Chapter 732

It's no wonder that this old expert from the energy department is like this. The values on the detection equipment are consistent with the basic metallographic composition of the materials on both sides.

In other words, the parts of two different materials are processed by the alternative nb-250 to form an integrated binding force with magic effect.

If you don't see it with your own eyes, it's not too much to say that two kinds of materials are born together.

So that all the data features are not inferior to the high strength and high reliability of the material itself. Even after a little polishing, even the weld can not be observed with the detection equipment, let alone the naked eye.

This kind of Blisk is made of five axis and seven axis linkage, which will definitely make people believe.

But the problem is that the five axis and seven axis linkage can only process a single alloy material, but the whole blade in front of us uses two different titanium materials.

One is titanium alloy, the other is carbon fiber reinforced titanium matrix composites.

No matter how strong the five axis and seven axis linkage is, it is impossible to combine the two materials for integrated processing. What's more, the five axis and seven axis linkage can be made into solid blade or hollow blade. The center is hollow, and the surface is closed wide chord hollow blade. The five axis and seven axis linkage is really more than enough.

In the future, the important development direction of aeroengine and gas turbine is integral bladed disk and wide chord hollow blade, which can not only reduce the overall quality of aeroengine and gas turbine, but also improve the service life. More importantly, the efficiency of compressor using these two technologies will be doubled, so that the air pressure ratio will be increased, the intake flow rate will be increased, and the fuel will be fully burned.

In this way, the thrust of the engine will be increased when it is applied to the aeroengine, and the thermal conversion efficiency of the gas turbine will be improved when it is applied to the gas turbine.

The problem is that it is very difficult for such good two technologies to combine to play the role of application. If they are produced separately, the overall effect will not be achieved; if they are operated as a whole, only one kind of material can be used, and local optimization cannot be achieved.

What's more, there is a fatal processing problem in the end.

Therefore, Ge, RORO and Pratt & Whitney are taking two technological routes. One is the integration route led by GE.

That is to say, high quality titanium alloy is produced by using the super strong material and metallurgical technology of the United States, then the hollow integral compressor blank is made by using the casting technology, and finally the integrated machining is carried out by using the seven axis linkage machine tool.

The other is a segmented combined technology with Pratt & Whitney as the core, that is, the wide chord hollow blade and rotor are produced separately, and then the two are combined by vacuum diffusion welding or vacuum electron beam welding.

The two technical routes have their own advantages and disadvantages, but without exception, the cost is surprisingly high.

Needless to say, whether it's five axis or seven axis linkage, it's money to start. If you take into account the previous overall casting process, the cost of an integral blade disc will almost catch up with that of a previous jet.

Pratt & Whitney seems to be good. The problem is that the welding process is extremely complex. It requires either a vacuum environment or expensive fillers as the medium. The problem is that with these things, the yield is not high, and the high scrap rate indirectly increases the cost.

Because of this, these big technology giants are basically used in military products that only buy the right products, regardless of price. After all, the military pursues leapfrog technological advantages. Money is nothing compared with winning. In particular, the U.S. military, which is rich and powerful, has a local tyrant's obsession in this respect.

However, it is such a technical problem that even the giants of domestic and foreign aviation engines have a headache. Tengfei group has solved it with one equipment.

There is no five axis or seven axis linkage on the high structure, and there is no complicated welding equipment. It is just a way similar to friction welding to achieve the best technical effect of the blisk. This ability It's really

"Our Tengfei group has never been the kind of enterprise that can only follow people's buttocks to imitate, and we will not be complacent with other people's things as if they were children's building blocks. We feel that our ability is too big. What we do is always subversive. If we don't have this backbone, we will talk about the four modernizations and the prosperity of our country."

Just when experts in the energy sector marveled at the subversive technological ability of the nb-250 of Tengfei group, Zhuang Jianye's words rang out again in the workshop.

Many experts were immediately embarrassed, especially Cai Weiguo, who had previously ridiculed Zhuang Jianye and Tengfei group. His face was blue and red.

It is obvious that what Zhuang Jianye said was Jinling steam turbine plant, which would benefit them. Cai Weiguo, who originally wanted to take this opportunity to introduce nb-250 back to Jinling steam turbine plant, did not even have the least chance to open his mouth.

This is because Zhuang Jianye does not belittle Jinling steam turbine plant any more. Instead, he does not pay attention to Jinling steam turbine plant at all. In other words, in Zhuang Jianye, Jinling steam turbine plant and other joint ventures cooperating with foreign giants do not even have the qualification to be equal to him.

In this case, the leaders and experts of the energy department of Tengfei group who have benefited from the joint venture and run on them are not qualified to comment here.In other words, Zhuang Jianye's reception is to give you face. Whether you come or not has nothing to do with Tengfei group. If you like to lick the butt of foreign giants, you will lick it. Tengfei group will not accompany you.

All the people present are not fools. If Zhuang Jianye can't hear what he said, he doesn't have to sit in his present position. So, including the leaders of the energy department, the whole research group is one by one, with ugly faces.

Even the head of the headquarters didn't look very good, so he couldn't help it. This time the energy department came to investigate, he asked people to come. As a result, Zhuang Jianye not only didn't give face, but also said such extraordinary words. What does this bastard want to do? To abandon the industrial gas turbine business completely?

"Comrade Zhuang Jianye, if I understand correctly, you really criticized the practice of our department just now?" When the head of the headquarters was thinking about how to help Zhuang Jianye recover, the leader of the energy department suddenly laughed and asked.

Zhuang Jianye also laughed: "leader, you see what you said, how can I criticize your department? I'm a business man. I'm here for business. I'm talking about business. I'll make friends with you if we don't make friends. "

If the above words make people think that Zhuang Jianye is nervous, then one of the people present thinks that this guy is crazy. This is tantamount to completely cutting off the cooperation with the energy department and the market. Does Zhuang Jianye really think that with the subversive nb-250 equipment, he can surpass the market and dare to challenge the energy department of large gas turbine users?

You're kidding!