Song Weize was already dissatisfied with Du Youwen, and asked him to apologize to Qin Zhenhua, now, if Qin Zhenhua calls to complain, then go back, Song Weize may really come to a disobedient excuse and kick him out of the R&D room, so now he can only agree to the other party's request.

Wait a minute.

"This torque converter has oil in it, why did you let me get it again?" Du Youwen reacted, are you bullying me for not understanding technology?

If it is a hydraulic transmission system, including the gearbox, it is necessary to drain the oil before it can be disassembled, but this hydraulic torque converter is not, the lubricating oil is sealed inside, integrated, and the inside is intact.

"Before dismantling, there was oil in it, and after it was disassembled, the oil in it must be lost, and I also had to map and copy the same type of torque converter, don't you need oil?" Qin Zhenhua said: "When you sent me samples, didn't you think of this layer? Do you go or don't go? ”

If you don't go, I'll call Song Weize, Qin Zhenhua put on this gesture, and Du Youwen is also out of line: "Okay, then I'll go." ”

When Du Youwen pushed the trolley away, Qin Zhenhua was extremely excited, and pounced towards the torque converter, this thing had only been seen in books and magazines before.

If in terms of the direction of power transmission, first through the shell, then into the lock-up clutch, then the turbine, the guide wheel, and finally to the pump wheel, it seems to be a very simple structure, and the West began to use it in the fifties, but in China, it has not been able to do it, the main problem is that the accuracy is not reached.

This thing is very heavy, an iron lump, and there is hydraulic oil in it, Qin Zhenhua doesn't expect to use his own strength to push it into the workshop, there are ready-made tools, it's a big deal to get on the forklift.

He couldn't take care of Du Youwen anymore.

In the morning, I heard that Zhao Guodong went to negotiate, and then Zhang Xiangyang forked the machine tool back and put it in the most spacious position in the workshop, waiting for Qin Zhenhua to operate it.

However, there is no need for it now, after all, the first step in surveying and mapping imitation is to disassemble the surveying and mapping.

When it was found out that Du Youwen sent it over, of course, he had to unceremoniously use his labor force again, and the people in the R&D room would be amazing? Still not to listen to me? Now I'm helping you.

As for whether Song Weize asked Du Youwen to apologize to himself, Qin Zhenhua really didn't know, Qin Zhenhua couldn't look down on such a guy.

"This thing looks so weird." Wang Erzhu on the side said to Qin Zhenhua.

When he heard that Qin Zhenhua was going to enter the R&D room, Wang Erzhu was both happy and a little disappointed for Qin Zhenhua, because he knew that he would never be able to enter.

Now, Qin Zhenhua wants to do research in the maintenance workshop, which means that he can work with Qin Zhenhua every day in the future, which makes Wang Erzhule upset, and Zhao Guodong also made a task arrangement, Wang Erzhu is to give Qin Zhenhua a hand, and at the same time, which master Qin Zhenhua needs to help, the master can't refuse.

This is for sure, it really came out, it is the glory of the entire maintenance workshop, this time in the skills competition, Qin Zhenhua won glory for the workshop, and now, the whole workshop is full of energy.

When Du Youwen left, Qin Zhenhua successfully pretended to be forced once, and everyone gathered around and talked about it.

Take it apart, release the hydraulic fluid, and then you can see the shiny structure inside.

One turbine, one guide wheel, these two, are the key structures. Song Weize also pinned the task of copying these two parts on Qin Zhenhua's body.

"Looks like it's been poured." Master Li Changjiang said.

This kind of complex blade was originally thought to be cut out with a lathe, but who would have thought that people would actually pour it directly!

Compared with the two, pouring is of course beneficial, and the cost is greatly reduced! However, to pour to this level of precision, it is simply against the sky.

The surface is shiny and shiny, with a unique metallic luster, although there is a result of washing the internal hydraulic oil for a long time, but if you want to use no metal impurities, when pouring, it must be absolutely smooth and free of burrs.

"That's right, if you want mass production, you have to pour." Qin Zhenhua said: "If we just copy one, then we also have a stupid way." ”

"What's the solution?" Luo Rongchang asked.

"We use a lathe, cut out the blades, then pour the shaft in them, and then weld the blades on." Qin Zhenhua said.

If you make a single one, you can use a stupid method, if it is manufactured in large quantities, it will be poured, but after hearing Qin Zhenhua say this, Li Changjiang disagreed: "If you make blades and then weld, you will have higher requirements for the accuracy of welding, right?" ”

This is different from the armor steel plate of the welded tank, the error is estimated to be on the order of 0.001 cm, and it is not easy to weld to this extent, it is better to pour.

"However, if it is poured, it is not easy to reach this level, and if it is poured, you can't use CNC machine tools, right?"

CNC machine tools, how to use them? This thing can improve the machining accuracy, but in the face of this complex structure, it is estimated that it is difficult to move the knife.

"Of course it's useful, CNC machine tools, used to process pouring molds." Qin Zhenhua has already made up his mind in his heart, since he wants to copy and map, he must be able to use it in large quantities, and he can only make one or two, so what's the use?

The research of the process is done by yourself. The book I just read is about the casting process, first accurately establish the model of the blade, then use the CNC lathe to process the mold, and finally pour, you can get the same imitation.

Of course, this is only the first step in a long journey, and complex tests are needed to ensure that the same mechanical strength as the original tested imitation product is carried out.

Moreover, the biggest problem with surveying and mapping imitation is that if you know what it is, you don't know why it is, you can only imitate it as it is, and if you want to improve it, you can't do it.

While he was studying, a panting voice came from outside: "Okay, the hydraulic oil is here." ”

Torque converter, need to use a trolley, this barrel of hydraulic oil, just use a bicycle, this era of 28 bicycles, can be used as a car, but, only hang a barrel of hydraulic oil, the rear frame is biased, riding over that is called a not easy.

Qin Zhenhua just glanced at it and vetoed: "What you brought is gear oil!" The model is wrong! I want HS grade hydraulic fluid! ”

What the?

Du Youwen, who was tired like a dead dog, was dumbfounded all of a sudden, are you kidding me?

"Hey, why didn't you say it in advance?"

"I'm obviously talking about hydraulic oil, besides, don't you guys in the R&D room understand this kind of small problem? Although it is connected to the gearbox, there are no gears in it, what kind of gear oil is used? It works by hydraulic pressure. ”

After speaking, Qin Zhenhua said to Wang Erzhu very domineeringly: "Erzhuzi, give Lao Song a call, do they understand the difference between gear oil and hydraulic oil in their R&D room?" ”

All the teachers showed meaningful expressions on their faces.