Basic materials are the key to the development of all mechanical technology and equipment, especially some very important top materials.

These materials, that can't be sloppy at all, Liu Yijiu knows what these people think, first come up with one, solve the current dilemma, and then slowly make the same, and constantly improve. This is the path that each country takes, and in this way, it is possible to accumulate a lot of experience and technology.

But he couldn't wait.

If you want to prepare for the next fighter, you will have to work superalloys. The aviation of the republic is largely limited by this material. The research work of turbofan 6 has ended, if it weren't for Yang Wei and the Tu-22M2 backfire they stole back from Lao Maozi's country, the fate of this team would be the same as before, it was split, and then part of it went to the big aircraft factory in Shanghai, part of it went to Qin Fei, and the other part went to Shen Fei.

Now, after the measurement of the Backfire bomber, they will start a new generation of engine research, Lao Maozi in engine technology, far from the Chinese can compare, even the Americans, in this regard, are even worse than Lao Maozi.

And this engine technology is built on advanced superalloys.

The operating temperature is very high, and at the same time, the working conditions are extremely harsh, and the service life is very long, which is not a problem that can be solved by the 760 °C superalloy that the Republic has already touched the threshold, and if this alloy makes an engine, in the end, the service life will not exceed two hundred hours.

An engine would cost millions of dollars. In this case, the resulting engine would cost the aircraft more than $10,000 on the engine alone, which is a twin-engine heavy fighter. A single shot costs $5,000 an hour!

How could the poor Republic Air Force afford such a high cost of flying?

Liu Yijiu discussed with Zhao Maoping all the way, and soon entered the research workshop where Jia Yiming was. This workshop is the largest base in the entire second district, in which there is not only a complete physical and chemical analysis room, but also a variety of process equipment from the initial to the sintering of materials.

"Teacher Jia, what's wrong with you? How many days have you not rested? "Liu Yijiu hasn't seen Jia Yiming too much time now, this old man is in the second district. His original dormitory was in the third district, and his son attended the school in the base. The accommodation was over there, and Jia Ling entered the firearms research and design room in the third district, but he made a home in the second district.

"You're here? I've been thinking about how to improve the purity of various materials, and these are chemically purified without a problem. The point is that it is not possible to use smelted materials now. "Jia Yiming didn't treat you as an ordinary technical researcher.

Shi Changxu is also very accomplished in superalloys, and after Yao Tongbin was killed, he led the research team to work on the top materials needed for the aerospace industry of the entire republic.

"Electroslag furnace remelting technology, if we want to produce cannon steel, we must use this furnace to re-smelt the refined materials again, so that the obtained steel will further reduce impurities......" Liu Yijiu sighed.

At the beginning, he was so busy that he forgot to talk about the remelting of the electroslag furnace, and Wang Shunyi was also busy working on his missile project all day long, and he wanted to make better missiles. So I forgot that Zheng Hao was not in the base at all, counting on him. Can't count on it.

Originally, Liu Yijiu thought that there was no such technology in China, and after knowing that the Shanghai Heavy Machinery Factory had this production technology since the 60s, he was always thinking about when to get a set of electroslag furnace production equipment from there.

Without it, they wouldn't have been able to make a new type of cannon steel.

"Does that thing really work?" Jia Yiming obviously didn't believe this, there was no such material provided by Liu Yijiu in China, where did he get it. Jia Yiming didn't bother to ask at all, as long as he could get the materials out. Let the progress of some domestic research be accelerated, and he will be satisfied.

"Why didn't it work? The tank gun steel is purified by electroslag furnace remelting, so that the performance can be about doubled! Aren't our domestic 541 and 617 all using this technology? The new type of artillery steel, since there are many impurities, can also be further purified by such a method...... "Liu Yijiu is a little puzzled, Jia Yiming will make such a mistake?

Hearing his words, Jia Yiming immediately patted his head and said in annoyance: "If I knew this, I wouldn't have to use the chemical treatment process to obtain these material elements......

Liu Yijiu rolled his eyes directly when he heard this.

Such a top-notch big man would also make such a low-level mistake?

Isn't that a little too incredible?

