As the saying goes, the layman looks at the liveliness, and the insiders look at the doorway.

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

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

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

Take, for example, the most widely used diffusion bonding process today.

First, it is necessary to superimpose the reinforcing fiber and the metal sheet layer by layer like a stack of arhats, and then stand still for a period of time, and wait until the adhesive of the cured fiber is fully combined with the metal, so that the two materials that are superimposed on each other can be put into a professional container and begin to extract air, so that the container is in a vacuum state.

At this time, the electric heater starts to work, heating the two stacked materials in the container at high temperature to make them fuse with each other, and after cooling, the pressure is pressed to make the two materials completely diffuse and compatible.

The process of high temperature and pressure is long and complex, and often at the end of a day, not many composite sheets can be produced in a diffusion bonding furnace.

That's it, the key is that this kind of diffusion combination furnace needs to be supplemented by a complex vacuum environment and high temperature and high pressure supporting equipment, and often these equipment are very large in size, the structure is very complex, and the price is naturally expensive.

If so, as long as you can produce usable composites, it doesn't matter if it's expensive.

The question is that this kind of diffusion bonding furnace can not be bought and used with a little reading of the manual, what is the degree of vacuum control, how much is the appropriate heating temperature, and what is the pressure?

Even if you figure it all out.

Is the material heated or pressurized first?Or is it heated and pressurized together?If so, how many times do you have to do it together?If there is an interval between heating and pressurization, what is the interval to keep the material stable?

Such a vast amount of production data and process elements, equipment manufacturers will not tell you, you want? Yes!

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

Of course, the asking price of three or four times can get the hand is lucky, the most cheating is that the equipment is sold to you, but these core parameters are not given to you, completely take your money, and sleep in your body, you can't have a temper, otherwise people will strangle the accessories, and the things you spend a lot of money to buy will be waiting to become scrap metal.

Compared with NB-998 laser plasma spraying equipment is simply a subversive of the previous process, what high temperature, high pressure and vacuum, not at all, but with a more fine and advanced metal powder and high-energy laser beam replacement, just like the printer, in the uniform spraying of metal powder at the same time, the high-energy laser beam has been fused and solidified with these metal powders and glass fibers, so that layer by layer, can soon produce the required composite plates.

Not only is the efficiency several times improved, but the flexibility is far beyond the previous old process.

It is important to know that the diffusion furnace uses high temperature and high pressure to fuse the reinforcing fiber with the metal material, so the thickness of the material must be guaranteed, otherwise the superposition layer with insufficient thickness may be damaged and completely scrapped after high temperature and high pressure.

Therefore, if you want to make a thin and light aerospace component, you have to do second, third or even more follow-up processing after the blank is processed to obtain the required standard pattern.

NB-998 laser plasma spraying equipment is different, as long as the basic strength is guaranteed, if you want to produce thin materials, you want thick materials, it is nothing more than adding a few more layers of glass fiber, more layers of metal powder spraying, production is subject to processing needs, how to change how you want.

Not to mention the rest, during the time when the Pakistani military delegation entered the No. 7 workshop, Professor Ali Khan saw that NB-998 processed two kinds of plates.

One is three layers of 0.2mm thick aluminum plates, sandwiched between two layers of 0.3mm thick glass fiber layers, and made of composite plates with a thickness of 1.2mm thickness, which are mainly used for the skin cover of the Yun-15 aircraft.

The other is seven layers of 0.3mm thick aluminum plates, sandwiched with six layers of 0.5mm thick glass fiber, made into 4mm thick plates, which are used for the cabin floor of the Yun-15 aircraft and the stiffeners of some secondary structures.

The whole process of switching is very smooth, just a few commands entered by the operator on the control keypad.

Unlike those old processes, not to mention the single product, the follow-up processing is not small, because it needs to be thinned, cut, and even directly made into components with multi-axis machine tools, which is not much less complex than the production of composite plates, which virtually increases the cost, and the entire follow-up equipment is not affordable by countries with limited financial resources like Pakistan.

So no matter what else, but in terms of cost, NB-998 laser plasma spraying equipment is equivalent to simplifying two to three major processes, twenty to thirty necessary processes, and the cost control ability is simply against the sky, and a hundred million dollars is really cost-effective.

You must know that the old process is used, not to mention the processing equipment of the follow-up plates, just that set of complex and inefficient production equipment, without seven or eight billion US dollars, it is impossible to get it.

The equipment purchased by 700 million or 800 million US dollars is in full swing, which may not be as good as the production capacity of an NB-998 laser plasma spraying equipment.

What's more, the equipment purchased by seven or eight billion US dollars can give you the core production parameters?

Tengfei Group's NB-998 laser plasma spraying equipment does not have this to say, because people fully realize computer automation control, all parameters are input into the computer, and professional industrial software is used to control, there is no so-called equipment to buy back, the core parameters are cut twice Leeks disgusting thing, because all the parameters of Tengfei Group are completely integrated with the equipment, and buying equipment is equivalent to buying these core production parameters.

As for whether other countries can obtain the core manufacturing data of NB-998 control state and materials from these industrial software and computers, Professor Ali Khan wants to do so, but he can only smile helplessly.

Because all the data is restructured in computer language based on optimized mathematical algorithms, it is like the multi-meaning phrase "multi-person sports", which is first expressed in Latin and then presented to the public in Hebrew, and the old driver who said this phrase certainly understands the multiple meanings of the phrase beneath the surface.

Other people know so much, even if they go back to the original sentence of "multiplayer sports", they know that this may be a form of movement, how can it be clear that there is an indescribable alternative scene inside?

The difference is thousands of miles, once the deviation is not to mention the restoration, it is estimated that the entire cracking plan will be directly hit the street.

The important thing is to do this, if it can't be restored to its original state, the whole set of equipment will be completely scrapped, and then it will be the real stealing of chickens and rice.

So it's better to honestly buy the equipment back than anything else.

"Haha~~ Professor Ali Khan, General Rahman, you are polite, I said it, we are brothers with you, you will see the outside world if you say so, so NB-998 wants no problem, and the price of 100 million US dollars will not change, but there is a condition on our side......"

Just when Professor Ali Khan and others' interest in NB-998 reached its peak, Zhuang Jianye opened his mouth at the right time, and Professor Ali Khan and others immediately chuckled in their hearts when they heard that there were conditions.