Take Off My Aviation Era

As the so-called layman watch the excitement, the insider watch the doorway.

Anyway, Professor Ali Khan is also a senior engineer who has worked in top aerospace manufacturing giants such as Airbus and Boeing. Even if he does not have a deep understanding of materials, he has been in contact with him over the years.

In particular, fiber-reinforced metal matrix composite materials, whether Boeing or Airbus, have been widely used in the production of large civil airliners since the late 1970s.

Because of this, Professor Ali Khan is well aware of the complexity of such materials in production.

Take the most widely used diffusion bonding process today.

First, the reinforcing fiber and the metal sheet need to be superimposed layer by layer like a stack of arhats, and then stand still for a period of time. After the binder of the cured fiber is fully combined with the metal, then the two superimposed materials can be put into a professional Begin to evacuate air from the container, making the container in a vacuum state.

At this time, the electric heater starts to work, heating the two superimposed materials in the container at a high temperature to make them fuse with each other; after cooling, pressure pressing is performed to make the two materials completely compatible with each other.

The process of high temperature and high pressure is long and complicated. Usually, a diffusion bonding furnace can not produce many composite plates in one day.

That's all, the key is that this kind of diffusion bonding furnace needs to be supplemented with a complicated vacuum environment and high temperature and high pressure supporting equipment, and often these equipment are very large in size, very complicated in structure, and naturally expensive and touching.

If this is the case, as long as usable composite materials can be produced, it doesn't matter how expensive it is.

The problem is that this kind of diffusion bonding furnace can't be used by just reading the manual. What is the degree of vacuum control? What is the proper heating temperature to maintain? How much should the pressure be?

Even if you understand all these things.

Is the material heated or pressurized first? Or is it heated and pressurized together? How many times will it be done together? If there is an interval for heating and pressurization, how much is this interval to keep the material stable?

Such a vast array of production data and process elements and equipment manufacturers will not tell you, do you want? can!

The manufacturer's lion's mouth is open, and the asking price may be three or four times more expensive than the equipment, because this is the core product of the product, the core parameter of industrial production.

Of course, it is lucky that you can get hands for three or four times the asking price. The most deceptive thing is that the equipment is sold to you, but these core parameters are not given to you. They completely took your money and slept with your body. You can't have a temper until you're at it, otherwise the accessories will be choked to death, and the things you buy for a lot of money will just be scrapped.

In contrast, the nb-998 laser plasma spraying equipment is simply a disruptor of the previous process. What high temperature, high pressure and vacuum are not used at all. Instead, it is replaced by more refined and advanced metal powder and high-energy laser beams, just like a printer. , While spraying the metal powder uniformly, the high-energy laser beam has already fused and solidified the metal powder with the glass fiber, so layer by layer, the required composite sheet can be quickly produced.

Not only the efficiency has been improved several times, but the flexibility is far beyond the old technology.

It should be known that because the diffusion bonding furnace uses high temperature and high pressure to fuse the reinforcing fiber and the metal material, the thickness of the material must be ensured, otherwise the superimposed layer with insufficient thickness may be damaged and completely scrapped under the high temperature and high pressure.

Therefore, if you want thin and light aerospace parts, you have to do two, three or more follow-up processes after the blank is processed to obtain the required standard shape.

The nb-998 laser plasma spraying equipment is different. As long as the basic strength is guaranteed, thin materials are produced if you want thin materials. If you want thick materials, it is nothing more than adding a few more layers of glass fiber and multiple layers of metal powder spraying. Subject to processing requirements, you can change whatever you want.

Apart from others, during the time that the Pakistani military delegation entered the No. 7 workshop, Professor Ali Khan saw that nb-998 processed two types of plates.

One is a three-layer 0.2mm-thick aluminum plate sandwiched between two 0.3mm-thick glass fiber layers to make a 1.2mm-thick composite sheet, which is mainly used for the skin cover of 15 aircraft.

The other is seven layers of 0.3mm thick aluminum plates sandwiched with six layers of 0.5mm thick glass fiber to make 4mm thick plates, which are used to transport 15 aircraft cabin floors, and are used as reinforcement ribs for some secondary structures.

The whole conversion process is very smooth, but the operator inputs a few instructions on the control keyboard.

Unlike those old processes, the product is single, and the subsequent processing is even more difficult, because it needs to be thinned, cut, or even directly made into parts with multi-axis machine tools, and the complexity is not much less than that of composite sheet production, and it is invisible. Not to mention the increased costs in China, the entire follow-up equipment is not affordable for a country with limited financial resources like Pakistan.

So no matter what else, but from the cost point of view, the nb-998 laser plasma spraying equipment is equivalent to simplifying two to three major processes, 20 to 30 necessary processes, and the cost control ability is simply against the sky, 100 million US dollars. The cost-effective to burst.

To know that the old technology is used, let alone the processing equipment for the subsequent plates, the complex and low-efficiency production equipment alone can't afford to cost 7.8 billion US dollars.

And the equipment purchased at 7.8 billion U.S. dollars is fully used, and it may not be as good as the production capacity of a nb-998 laser plasma spraying equipment.

What's more, can the equipment purchased for 780 million US dollars give you the core production parameters?

The nb-998 laser plasma spraying equipment of Ascendas Group does not have this to say, because they fully realize computer automation control, all parameters are input into the computer, and professional industrial software is used for control. There is no so-called equipment to buy back. The disgusting thing about the core parameters being cut twice, because all the parameters of the Ascendas Group are fully integrated with the equipment, buying the equipment is equivalent to buying these core production parameters.

As for whether other countries can obtain the core manufacturing data of nb-998 control status and materials from these industrial software and computers, although Professor Ali Khan wanted to do so, he could only smile helplessly.

Because all the data is restructured in computer language based on optimized mathematical algorithms, this is like the multi-sense phrase "multi-person movement" ~www.readwn.com~ first expressed in Latin and then used Greek The Borai language was presented to everyone, and the old driver who said this phrase certainly understood the multiple meanings under the surface of this phrase.

Other people know so much, even if you go back to the original sentence of "multiplayer sports", you will know that this may be a form of sports, how can it be clear that there are indescribable alternative scenes?

The slightest difference is a thousand miles away, and once everything goes wrong, let alone restore it, it is estimated that the entire cracking plan will go straight to the street.

The important thing is to do this. If the original state cannot be restored, even if the entire equipment is completely scrapped, then it will be the real steal.

So honestly buying the equipment back is better than anything else.

"Haha~~Professor Ali Khan, you are polite, General Rahman, I have said, we and you are all brothers, you can say that you can see the outside, so nb-998 wants no problem, 100 million US dollars The price will not change, but we have one condition..."

At the time when Professor Ali Khan and others' interest in nb-998 reached its peak, Zhuang Jianye spoke at the right time. When Professor Ali Khan and others heard that they had the conditions, they immediately shook their hearts.