It didn't take long for Chang Haonan to receive the test results from Xingcheng Special Steel.

Download it as fast as you can, then open it.

The new computer that the school has given him is very good, and he can even open two forms at the same time without stuttering, which makes his office experience more than a little better than in the past.

For a person who has become accustomed to modern office methods, it is simply an eye-wrenching and nerve-wracking thing to hold several printed paper forms one by one every time.

"These two materials...... It seems like there's a little bit of a difference......"

After refining and comparing the key data, Chang Haonan touched his chin and thought.

Metallurgy can be said to be an open-ended question, and there is no standard answer.

At least not yet.

Therefore, although the new materials made by Xingcheng Special Steel and Northeast Special Steel can be regarded as the same mother, after all, they are all deduced from the set of process design methods he provides, but the situation is similar to that of other special steel enterprises, due to the different experiences and habits in the past, so the specific process that will be introduced in the end will not be exactly the same.

In general, Xingcheng special steel products are more suitable for bearings.

The surface hardness and core hardness of Northeast Special Steel are greater, which is relatively more suitable for gears.

Of course, the difference is certainly not too big, and there is nothing wrong with really changing it.

Bearing steel and gear steel are often the same substrate, and the manufacturer can just take it back and do different post-processing.

It's just that the amount of aviation bearings is not large, and it is still trial production, so it is necessary to choose the most suitable one.

Although Northeast Special Steel is an enterprise in Chang Haonan's hometown of Liao Province, it is not good to damage the public and private at this time.

So, he picked up the earpiece of the red landline on the table and made a phone call to Shengjing's Dawn Engine Company.

"Hey, I'm Chang Haonan, help me transfer your Mr. Zhong."

Chang Haonan and Zhong Shihong are also old acquaintances, but they must be called more formal in front of each other's subordinates.

The workplace is called the job .jpg

"Wait a minute."

Soon, after a dial tone that lasted for about a few seconds, the phone was reconnected.

"Mr. Chang, you look for me."

"Zhong Gong, Xingcheng Special Steel Company in Jiangsu Province has developed a new type of bearing steel with better performance than M50NiL, which can be used in the third generation of turbofan engines in terms of material properties.

"Wait...... Better than M50NiL? ”

Zhong Shihong, as an old technician of Liming Factory, although he is not a metallurgical professional, naturally knows a lot about this kind of thing as aviation bearing steel.

The bearing steel used by Huaxia before the 90s was mainly the first-generation ZCCr15, a typical high-carbon chromium steel that came out in 1901.

Of course, old does not mean backward, this steel is still widely used in high-speed railways and precision machine tools, but it is not suitable for the harsh working environment of aero engines.

Until the mid-90s, on the turbojet 14 and turboshaft 8, the localization of the second generation of bearing steel M50 was finally realized, but the research on this material is still far less in-depth than that of developed countries.

As for the M50NiL, he had never thought of using it in the Turbofan 10 project.

This is also a piece of Zhong Shihong's heart.

After all, the working environment of the third-generation engine bearing is worse than that of the second-generation engine, and if the bearing of the turbojet 14 is moved to the turbofan 10, the first turning cycle may be lower than 150 hours.

That's almost unacceptable.

As a result, now, even the overall design of the turbofan 10 has not come out, and Mr. Chang came over with a phone call and told him that this heart disease has been solved?

"Yes, you can connect with the bearing supplier, just some time ago I also designed a series of new ball bearings and roller bearings with several experts in the field of mechanical design, combined with the new bearing steel, it is possible to achieve the same life of the bearing and the whole machine on the third generation engine!"

"This ...... I...... Oh my God......"

Zhong Shihong on the other end of the phone was already a little dazed by the huge surprise, and after sitting at the desk for a while, he finally calmed down a little:

"Then Mr. Chang, if this bearing passes the basic performance test, should it be installed on the turbofan 9 for installation testing?"

Although Chang Haonan is only the chief designer of the Taihang engine in name, and the turbofan 9 project is still completely in charge of the 430 factory, almost half of the R&D and production teams of the 430 factory are now on Shengjing's side, so he can actually command two projects at the same time.

So he immediately gave an affirmative answer:

"Yes, before the detailed design plan of the turbofan 10 comes out, all the technologies related to the production process, the dawn factory will dock with the 430 factory, and test on the turbofan 9, so that the design work and production work will not be delayed, and the localization problem of the turbofan can be solved by the way."

Strictly speaking, this kind of operation is of course a little unsophisticated, but Huaxia's foundation in aviation power is too poor, not only the capital investment is limited, but even the scale of R&D and production personnel, if you want to complete two major projects at the same time, it is also stretched.

However, these two types of turbofan engines are the key subsystems of key models, so Chang Haonan can only use this method to maximize resource utilization.

This is also why in his proposal this morning, he strongly opposed the so-called "competition in the same field" by dividing the Aviation Industry Corporation into two groups with the same business.

How many dishes do you drink like this?

On the other side of the phone, after hesitating for a moment, Zhong Shihong still decided to put down the grievances and grievances of the two factories in the past:

"Okay, it just so happens that Zhang Zhenhua is also in our factory now, and it is more convenient for me to work through him."

The world is big, and the project at hand is the biggest.

Besides, after this thing is done, don't look at the 430 factory, which can almost prostitute a mature turbofan engine model for nothing, but if you really want to calculate it, it is still him and the Liming factory that have the greatest benefits.

The identity of the "big brother" of aviation power is absolutely unassailable.

……

After solving the most important matter at hand, Chang Haonan then replied with several faxes, confirming that Xingcheng Special Steel was the A-point supplier of aero-engine bearing steel, and Northeast Special Steel was the B-point supplier-e-mail in this era was not a formal means of communication in China, so the official document still had to be delivered by letter, telegram or fax.

As for the so-called AB point supplier, it is a part of risk management and control to avoid the configuration of the AB angle of the drama to avoid occasional uncontrollable factors that have a huge impact on the project progress.

It wasn't even popular in the 90s, but everyone will gradually build up this awareness in the bloody lessons.

Of course, this does not mean that Northeast Special Steel has lost the opportunity.

In public and private, it is impossible for Chang Haonan to let their efforts go to waste.

As the foundation of all manufacturing industries, a breakthrough in materials is not just for a project.

Especially the gear bearing, which has always been a short board in the Chinese manufacturing industry.

Of course, Chang Haonan believes that both Xingcheng Special Steel and Northeast Special Steel must have been considering bringing this new material to the market.

But it will take time to gain market recognition.

After thinking for a while, Chang Haonan picked up the phone again and dialed a number from the Commission of Science and Technology.

It's just that this time it wasn't directly to Ding Gaoheng.

After all, the other party is the director of the Commission of Science and Technology, and it is impossible to directly trouble people with any trivial matter.

"Hey, Secretary Lan, I'm Chang Haonan."

"Comrade Haonan, you have something to order."

Although Chang Haonan does not have any official position in the Commission of Science and Technology now, almost everyone knows that except for Ding Gaoheng himself, his voice in the Commission of Science and Technology is almost on the same level as several deputy directors.

Not to mention a person like Secretary Lan who can follow the big leader.

As long as it does not violate the principle, Chang Haonan is his second leader.

"Please make a list of the projects that are currently applied to the Seiko plan and send it to me."

Chang Haonan is naturally ready to find a few suitable ones from it to give to Northeast Special Steel.

He needs a bowl of water to be level.

"Okay, I'll do it right away!"

(End of chapter)