"Wait until the end of the year, let's send someone to Shanghai to get a set of equipment from there, and then try again." This is about to be the New Year, it is estimated that there is also a holiday, we are in a hurry is useless, or to engage in other aspects of theoretical research work first, especially the design of the equipment we need in the field of superalloys, the introduction of these equipment from abroad, not to mention, we have no foreign exchange at all! Moreover, they all know what these things are for, so naturally they will not be polite to us...... "If you want to introduce superalloy powder metallurgy process equipment, even if you are now in the initial stage of the honeymoon period in Central and Western countries, Liu Yijiu will not have much hope."

Superalloys, which are necessary for aerospace, and jet engines cannot be built without them.

There have been a lot of research results on superalloys in China, but there is no way to make the engine have a higher service life of these superalloy materials, and the superalloys used for intercontinental missiles are enough to use less than an hour at the working temperature of the rocket engine, and at most more than an hour, and the general superalloys can achieve such performance.

Aircraft engines are different, this kind of needs to be reused repeatedly, so that the requirements for materials for this aircraft engine are much higher than those for rocket engines.

"In what year's time, let's go over there now! They shouldn't have a holiday over there, right? The whole country is in ruins! Jia Yiming has not worked for many years, and now he has resumed his work at the beginning, and after a period of adaptation, he has devoted himself to it.

Like everyone else in the base, they had been wasted too much of their time.

"Just because we don't have a holiday doesn't mean they don't have a holiday. If there are not enough production tasks, their usual work may not be full...... "For the Shanghai Heavy Machinery Factory, Liu Yijiu knows that the situation of this factory is not very good now.

The country's investment in the aviation industry is not very large, especially since many aviation projects are now facing the dilemma of dismounting.

Liu Yijiu chatted here for a while, and now he didn't dare to reveal some of the material process formulas, on the one hand, so as not to make Jia Yiming and them tired to death, and on the other hand, to prevent himself from revealing too much, many things, he had no way to explain the source.

Just by virtue of his teachers, he can't say anything at all, what his teachers didn't come up with, he got it out, and he didn't see what experiments he did, what research he did, and in the end, others smelled it, what else could they say? I can't explain it.

Just as his teacher, Mr. Qian Xuesen, is also an expert in nuclear physics, this is only known to a few people, and outsiders only know that he is an expert in missiles. Liu Yijiu's other teacher, Zhu Guangya, admired him very much.

Can someone who can talk to Zhu Guangya have no achievements?

The book "Engineering Cybernetics" written by Qian Lao back then* is admitted to be a book from heaven!

People who don't know how to do it can't grasp these professional knowledge at all.

"However, without these materials, our engines would not be able to be made at all, and the problem is not the missile, but the aircraft? Unless we don't do the aircraft engine project, the turbofan six project team has not been able to make progress in terms of materials, so ......" Zhao Maoping is also very concerned about this matter.

Their ambitions have now swelled to the point of getting the key materials for aircraft engines.

They know better than anyone how strong the republic's demand for new aircraft is.

"It's not something that can be solved in a short period of time. Anyway, now the turbofan six team is still continuing to build the turbofan six in Rongcheng, and if they want to get the engine of the Tu-22, they don't want to ......start it in half a year to a year," Liu Yijiu sighed.

He's more anxious than anyone else.

The sooner these technologies are developed, the less arrogant the United States will be after the collapse of the Soviet Union.

If he dares to drive an aircraft carrier to the republic's doorstep to conduct military exercises, then the republican will directly dispatch a group of bombers and fighters with low-altitude supersonic penetration capabilities to conduct exercises in that area, flying over the heads of their aircraft carriers, and see if the Yankees will pee their pants when the time comes.

The Republic pursues a defensive strategy and does not take the initiative to attack any country.

"How long does this have to delay our new aircraft to get into the sky!"

"There's no way around it. If you have a chance to get it, that's pretty much it. Isostatic pressing equipment must be made first, large high-frequency furnaces and vacuum induction furnaces must also be made, we will engage in a variety of high-hardness and high-strength materials in the future, except for powder metallurgy, there is no other way. The melting point of various material elements is different, that is, there is a way to melt some materials away, and eventually the properties will change because other matching element materials exceed the boiling point...... (To be continued)