Chapter 1210

It's no wonder that several responsible persons of aeroengine manufacturing plant present have such an idea. In fact, there is a big gap between China and European and American aviation powers in terms of nickel base alloy smelting and preparation.

Let alone them, they are the two brand-new aeroengine metal materials, X and y, which are based on nickel base alloy and rare high temperature resistant metal elements such as rhenium. Even if they have made good progress, they will have to wait at least five years for them to really mature and put into use.

After all, there is still a big difference between laboratory preparation and large-scale industrial production. X and y are two brand-new aero-engine metal materials. As industrial products, they must have the attribute of large-scale mass production. We can get a few samples in the laboratory and make a few limited amounts. That is not industrial products, but luxury goods.

At present, X and Y two brand-new AFC metal material cards of Tengfei group are stuck in large-scale industrial preparation.

Even Tengfei group is like this, let alone other aviation development plants. It can only be worse. Otherwise, it can't buy so-called "domestic" goods from Russia and Ukraine.

Because of this, when they know that there is a new product that can surpass the nickel base alloy material without any improvement and complete the temperature leap in front of the Aero-engine Turbine, the heads of several aero-engine manufacturers are as excited as the pure boys who met the goddess bath.

It's just that the excitement returns to the excitement, but the people in charge of these aviation development plants are not stupid. No matter how good the things of Tengfei group are, we should find out whether they can be industrialized on a large scale. Otherwise, to make X and Y alloys advanced, it's almost useless for an enterprise like them, which is eager to transform benefits.

So the person in charge of the aviation development plant who asked a series of questions just now was surprised, but at the same time, he was also asking Zhuang Jianye in another way about the feasibility of this kind of high-pressure turbine guide vane made of zbf-600 material. It's not interesting that it's customized by any laboratory!

Zhuang Jianye is a wild fox who can be treated as a monkey by sticking his hair on it. Naturally, all the people around him can see the changes in their looks. So he doesn't talk nonsense. He takes another guide vane from the staff nearby, and then takes out two exquisite pins at the bottom of the two outer support plates which are similar to the tenon and mortise structure of woodworking With a terrified hand shaking as like as two peas in the air, the core of the blade was drawn from the guide blade and the core was exactly the same as the blade shape and with a dense cooling hole.

At the same time, Zhuang Jianye said slowly: "I will first answer how our guide vane solves the problem of insufficient structural strength and ductility of ceramic materials..."

Then he pointed to the metal core that he had pulled out most of: "our method is very simple, that is to add a set of metal skeleton to the ceramic material, which is a bit similar to the honeycomb core in the honeycomb material commonly used in our aviation industry, and can play a role in supporting the ceramic blade shell.

However, due to the characteristics of ceramic materials and the harsh working environment between the aero-engine combustion chamber and the high-pressure turbine, the simple fixed honeycomb structure is not enough to reduce the impact of high-pressure gas turbulence, and needs to offset greater impact potential energy. Taking the 17MW power of our 2.5 generation core engine as an example, the temperature in front of the turbine reaches 1728k, that is, 1454 ℃, which is the high temperature of the combustion chamber The impact force of heat flux is 9.05 × 10 6 MPa.

Such a strong impact force can not be supported by the general honeycomb structure at all, so we have added a layer of metal wave spring on the outside of the metal core, so that when the outer ceramic blade is impacted by the high temperature heat flow, the wave spring can reduce the internal potential energy, and finally withstand the damage of the high temperature jet to the whole blade under the support of the metal core. "

As Zhuang Jianye said, he pulled out a stack of folded metal sheets that were attached to the outer layer of the metal core like origami, and then stretched back and forth to show the audience, and then said: "this is like the ancient heavy armor soldiers. Ceramic materials are extremely defensive armor, and wave spring is muscle and soft tissue, the innermost metal core It's the supporting bone.

Only by effective cooperation of the three can the soldiers perform well. Our guide vane is the same. Thanks to the organic combination of three different parts, our guide vane's ability to resist high temperature and high pressure has been doubled. Not to mention, the cooling air flow has also been reduced by 25% compared with the previous second generation core engine, so as to improve the efficiency of turbine work. "

Zhuang Jianye's introduction can be described as no details, and several persons in charge of the aviation development plant who are interested in it listen carefully. However, before Zhuang Jianye finished, one person in charge asked, "Mr. Zhuang, according to what you just said, the inner metal core and wave spring should be made of nickel base alloy. I don't know whether the requirements of this nickel base alloy are high?"

"Not high!" Zhuang Jianye waved his hand and replied with a smile: "it's not high at all. Just use the nickel base alloy material on our turbojet 13 engine, that is, the second generation nickel base alloy made in China. It doesn't use any single crystal material at all. After all, the worst high temperature is blocked by ceramic materials. Naturally, many good materials are used to support the interior. Otherwise, we can't make this set of ceramic armor What's the usage?It's just to avoid the bottleneck of our own metallurgical field of metal materials and reduce the cost as much as possible. Therefore, leaders should pay attention to this point. As long as they have done the matching of vortex jet 13 and have the experience in the processing and production of the second generation nickel base alloy, they can help us to produce some metal cores and wave springs in Tengfei group. It's no problem at all! "

After listening to this, those who are already interested in the air power plant executives feel that the heart in Dong's chest begins to thump. This is not interested any more, but can not restrain the rhythm of the heart.

Turbojet-13 is one of the few projects that can be completely implemented in China's aviation development. Many aviation development plants have participated in it more or less, and even some of them are the production and processing units of turbojet-13's second-generation nickel base alloy thermal components. They have a lot of experience in processing the second-generation nickel base alloy.

Therefore, it is said that the metal parts inside the guide vane in Zhuang Jianye's hand are so simple. Are you eager to try it?

You should know that this is the core component of the world's first-class aeroengine. To be able to participate in it is to compete with the advanced products of the world's aeroengine giants. Not to mention how many domestic gaps can be filled or how many advanced patents can be obtained, the fact that we stand side by side with the world's aeroengine giants alone is enough for these responsible people to boast in their year-end reports.

Another manifestation of this kind of big blow and special blow is the political achievements that they dream about.

They press the Tengfei group, grab the project, dig the wall, and even do the disgusting thing of buying "made in China" from Russia. For what? It's not about "achievements.".

Now, Zhuang Jianye has put such an easy thing in front of them. If they don't grasp it, it's really unbearable!

However, when these responsible people began to think about how to get the processing and production of metal core and wave spring of guide vane into their own factory, Zhuang Jianye's next sentence made the responsible people who just had this idea have a big chill in their hearts:

"by the way, I almost forget that this set of metal core and wave spring processing must not be used Little Japanese equipment, none of those rags can meet the accuracy requirements, all TM's are pit goods