"First of all, I want to correct one point, it is indeed Southwest Science and Industry that takes the lead in making breakthroughs in directional solidification without margin precision casting composite hollow air-cooled blades, which I admit, but our 624 Institute, 606 Institute, and Dawn Factory have not broken through this technology in cooperation is not that we 625 Institute is not working hard enough, but the 606 has obtained no margin precision casting technology is not complete, and it is obvious that the technology they get has a big loophole."

Saying this, he turned his head and looked at the representative of the Hongqi Factory who was begging for life under the same roof this time, when did the country first come into contact with the endless precision casting technology, and where did it get it, which 625 Institute can still know the inside story.

It was the ups and downs of the years, so that the representative from the Hongqi Factory had a breezy expression, and his face was full of this matter, all of which were not firm in the 606 Institute, and the information received was not complete, and this girl dared to sign

Yang Hui naturally knows that there is a greasy thing in this, considering that Southwest Science and Industry is also the beneficiary of this incident, of course, he must choose to let this matter turn over quickly, now everyone is a trough to eat, they are all like-minded friends who come for the same goal, there is no need to turn over the old accounts and hurt the harmony.

"This is all in the past, directional solidification without margin precision casting composite hollow air-cooled blades is already a thing of the past, not only our Southwest Science and Industry has applied this technology to the turbofan 10 engine, but also the dawn plant has also gotten this technology? We want to look forward, and monocrystalline turbine blades are what we need to consider. ”

Seeing that Yang Hui stood up and said that he wanted to uncover this period of history, this madman surprisingly did not continue to be stubborn, which is somewhat different from the madman's personality. I think it should be mixed up in the system for a long time, and the learning should be in moderation.

If you don't talk about the technology of providing unlimited precision casting in the Hongqi factory, it doesn't mean that he won't continue to spray the pig teammates of the 625 Institute. To say that the Hongqi factory does not provide all the technology is just hateful, then the performance of the 606 Institute in the whole project is even more ridiculous. It's so ridiculous that 625 can't hate him.

"Of course, even if there is no directional solidification technology, our 625 Institute can also optimize the manufacturing process and come up with a technology comparable to directional solidification without margin precision casting composite hollow air-cooled blades. But the problem is that the fools on both sides of Fengtian don't listen to people, they have to go to the dark on the same road, and they always can't listen to their advice, it's hateful! ”

Speaking of this, it is a gritted tooth, it seems that the dissatisfaction of the 625 Institute with the two cooperative units in Fengtian is far deeper than the hatred of the 625 Institute with the Hongqi Factory. There should be something hidden in this, that is, I don't know what it has to do with the industrial production of monocrystalline blades solved by 625.

It should be that the two former old teammates on the Fengtian side were completely disappointed, and in a few minutes, this madman from the 625 Institute adjusted and recalled the unbearable past and the unbearable pig teammates.

Now it's time to come up with some real skills, which is the foundation that the 625 Institute can gain a foothold in the entire Zhongtui core machine and occupy a technical share, and go to its own briefcase to take out a stack of materials. Pushed in front of Yang Hui.

"This is the technical strength of our 625 Institute, and we have also come up with a blade with a high temperature resistance of no less than the directional solidification without margin precision casting composite hollow air-cooled blade, which is now installed in the core machine in the external test, and the working environment is the stator blade behind the high-pressure turbine."

Hear here. Yang Hui finally came to the initiative, and the 625 Institute actually provided the first-stage high-temperature turbine stator blades of the core machine, which is indeed big news. It's a big satellite.

Why? It's so simple, the total temperature of the new Zhongtui core machine is as high as 1412 degrees Celsius. The stators that cling to the high-temperature turbine are also subject to high-temperature gas, although the temperature here is lower than that of the high-temperature turbine. But not much lower.

Under normal circumstances, the high temperature of the stator blade is the temperature of the previous turbine minus about 30 degrees, but this temperature is also not low, you need to know that the total temperature of the upper turbine is as high as 1412 degrees Celsius, even if it is calculated according to the maximum temperature attenuation, minus 30 degrees Celsius, there is still 1382 degrees Celsius, what is this concept?

As an example, the early model of the F100 engine in the United States used directional solidified alloy turbine blades at great speed, and the total temperature only reached 1399 degrees Celsius, and the early model of the F110 engine was also only 1371 degrees Celsius.

Now in Leng Buding said that 625 can manufacture stator blades that can reach a high temperature of up to 1382 degrees Celsius, this is not a satellite, what is it, it is higher than the total temperature of the turbine of the early model of F110, with such a powerful technology, the turbofan 10 engine of Southwest Science and Industry is only 1286 degrees Celsius, I am afraid that it has long been pulled to eat dust, and how can there be a turbofan 10 behind a strong reverse thrust turbojet 14.

