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Chapter 1209 Can we also do import substitution?

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    As Zhuang Jianye spoke, he put the huge guide blade in his hand into the hands of the person in charge of the aircraft engine manufacturing plant in front of him. The person in charge of the aircraft engine manufacturer was really surprised, because the guide blades looked quite small and fragmentary.  The whole thing is about the size of half a forearm. In addition, this thing is directly facing the so-called high temperature in front of the turbine between the combustion chamber and the turbine. It is usually made of nickel-based alloy with complex cooling annular channels.  It is manufactured and is not as light in weight as ordinary aviation parts.

    So when Zhuang Jianye suddenly came over, the person in charge of the aircraft engine manufacturing plant was really shocked. If he didn't catch one, who would be responsible if he fell to the ground?

    It doesn't matter if it's just him and Zhuang Jianye. If you can't catch it, you can't catch it. Anyway, this thing doesn't belong to him. The problem is that the chief engineer, deputy director and many other heads of brother factories are here at this moment.  No matter how bad the person in charge of the aviation engine manufacturing plant was, he still had to maintain a certain image, so he was really shocked.

    But in the end, when he really got it, the person in charge of the aviation engine manufacturing plant, instead of being angry because of Zhuang Jianye's reckless behavior, instead held up the huge guide blade with one hand and his eyes were full of disbelief, and his lips trembled twice: "How can it be so easy?"  ?¡±

    Yes, in the past, guide blades made of complete metals such as nickel-based alloys were not much heavier than steel of the same volume, but they were not much lighter.

    Even if you admit that you can pick it up easily, you still need to use some strength to support it.

    But although the shape and volume of the guide blades in hand are no different from those in the past, the overall weight is at least one-third lighter than traditional nickel-based alloy guide blades.

    You must know that the person in charge of the aircraft engine manufacturing plant who holds the guide blades is working in a factory where the main focus is on the core thermal components of aeroengines such as guide vanes and turbine blades, because he not only understands the weight of such components  Heartfelt and extremely sensitive.

    As soon as you get started, you will know that the products of Ascendas Group are much lighter than the products of their factory.

    With the same volume and shape, it can still be so light. What does this mean?

    ? First, a decisive breakthrough in materials, and secondly, a disruptive innovation in processing technology. Neither one of them will work.

    However, before the person in charge of the aerospace engine manufacturer could recover from the light guide blades in his hands, another person in charge of the aerospace engine manufacturer snatched the guide blades over and looked at them over and over again.  After a while, that's not all, he actually called his assistant over, took out the magnifying glass he carried with him and carefully inspected the surface for a while, then looked up at Zhuang Jianye and asked in disbelief: "You actually have something on this blade?"  No cooling holes? Directly use the material itself to resist? Even ceramic materials can have strong resistance to high temperatures, but in atmospheric environments, the oxidation resistance of ceramic materials is very poor, and its ductility is even worse.  The combination of the two results in a strength that is not as strong as different low carbon steels. At the same time, the heat flow just ejected from the combustion chamber is fierce and unstable, and the impact is very strong. How did you do it? Not only that"

    I don¡¯t know if the person in charge of the aircraft engine plant was really surprised or out of curiosity. He took the guide blade and asked Zhuang Jianye a series of questions, which confused the other person in charge of the aircraft engine plant around him.  But no one came forward to stop it, including the deputy director and the person in charge of the aircraft engine manufacturing plant who was quarrelsome with Zhuang Jianye.

    The reason is simple, because they also discovered that there are really no complicated film cooling holes on this guide blade.

    When they looked at the wd-66 high bypass ratio turbofan engine before, this detail had not been noticed by them. It is not that they did not look carefully, but that this type of film cooling hole itself is extremely small, and the temperature is high when the aero engine is running.  Different degrees of oxidation reactions will occur during the impact and burning process, causing the surface of the leaves to become dark. It is very slow to identify the location of the air film holes, so it is normal not to notice.

    But now, the blade that Zhuang Jianye took out was brand new, with no traces of burning or oxidation. Naturally, it would be noticed by veterans in the aviation field like them at a glance.

    But precisely because of this, except for Zhuang Jianye and the old chief engineer, everyone present was shocked. The guide blades facing the temperature in front of the turbine did not have a film cooling hole, and were directly hardened with the material itself.  Eat in temperatures over 1,300 degrees Celsius.

    "Such a simple and crude approach, not to mention the deputy director and others, would find it incredible, even the core aerospace engineers of the three major aerospace giants, General Motors, Pratt & Whitney, and Rolls-Royce, would feel their scalps go numb when they saw it.

    To what extent does the material itself have to be heat-resistant to withstand the absolute high temperature in front of the turbine?

    You must know that the internal structure of nickel-based alloys is no longer stable at 1100 degrees Celsius. If not, it would be impossible for aerospace engineers to startIt has a complex and variable cooling structure like the air film cooling holes, but even so, the temperature will only increase to 1300 degrees Celsius at most, and there is nothing that can be done no matter how high it is.

    Therefore, in addition to further exploring the potential of nickel-based alloy single crystal structure materials, aerospace engineers are trying to maximize this single crystal structure. The rest is to develop heat-resistant coating materials for nickel-based alloys.  The leaves are coated with a skin.

    However, whether it is digging deep into the single crystal structure of the material or applying a layer of skin, the focus is on the nickel-based alloy itself.

    In this regard, aviation powers such as the United States, Europe and Russia are at the forefront of the world, but China lags far behind. There is no way those aviation powers have accumulated in this aspect for more than half a century, accumulated so much experience, and are still  keep going.

    Of course, China also wants to catch up in this aspect. However, the domestic aviation industry started late. The real improvement will have to wait until the first flight of Project 10. It is more than 40 years behind the aviation power.

    And nickel-based alloys are something that requires a lot of experience. Especially the single crystal structure, the ratio of various metal elements, the smelting temperature, the heat treatment procedures, etc. cannot be solved overnight. It requires  The best solution is summarized after decades of testing and tens of millions of tests.

    If this were not the case, how could those aviation powers dare to make the latest metallographic data of nickel-based alloys public as research results?

    We still don¡¯t know the details of this, but we know that even if other countries know the metallographic data, they cannot produce similar products, because the key to this kind of thing is not the data, but the entire production process.

    Of course other domestic aerospace engine manufacturers are aware of this cruel reality, but they have no solution at all. If they want to catch up, it will take them 20 to 30 years at the earliest. In other words, there is no hope for them.  .

    "If there is no hope, there will be no achievements. If there is no achievement, there will be no political achievements. We have reached this position. Who among the dignified central management cadres doesn't want to leave a mark in the future history of the factory?"

    But what should I do if I have that ability?

    As a result, many factories have paid attention to Russia or Ukraine, using their superior domestic aviation engine thermal component manufacturing technology to do OEM work for domestic aviation engine factories, and then get it to the country and affix the factory label as "domestic" installed equipment.  use.

    Of course they are willing to make money, but the problem is that not only the quality control of Maozi is too poor, but the business reputation is also poor, which makes several domestic aerospace plants want to die, but they are still suffering.  Russia and Ukraine only care about money, but the United States and Europe want lives in addition to money, so even if the idiots are disgusting and fucked up, the domestic aerospace plants will just knock their teeth out and swallow them.

    But now, Tengfei Group seems to have found another more promising solution in addition to nickel-based alloys. The heads of several aircraft engine plants present began to feel excited. Since they have had enough of the old Maozi's birdiness, can they  How about import substitution and using Ascendas Group¡¯s products?

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