Chapter 1238

"There are still five such workshops in the park, which are equipped with 80 nb-996plus Metal 3D printers in total. At present, if six workshops are fully producing, one wd-18 high integration small turbojet engine can be produced in an average of four and a half minutes.

According to our overall design of dzb-2000t, the service life of wd-18 is only 3 hours. However, thanks to the excellent process capability of nb-996plus Metal 3D printer, in fact, the actual service life of wd-18 produced by integrated processing reaches 12 hours, which is 4 times of our theoretical service life.

Therefore, similar enterprises at home and abroad generally take no more than 3 minutes to test this kind of one-time turbojet engine, but China Tengfei has increased the factory test to 5 minutes, which proves the reliability of our process from another angle.... "

Just when senior researchers and others were surprised by the production situation on site, Zhuang Jianye slowly began to introduce the production situation of wd-18 small turbojet engine.

As a result, senior researchers and others didn't listen. It's OK. When they heard this, they all felt a thump in their heart, and almost didn't startle their chin.

No way. I really didn't expect that the service life of wd-18 would reach double digits. It's good to know that this kind of one-time vortex jet equipped on the missile can have a service life of several hours. After all, it's going to blow up a pile of scrap iron together with the missile. It's a waste if the service life is too long.

However, the manufacturing process of this kind of small turbojet engine is not simple at all. At least, the stability of this kind of small turbojet engine must be 100% reliable in its service life.

Because of this, this kind of small engine can be simplified in some thermal parts such as turbine blades and combustion chamber, but on the whole, it still depends on forging as support. It can even be said that this kind of small turbojet is supported by forging.

Only in this way can the expected stability be achieved in a short period of several hours.

However, at this moment, the wd-18 has exceeded the service life of traditional products by several hours, reaching an unprecedented 12 hours.

What does that mean?

With such a long time and enough fuel, the range of cruise missiles can be increased by several times, which is an absolute combat multiplier.

However, in the eyes of senior researchers and other technicians, it is not just to enhance combat effectiveness, but to completely subvert the tradition.

Zhuang Jianye made it clear that the reason why wd-18 has a high integration in front of the small turbojet engine is mainly because 78.6% of wd-18 is produced by nb-996plus Metal 3D printer.

That is to say, except for some screws, gears or bearings, almost all the important parts of wd-18 are made of nb-996plus Metal 3D printer.

As a result, the number of wd-18 parts is reduced from 3200 to 64, and the production cycle is shortened from 28 days to two and a half hours.

Whether it's maintainability or production cost, I don't know how many times stronger than the traditional manufacturing process.

However, this is not the focus that senior researchers and others pay most attention to. The key they care about is the fact that nb-996plus Metal 3D printer subverts their three views.

There's no way. A wd-18 in the corner of the workshop is being sampled and tested. It's necessary to do a life-cycle test in order to evaluate the quality of this batch of products.

Now the wd-18 has been running for more than 8 hours, the value on the monitoring screen is still stable, and there is no sign of scrapping.

To this extent, it is enough to show that the manufacturing process of wd-18 is quite perfect.

In other words, the quality of the integrated forming parts made by nb-996plus Metal 3D printer is not inferior to that of high-precision forgings, and even slightly better in a sense.

This means that the workshop, equipment, physical objects and tests are all at a glance. Otherwise, even if the dead are alive, senior researchers and others will not believe that additive manufacturing can really produce high-quality metal parts comparable to traditional forgings.

However, the Americans have directly put an end to the prospect of this technology. Almost domestic experts and scholars, including senior researchers, have accepted the conclusion of the Americans.

But now, the conclusion of the Americans is in the busy production of nb-996plus Metal 3D printer, which is refreshing their three views again and again.

Are Americans wrong?

China's take-off technology has reached this level?

In China, metal additive technology can be used to make metal parts with the same quality as forgings?

……

Numerous questions are stirring in the minds of senior researchers and others, so that they feel that they are dreaming at a certain time? Or in a different space?

Otherwise how can have a kind of unreal feeling!

It's no wonder that senior researchers have such a state of mind. The traditional forging manufacturing process is too complicated. It needs more than 20 processes, such as forging, machining, forging and welding, to cooperate with each other.Each of them is the technological peak in the field of industrial manufacturing in the world.

In terms of machining, five axis or seven axis machine tools are generally used for precision machining. It is necessary to process several tons of metal billets to an ultra precision state of only a few hundred kilograms.

Secondly, the most important thing is that once the equipment is started, it can't stop until the whole part processing is finished. As a precision part in aerospace, the required precision is very high. Because the tool of the equipment stops filing a few threads, the parts worth hundreds of thousands or even millions will be completely scrapped.

Because of this, this kind of machining equipment not only needs high precision, but also has extremely high stability, and the most important thing is to wait for a very long time.

In addition to the United States, France, such as a very small number of developed countries can produce, there is no substitute in the world.

This is also the base for the developed countries to firmly grasp the aerospace manufacturing industry and grab excess profits in the world. Even if they give the developing countries half a century to catch up, they may not be able to catch up. Even if they catch up, the technology of the developed countries has already broken through to a new stage, so that you can't see the taillights, and you are so desperate that you just call mom.

Of course, this is only an ideal state. In reality, the developing countries may not wait to catch up, and the developed countries will directly strangle your expectations with various names.

Let you even have no time to give birth to the heart of despair, just be obedient!

However, all this seems to have been directly broken by nb-996plus Metal 3D printer, such as ten thousand ton forging equipment, five axis and seven axis machine tool, high precision, high stability and ultra long standby. Let's go. I'll go over and directly integrate the molding.

It's like marrying a daughter-in-law. The traditional custom of three matchmakers and six hires, eight sedan chairs and running water banquets can drive people crazy. The new avant-garde idea is to get a marriage certificate and go directly into the bridal chamber.

This kind of impact is shocking enough for young people, not to mention senior researchers and old technicians. Where can we go without subversion?