Rebirth of Business Domination of the Two Worlds

Chapter 164 The Carbon Content of Steel

The local method of steelmaking in the Huaxia Leap Forward era was a small blast furnace made of clay and bricks. Due to the different standards of carbon addition, the air bubbles in the steel were too large and the structural strength was low.

This situation is like a reinforced concrete concrete column. If the sand is uneven in size and mixed with soil, the cement will be unevenly distributed. If there are air bubbles, the strength of the rigid column must be very low.

Moreover, the temperature of the steel cannot meet the requirements, and the removal of impurities cannot keep up, and the steel produced must not meet the standard.

However, no matter how poor the local method of steelmaking technology in the Huaxia Leap Forward era was, it was much better than the other world's method of frying steel, that is, wrought iron technology.

The carbon content determines the mechanical properties of steel. The higher the carbon content, the greater the hardness and strength, but the plasticity and toughness decrease.

Take homemade noodles as an example. Flour is like iron, and salt is like carbon. Adding a small amount can make the flour gluten. As the saying goes, "salt" is the soul of noodles, but too much salt may make the noodles less gluten.

Eggs have protein, which is like alloying elements in steel. Adding eggs to flour can make noodles elastic, and suitable alloying elements such as chromium and manganese can strengthen steel.

Pig iron with a carbon content of more than 2% is too hard and brittle; wrought iron with a carbon content of less than 0.02% is too soft but has excellent plasticity.

Steel with a carbon content of about 0.1% is ordinary structural steel, which has a relatively balanced strength and plasticity. The carbon content of steel bars for construction is about this range.

If pig iron is used for building reinforcement, high-rise buildings will definitely collapse easily, and some vibrations will crack; if wrought iron is used for building reinforced concrete slabs, the steel will not be strong enough, and the middle of the floor will definitely be dented and soft.

"Young master, is it good for the carbon content to be around 0.1%? