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Chapter 203 This thing is indispensable

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    Zhuang Jianye was scolding Lin Guanghua, why did he tell Ding Laixiang everything? Is the old man your biological father?

    ¡°But think about it, these days there¡¯s really no difference between a graduate student¡¯s supervisor and his biological father.

    Yes, Tengfei Factory actually has the two sets of equipment proposed by Ding Laixiang. They were imported from West Germany not long ago. These two sets of equipment alone are worth more than three million US dollars, which almost consumes Tengfei Factory¡¯s annual foreign exchange quota.  one third.

    When Zhuang Jianye made this decision, he almost broke his teeth. There was no way. This was the largest external procurement project in the history of Tengfei Factory. It cost more than three million U.S. dollars, which was almost the total profit of electric fans in the past two years.  To say it doesn't hurt is definitely a lie.

    "But even though it hurt, Zhuang Jianye still bought it. The reason is very simple. The small jet engine in the factory has entered a critical stage.

    Speaking of the jet engine development organization of the Tengfei Factory, it is no longer the grassroots team that Master Ju and Liu Chun secretly built up. Now it has a proper name for the organization, called the Jet Power Office of the Tengfei Factory.

    As for the office director, he is neither Liu Chun nor Master Ju, but Yan Tiancheng, Zhuang Jianye¡¯s old superior who had just retired from Yonghong Factory and was the former director of Yonghong Factory¡¯s trial production office.

    When Zhuang Jianye was in the trial production office, Yan Tiancheng was obsessed with getting better. He talked more about politics than technology every day in the trial production office, so that it made people think that this old guy was just a layman who was an expert in leading a bureaucrat. In fact,  In his early years, Yan Tiancheng was one of the few technical backbones at Yonghong Factory who had full experience in trial production of turbojet and turbofan engines.

    Even today, his experience and technology are not comparable to ordinary people, or even in this life. Starting from Turbojet 6, Turbojet 7, Turbofan 6, "Spei" mk202, and even the crash in the border area  Inverse mapping of high power turbofan engines on large aircraft.

    Yan Tiancheng did not simply participate, but went through all the processes completely, not just one, but several.

    This is incredible. Yan Tiancheng has worked on almost all of the domestic aviation engines. They are simply treasures.

    In fact, Yonghong Factory really regarded him as a treasure. The reason why he participated in the aero-engine process was to train Yonghong Factory¡¯s technical backbone and leading cadres for future aero-engine production.

    However, Yonghong Factory failed to live up to its expectations and lost the opportunity to produce engines one after another. But even so, Yan Tiancheng was reused and became the leader of the Iron Tail trial production office among the Tongtou Iron Tail.

    Under normal circumstances, Yan Tiancheng would be promoted to deputy factory director, then join the factory party committee and retire. Unfortunately, after a series of transformations, Yonghong Factory began to promote young cadres, and older cadres like Yan Tiancheng began to be gradually marginalized.

    At the end of last year, he officially resigned as the director of the trial production office and was assigned to a second-line position as a leader. This year, Wang Wei acted like a monster and Yan Tiancheng was implicated and was retired early.

    After receiving this news, Liu Chun and Master Ju, who often blew up engines, immediately came to the door and worked diligently for more than half a month. Finally, they asked this old baby to come back to work and be hired back to Tengfei Factory to serve as the newly established jet power office.  director.

    Naturally, when a new official takes office, he has to burn three fires. Yan Tiancheng, who does not want to be a bureaucracy and has returned to the position of technical leader, has three fires. The first is to severely criticize Liu Chun and Master Ju. He does not even have any common sense about system integration.  If you dare to use jet power for drones without it, it is almost like committing suicide, and you even talk about saving money. Is jet power something that saves money?

    The second step is to go back to Yonghong Factory, find a lot of old disciples from the trial production office, and tell them that they are just idle. They might as well help him with trial production, and it is not in vain. Tengfei Factory will pay for the use of the test bench, so he is included.  The old leader has sought benefits for these disciples.

    Yan Tiancheng has been the director of the trial production office for seven years. His prestige in the trial production office is unparalleled. In addition, with the Tengfei Factory as a cash cow, he can throw a lot of money around, and everyone in the trial production office immediately goes crazy.  Yan Tiancheng's trial production task will begin in the next moment.

    After that, I found Zhuang Jianye, an old subordinate, and politely took out a lot of purchase lists and bills, which made Zhuang Jianye's eyes dizzy.

    He also said to Yan Tiancheng very politely: "Can we save some money?"

    Yan Tiancheng smiled brightly: "This is already the most economical thing."

    Yes, although the list given by Yan Tiancheng is staggeringly expensive, it is indeed the most cost-effective solution that the old man has carefully considered. Even the electron beam welding machine and high-speed hydraulic cutting machine worth more than three million US dollars are key equipment that must be used.  .

    Although the technical difficulty of jet power for drones is lower than that of high-thrust jet engines, if you want it to have a long service life, there are actually not many difficulties involved.

      If titanium alloy should be used, titanium alloy should be used, and if heat dissipation should be done, heat dissipation should also be done. Let¡¯s talk about the turbine cover and fan cover of the engine combustion chamber that Yan Tiancheng chose.

    That is the proper material on a high-power turbojet engine. In order to achieve high-temperature resistance, the surface is sprayed with various high-temperature-resistant alloys and carbide ceramic coatings.

    It is because of this ceramic coating that the damage rate of the material during cutting is extremely high, because ordinary mechanical cutting causes the material to either fall off after being sprayed, or the accuracy after processing is not good.  Rework is required to meet standards.

    More advanced laser cutting has no worries about vibration. Unfortunately, laser cuts through high temperature. The ceramic coating on the material is a good high-temperature insulator, so laser cutting is equivalent to conducting a heat resistance test on the material.  .

    Only high-speed hydraulic cutting can solve these problems well, not only cutting the material, but also ensuring accuracy.

    In the words of Yan Tiancheng: "In the early years, we were closed off. We didn't know that high-speed hydraulic cutting was available abroad. This made us worried when we looked at the materials. We couldn't do large-scale industrial production. No matter how good the materials were, it was useless. This is the case with the turbofan 6.  No, so, Xiaozhuang, if you want to use a turbojet on a drone, you must have this thing."

    High-speed hydraulic cutting is indispensable, and electron beam welding machines are even more indispensable, because Yan Tiancheng changed Liu Chun and Master Ju's conservatism and decided that the key components in the turbojet engines of Tengfei Factory can be made of titanium alloy.  Low carbon alloy steel, and the best welding method for titanium alloys is electron beam welding.

    Zhuang Jianye is not an ignorant person. The two pieces of equipment that Yan Tiancheng wanted will be indispensable and key equipment in the aviation field in the future, not to mention now. Since they are useful, they bought them, so more than three million US dollars were spent.

    But he didn't expect that after smashing and smashing, Old Ding got a red eye. Seeing this, Professor Ding wanted to copy Director Yan's arrogance and blackmail himself. The problem is that Tengfei Factory's money is not  The strong wind is blowing and the vacuum brazing device is not enough?

    So after thinking about it, Zhuang Jianye looked at Professor Ding with an embarrassed look on his face: "Professor Ding, I think Guanghua has told you that the two pieces of equipment are not only expensive, but also not easy to buy. Tengfei Factory has already used all kinds of equipment to get such a set.  I have gained strength from breastfeeding, and it is unlikely that I will get a second set. Do you think this will work? You can ask Professor Qian to take people to my place, and you can use the equipment as you want"

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