Take Off My Aviation Era

If the "air car" surprised Wang Huan and the others because of its weird body shape and the way the plane was loaded into the plane, then what Qiao Shiming said just now really shocked these people.

There is no way, it is really because compared to the sensory stimulation of the "air car", the repair of the low-pressure turbine blades of the jt9d turbofan engine really touches the soul of the Shanghai Airlines.

You must know that the repair of aero engine turbine blades is not to mention domestic, even abroad, it is also a high-end category, and it can not be done by just bringing in a company or factory.

After all, turbine blades are one of the most critical core heating components of aeroengines. They need to withstand thousands of degrees Celsius high temperature and unimaginable high-speed centrifugal force. Therefore, turbine blades are top-notch in the industry in terms of materials, technology, and processing.

Especially for high-thrust turbofan engines like jt9d turbofan engines, the production process of turbine blades is quite complicated. Not to mention, the film cooling holes and internal cavities used for heat dissipation are an extremely exquisite art. The product, however, is superfluous, and the performance is insufficient, reaching an unprecedented extreme.

It is such a crystallization of human industry that is comparable to works of art. It is really hard to repair it as a dojo in a screw shell.

Because of this, only the United States and a few European companies controlled by the United States can do this type of turbine blade repair worldwide. A maverick country like France can do it, but the overall quality is not as good as the United States. Countries like Japan have no corresponding capabilities at all, so they dare not touch them and can only be handled by the United States.

As a result, Qiao Shiming said that the low-pressure turbine blades of the jt9d turbofan engine shipped three days ago were repaired?

Although the main reason for the failure of the jt9d turbofan engine this time is not the major problem of the damage or fracture of the turbine blades, but the gap between the front section of the low-pressure turbine blade and the sealing ring of the outer honeycomb assembly has increased due to long-term use. , Triggering the aero engine alarm.

Strictly speaking, the maintenance of the low-pressure turbine blade itself is not as difficult, but it is only relative to the complexity of the low-pressure turbine blade itself. In fact, the overall difficulty is still higher than that of other components.

The first is the material. Because it needs to withstand a certain high temperature and pressure, the blade crown of the low pressure turbine blade is integrally cast with a high temperature resistant nickel-based alloy.

The second is heat treatment. Because of the unique properties of the high-temperature resistant nickel-based alloy itself, the heat treatment needs to be very meticulous. There are extremely strict requirements for quenching, tempering, and cooling medium. The temperature is controlled within 1 degrees Celsius. Otherwise, the entire component may be scrapped due to internal metallographic changes.

Again, it is machining. Needless to say, machining in aviation is only precise, precise and more precise. Either a high-precision machine tool or a highly skilled 8-level worker is required, otherwise it is difficult to do that. Kind of extreme precision.

Finally, it is combined with the blade, so the precision welding process cannot be avoided. Although there are many subdivision methods, no matter what the method is, all of them are the forefront of the welding field.

To sum up, it is only a general direction. There are still many details in it, each of which is high-end. Otherwise, the aero engine would not be called the jewel of the industrial crown. It goes to the extreme.

However, with this extreme, the Ascendas Aviation Maintenance Plant has actually been completed?

Three days, from the jt9d turbofan engine to the factory, only three days, 72 hours, the strained crown of the low-pressure turbine blade was repaired?

Not to mention Wang Huan, an insider, but Qi Hong, who are half-hearted, feel that they have misheard their ears. It is necessary to know that the Boeing 767 failure of their airline is sudden. It is impossible for Tengfei Aviation Repair Shop to know in advance, let alone The materials and plans may be prepared in advance, which are completely temporary. How could the unprepared Ascendas Aviation Repair Factory be able to repair it so quickly?

If nothing else, how to solve the material?

Under normal circumstances, it takes more than three days from synthetic materials to integral casting, let alone the subsequent heat treatment and machining.

It is necessary to know that in the past when an American or European outsourcing maintenance company helped Shanghai airlines to do similar strained crown repairs of low-pressure turbine blades, the minimum cycle would take about one and a half months. As a result, it took only three days for the take-off aviation maintenance plant. may!

Seeing that Wang Huan and others didn't believe it, Qiao Shiming didn't explain too much. Instead, he pointed at the small factory building on the other side: "Go there first."

Raise your leg and leave.

Wang Huan and the others were stunned for a while, asking whether your old man could answer the question first, and it would make people crazy.

Fortunately, Zheng Yongning started to explain at this time: "Wang Gong, Manager Qi, let's go and take a look. It is a new process that our factory has just applied. It can repair the strained crown of the low-pressure turbine blade of the jt9d turbofan engine in three days. It is good for this new process."

With that said, Wang Huan and the others understood what was going on. Even if they became interested, what kind of craftsmanship could be used for high-end restoration work in three days?

With three points of suspicion, three points of curiosity, three points of expectation and one point of caution, Wang Huan and others soon followed Qiao Shiming and came to the small factory building. As soon as they entered, they let Everyone has a weird feeling, because the entire interior is not so much a factory building, it is more a laboratory, various instruments, various display devices, and shiny calculations and processors, plus those who are in white coats that are shuttled back and forth. The staff of Wang Huan and others thought that they were in the wrong place.

Just about to ask Zheng Yongning next to him if this was a production workshop, Qiao Shiming suddenly said, "Well, it came just in time. They just started processing the crown of the new low-pressure turbine blade."

Speaking and pointing to the center of the plant, everyone immediately took a look, and saw a large-scale equipment more than two meters high and three meters wide standing in the center of the factory building across the back glass.

However, although the equipment is large, most of them are support mechanisms or auxiliary structures. The real core is the translucent worktable in the center that is not the size of an 18-inch TV.

Inside it, something similar to a processing probe was moving back and forth flexibly.

"This is... a multi-axis machining center?"

Because it is far away, and the workbench on the equipment is too small~www.readwn.com~ and the eyes are not so good, Wang Huan can't see what is inside at all, but from the overall structure, it is very It accords with the setting of multi-axis machining center in Wang Huan's mind.

Zheng Yongning on the side smiled: "This is much more magical than a multi-axis machining center, Wang Gong, look here, there is real-time monitoring on the screen."

Upon being reminded like this, Wang Huan noticed that the screen on the console next to it was exactly the screen on the workbench of the equipment, and he hurriedly held his glasses to look intently.

I saw in the black and white picture, the flexible probe rotated a circle along a strange trajectory, and then one was sent to the device to block it, and then the probe continued to make a strange circle.

Wang Huanbian frowned after only looking at it. What is this? It's not a multi-axis machining center. What is that? Bored of the circle machine? Tengfei Aviation Maintenance Factory should not be so boring.

Just when Wang Huan was about to say a few thoughts, Qi Hong suddenly touched him with his hand, and then pointed to the screen with a devilish look on his face and said: "Wang Gong, look at it, the metal parts are moving up one by one. long."

After hearing the words, Wang Huan took a closer look again, his face also looked like Qi Hong, and the metal parts in the workbench were really growing by itself.