Rebirth 2008: I Can Make Money Reading

Chapter 427 Which Bearer is Strong in the World? Huaguo Jiangnan Looks for Xinghai

Mu Yang has been busy in Shanghai Aircraft Company for two days, and finally finished his work.

He also visited the leap-1c aero-engine purchased by SAIC from CFM International.

Mu Yang has not yet purchased the technology of aero-engines, so he does not have a deep understanding of the specific technologies of engines. However, he has purchased the technology of civil aviation large aircraft, and is familiar with technologies other than civil aviation large aircraft engines.

He visited the leap-1c aero engine, academician Wu Hui explained the technology of the engine for him, and thought that Mu Yang was just curious.

"Academician Wu, it's not easy to manufacture this rotor blade."

The rotor blades of an aero-engine have curved surfaces. If conventional machining methods are used, it is very difficult to ensure that each blade is exactly the same.

If the shape is not the same, the weight will be different, and the rotation will be unbalanced, and the repetition rate of the blades will be poor, that is, each group of blades is not completely the same.

Now Xinghai Group has solved the metal additive technology. For them, manufacturing blades is not a problem at all. Like other metal 3D additive manufacturers, the technology is not up to standard, and the performance of the manufactured blade materials is poor, which cannot be used.

Standing aside, Wu Hui sighed: "It is very difficult to manufacture the blades of the light turbine, especially the blades in the combustion zone. Heat-resistant alloy steel increases the difficulty of processing. If the processing is not accurate, the repetition rate of the blade shape will be very poor, resulting in a decrease in engine performance.

There are many small holes in the root of the blade, and the cooling air from the turbine shaft flows out of the blade through these small holes to take away the heat of the blade.

To ensure that each blade is exactly the same, and it is still a curved surface, it is really difficult to guarantee the processing.

If the holes are not straight, they simply cannot be machined with traditional machining methods.

Mr. Mu, now that your company has metal 3D additive technology, it will be much easier to manufacture engine blades.

If it was before, many manufacturers in our country wanted to process this blade, which was very difficult. Even if it was processed, the performance could not meet the design requirements. "

"Hehe, yes, this watch-level precision engine has many small cooling holes in the thumb-sized blade. I haven't dismantled the actual engine so far. My understanding of it is only theoretical. In fact, I don't know How are these small holes placed, and I don’t know how the air path goes.” Mu Yang said truthfully, without in-depth study of the blades of the engine, some things seem simple, but in fact they are unstoppable.

These blades have different lengths at each stage. The further forward, the thinner the shaft and the longer the blade; The thumb is as long, but the materials and manufacturing costs of these two levels are worth as much as gold in terms of weight.

The material contains rare metals such as nickel, chromium, titanium, and tungsten, and the proportion is relatively large. The price of these rare metals is not much expensive, mainly because of the high manufacturing cost. It is very difficult to burn it to 2,000 degrees Celsius with a welding torch, and then smash it with a hammer without deforming it.

We all know that materials will become soft at high temperatures. If it is more than 2,000 degrees Celsius, if it is steel, it will melt. Even general high-temperature resistant materials have poor high-temperature creep resistance.

"Academician Wu, the speed of the blade can reach 10,000 to 20,000 revolutions per minute, and the centrifugal force is very strong. Have you ever encountered a blade break?" Mu Yang was a little curious, what would happen if the blade breaks in this case.

Wu Hui is an expert in this area and has been developing aircraft for decades.

After Mu Yang finished speaking, Wu Hui said happily: "Of course I have, the leaves of the cold section and the hot section have broken.

The breakage of the blades in the cold section is also very harmful, and can break the entire engine; the breakage of the blades in the hot section can penetrate the wall of the engine barrel and then penetrate out of the aircraft casing, which is quite dangerous.

Turbine blades often break, and if maintenance personnel can find them on the ground, it will be a meritorious service;

There are usually signs of fracture, and the source of the fracture may only be a small crack, no matter how long or short, it is considered to be a failure, and the first person who can find it will definitely make a third-class merit.

In the past, there was no means of flaw detection, just relying on eyes to see, but no feeling by hand.

Nowadays, PT penetration testing is generally used, but you also know that it is impossible to remove the engine blades for inspection. The outer blades can still be tested with PT. The inner blades are inconvenient to detect and cannot be seen with the naked eye, unless the entire engine is overhauled. It is easy to check when disassembled. "

Mu Yang understands what Wu Hui said, PT is the most convenient detection method, the engine cannot be disassembled, spray cleaning agent directly on the blade, wipe it with a dry cloth, then spray red penetrating liquid, wait for fifteen minutes for the penetrating liquid to penetrate into the crack , and then dry it, and then spray the white developer. If a crack is found, it will appear red, because the white developer cannot cover the red penetrant that penetrates into the crack, and the efficiency is very fast, and it can be detected within tens of minutes.

PT is commonly used to detect cracks on shafts and surfacing STL6 surfaces.

Once a crack appears, regardless of its size or length, it will be scrapped, because the crack will extend, just like a piece of cloth, and a small gap will appear, which only needs to be torn apart with a little force.

