But elimination does not mean that it is useless. The school will leave these devices to students majoring in machinery or automation for maintenance practice classes.Some good and usable equipment will be sold to the schools in the area below after repairs, and the University of Science and Technology will often buy the equipment from the research rooms above, or use it for teaching practice for students, or for laboratory work.

The Conjugate Disk Hot Indium Compression Sealing High Shear Homogenizer obtained from above this time will definitely be put in the college laboratory for public use, but it is currently in a damaged state. Professor Jiang intends to use it before other colleagues find out. Teach your own students how to repair first.

Such a high-precision equipment does not often have the opportunity to be disassembled and repaired.

Thinking of this, Professor Jiang quickened his pace: "Jian Peng, open the lock."

Jian Peng responded, and went forward with the key to unlock it, when he was stunned: "Professor, the door has been unlocked."

"Huh?" Professor Jiang frowned, and when he entered the door, he saw his colleague Professor Zhao leading a group of students talking in front of an instrument.

The bad premonition came true, and a despicable and cunning guy also ran over to grab the equipment.

"Zhao Dongming, why are you here?"

"Why can't I come?" Zhao Dongming is also a professor at the school, at the same level as Professor Jiang. He teaches control science and engineering, and some teaching content overlaps with that of Professor Jiang.Such as engineering design, mechanical maintenance, mechanical power and so on.Another example is the maintenance of this Conjugate Disk Hot Indium Compression Sealing High Shear Homogenizer, which is in the teaching plan of the two professors.

Professor Zhao originally participated in the scientific seminar with Professor Jiang, and they also came back together.Professor Jiang hid it from other colleagues. Professor Zhao also meant the same thing, so when he came back, he hurriedly brought his students to study, and Professor Jiang bumped into him.

The two gray-haired professors quarreled for a few words, knowing that it would be impossible to monopolize them, so they joined together for class.

After first introducing the purpose of this high-shear homogenizer to the students, Professor Zhao, who has already started teaching, said: "As you can see, this equipment can no longer be started..."

As he spoke, he pressed the start button, but he heard the sound of the machine running and started.

The students looked at him blankly, wanting to laugh but not daring to.

Professor Zhao was stunned, and continued: "Occasionally this happens, but don't think that it is good if it can be started. The real problem with a piece of equipment is not whether it can be started. Zhang Ming, bring some steel plates."

He directed the students to control the machine according to his instructions, to press and cut the steel plate, and said: "As you can see, this equipment can no longer seal the steel plate because of its conjugate disc shaft... "

With a buzzing sound, the machine ran stably without any problems.

Professor Zhao was stunned again.

He looked at the equipment, then at Professor Jiang.He remembered that the machine was obviously broken, and Professor Jiang had checked it, and sent it back directly after confirming that it could not be repaired for the time being.

Professor Jiang also showed a puzzled expression. He stepped forward to turn off the power, took out the Phillips screw and checked various parts, then took a step back and started the device again.

"I'll try it out."

Originally, there was a problem with the connecting shaft of the conjugate disk, which caused the looseness and could not seal the material. When it was started again, it was found that there was no problem at all.That's all, the most important high-precision precision cutting function, the previous research institute gave up using it because of precision errors, but when I used it this time, I found that there was no error at all.

Professor Jiang didn't believe it, he operated it twice by himself, and found that there was no error at all, and even he was stunned.

"Do you think there will be a sudden generosity and send us a good device?" Professor Jiang asked Professor Zhao.

"It's a good idea. I suspect that they made a mistake."

Although they really wanted to get rid of this equipment, it was the equipment of the National Research Institute after all, so the two of them called the research institute over there.But the other side said that there was no mistake, and the broken high-shear homogenizer was sent over.

Professor Jiang and Professor Zhao looked at each other, and they both showed puzzled expressions: "Could it be that someone repaired this device?!"

"No, maybe someone has discovered this device a long time ago, and brought students to class like us."

Thinking of this, Professor Jiang jumped a little. He bought this high-shear homogenizer specially for the students to use in class, and it was actually taken first!

"Jian Peng, check, who has been to the warehouse recently!"

He wants to see who dares to destroy his teaching plan!

Jian Peng soon found out, with a strange expression on his face: "Assistant Zhang, who is in charge of the warehouse, said that no teacher has used the warehouse recently, and the only people who went in and out of the warehouse were two students."

"student?"

"Ji Yu and Song Jining."

"..." Professor Jiang instinctively wanted to say that it would not be them, but considering the excellent performance of the two in the robot competition, he asked, "Where are they? Call them over and ask."

"Teacher, they are in your No. 3 laboratory. Ji Yu said that he plans to write a paper. Recently, the two of them have been studying the detonation method of battery aluminum foil."

"What's that?" Professor Jiang didn't know much about the weapon's ignition system. After asking, he also went to the No. 3 laboratory curiously.

Pushing open the door silently, I saw the two people were immersed in their work, but they didn't notice them coming in.Professor Jiang didn't say a word, and stood behind watching the two skilled movements.If he only looked at their actions, he had to say that these two children were not much worse than the graduate students he brought.You must know that more than half of the four years of undergraduate studies are spent laying the foundation and taking exams, and there is very little practical experience. Many students only really learn how to do it after they are admitted to graduate schools.

Ji Yu and Song Jining's theoretical knowledge may not be as good as that of graduate students, but their hands-on ability is more than enough.

"Is the high-voltage probe connected?" Ji Yu suddenly asked.

"OK." Song Jining replied.

"How much capacitance?"

"[-]uF."

"Discharge circuit resistance?"

"320mr."

"inductance."

"210nH."

"OK, let's start."

With the sound of Ji Yu's start, Song Jining backed away immediately, Ji Yu turned on the power, and at the same time pressed the stopwatch, there was a bang, a spark splashed, and a plastic plate in front was broken down.

Ji Yu looked at the stopwatch and wrote on the research record: "The result of the No. 6 experiment, the detonation speed is 0.02 seconds."

Professor Jiang was startled by the sudden detonation, pointed at them and asked, "What are you studying?"

The two of them were startled by his sudden sound. Ji Yu turned around and saw him, and called happily: "Professor Jiang, you are back from the meeting!"

"Yeah, I'm back." Professor Jiang couldn't help but want to laugh when he saw Ji Yu. Regardless of his appearance or clothing, Ji Yu looked like a very good student at any time, and he was loved by all the teachers. Student template.But when he thought of their experiment, he straightened his face again:

The author has something to say: "Tell me, what's the matter with you, what kind of dangerous research are you doing?"

"It's not dangerous research." Ji Chen didn't care about Professor Jiang's questioning tone, and answered obediently: "It's a research on the energy utilization rate of the electric explosion foil initiation system."

"Electric explosion... what, what?"

Even a professor doesn't know everything, at least Professor Jiang has never heard of the word electric explosion foil.

Ji Chen thought for a while, and changed to a popular term: "Simply put, it is about the research on the explosion of the shock plate and bridge foil in the ignition and detonation systems of the machine cabin, detonator, and shells."

Professor Jiang: "...?!!"