God-level Miner

Chapter 709 We don't want it anymore!
As one of the leading aero-engine experts in China, Lin Yunwen has been worried about another problem after this engine solved the key material problem, which is the bearing problem.

For the time being, domestic bearings are used, and imported bearings are still being purchased, and the progress has been relatively slow.Lin Yun's expectation is that these domestic bearings should be able to withstand a series of verification tests, including 300 hours of long-term test runs.

Without thinking about it, Lin Yunwen was a little too optimistic. This aero-engine, which had been tested for 300 hours, had a major problem with one of the main bearings.

Under the magnifying glass, a very small "pockmark" appeared on the surface of one of the balls of the bearing. It was so small that it could only be seen clearly under the illumination of the light with the help of a magnifying glass.

This is a big deal!
Aviation bearings are absolutely different from ordinary bearings. If it is a bearing of general mechanical equipment, there is such a small defect, there is no problem at all, and it can continue to be used, but aviation bearings cannot!

For general structural components, safe use can be guaranteed even if there is a slight crack-this is professionally called damage tolerance, and there is no damage tolerance for key transmission components such as aero-engine main bearings. No damage of any kind is allowed during the process.

Seeing Wang Xudong's concerned question, Lin Yunwen said in a serious tone: "Mr. Wang, we have encountered a big problem. A short board in the wooden barrel principle has appeared. These domestic bearings basically represent the highest level of domestic bearing manufacturing, but these bearings The service life is only more than [-] hours."

The working environment of bearings in aero-engines can be described as "purgatory". They not only have to run at a speed of tens of thousands of revolutions per minute for a long time at high speed, but also bear various forms of stress extrusion, friction and ultra-high temperature.

Operating under conditions of high speed, high temperature and complex stress, the quality and performance of the main bearing directly affect the performance, life and reliability of the engine.One of the key indicators of an aero engine is high reliability.

In order to ensure reliability, one of the prerequisites is to ensure that the bearings in the engine have a long life—the life of the main bearing. Military aircraft aero-engines require more than 3000 hours, and civilian aero-engines have higher requirements, reaching tens of thousands of hours.

Obviously, the service life of these bearings is not enough, only [-] hours of service life, will seriously restrict the overall service life of this engine.

If there is no excellent aero engine, it means that even if this engine is mass-produced, it will need to be overhauled every [-] hours to replace the main bearing.

There was a big problem with the bearings. It is gratifying that the turbine blades of the engine are intact. It seems that these blades will not have any problems even if they work for thousands of hours.

For aero-engines, turbine blades are also one of the life-span parts. If the life of the blades is not enough, it will also be a big problem.

This big problem did not occur. After 300 hours of long-term testing and the test of high temperature, these turbine blades were intact. This made Lin Yunwen feel relieved. His frowning brows were finally relaxed.

Lin Yunwen said with emotion: "Everyone, take a look. It is indeed the super high-temperature alloy of Sanlian Special Steel Group. Such a material is definitely the world's top."

In this engine, many high-temperature parts use the super high-temperature alloy of Sanlian Special Steel Group, such as turbine discs, turbine blades, etc. From the current point of view, this material performs very well.

The cold parts of the engine use triple special steel super stainless steel, such as compressor blades, casings, etc. After inspection, the performance of the super stainless steel is also very good, even the color has not changed a bit, it is brand new!

Overall, this engine performed very well, the only shortcoming is that its domestic bearings did not perform well.

Are there imported bearings on this engine?there must be!
Wang Xudong picked up one of the imported bearings, which was a small bearing, not the main bearing of the engine.

It is estimated that the manufacturers of foreign bearings also know that this is not the main bearing of the engine, so they sold it to Huaxia, an aero-engine manufacturer, with confidence.

As for the main bearing of the engine, it is generally not sold.Even if it is to be sold, it must be limited and the price must be high.You don't have top-level aviation bearings yourself, and if others sell them at a high price, you can only pinch your nose to recognize them.

Because of this, Lin Yunwen had no choice but to use the domestic bearings. How could he know that the domestic bearings are not powerful and can only carry 300 hours.

Imported aviation bearings can be imagined with your toes, and they must be made of top-level bearing steel materials. Wang Xudong activated the "God-level Big Miner" system calmly, using this imported bearing as a sample, and began to "analyze "The bearing steel material of this bearing.

Soon, the "analysis" was completed, and Wang Xudong used the system to immediately generate detailed smelting technical materials for this bearing steel.

In other words, as long as this smelting technical data is given to Chen Sanlian, Sanlian Special Steel can smelt this bearing steel.

This is something produced by the system, and the samples used for analysis are imported aviation bearings, so the new type of bearing steel produced, needless to say, must be the top bearing steel in the world. There is no doubt about this!

