King of Industry

Since it was the name given by Jia, the leader of the Ministry of Railways, he thought about it for a while, and decided to talk about the technological progress of railway rails in the world.

After thinking about it and organizing his words, Zhao Guoyang recounted in a calm tone: As we all know, rails are divided into railway rails, light rails, conductive rails, and crane rails according to China's national standards and the standards of the Ministry of Metallurgical Industry. .”

Correspondingly, each country in the world also has its own standards for the production of steel rails, and their classification methods are also different.

For example, the BS series of the English standard, the DIN series of crane rails of the Germanic standard, and the UIC series of the International Union of Railways...

The classification of steel rails that Zhao Guoyang is talking about at the moment is basically understood by the bosses of the iron and steel companies present, and they all nodded in agreement after listening to it.

Although there are many types, no matter which country or which organization's rail classification standards are based on roughly the same basis, it is expressed in kilograms per meter of rail mass. And this data, and the cross-sectional shape of the rail , has a lot to do with...

When Zhao Guoyang said this, Lin Yuan, chief engineer of the Ministry of Metallurgical Industry, who sat next to Li Kejian on the rostrum, secretly praised him.

He turned his head to look at Li Kejian, smiled and whispered: Old Li, this researcher Zhao's accomplishments in rail technology look really good, he is a talent!

Li Kejian glanced at Lin Yuan sideways, and said with a smile: Lin Yuan, you, the chief engineer, have already said that you are a talent, so he must be, but if you want me to say, your evaluation is a bit underestimating him It's...

Lin Yuan didn't quite understand what Li Kejian meant, and looked blankly at Zhao Guoyang below, thinking to himself: No way, does this young man really have any extraordinary abilities?

In the audience, Zhao Guoyang's narration continued.

The section shape of the rail adopts the I-shaped section with the best bending resistance, which consists of three parts: the rail head, the rail waist and the rail bottom.

In order to make the rail better withstand forces from all sides and ensure the necessary strength conditions, the rail should have sufficient height, its head and bottom should have sufficient area and height, and the waist and bottom should not be too thin.

At present, most of the rails used in our domestic railways are 38, 43, and 50kg/m carbon steel rails. Although this kind of rail is cheap and not difficult to produce, its strength, wear resistance, and pressure resistance , brittle fracture resistance and fatigue fracture resistance are all unsatisfactory, and rail damage is prone to occur!

Aiming at this problem, my research institute is rushing to develop a new type of high-carbon low-alloy steel rail, hoping to make up for the problem of the rail being easily damaged...

After hearing Zhao Guoyang's narration, a voice from the audience questioned in a low voice: This researcher Zhao's words are too far-fetched, isn't it? Isn't it normal for rails to be damaged? What does this have to do with the type of steel? ?”

Yeah, I don't know this point! During the use of the rail, due to the large amount of load, it is normal for a long time to break, crack and other damages that affect and limit the performance of the rail. thing!

As long as our railway department strictly inspects and replaces them in time, basically there will be no major problems!

Naturally, the discussions in the audience could not escape Zhao Guoyang's ears.

He smiled lightly, and said confidently: Maybe everyone will have some doubts, and feel that the damage of the rail is an unavoidable event in actual operation. There are many reasons!

But I can pat my chest and assure everyone that this is absolutely not the case!

After a slight pause, Zhao Guoyang continued to speak with a vow: In fact, in the past year, our 'Shipbuilding-Special Materials' research office under Xingtai International Foreign Trade Company has conducted research on 32 cases in the world. A detailed investigation and analysis has been made on the rail damage incident.

We divide the damage into nine categories and 32 kinds of damage based on the location of the damage on the rail section, the appearance of the damage, and the cause of the damage. They are classified with two-digit numbers. The tens digit indicates the location and state of the damage, and the one digit The number indicated the cause of the damage. Finally, the following conclusions were drawn...

First of all, the most common rail wear, the conclusion of our research institute is that this kind of wear can be completely solved by adjusting the geometric dimensions of the track. Through calculations, we have obtained some conclusive data, that is, if we use the high-carbon low-alloy I said Steel rails can reduce this wear and tear by at least 90%...

After hearing the data that Zhao Guoyang said, the entrepreneurs and executives in the audience all exclaimed Wow.

You must know that the wear and tear of railway rails is very high. Every year, these steel manufacturing companies spend a huge amount of money on the maintenance of the rails they sell.

If there is a new material that can reduce the wear of rails by 90%, even if its price is three times more expensive, it is definitely a bargain.

Unlike the entrepreneurs in the audience, the bigwigs on the rostrum had calmer expressions.

