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Chapter 1581 Materials

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    The reason why Zhuang Jianye has such confidence is that, in addition to the cost reasons mentioned above, another key factor is also the basis for everything, which is the large number of advanced technologies and leading process manufacturing capabilities that China Tengfei has mastered.

    The fundamental reason why the cost of Diamond Monkey-2c is so low is here.

    The t-nb525 aluminum-lithium alloy it uses benefits from China Takeoff's accumulation in this field over the years. It has not only formed a complete industrial chain, but also relies on super technology and experience to make the price of this category of materials in the ten-digit range.  dropped by 60% within the year.

    Not only has the European aluminum industry, which Europe has fully supported, been completely suppressed, but Europe no longer has a say in aluminum-lithium alloy, a key aviation and aerospace material; it has also put the North American aluminum industry in the United States under tremendous pressure, and has suffered losses year after year.  , struggling to support.

    As for the aluminum-lithium alloy industries of Japan and Russia, let alone them, they were basically wiped out by the rapid development of aluminum-lithium alloys in China.

    The reason why China will take off from a prince to the ultimate overlord in aluminum-lithium alloys is mainly due to the in-depth development of rare earths.

    As early as the mid-1990s, China Tengfei had already entered the rare earth field. At that time, the domestic rare earth industry chain was still very backward. It was basically the same as the big dogs in the Middle East. They mined the minerals and sold them.

    What kind of deep processing does not exist at all, so that it has long endured the exploitation of foreign scissors.

    As the domestic rare earth technology field was opened to a number of powerful high-tech enterprises such as China Ascendas, the situation began to change. Take China Ascendas as an example. After more than ten years of development, China Ascendas has mastered the technology from rare earth mining to  A complete industrial chain from smelting and separation to final industrial products.

    Its annual mining and separation of semi-finished rare earth products accounts for 35.6% of the world's total supply.

    In the words of a domestic rare earth expert, even if China takes off by doing nothing, it can make a lot of money just by mining and separating rare earths.

    However, China Tengfei, which accounts for such a high proportion, only provides less than 5% of the total semi-finished products to the international market.

    The rest was absorbed by China Tengfei¡¯s other business areas.

    For example, the optical components on China's Tengfei Optical Satellite require a large amount of elements separated from rare earths; the semiconductor manufacturing process also requires rare earths; as for the aviation and aerospace manufacturing fields, they also require large amounts of rare earths.

    For example, a high-temperature alloy material, t-nb359b nickel-based alloy, developed by China Tengfei Aviation Materials Co., Ltd. (Group) Company in 2003, creatively added cerium separated from rare earths, which originally could only operate at minus 20 degrees Celsius.  Common nickel-based alloys between degrees Celsius and 360 degrees Celsius will not only expand the applicable temperature range to minus 230 degrees Celsius to 700 degrees Celsius.

    And at a high temperature of 650 degrees Celsius, t-nb359b nickel-based alloy still maintains good fatigue resistance, oxidation resistance, radiation resistance and corrosion resistance, especially in the key indicator of yield strength, it is almost the strongest among similar materials.  of one.

    Precisely because t-nb359b nickel-based alloy has such excellent properties, it has received large orders from major domestic giants as soon as it came out.

    ? Among them, China¡¯s nuclear power procurement volume is the largest, because this alloy material that can still maintain good condition under high temperature can be said to be the most ideal material for nuclear power plant reactors.

    China also purchases a lot of ships because the nuclear reactors of the new generation of nuclear submarines they are building for the navy lack such a key material.

    And on the future nuclear-powered aircraft carrier planned by China Shipbuilding Industry, t-nb359b nickel-based alloy also has an irreplaceable position.

    As for China Tengfei itself, it is also a large user of t-nb359b nickel-based alloy. The turbine blades of small aeroengines; the turbine discs and high-pressure turbine blades of medium-sized aeroengines; and the turbine shafts of high-thrust aeroengines are all t-nb359b nickel-based alloy.  scope of application.

    In addition, t-nb359b nickel-based alloy also has very broad applications in chemical industry, electric power, petroleum and other fields.

    Because of this, there is no chance of exporting t-nb359b nickel-based alloy. Several major Chinese companies in the country are taking over. This is not enough. Every quarter, several giants will urge China to take off and speed up production. Hurry up.  delivery!

    This is true for nickel-based alloys that are already relatively unpopular, not to mention aluminum-lithium alloys with wider applications. As early as the late 1990s, China Tengfei began to try to add rare earth elements to aluminum-lithium alloys to improve the performance of aluminum-lithium alloys.  various performances.

    For example, China Tengfei is trying to incorporate anti-element elements extracted from rare earths into aluminum-lithium alloys to give them better weldability and excellent heat treatment properties.

    And this is just a basic aluminum-lithium alloy disclosed by China Tengfei.

    similarThe documentation for the t-nb525 aluminum-lithium alloy used on the Tianhou-2c launch vehicle only states that rare earth elements are used, but there is no specific information about what they are and how much they contain.

    China Tengfei has three similar aluminum-lithium alloy brands, and different brands of aluminum-lithium alloys can be used according to different product application scenarios.

    For example, the t-nb515 series aluminum-lithium alloy used in aircraft skins is outstanding in its processing capabilities; another example is the t-nb545 series aluminum-lithium alloy used in aircraft trusses, which is outstanding in yield and endurance; and cruise  The t-nb535 series aluminum-lithium alloy used in missiles is outstanding in that it is cheap.

    ??The t-nb525 series aluminum-lithium alloy is more like a combination of the above four types. It not only has low cost, strong processing capabilities, but also has extremely strong yield strength and endurance.

    Of course, in addition to high-level materials, advanced processing technology is also indispensable. In this regard, China Tengfei is leading the trend. When the t-nb525 series aluminum-lithium alloy leaves the factory, the inner surface already has a special reinforced mesh.  .

    This technology is currently only mastered by China Tengfei, except for the North American Aluminum Industry in the United States.

    As for other manufacturers, they can only give you a whiteboard of aluminum-lithium alloy. You can only buy it and carve it yourself as to what kind of reinforcement you want.

    However, China Tengfei uses its own chemical milling and washing process to complete this step before the materials leave the factory.

    ¡°That¡¯s not all, because of its precision milling and cleaning, others can¡¯t imitate it even if they want to, because the proportion of that kind of craftsmanship is very exquisite, and if there is a slight difference, the entire material will not be scrapped.

    Such semi-finished parts only need to be quickly cut on the outer surface after being delivered to the processing factory. The thinnest can be 1.5 mm, without worrying about the strength of the material, because the special mesh reinforcement on the north side is strong enough.

    The thickness of the hydrogen fuel storage tank of the Zuantianhou-2c is 2.5 mm, and the t-nb525 aluminum-lithium alloy used in the launch vehicle body is only 4.5 mm. Therefore, when looking at the large amount of metal materials used on the Zuantianhou-2c, it can actually  The overall quality is not high.

    However, not just any country can do this. You must know that 4.5 mm thick metal is basically the same as paper, and its yield is so soft that it is simply impossible to maintain the huge impact of the rocket during launch.  Hell level.

    But the t-nb525 series aluminum-lithium alloy produced by China Tengfei can do it. There is no other way. In addition to the excellent material itself, the excellent chemical milling and cleaning process is also indispensable. The Russians now even use the chemical milling technology left over from the Soviet era.  Stupid Kaka can only play with washing, and the higher-level chemical milling and washing can't even touch the door. Under such conditions, wanting to copy it can only be said to be a dream!

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