Chapter 449 Material breakthrough, everything is alive
Not long after, Chang Haonan received the test results from Xingcheng Special Steel.
Download it as quickly as possible and then open it.
The new computer the school assigned him has good performance and can even open two forms at the same time without lag, which makes his office experience more than a little better than before.
For a person who has become accustomed to modern office methods, holding several printed paper forms every time and comparing them one by one is simply an eyesore and a brain injury.
"These two materials... seem to be somewhat different..."
After extracting the key data and comparing them, Chang Haonan rubbed his chin and thought.
Metallurgy can be said to be an open question with 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 having the same origin, after all, they are all derived from the set of process design methods provided by him, but they are different from other materials. The situation of special steel companies is similar. Due to differences in past experiences and habits, the specific processes eventually launched will not be exactly the same.
Generally speaking, Xingcheng Special Steel's products are more suitable for bearings.
The surface hardness and core hardness of Northeast Special Steel are greater, which is relatively more suitable for making gears.
Of course, the difference is definitely not too big, and there is no big problem if you really want to use them interchangeably.
Bearing steel and gear steel are often the same base material, and the manufacturer can just take it back and perform different post-processing.
It’s just that aircraft engine bearings are not used in large quantities, and they are still in trial production, so we must choose the most suitable one.
Although Northeast Special Steel is an enterprise in Chang Haonan's hometown of Liao Province, it is not easy to harm the public and private interests at this time.
So, he picked up the receiver of the red landline on the table and made a call to Liming Engine Company in Shengjing.
"Hello, I'm Chang Haonan, help me transfer Mr. Zhong."
Chang Haonan and Zhong Shihong are also old acquaintances, but in front of each other's subordinates Definitely still need to be more formal.
Positions in the workplace.jpg
"Wait a moment."
Soon, after a dial tone that lasted for a few seconds, the phone was reconnected.
"Mr. Chang, you are looking for me."
"Zhong Gong, Xingcheng Special Steel Company in Jiangsu Province has developed a new type of bearing steel with better performance than M50NiL. Judging from the material properties, it can be used in third-generation turbofan engines. You should contact the three companies of Compound Shaft, Luo Shaft and Ice Shaft as soon as possible and ask them to provide some samples for basic performance testing.”
"Wait...better than M50NiL?"
As an old technician at Liming Factory, Zhong Shihong naturally knows a lot about aircraft engine bearing steel, although he is not a metallurgist.
The bearing steel used by Huaxia before the 1990s was mainly the first generation ZCCr15, a typical high-carbon chromium steel that came out in 1901.
Of course being old does not mean being backward. This kind of steel is still widely used in high-speed railways and precision machine tools, but it is not suitable for the harsh working environment of aerospace engines.
Until the mid-1990s, the domestic application of the second-generation bearing steel M50 was finally realized on turbojet 14 and turboshaft 8, but the research on this material was still far less in-depth than that in developed countries.
As for M50NiL, he had never thought of using it in the turbofan 10 project.
This is also a worry for Zhong Shihong.
After all, the working environment of the third-generation engine bearings is worse than that of the second-generation engine. If the bearings of the turbojet 14 are 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 been released yet. Mr. Chang called and told him that this problem has been solved?
“Yes, you can contact the bearing supplier for this. Some time ago, I also designed a series of brand-new ball bearings and roller bearings with several experts in the field of mechanical design, combined with new bearing steel , it is completely possible to achieve the same life span of the bearings and the whole engine on the third-generation engine!”
"This...I...god..."
Zhong Shihong on the other end of the phone was already a little dazed by the huge surprise. He sat at his desk and calmed down for a while before finally calming down:< br>
"Mr. Chang, if this bearing passes the basic performance test, will it be installed on the turbofan 9 first for installation testing?" Although Chang Haonan is only nominally the chief designer of the Taihang engine, and the turbofan The 9 project is still entirely under the responsibility of Factory 430, but now almost half of Factory 430’s R&D and production teams are here in Shengjing, so he can actually direct two projects at the same time.
So he immediately gave a positive answer:
"Yes, before the detailed design plan of the turbofan 10 is released, our Liming Factory will connect all the technologies related to the production process with the 430 factory and conduct tests on the turbofan 9, so that the design work and the production work will not be delayed. It can also solve the problem of localization of turbofan thrusters."
Strictly speaking, this operation is of course a bit unsophisticated, but China's foundation in aviation power is really poor, and not only is its capital investment limited. , even the scale of R&D and production personnel is insufficient to complete two large projects at the same time.
However, these two types of turbofan engines are key subsystems of key models, so Chang Haonan can only use this method to maximize resource utilization.
This is why, in his proposal in the morning, he strongly opposed splitting the Aviation Industry Corporation into two groups with the same business to engage in so-called "competition in the same field."
How many dishes can you drink like this?
On the other side of the phone, after hesitating for a moment, Zhong Shihong decided to put aside the past grievances between the two factories:
"Okay, Zhang Zhenhua happens to be in our factory now, and it is easier for me to work through him. Convenient. ”
The world is huge, and the project at hand is the biggest.
After this matter is completed, even if the 430 factory can get a mature turbofan engine model for almost nothing, but if you really want to calculate it, it is he and Liming Factory who will gain the most.
The identity of the "big brother" of aviation power is absolutely unshakable.
...
After settling the most important matter at hand, Chang Haonan then responded to several faxes, confirming that Xingcheng Special Steel was the point A supplier of steel for aircraft engine bearings, while Northeast Special Steel was Supplier of Point B - In this era, email is not yet a formal means of communication in China, so formal documents still have to be delivered by letter, telegram or fax.
As for the so-called AB point suppliers, they refer to the configuration of the AB corner of the drama to avoid occasional uncontrollable factors from having a huge impact on the project progress, which is part of risk management and control.
It was not yet popular in the 1990s, but in the future everyone will gradually establish this awareness through bloody lessons.
Of course, this does not mean that Northeast Special Steel has lost its opportunity.
Publicly and privately, Chang Haonan could not let their efforts go to waste.
As the basis of all manufacturing industries, huge breakthroughs in the field of materials are not just beneficial to one project.
Especially gear bearings, which have always been a shortcoming of China's manufacturing industry.
Of course, Chang Haonan believes that both Xingcheng Special Steel and Northeast Special Steel are already considering bringing this new material to the market.
But it still takes time to gain market recognition.
After thinking for a long time, Chang Haonan picked up the phone again and dialed a number from the Science and Technology Commission.
Only this time the call was not made directly to Ding Gaoheng.
After all, the other party is the director of the Science and Technology Commission, so it is impossible to directly trouble him with every little thing.
"Hello, Secretary Lan, I am Chang Haonan."
"Comrade Haonan, I have something to tell you."
Although Chang Haonan currently does not have any formal position in the Science and Technology Commission, almost everyone knows that, except for Ding Gaoheng himself, his voice in the Science and Industry Commission is almost equal to that of several deputy directors.
Let alone someone like Secretary Lan who can stay with a big leader.
As long as it does not violate principles, Chang Haonan will be his second leader.
"Please make a list of the projects that are currently applying for the Seiko Plan and send it to me."
Chang Haonan is naturally planning to find a few suitable ones to allocate to Northeast Special Steel.
He needs a bowl of water to keep it level.
"Okay, I'll do it right away!"
(End of this chapter)