Chen Xianshang turned his head, smiled and whispered to Leader Jia beside him, Old Jia, this Zhao Guoyang is the outstanding young technical backbone you have been mentioning to me before, right?

Hearing his tone, could it be that the research institute under him has really successfully developed this high-carbon low-alloy steel rail?

Hearing this, Jia Zhichun blinked at Chen Xianshang in an inscrutable way and said, Hey, old Chen, please forgive me for putting this matter on hold. I'll come back with you in detail after this little researcher Zhao finishes his speech. !

Being teased by Jia Zhichun, Chen Xianshang was speechless.

However, he knew Jia Zhichun very well, and he also knew that the other party would definitely not be aimless.

It seems that this Zhao Guoyang, himself and the Ministry of Metallurgical Industry really need to pay close attention.

Under the stage, Zhao Guoyang's narration was still going on. He opened his fingers and explained in detail: The second damage is the side wear.

Most of this wear occurs on the outer strand rails with small radius curves, and it is one of the main types of damage on curves now.

Everyone knows that when a train runs on a curve, the friction and sliding of the wheel and rail is the root cause of the side wear of the outer rail.

When a train passes through a curve with a small radius, two points of wheel-rail contact usually occur. At this time, the maximum side wear occurs. The size of the side wear can be expressed by the product of the guide force and the impact angle, that is, the wear factor.

Improving the conditions of the train passing through the curve, such as the use of abrasive wheel treads, the use of radial bogies, etc. will reduce the rate of side wear.

Speaking of this, Zhao Guoyang paused for a moment before continuing to speak: In addition, from the perspective of engineering work, improving the rail material and using wear-resistant steel rails, such as high-carbon low-alloy steel rails, can also solve part of the problem. Because this high The wear resistance of carbon and low alloy steel rails is about 2 times that of ordinary rails, and that of hardened rails is more than 1 times!

With Zhao Guoyang's eloquent talk, everyone seems to have forgotten his age. Everyone in the entire conference room was immersed in it, and the conference room was extremely quiet.

Zhao Guoyang raised his hand and said: The last kind of damage is wavy wear. It refers to the wavy uneven wear on the top surface of the rail, which is essentially wavy crush.

On the rostrum, upon hearing this, Lin Yuan's eyes became extremely serious.

Glancing at Li Kejian, who was in meditation like an old monk, he couldn't help asking: Mr. Li, who is this researcher Zhao? His explanation of the steel rails is up to the standard in The Frontier of Industry. The article has been published!

I haven't heard of such a character before, it's really strange...

After hearing Lin Yuan's sigh, Li Kejian happily explained: Lin Yuan, you are really right about this matter. In fact, Guoyang has published several articles in The Frontier of Industry before.

If it weren't for his busy work, I would have asked him to help me edit the journal!

What? After hearing Li Kejian's calm words, Lin Yuan almost didn't jump up.

The weight of the journal Industrial Forefront can be said to be unique in the domestic industrial system.

Those who can publish articles on this are all technical masters in the domestic industrial system.

Originally, Lin Yuan was surprised when he heard that Zhao Guoyang had published one or two articles on it.

But now, listening to Mr. Li's meaning, the level of this little guy's feelings is far more than that!

People who can be favored by Mr. Li and have the ability to edit such heavyweight industrial journals, I am afraid that there are not many three or five people in the whole country, right?

After thinking about this, when Lin Yuan looked at Zhao Guoyang in the audience, his face became more cautious.

Corrugation will cause high wheel-rail dynamics, accelerate the damage of rolling stock and track components, and increase maintenance and repair costs; in addition, the severe vibration of the train will make passengers uncomfortable, and even threaten driving safety in severe cases; corrugation is also source of noise.

Zhao Guoyang's narration has gradually come to an end, and he said with some sadness: A few years ago, some of our domestic freight routes had serious corrugation. Once or twice, it caused serious accidents, which made people sad ah!

In many cases, the development speed of wavy wear is faster than that of side grinding, which has become the main reason for changing rails. It can be seen that to solve the problem of wavy wear, in addition to grinding the rails, it is also imperative to improve the material of the rails OK!

As for high-carbon low-alloy steel rails, because they are hardened steel rails, the mechanical properties of the steel are more prominent, which is enough to calmly deal with this problem!

Zhao Guoyang said in the last word: In summary, it is almost imperative for us to explore high-carbon and low-alloy steel rails in China. Finally, I want to tell you that this is by no means my research institute Thanks to the credit, the appeals made are really faced from the perspective of solving problems.

Looking around, Zhao Guoyang bowed lightly to everyone and said, That's all I have to say, thank you all!

After listening to Zhao Guoyang's sincere explanation, the entire meeting room burst into thunderous applause.