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Chapter 843 US$5 billion

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    No wonder Lin Guanghua is so excited. Since the second half of 1991, Ascendas Group has been searching for this rare metal deposit called rhenium in China.

    Three full years have passed, and except for a very few derivative mines, no trace of rhenium has been found at all.

    There is no way, Ascendas Group can only import from abroad. The problem is that the global annual output of this rare metal is no less than 500 tons, and the price is so high that even gold cannot match it. Ascendas Group spent a lot of effort and spent 150,000 US dollars.  I just purchased about 20 kilograms of rhenium metal in South America.

    The reason why Ascendas Group loves this rare metal, even if it is purchased by kilograms, is for no other reason than that the metal rhenium is a key factor in the success or failure of Ascendas Group's second-generation 6-megawatt core machine.

    Because rhenium, as a high-temperature-resistant metal, in addition to the characteristics of high-density, high melting point, and high strength that are common in high-temperature-resistant metals, more importantly, this rare metal has strong oxidation resistance and minimal changes at any temperature.

    This may not be specific enough. Let¡¯s take an American test example. During the development of the high-power engine of the Delta Heavy rocket, the American company Lockheed Martin used rhenium-containing alloy metal to make the tail nozzle of the rocket engine. The maximum  The temperature can reach 2200 degrees Celsius.

    ¡°Traditional high-temperature alloys will be scrapped after several repetitions of thermal cycle tests in which room temperature rapidly increases to 2,200 degrees Celsius.

    But the high-temperature-resistant alloy containing rhenium was able to withstand 10 to the fifth power of heat cycle thermal fatigue without failure in similar tests.

    ??Draw an important point, not 10 times, but 10 to the fifth power.

    This shows how rhenium¡¯s high temperature resistance, sustained stability, strength and tolerance are. It is precisely because of this that this type of rare metal is regarded as an important strategic material by the Americans, from refining methods to smelting.  The purification to the final alloy ratio is completely confidential, and there is no thought of technology transfer and export of finished products.

    So for many years, there has been no research on rare metals like rhenium in China, so many people really don¡¯t know what it can do except knowing that there is such a thing in the periodic table of elements.

    It wasn't until the disintegration of the Soviet Union and some Soviet experts were hired domestically that the aviation industry learned that there was something called rhenium. Adding it to high-temperature alloys such as nickel-based alloys would increase the thermal resistance of such high-temperature alloys by 300 to 500 degrees Celsius and increase their strength.  and lifespan will be doubled.

    This attracted domestic attention.

    It's just that we attach great importance to it, but the action is a bit slow. This is not because the relevant domestic institutions are slacking off, but mainly because the Soviets don't do much research in this area. The Soviet Union collapsed as soon as they had some ideas, so that many smelters  , ratio, and production had just begun to take shape, the entire development process was interrupted due to the decline of the country.

    It is tantamount to saying that China has taken over an unfinished project, and there is still a long way to go before we can produce high-temperature alloys containing metal rhenium.

    If that¡¯s the case, then that¡¯s it. At least it¡¯s not starting from scratch, which saves a lot of effort. If you are willing to spend money, it will not be difficult to come up with it. The problem is that there is an insurmountable obstacle there, so that no matter how much money the country spends, it will be in vain.

    ¡°The obstacle is none other than that there are no rhenium ore deposits available for exploitation in the country.

    To be more precise, the domestic precision smelting technology is not up to par, and it is impossible to extract metallic rhenium from the derived rhenium ore, and there is no aggregation of associated rhenium ore, which puts the domestic aviation industry in an embarrassing situation where it is difficult for a skilled woman to make a meal without rice.  .

    If this were not the case, Ascendas Group would not have paid a high price of US$150,000 for 20 kilograms of rhenium metal.

