Chapter 1214

Looking at the machine foundation step that has gone far behind Zhuang Jianye all the way, whether it is the deputy director or the person in charge of the aviation development manufacturing plant who has followed Zhuang Jianye hard, it is one that counts as one. It is no longer ignorant, but completely petrified.

You know, it's the top electrochemical equipment manufacturer in the world, Kobayashi chemical's machine base.

It's not easy for a person in charge of a domestic manufacturing enterprise to meet him. It's lucky to have to wait in line to buy equipment. It's normal to increase the price for a long period of time. Therefore, wherever the machine base step goes, it's always looking at people through its nostrils. Where have you ever seen this gentleman pleading for someone so lowly?

And is he a Chinese who is often added to his doubts about life?

So that people in charge of these aviation development plants have a sense of absurdity about whether they are living in a dream or crossing a parallel world. They can't help it. Their existing values and world outlook are shattered, which makes them feel that the world is a bit crazy. Mice have become bridesmaids for cats.

"You ~ ~ ~ ~ you ~ ~"

just when a group of people were confused, the old chief engineer in front of them suddenly opened his mouth, and then, with a kind of look of grandfather looking at the black sheep grandson, full of hatred for iron, he swept all the responsible people of the aviation development plant, including the deputy director, coldly, stretched out his hand and ordered them one by one, and said with great regret: "can't we have a snack? I'm 40 or 50 years old. I have to bury my yellow picture above my head. I can't wake up until I scold you for nothing? "

All the people who were in a daze were even more at a loss because of the old general manager's groundless scolding. I don't know how the old general manager suddenly got angry. So a person in charge of an aviation development plant, who had a good relationship with the old general manager, bravely and carefully asked, "old general manager, this is..."

"What am I, who am I?"

The person in charge of the aviation development plant who asked was not finished, but was rebuffed by the chief engineer. He immediately pointed to Zhuang Jianye and Ji Jibu: "the key is that they are a world-class high-end equipment. Do you want to hand it over to the Japanese again? One by one, they see their achievements as bigger than their lives. What happens? When I really get the chance to make achievements, I'm just like a erlengzi. I'm lazy to stretch my hand. I'm old. I'm not allowed to do it any more. If I took off my shoes three years ago, I'd take out more than a dozen big ear scrapers one by one. If I couldn't wake up, I would be killed directly! "

"Old chief, please calm down, please calm down..." Seeing that the old chief engineer was really angry, another person in charge of air launch rushed forward to comfort him. Not only that, he hinted that the assistant had prepared his quick acting heart saving pill, for fear that the old chief engineer would be in trouble if he was angry. So he said politely: "we all know the truth. The problem is that we don't know the new technology of Tengfei group In particular, we haven't even heard of the nb-6857 six axis compound machining center mentioned by Jiji Buchang. It's really wrong for you to say that we give up our hands to others. "

With three grievances and seven sincerity, the person in charge of the aviation development plant said that his words were both true and gentle. The key was that he was reasonable. Other people nodded their heads one after another. In fact, the name of nb-6857 six axis composite machining center is very tall. But what exactly does it do? One of them is clear, and none of them is clear, Since we don't know where to know whether the applied technology is good or bad?

"I'm worried..."

After listening to other people's explanation, the chief engineer sighed. The fire was slightly depressed, but he still said sonorously: "but you also need to understand, because the metal core in the high pressure turbine guide vane and the film cooling holes on the wave spring you just saw were made by nb-6857 six axis composite machining center."

"Oh? So this device is also an electrochemical device? " When the deputy director general heard that he was going to continue to speak, he was glared back by the chief engineer: "if it's ordinary electrochemical equipment, is it necessary for me to give you a chance?

It's a kind of composite special processing equipment combining two different processes of EDM and electrochemistry... "

With that, the general manager slowly explained the basic situation of nb-6857 six axis compound machining center.

There are three kinds of machining technology for film cooling hole on turbine blade of aeroengine, one is EDM technology, the second is laser technology, and the last is the most advanced electrochemical technology.

Among them, EDM technology is the most mature and efficient, laser energy density is the highest, and electrochemical technology has the best quality.

However, despite the advantages, the disadvantages of these three processes are also obvious. Due to the discharge effect, it is easy to form recast layer, microcrack and sharp edge around the hole in the EDM process, which affects the overall structural strength of the blade and leads to quality degradation.

In addition to all the disadvantages of EDM, the biggest defect of laser is that the energy density is too high, and the thick material is still good. If it is thin material, once it is not well controlled, it is easy to put the outer fixture or workpiece through.

The electrochemical process is almost able to process the most perfect film cooling hole at one time without the determination of the above two processes, but there is an unavoidable problem in this process, that is, the production efficiency is too low.It takes at least 120 hours for an ordinary electrochemical single hole machine to make a low pressure turbine blade with more than 1200 film cooling holes.

If it is a double hole machine, it will take less time, but it will take 80 hours to complete.

There are hundreds of all kinds of guide vanes and turbine vanes in an aero-engine, each of which takes 80 hours. When hundreds of them are added together, they can make people feel numb.

This is still the quantity of an aeroengine. The mass-produced aeroengine does not produce hundreds or thousands of aeroengines. The total time of these aeroengines is absolutely astronomical.

Of course, some people will say that if there is a two hole machine, there should be a three hole machine, a four hole machine or even a five hole machine?

In addition to the idea of electrochemical drilling, there is no good way to separate the liquid from the chemical injection pipe.

The reason is also very simple. The medium of electrochemical equipment is highly corrosive and toxic chemical synthetic agents. Driving such reagents requires special materials and accessories, and the cost is very high. It is the limit to accurately control two injection holes, but it is impossible to control more than three holes.

Therefore, if we want to quickly process a batch of film cooling holes, we can only expand the scale of electrochemical equipment, and stack a batch of film cooling holes with the so-called machine sea tactics.

Just doing so, the cost will be high to a terrible level.

The nb-6857 six axis complex machining center of Tengfei group is based on the contradiction between quality and efficiency, which puzzles the processing of film cooling hole of aeroengine, and develops high-quality and efficient film cooling hole processing equipment.

“…… Nb-6857 six axis machining center has both the high efficiency of EDM and the high quality of electrochemistry. " After a brief introduction, the old chief engineer summed up: "therefore, the efficiency of machining high-precision film cooling holes is quite high. Generally, for about 2000 high-pressure turbine blade film cooling holes, nb-6857 six axis composite machining center only takes less than eight hours to complete."

"Eight hours?" The person in charge of the aviation development plant who prepared the quick acting heart saving pill heard a cry of surprise. The next moment, he left the old chief engineer who was still angry and chased Zhuang Jianye, who was about to enter the maintenance workshop. While running, he yelled: "Mr. Zhuang, we have bought your nb-6857 six axis composite processing center. You can give us a price, no matter how much..."