With all kinds of disbelief, Yang Hui opened the information in front of him and began to see what kind of stator blade was provided by the 625, and there was such a powerful blade manufacturing technology.

Page by page looking at this thin piece of paper, the introduction is always secretive, it seems that the 625 Institute of technology in this is secret, the only thing that can see some news also surprised Yang Hui, this turbine blade is actually from the Southwest Science and Industry successfully developed directional solidification no margin precision casting composite hollow air-cooled blade improvement, this Yang Hui was stunned.

When is it so Crouching Tiger, Hidden Dragon in China, when Southwest Science and Industry itself has not improved the directional solidification of precision casting composite hollow air-cooled blades with no margin, the former opponents actually got their own transferred technology, and rushed to the front to improve, optimize and upgrade the technology.

After putting down the information in his hand, Yang Hui felt that the whole person was not good at this time, it turned out that he still underestimated the heroes and heroes of the world, the same technology, get 625 and improve slightly, it can carry 100 degrees Celsius more than the products produced by Southwest Science and Industry itself, what else is there to say.

As long as the technology of 625 can be mass-produced and produced in large quantities of new blades, this is the backup high-temperature turbine blade of the new push-core machine, anyway, such a high temperature is enough to carry the use of the push-in core machine.

"Is it really that powerful? After you improve the directional solidification without margin precision casting composite hollow air-cooled blades, the maximum total temperature can be increased to 1386 degrees Celsius, which is nearly 100 degrees Celsius higher than the turbofan 10 turbine of the Dawn Factory, which is used in the turbofan 10 engine? ”

Yang Hui excitedly asked all the questions about this new blade, if the 625 answered "yes", then Yang Hui will immediately pull the 625 into the industrial production process development team of the single crystal turbine, and even the subsequent improvement of the turbofan 10 engine produced by Southwest Science and Industry should also consider replacing the newer generation of turbine blades.

At this time, Yang Hui had already affirmed the ability of the 625 Institute, and he was very happy in his heart, and began to imagine a better future.

But the answer of the madman of 625 Institute was not what Yang Hui expected, there was no ecstasy of victory, there was only boundless regret, the blades produced by this model of process developed by 625 were not so good, and it also had its own weaknesses.

Of course, I want to say: 'Yes, the high-temperature blades developed by our 625 Institute are so good', but the researchers never bother to panic, let alone lie, and they will blush after panicking, which is unacceptable for a middle-aged uncle in his thirties and almost forty years old.

"This is not the case, we have only made a further process improvement on the directional solidification technology on the basis of the directional solidification of the composite hollow air-cooled blades with no margin, so as to control the direction of the crystal branches more accurately, so that it has a better high-temperature resistant structure."

After halfway through the words, he suddenly didn't continue, and it seemed that there were some major defects in the high-temperature blade of 625

The introduction of the weaving can only be continued by Chief Engineer Liu, who is familiar with the engineering design of the entire core machine, and the introduction of the situation also makes Yang Hui sigh.

"After having a better high-temperature resistant structure, the original relatively balanced mechanical properties have been greatly degraded, especially the high-temperature creep resistance has been greatly reduced, and it is far less than the turbine blades originally used in the turbofan 10, and this high-temperature creep performance is relatively poor, and can only be used to make stator blades in the stator ring that does not need to run at high speed with the rotor."

After listening to the introduction, Yang Hui finally understood the ins and outs of this high-temperature turbine blade, it turned out that this is a serious high-temperature blade, which is really joyful.

Since it can't be made of turbine blades, the new mid-push core machine can only continue to go all the way to the black on the road of single crystal blades, and the improvement of the turbofan 10 engine can only be an improvement to the tail nozzle.

Yang Hui admires the ability of the 625 Institute very much, and is also very sympathetic to their suffering, if they make this type of high-temperature blade at the same time has a high resistance to high temperature creep, then everything will be different, maybe the threshold of the 625 Institute has already been stepped on by the major aero engine production and development units.

But the reality is so cruel, not everyone is lucky, can be a variety of different material ratios, production and processing processes to meet just the right materials, more often are the end of failure, 625 is actually quite good, they at least came up with a high temperature blade that can be used for stator rings, which is also a great discovery.

But at this time, Yang Hui still has to talk about the same thing: "Does the technology used now have anything to do with the industrial production of monocrystalline?" Although they all achieve better performance by controlling crystal growth, there is a big difference between the control of single crystal and directional solidification alloys, which the comrades of the 625 Institute must also know. ”

Yang Hui continued to ask about this now, and after the introduction of what he should know in the early stage, the 625 madman raised his head and said a sentence.

"The reason why we can precisely control the branch direction of the directional solidified alloy is that we use some technology to control the production of single crystals, which is the secret recipe of the 625 Institute, and I participated in a marginal subject related to single crystals when I was studying in the United States." (To be continued.) )