    However, the money spent by Ascendas Group is still worth it, because after more than a year of research and testing by Ascendas Group's Aerospace Materials Research Institute, 9.7% of the metal rhenium is added to the nickel-based alloy used in the 6-megawatt core, which has the highest  The temperature has increased from the previous 1020 degrees Celsius to 1382 degrees Celsius. If combined with air film cooling technology, heat-resistant ceramic coating technology and other composite high-temperature treatment technologies, the high-temperature resistant temperature will be further increased to 1547 degrees Celsius.

    This is not the most critical thing. Ascendas Group plans to use the aluminum-titanium alloy in the third-generation 15-megawatt core machine and the fourth-generation 27-megawatt core machine. Because the addition of metal rhenium finally breaks through the technical bottleneck for many years,  Substantial progress has been made.

    According to the latest experimental results from the Institute of Aeronautical Materials, the aluminum-titanium alloy with 16.7% rhenium metal not only increases its strength by 320%, but its heat-resistant temperature also increases from 1100 degrees Celsius in the past to 1563 degrees Celsius, and its service life is even longer than today.  2.6 times that of commonly used nickel-based alloys.

    And it is lighter and more efficient. In other words, the fuel economy of aerospace engines using aluminum-titanium alloys will be higher in the future.

    With such a good thing, Ascendas Group is eager to use it in its own aviation engines immediately.?Up.

    ¡°However, the smelting process of this fused rhenium metal is very high, which is acceptable in the laboratory, but industrialization is far from reaching mature requirements. What¡¯s more, the addition amount of 6.7% is indeed too large, and the cost is not worth it.

    Of course, the most important thing is that domestic rhenium metal mines cannot meet the needs of large-scale production. Therefore, in recent years, Tengfei Group has been conducting various forward-looking experimental studies on heat-resistant alloys containing rhenium in the laboratory. There is no urgency.  of production.

    This also makes Lin Guanghua's 5,000-kilometer extended-range version of trj-500, the trj-500nb, unable to be launched. There is no way, the turbofan engine with a thrust of 6.5 has not been available, and the trj-500nb can only be used on the drawings.  Gray.

    Now that he has exchanged two trj-500s and eight ten-year leases of the same model for associated rhenium ore that is easy to smelt, Lin Guanghua only feels that this transaction is worth it.

    ???????????????????????????????????????????????????????????????? Even if it quadruples, Lin Guanghua feels that he has made a lot of money.

    You must know that as long as the rhenium in this mine is controlled by Ascendas Group, within two years, the second-generation nickel-based high-temperature alloy that the Aerospace Materials Research Institute has been researching for several years will be mass-produced, and then the second-generation 6-megawatt core machine will be launched.  , a 6.5-ton-thrust turbofan engine will be put into production immediately at the Cotton Aviation Power Plant.

    With the engine, let alone the 5,000-kilometer trj-500nb, or the 10,000-kilometer trj-500zb, it's all child's play. Because the second-generation core machine has landed, the thrust of 6.5 tons is just child's play, and the large bypass of 7.5 tons or even 8.5 tons is just child's play.  A turbofan engine is like a dumpling coming off the production line of an aviation power plant.

    By then, trj-500nb and trj-500zb can only be regarded as younger brothers. The 80 to 120-seat trj-700 and trj-900 will be the flagship of Ascendas Group!

    " Lin Guanghua is so important to Ascendas Group that it almost determines the fate and future of the metal element. How can Lin Guanghua not feel his heart beat and how can he not be excited just to get it!

    But Lin Guanghua's unconcealable excitement was seen as a look of envy in the eyes of outsiders. They didn't know the contents of the agreement, let alone the rhenium mine involved, but they saw the envoys from six countries.  The consulate staff thrust the contract into Lin Guanghua's hands like a star-studded fan. Their positive look was like that of a fan who saw a celebrity, almost going crazy on the spot.

    But this is not the point. What really shocks outsiders is the number of purchases from these countries. The total purchase price plus leasing actually reached 118.

    The total amount reached a staggering US$5 billion.

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