Rebirth 99 to become a car giant.

Chapter 744: One of the most difficult materials to weld in history: Yinwa Steel, got stuck

"People from Wenchong Shipyard are coming to visit me?"

Cao Yang looked at Mi Ying in surprise.

"Yes, they want to talk to you about a kind of special steel. It seems to be called Yinwa steel. I will sort out the specific information and report to you later."

Mi Ying quickly explained the situation to Cao Yang briefly.

Otherwise, if Cao Yang didn't want to attend this meeting, she would have to re-coordinate as soon as possible.

Generally speaking, when people from large factories in the Yangcheng area wanted to visit Cao Yang, he met with them.

Based on this situation, Mi Yingcai directly arranged the visit to Wenchong Shipyard into Cao Yang's schedule.

Most Chinese people don’t know the name of Wenchong Shipyard.

After all, compared to several other shipyards, its reputation is too low.

But its strength is actually not bad at all.

Combining the information just reported by Mi Ying and what Xie Lingyun explained, Cao Yang probably had some impressions.

"The most important production capacity is still in Korea. Wenchong Shipyard has a good vision. If they can really make a breakthrough in LNG ships and reduce costs, they will have unlimited future."

During this period of time, I had been worrying about special steel, and Cao Yang really became interested.

"Before talking about the production of Yinwa Steel, we must first understand the basic situation of Yinwa Steel."

No company in China can produce it.

He even specially arranged a group to do relevant forward-looking pre-research.

"Mr. Cao, only the French in the world have produced qualified Yinwa steel. Not even the United States, Polar Bear, and Japan can produce it."

"The stability of this alloy makes it have many uses. For example, it can be used to make the pendulum of a clock, because the length of the pendulum does not change with changes in temperature, thus ensuring the accuracy of the clock. .”

There are dozens of similar forward-looking pre-research groups in Nanshan Special Steel.

Cao Yang was interested in understanding, and Xie Lingyun was naturally very active in explaining it.

After understanding these situations, Cao Yang would naturally not refuse to meet.

It happened that during this period, Nanshan Special Steel acquired Shaogang and immediately made a huge breakthrough in pen tip steel. The Wenchong Shipyard had more expectations for Nanshan Special Steel.

Most of the time, he is like a firefighter, putting out the fire wherever it breaks out.

"From this result, we can feel the difficulty of Yinwa Steel's production."

Although Cao Yang was not familiar with Yin Wagang's situation, Xie Lingyun was different.

However, during this period, Wenchong Shipyard wanted to further break through itself and become the leading shipyard in China.

That's why Xie Lingyun can be so generous in setting up various materials research groups.

"This is contrary to the general laws of physics, because most objects, including metals, are affected by thermal expansion and contraction, that is, the volume expands when the temperature increases and shrinks when the temperature decreases."

"It can also be used to make measuring instruments because the scale of the instrument will not cause errors due to changes in temperature, thus ensuring the accuracy of measurements."

Otherwise, all the hard work would be spent working for the French GTT.

"The discovery of Invar steel can be traced back to 1896, when French physicist CE Guialme was studying a nickel-iron alloy and accidentally discovered the peculiar properties of this alloy."

But there are too many things that he needs to worry about, and it is really impossible to understand all types of special steel.

Founded in 1955, it is one of the large-scale key enterprises under CSSC.

Speaking of this, Xie Lingyun paused deliberately, "The most important use of Yinwa Steel is in the manufacturing of LNG carriers."

Before today, I really didn't know that there was such a thing as Yinwa Steel, and I was actually stuck.

That is to say, Nanshan Special Steel's profits are huge enough, and Cao Yang attaches great importance to independent research and development in each business unit.

"This is what Mi Ying just said. Only a company in France can produce this kind of Invar steel. If Wenchong Shipyard wants to produce competitive LNG ships, it hopes to purchase Invar steel from China?"

However, one of the biggest difficulties in producing LNG ships is that they cannot handle the most critical Yinwa Steel.

"Academician Xie, is this Yinwa Steel difficult?"

Although Cao Yang has an in-depth understanding of special steels such as aircraft carrier steel plates and bearing steel plates.

Originally, they were thinking about whether they could cooperate with Baosteel, but after some communication, there was no good result.

"This means that the demand for LNG ships will continue to increase, and currently the United States, Korea and China are the main countries in the world that can produce such ships."

"The composition of this alloy is 36% nickel, 63.8% iron, and 0.2% carbon. It will hardly change its volume due to temperature changes in the temperature range below 230C. In other words, its thermal expansion coefficient is very Low, even close to zero.”

"Yes, Hudong Shipyard is currently the only shipyard in China that can produce LNG ships. As an environmentally friendly and clean energy source, LNG has a promising future."

As a result, if Wenchong Shipyard wants to make a breakthrough in LNG, it must find a way to get Yinwa Steel.

The company's management team made an inspection tour and set their sights on LNG ships.

Xie Lingyun explained further.

How could any other steel mill try in so many fields at once?

"What kind of difficulty?"

"but……"

Only France's GTT produces this kind of steel in the world, and has mastered a series of related patents for storage tanks.

It is the main construction base for China's feeder container ships and large and medium-sized dredgers.

The shipbuilding industry is a bit far away from ordinary people, and everyone doesn't feel anything special about it.

But in the minds of shipbuilders, there are three "jewels" in the crown of the world's shipbuilding industry today: one is the cruise ship "Maria" which is more luxurious than the "Titanic", the other is an aircraft carrier, and the last one is a large LNG transport ship.

One can imagine what the prospects (money prospects) of LNG are.

"Everyone is optimistic about the prospects of LNG ships. With so many steel mills in the country, there must be some who want to break through to Invar Steel, right?"

Cao Yang followed normal logic and raised his own questions.

As long as China cannot produce something, the import price will definitely be expensive.

There is only one company in France that can produce it in the world, and the price is even more expensive.

He didn't believe that domestic steel mills would not be jealous of such high profits.

You must know that the steel materials that need to be used in the shipbuilding industry are often relatively large.

This is different from the situation with nose tip steel.

"Yinwa Steel requires a very high level of technology and advanced production equipment to realize. In addition to the general steel manufacturing process, such as smelting, rolling, annealing, etc., the production process also has to overcome the characteristics of Yinwa Steel itself. the difficulties it brings.”