Chapter 203

Zhuang Jianye's heart that scold ah, Lin Guanghua that tamp goods, how all say with Ding laixiang, the old man is your own father?

But think about it, there's really no difference between tutors and parents these days.

Yes, there are two sets of equipment proposed by Ding laixiang in Tengfei factory. They were just imported from West Germany not long ago. The value of these two sets of equipment is more than US $3 million, which almost consumes one third of the annual foreign exchange quota of Tengfei factory.

When Zhuang Jianye made this decision, he almost bit his teeth. There's no way. This is the largest foreign procurement project of Tengfei factory in history. It's more than three million US dollars, which is almost the sum of the profits of electric fans in two years. It's a lie to say that it's not painful.

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

When it comes to the jet engine research and development organization of Tengfei factory, it is no longer the grass-roots team that master Ju and Liu Chun privately built. Now it has the right organization name, which is called the jet power office of Tengfei factory.

As for the director of the office, he is neither Liu Chun nor master Ju, but Yan Tiancheng, the former director of the trial production office of Yonghong factory and the old superior of Zhuang Jianye, who retired from Yonghong factory not long ago.

When Zhuang Jianye was in the trial production office at that time, Yan Tiancheng cut his head to the top and put all his heart into it. Every day, he emphasized politics more than technology in the trial production office, which made people think that this old guy was a bureaucrat who was a layman leading an expert. In fact, in his early years, Yan Tiancheng was one of the few technical backbones in Yonghong factory who had full trial production experience of turbojet engine and turbofan engine.

Even today, his experience and technology are not comparable to those of ordinary people, even in his life. He started with turbojet 6, turbojet 7, turbofan 6, "Spey" mk202, and even the reverse mapping of the high-power turbofan engine on the crash plane in the border area.

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

It's amazing. There are so many domestic aero engines. Yan Tiancheng has almost done them. He is just a baby.

In fact, Yonghong factory really regarded him as a treasure. The reason why he participated in the aeroengine process in those years was to train the future technical backbone and leading cadres of aeroengine production for Yonghong factory.

However, the Yonghong factory failed to compete and lost the opportunity of engine production. Even so, Yan Tiancheng was reused and became the head of the iron tail trial production office.

Under normal circumstances, Yan Tiancheng will be promoted to deputy director of the factory, and then retire from the Party committee of the factory. Unfortunately, after a series of transformations in Yonghong factory, young cadres will be promoted, and old cadres like Yan Tiancheng will gradually be marginalized.

At the end of last year, he formally 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 as a demon and Yan Tiancheng was implicated and retired early.

After getting the news, Liu Chun and master Ju, who often blow up engines, immediately came to the door. After more than half a month's hard work, they finally asked the old baby to come out of the mountain again and return to Tengfei factory as the director of the newly established jet power office.

When a new official takes office, he will naturally burn three fires. Instead of being a bureaucrat, Yan Tiancheng, who takes up the post of technical leader again, burns three fires very well. First of all, he criticizes Liu Chun and master Ju severely. He dares to use jet power of UAV without even a little common sense of system integration. It's almost as good as death. He also talks about saving money. Is jet power money saving?

The second is to go back to Yonghong factory and find a lot of old and new students in the trial production office. Tell them that they are idle too. It's better to help him with trial production. If the test bench is used, Tengfei factory will pay for it. It's also his old leader's welfare for these old and new students.

Yan Tiancheng has been the director of the trial production office for seven years. His prestige in the trial production office is within the reach of human beings. In addition, with his back on the money tree of the take-off factory, the trial production office immediately went crazy. He would like to start Yan Tiancheng's trial production task at the next moment.

After that, I found the old subordinate Zhuang Jianye and politely took out a lot of purchase lists and reimbursement forms, which made Zhuang Jianye dizzy.

Also very polite with Yan Tiancheng said: "can we save some?"

Yan Tiancheng laughed brightly: "this is the most economical."

Yes, although Yan Tiancheng's list is staggeringly expensive, it is indeed the most economical plan carefully considered by the old man. Even the electron beam welding machine and high-speed hydraulic cutting machine, which are worth more than three million US dollars, are the key equipment that have to be used.

Although the jet power of UAV is less difficult than that of high thrust jet engine, there are many difficulties in the long service life of UAV.

The titanium alloy should be used as well as the one for heat dissipation. Let's say that Yan Tiancheng chose the turbine cover and fan cover of the engine combustion chamber.

That is to say, in order to achieve the high temperature resistance index, the surface of Tuotuo's high power turbojet engine is sprayed with ceramic coatings of various high temperature resistant alloys and carbides.

It is because of the ceramic coating that the damage rate of the material is very high during the cutting process. Because of the vibration that cannot be eliminated and the inherent accuracy problems in the ordinary mechanical cutting, the material is either sprayed off or the accuracy after processing is not up to the standard and needs to be reworked.Advanced laser cutting does not worry about vibration. Unfortunately, the laser is cutting through high temperature, and the ceramic coating on the material is just a good high temperature insulator. Therefore, laser cutting is equivalent to doing heat resistance test for the material.

Only high speed water pressure cutting, can solve these problems, not only can cut off the material, but also ensure the accuracy.

In Yan Tiancheng's words: "in the early years, we were closed. We didn't know that there was high-speed water pressure cutting abroad, which made us worry that we could not do large-scale industrial production. No matter how good the material was, it was useless. So, Xiaozhuang, if you want to use turbojet on UAV, you can't do without it."

High speed water pressure cutting is indispensable, especially electron beam welding machine. Yan Tiancheng changed Liu Chun's and master Ju's conservatism, and used titanium alloy as the key parts of turbojet engine in Tengfei plant, rather than low-carbon alloy steel. The best welding method of titanium alloy is electron beam welding.

Zhuang Jianye is not a person who doesn't know what to do. Yan Tiancheng wants these two kinds of equipment, let alone now, but in the future, they will also be indispensable key equipment in the aviation field. Since they are useful, they can be bought, so more than three million dollars will be spent.

But he didn't expect that he would hit old Ding red in the eyes. Looking at this, Professor Ding wanted to copy the arrogance of director Yan Da and blacken himself. The problem is that the money of Tengfei factory is not from the strong wind, and the vacuum brazing device is not enough?

After thinking about it, Zhuang Jianye looked at Professor Ding with an embarrassed face: "Professor Ding, I think Guanghua has also told you that two sets of equipment are not only expensive, but also not easy to buy. Tengfei factory has made great efforts to get such a set, and it is unlikely to get a second set. Do you think this is OK? You can ask Professor Qian to take me where you want to use the equipment ”