You're done!

Came here to look for Lin Yunwen. Wang Xudong didn't come here to see some aero-engine. His main purpose was to get an imported aero-bearing, analyze it carefully, and generate a full set of smelting technical data. Now, it has been successfully completed.

In the database of the system, there is a kind of smelting technical information of the world's top bearing steel.The blue is better than the blue, and the new bearing steel material produced is definitely much better than the imported bearing material that is only used for analysis.

Holding the small imported bearing, Wang Xudong smiled and said, "Expert Lin, this is an imported bearing, right?"

Lin Yunwen said: "Yes, it is imported, and it is an excellent aviation bearing. It is just a pity that it is not the main bearing of this engine."

Because it is a technical blockade, foreign suppliers generally do not sell main bearings, but only sell such small bearings, and the price is still expensive and limited.

Wang Xudong said: "Expert Lin, I have good news for you. Sanlian Special Steel Group has developed the world's top bearing steel material and is preparing to smelt it. Soon, it will be able to sell the world's top bearing steel in large quantities."

what!
Lin Yunwen first stared at Wang Xudong blankly, and after a few seconds, he finally realized that he came over, excitedly holding Wang Xudong's hand tightly, and asked in disbelief, "Mr. Wang, what is this?" Really?"

Everyone around, including the technicians, was dumbfounded, feeling as if they had been hit by a huge pie.

I was worrying about the life of the bearings, but now it’s all right, Sanlian Special Steel Group has successfully developed the world’s top bearing steel!
The world's top, this point, everyone has never doubted, because the development of this bearing steel is the Sanlian Special Steel Group, which previously developed super stainless steel, super high-strength steel, and the super high-temperature alloy used in this engine. Not world class.

It is Sanlian special steel, and then develop a world-class bearing steel, no one will think it is impossible, and never doubt it.

Seeing everyone looking at him, Wang Xudong nodded vigorously, and said affirmatively: "Yes, the research has indeed been successful, the world's top bearing steel!"

With the world's top bearing steel, and relying on China's industrial strength, can't it still produce the world's top aviation bearings?Definitely can make it!
Not only the world's top aviation bearings, but also all kinds of world's top industrial bearings, because of the top bearing steel materials of Sanlian Special Steel, they will all be manufactured like mushrooms after rain.

Holding Wang Xudong's hand tightly, Lin Yunwen was so happy that he didn't know what to say. He opened his mouth several times, but he didn't say anything. He was so excited.

After a long time, he said, "Mr. Wang, you have done me a big favor again, no, you have done a big favor to the entire Chinese aviation industry!"

A middle-aged man was sweating profusely, walked over anxiously, and reported: "Mr. Lin, we have encountered a big problem in purchasing imported bearings. The overseas supplier who promised to sell us the bearings suddenly changed his mind. .”

The main bearings made in China are not strong enough, and imported bearings from overseas are not available. If he heard this question a few minutes ago, Lin Yunwen would probably get angry.Now, definitely not.

Lin Yunwen smiled happily and asked, "Mr. Wang, when will Sanlian Special Steel Group produce the first batch of bearing steel?"

Wang Xudong said with certainty: "It won't exceed three months."

With a complete set of smelting technical materials ready-made, coupled with the current strength of Sanlian Special Steel, three months is enough.

Hearing Wang Xudong's answer, Lin Yunwen took a reassurance, smiled happier, and said generously: "They don't sell it, and we don't want it. Tell them, we won't buy it!"

What, do not buy!
What about this engine? It is an engine for a new type of fighter plane urgently needed by the military. It is waiting for it to be installed in batches. Without imported bearings, how can it be mass-produced? Even if it is mass-produced, it is estimated that the service life of the engine will not increase .

As soon as he heard that the other party would not sell, he immediately came over anxiously. He didn't know that Sanlian Special Steel had successfully developed the world's top bearing steel material. He looked at Lin Yunwen with a puzzled face. With a happy face, he was even more puzzled.

What's going on here!
Someone among them reminded him, patted him on the shoulder lightly, and said with a smile: "Old Tan, just do as Mr. Lin said, we won't buy it, because we will have the world's top bearing steel material, we will Huaxia can produce the world's top aviation bearings by itself."

what!
We have the world's top bearing steel material, no way!
"Old Tan is true. Sanlian Special Steel has successfully developed the world's top bearing steel material. Our aviation bearings no longer need to be imported. They don't want to get stuck in our necks. If they don't sell them, we still don't buy them. "

So that's the case.

He turned around excitedly and left, wanting to tell that overseas supplier proudly that we don't want your bearings anymore!

.........

The third one is here!

That's all for today's update, thank you all! ! !

(End of this chapter)