It is difficult to find this in scientific magazines. It is only done by certain institutes in certain countries, or it should not exist.

Some institutes in the five major countries have been studying this stuff all year round. Ji Dongqing didn't expect that his graduate student would be left here directly. He knew he would never come.

Generally speaking, this kind of metal is used in special environments, such as ultra-high temperatures, single environments, and protection.

Just like Ji Dongqing's shielding room, there are a large number of rare metals in the material, which are specifically designed to directly shield various signals. In fact, the shielding is to form some kind of reflection.

At that time, this metal was also a critical metal, but the technology has matured and it has been wrapped with several layers of media.

Ji Dongqing studied these obscure documents carefully, and occasionally asked Senior Brother Yi, but the other party only gave some answers in a few words, and then continued his research in a hurry.

Sometimes he really didn't understand, so Ji Dongqing went to see Mr. Zhong. Mr. Zhong's advice was very simple and crude. He simply threw away a book or magazine and said, "Go and study it yourself."

"I know why I still need you to study as a graduate student. I'm a fool!"

Although he was dissatisfied, Ji Dongqing had to admit that he had made rapid progress in fifteen days, and his knowledge of this material and the whole material had greatly improved.

"Try it out and see if the welding of this metal is reliable. If it can't be completed this year, we can only accept conservative connection methods, which will cause our costs to increase massively and shorten the service life of the equipment. You try

Just give it a try!”

Half a month later, Mr. Zhong pointed to the equipment in front of him with a solemn expression.

In front of it is a large glass cover, with two pieces of metal inside. In front of Ji Dongqing are two handles and several knobs.

“Can’t hand weld?”

"No, you have also seen these two materials. Their properties are very different. The arc generated is too harmful to people. Some of the damage is irreversible. You have to pay attention! And you can't weld this kind of metal for more than two hours at a time.

Otherwise, even with the current protection, it won’t work! Our current conditions can only do this. You have to pay attention, we don’t have much metal on hand, so you should try to operate it carefully!”

Patting Ji Dongqing's shoulder, Mr. Zhong led the students back. Ji Dongqing raised his eyebrows, thinking that he still had nothing to do when he knew it was not easy.

Thinking of this, Ji Dongqing put on protective glasses.

He held the handle with both hands and operated it for a few times. The equipment was still very easy to use. Precision is not an exaggeration. Ji Dongqing stared at the screen closely, and the welding gun slowly approached the metal joint surface.

According to the data, this material still has a traditional structure. The main body has three layers, the innermost layer is a stable layer, the middle is a critical metal, and the outermost is another metal. Ji Dongqing doesn't know the names of these metals.

The innermost layer is iron-based and contains chromium, the outermost layer contains lead, and the middle layer is the strangest, containing molybdenum and another metal substance. Ji Dongqing has only seen it in books before, and has never welded it before.

"Zi..."

"Nonsense, who can adjust such a large current!"

The first shot welded through, Ji Dongqing turned the fine-tuning button several times, and then tried again. The current was still high, so Ji Dongqing directly adjusted the current to the bottom, and then adjusted it in the opposite direction.

"Zi..."

"This is more or less the same, the angle is wrong!"

Ji Dongqing adjusted the handle, changed the angle of the welding gun, and then began to continue welding.

"call!"

"Snapped!"

After the first layer of metal was welded, Ji Dongqing started to weld the second layer of metal, and now Ji Dongqing was confused again.

"Holy shit, there's such a huge difference in temperature!"

Ji Dongqing adjusted the knob to the maximum, and then gradually adjusted it back until it was not far from the peak value and the metal melted.

"Huh, who designed this thing? What the hell..."

Ji Dongqing changed the welding wire again, and for the third time, Ji Dongqing directly slapped the protective cover hard.

"Damn it, I'm angry!"

"ah?"

"Fire roasting, you have to fry each one of them!"

The outer skin adjusted the current and angle three times in succession, and after walking two centimeters, the metal exploded at a speed visible to the naked eye.

Ji Dongqing has never felt this kind of torture. The contrast between the three layers of metal was so great that Ji Dongqing didn't want to graduate.

For five consecutive days, Ji Dongqing tried various methods, but was still unable to mesh the three metals together.

"call……"

Standing in the lounge smoking, Ji Dongqing repeatedly thought about all the cases he had encountered. It seemed that there was no way to mesh metals with such different properties together.

"Snapped!"

"Why, have you lost confidence?"

In the smoking room, looking at Ji Dongqing's cold face, Mr. Zhong rolled a cigarette and came in.

"That's not true. There are just some things that I don't understand. I have encountered more situations than this. The first time I welded cast iron, I cracked it countless times. Then I bought a cigarette and found a master. The master

He taught me, and I didn’t know what carbon content was until I read a book in school! It wasn’t until I got to college that I learned that not only the carbon content, but the content of other things can also change the welding properties of metals!”

"Of course not only metals, but also plastics and other plastic things have this property. I just don't quite understand how this happens, and now my mind is in a blur!"

Ji Dongqing took a few puffs of cigarette, feeling unconvinced all the time. He always felt that he didn't notice something, and he couldn't figure out what the problem was.

"As long as you are aware of it, you can go outside for a walk if you have nothing to do. Your kid has already practiced his main direction well. You can also go to the library to have a look. Xiao Yi has already arranged a library card for you. Although here,

It’s not as good as the welding at the University of Technology, but the books are still enough, so go and change your mind!”

Looking at Ji Dongqing's solemn face, Mr. Zhong nodded secretly, thinking that he had found the wrong person.

Ji Dongqing went out and collected various cards from Brother Yi. Of course, some cards cannot be taken out casually.

For example, you need to hand over the entrance card to the laboratory before going out. When you come in, the doorman will give it directly to Ji Dongqing, and Ji Dongqing will hand over the card to the outside door and simply clean it before entering.

"Mr. Zhong, is he okay?"

Watching Ji Dongqing leave, Senior Brother Yi rolled up a Yabuli cigarette for the rest of his life.

"He has this kind of energy in him. If we lack this kind of thing, we will be in vain. Any lack of experience can make up for it. This kind of energy cannot make up for it. Everything requires mental energy, especially people like us. He is

This is what you do!"

The dry cigarettes they rolled were thicker than a thumb, and when they smoked the cigarettes, the whole house smelled spicy.
Chapter completed!