Therefore, cracks are one of the most serious defects.

Wu Hui recalled what happened in the past few years, and said eloquently: "It turned out that there was a training army in the Air Force of the Southern Airport, and the turbine blade of a J-5 broke off during take-off and landing, and this section turned into a spiral shape. It was shot out of the nozzle from the channel between the afterburner and the outer cylinder wall.

The length of the broken blade is only a few centimeters, but the weight of the symmetrical blade is unbalanced. When the speed is very fast, the turbine can reach 11,000 revolutions in 5 minutes, and the imbalance is very obvious, so Immediately, the rotor turned wildly and eccentrically, scraped a deep hole in the outer ring of the engine, and the blades were all bent.

That plane was lucky and landed safely. If it was farther away from the airport, it would not have survived.

At that time, there were no ejection seats, and you had to jump at a height of more than 3,000 meters. Jumping at a height of several hundred meters was impossible to survive. "

From Academician Wu, Mu Yang learned a lot of interesting things about the planes in the past, which deepened his knowledge of plane engines.

"Academician Wu, have you ever considered that if the beautiful country imposes restrictions on us, we will no longer be able to buy leap-1c aero engines?"

After listening to Mu Yang's words, Wu Hui was silent for a long time before saying: "We have considered your concerns, it is very likely, but we just don't know when.

We also hope to gain manufacturing experience from the leap-1c aero engine, and at the same time hope that there will be fewer obstacles in the airworthiness certificates of various countries, which is actually just a transaction.

We have records for engines and other core components.

However, there is a long way to go, and it is difficult for domestic engines to meet the conditions. "

Mu Yang heard that what he was worried about had actually been thought of by the Guo family a long time ago. He just said that there are many things that he is very helpless and helpless.

Mu Yang didn't tell Wu Hui about Xinghai Group's entry into the research and development of aero-engines, and he could hide it for as long as he could.

He stayed at SAIC for two days, and returned to Tomson Yipin's house for a day on the 22nd.

Then visit and investigate the partners of Xinghai Group, and return to City H on August 25.

I haven't seen the two little guys at home for a few days, and Mu Yang really misses them.

It has been nearly two months since he was born, and his weight is already twelve catties. The doctor said that it is normal and the child is very healthy.

The hair is also longer, and the weather is hot, so it is better to cut it short.

Mu Yang was afraid that his workmanship would hurt the child, so he asked a babysitter who often cuts the child's hair to take care of it.

Of course, after finishing the treatment, Mu Yang found that the treatment was not very good.

However, it doesn't matter, as long as it doesn't hurt the child.

"You can't crawl now, right?" Mu Yang asked his wife curiously.

"Of course not. It's an exaggeration to turn over in two months. If it's fast, it will take six months to climb." Song Xuelu explained.

"Oh, I don't quite understand this, did you take a picture of them recently?"

"I took a lot of pictures, every day, and saved them in the computer. When they grow up, let them see what they were like when they were young."

"I don't want to take pictures with open crotch pants. If it is posted on the Internet one day, it will embarrass them both, haha."

"Husband, what are you thinking, I still pay attention to this image problem."

"Honey, do you have any photos of you opening your crotch pants when you were young, please show me." Mu Yang suddenly remembered this matter, so he didn't ask.

"No!"

Song Xuelu gave her husband a white look, even if she did, she couldn't say she had it, let alone let him see it.

Thinking of her husband's business trip to Shanghai Aircraft Company this time, she suddenly remembered the private jet she had mentioned to her some time ago, and asked, "Do you really want to buy a private jet?"

"I have entrusted Jiang Jun to help me purchase a second-hand Boeing BBJ3, which was used for half a year and then refurbished." Mu Yang said.

"BBJ3? What model? 747?"

"The 737-900 is a business jet transformed from the original model. The 747 is too expensive, costing 400 million U.S. dollars."

"Then how much did you spend on this? It's expensive, right?"

"I bought it from someone else, and it was bought at a premium. It cost 100 million US dollars, which is more expensive than the new machine. The wait for the new machine is too long, and it is difficult to deliver the new machine in less than two years. I have a long-distance business trip. Not much, just a few times a year. Apart from myself, it can also be used by employees, otherwise it will be a waste.” Mu Yang said, “Just get dozens of seats, and it’s OK to reserve a boss seat for me. .”

"It's still not safe to fly. Sit as little as you can." Every time Mu Yang took a plane, Song Xuelu felt a little uneasy.

"Well, if it's less than 1,000 kilometers, I'll take a car. Our Future 01 is safe, and it's okay to be hit by a gravel car."

"You still mention this matter, you scared me to death that time, and you are not allowed to mention this matter in the future."

Mu Yang felt very happy when he returned home. He was accompanied by his wife and two little guys. He didn't want to die young.

For the future arrangement of the two children, Mu Yang discussed with his wife. Before the children became adults, they lived happily. After they became adults, they still hoped that they would understand some business matters. Even if they don’t manage the company, they must at least understand this aspect Knowledge cannot be fooled.

