When Li Yifan was in Japan, through his relationship with Yu Nobuda, he really got a lot of special steel smelting techniques from him.

All of them are currently internationally mainstream powder metallurgy, or coating and other technologies.

When he entered the steel industry, he did not consider the steel business at the beginning, and mainly obtained some special steel materials for construction from Annie Lee in Singapore.

These technologies are not suitable for high-speed rail use, and the demand for special steel in high-speed rail is actually mainly concentrated on steel wheels, bearings, and high-strength springs.

To be honest, he does not have these techniques yet, but this does not prevent him from bragging with Minister Wang.

In his previous life, he entered the special service department. Later, for a year or two, he had to be responsible for foreign technical information, especially the most short-term special metal smelting industry in China. He had probably missed some information.

He knew that many companies in Japan were very good at developing bearing steel, steel wheels, or high-strength springs, but these companies were not big companies like New Nippon Steel in Japan.

Because these technologies are a bit too low-end for companies of the New Nippon Railway level, they are disdainful to develop these technologies.

However, these technologies are precisely the specialties of Japan's small and medium-sized steel companies, such as Japan's Yamao, Japan's Datong Chito, Japan's Aichi, or Sumitomo Okura.

These steel companies may not be particularly famous internationally, but they all have their own unique features in bearing steel, gear steel, or high-strength spring steel, structural steel and combined steel.

Moreover, such steel companies are not as confidential as New Nippon Steel's technology monitoring, so when they steal the technology of these steel companies in Japan, it was not very technically difficult for Li Yifan.

He still remembers that he was in Japan at that time. It took him almost three months to dig all the technologies of these small and medium-sized steel companies, bribery technicians, cut into technical drawings, and other methods, which was very easy.

I got a lot of information back at that time and gave it to domestic military experts. After analyzing this, I found that the high-quality bearing steel and gear steel produced by the Japanese were not much more advanced than ours in terms of materials.

Unlike the mysterious technology of powder metallurgy technology, powder metallurgy has high requirements for materials. For example, when adding a certain trace element, the requirements for time and heat are very strict and very high.

The secret of the Japanese incorporating this kind of bearing steel, gear steel, and high-strength spring steel lies in their smelting technology.

For example, the first step in smelting is to use a large electric furnace and then a converter process, which can reduce the residual elements in crude steel. However, when steelmaking in China, large electric furnaces were also used. However, at that time, there was no steel company in China that would adopt a converter process later. In this way, the crude steel we made was not as good as others, and the quality of scrap steel was not a little worse than others, and the quality was not as good as others, and the final one was not even as good as others.

It has been lagging behind since the first part, and in the second part, people will also use the technology of spraying feces and dephosphorization, desulfurization, and vacuum slag removal of converter steel. However, the domestic circuits use the technology of steel production under the eccentricity, and the research on converter vacuum slag removal technology is even more blank...

The third part is RH vacuum degassing technology, while the old VD deoxidation technology is still used in China.

Part 4: People generally use electromagnetic stirring technology, and we are still using crystallizer electromagnetic stirring. Part 5: In the final rolling stage, people use large-diameter rolling technology, continuous forging, and liquid pressure under light pressure environments, and only domestically can only laugh...

One step is different, and one step is different at the end, which leads to the fact that the special steel we produce is less than the special steels of other people. In terms of strength and service life, it is not as simple as a little bit worse than the special steels of others.

In simple terms, if the ductile iron smelted like this is used as a wheel or bearing of a high-speed rail, it can work continuously in a high-temperature, high-pressure, and high-strength environment for tens of thousands of hours.

The wheels or bearing steel made of our ductile iron will appear cracks in the same environment after working for hundreds of hours. If it takes thousands of hours, it is estimated that all those who take the bus will probably go back to see God.

This is the gap. At the beginning, we were not in terms of technology, but later on, we were not in terms of technology.

After this smelting process, in fact, in the final rolling stage, some technical content is required. The previous ones can be completed through technical transformation of smelting equipment and technical transformation of production process.

However, many domestic steel companies are considering cost and have never thought about renovating them.

Indeed, when the steel bars, steel plates, or rough steel billets produced by your steel mill will be bought as soon as they appear. Anyway, when you use them to build high-rise buildings, the profit will be quite considerable.

Who would still think about improving the process technology and smelting some special steel?

This is thankless, and it is very likely that the officials of state-owned enterprises in China will not go back to do it if they have planted trees themselves and enjoyed the cooldowns for future generations. They would rather spend money on improving technology to eat, drink and have fun than do things for future generations to enjoy the cooldowns.

For example, I am the boss of a state-owned steel company. I have a political level. My task is to make the company's accounting statements look better during my term and reflect my abilities more, and then wait for promotion.

Transformation technology, transformation process, and production of special steel are beneficial to the country, but it costs a lot, has a long cycle, and there is also the risk of failure.

Even if it succeeds, it may not be completed within my term. Maybe it was completed when I just stepped down and my successor came to power, so that my achievements will be counted on my successor?

Then who would be willing to do such a thing?

So when we don’t know the truth, we often feel that the difference between us and Germany is not a small part. However, after we have learned in detail about the difference between us and them, we will find that it turns out that everyone is just a layer of window paper, but no one is willing to break this thin layer of window paper...

If large state-owned factories don’t work, small private factories won’t work. After all, they don’t have the financial resources...

Thinking about these pasts now, Li Yifan will feel real heartache, and in this life, all he has to do is this person who breaks the window paper.

Although Minister Wang and Director Shen are considered people who use special steel for high-speed rail, they are not as detailed as Li Yifan knows.

In fact, these materials were only known when Li Yifan went to Japan to plagiarize information in his previous life, but he remembered them very deeply because of some emotion.

Although he didn't have these techniques, it was not difficult to get them from Japan. His steel factory is still in its inception, but it did not prevent him from making a big fuss in front of Minister Wang and Director Shen.

After this blow, he immediately became elevated to the status of special steel smelting experts in the eyes of Minister Wang and Director Shen.

As expected, they are worthy of being a top student at the University of Beijing. This can be said very well. In the past, they knew that the special steel of the Japanese was better than the special steel in China, and was suitable for making wheels, bearings, etc. of high-speed rail.

But what is better than the special steel in our country, why is it better than the special steel in our country, and how much it will cost and how long it will take to produce it in our country, and I don’t know how much it will cost in our country and how long it will take to use it.

But now, after hearing what Li Yifan said, feelings are just such a simple thing. As long as we improve the process, we can produce wheel steel and bearing steel like the Japanese?

Now Minister Wang and Director Shen were even happier. After all, if they could handle these things, they would lose a place to be restricted by those foreigners when negotiating with foreigners in the future.

Moreover, using domestic products will be much lower than importing from abroad. At that time, this can be regarded as one of their absolute achievements!

"Xiao Li, after hearing what you said, I can't wait to go and see your factory. How about it? When can you take out the samples and show us?"

Minister Wang made the decision on the spot. He was a decisive person and didn't like to drag things on the ground.

Of course, Li Yifan should play Tai Chi appropriately.

"Uncle Wang, you also know that we just entered this field. At the beginning, we were aiming at special steel for construction. The main direction was corrosion-proof and rust-resistant high-strength steel. We had never thought about doing business in the railway department. So although we have reserves for the technical aspects of bearing steel and wheel steel, we did not plan to take it out so early. If we want to produce it, the production line needs to be adjusted and the process process also needs to be adjusted, which may take some time."

When he lied, his face did not blush and his heart did not beat. Even old fry like Minister Wang was fooled by him. Even Yang Yuhe could not help but look at him with admiration.
Chapter completed!