After finally setting foot on his current upper class society, how could he allow his descendants to mess around.

He had to face it truthfully, even in a peaceful society, social classes still exist, and everyone wants to climb up.

Not to mention other things, just say that in his own company, there is still internal fighting, the purpose is to climb up, even if Mu Yang has repeatedly emphasized team spirit, it cannot be avoided.

On the night of August 28th, when Mu Yang was about to rest, he received a message from the reading system.

Come to achievement point.

[System prompt 1: Personal wealth reaches one trillion yuan, and achievement points +500 will be obtained]

[System prompt 2: Personal wealth has reached a new height, become the richest man in the world, and get achievement points +300]

Seeing these two messages, Mu Yang felt ecstatic, hugged Song Xuelu next to her, and kissed her a few times.

"What are you doing!"

"It's okay, I just want to kiss my wife suddenly, haha."

"I've become a father now, and I'm not serious at all." Song Xuelu scolded and continued to fall asleep.

Mu Yang no longer cares about his wife, his achievement points have accumulated to 2484.5 points, breaking through 2,000 points.

However, his achievement in wealth has reached its peak, and it is no longer possible to gain achievement points from wealth.

With so many achievement points, Mu Yang didn't dare to waste them. He was waiting for the reading system to be upgraded to level 7.

The next day, Mu Yang came to the company.

Feng Younan, Chief Engineer of Nanche Company, which produces trains, and Luo Ming, Deputy General Manager of Purchasing, brought the team to Xinghai Group. Mu Yang and the two were acquaintances, so they received them.

"Mr. Mu, the location of your office building is really perfect. Facing the West Lake, you can see the scenery of the whole city H. Back then, many people laughed at Xinghai Group for building skyscrapers in industrial parks and wasting money. Now, Standing here, I feel that you have spent your money correctly." Luo Ming stood in front of the large glass window, admiring the scenery in the distance.

"Mr. Luo, stop boasting. They are right. Building the Xinghai Building in the industrial park is a waste of money and has no industrial effect. When people stand in the distance and point at our Xinghai Building, they will probably say , I don’t know which idiot suggested building skyscrapers in industrial parks.” Mu Yang said leisurely, “However, now that City H has a height limit, it’s impossible to build again. Fool."

"Haha, Mr. Mu really knows how to joke. You have a unique eye. If others could see it, you would already be the richest man in the world."

After the courtesies were over, the two parties began to discuss Feng Younan's purpose of coming to Xinghai Group this time: high-end bearings.

Xinghai Group has developed high-end bearings, one is the bearings used in automobiles, and it also manufactures bearings used in high-speed rail passenger cars.

For a long time, the transmission parts of my country's high-speed rail have basically relied on foreign technology, such as Ruidian SKF, Deguo FAG, and NTN of Daguo.

Huaguo is an undoubted super bearing country. This year, domestic bearing production may reach 19 billion sets, ranking third in the world. The smallest bearing diameter produced is 0.6 mm, and the largest diameter is 11 meters.

That is to say, but high-end bearings still rely on imports, and the import price has to be ten times the cost price.

There are too many types of bearings and the breadth of coverage is complex.

Xinghai Group has produced top-grade steel with an oxygen content below 3PPM. The two most basic and difficult processes of high-end bearing manufacturing, namely raw materials and processing technology, have been solved and applied to the latest Hummer EV and future models. Use high-end bearings.

High-end bearings for high-speed rail can be said to be one of the nine key components of high-speed rail. Feng Younan brought his team here to visit Xinghai Group's high-end bearing manufacturing.

In the early stage, the business department of Xinghai Group had sent some samples to Nanche Company. After their internal tests, they concluded that they were better than imported ones.

Without Mu Yang's relationship, it would be very difficult to get the product into Nanche Company. No matter how good the product is, people may not necessarily adopt it.

For Mu Yang, bearings are a small business, so there is no need to talk about them in person, but he has a good relationship with Feng Younan, so he accompanied Feng Younan to the bearing steel raw material production workshop and the bearing production workshop, and asked the technical manager to introduce the situation to the guests.

After visiting the bearing production, Feng Younan praised: "I went to Luoyang Bearing Group to visit their production workshop. Compared with yours, the production equipment is more than two grades worse, and the process is very strict. No wonder your bearings are so good."

"Haha, there's no way, we can't buy imported production lines, so we can only develop our own." Mu Yang said with a smile.

"I don't think you can't buy it. It's because you disdain to use other people's production lines. FAG's production lines are not as advanced as yours."

"Well, I agree with this point." Now, Mu Yang admitted without humility.

Who is the best bearing in the world, Huaguo Jiangnan is looking for Xinghai!

Mu Yang will not interfere with the business negotiations.

Bearings for high-speed railways involve safety issues. Even if the two parties have initially negotiated cooperation, there are still many processes to go. For example, the bearings of Xinghai Group have to undergo more stringent tests.

If Xinghai Group's bearings are finally selected, Nanche Group will really abandon imported bearings. For importers such as Deguo FAG, it is indeed bad news.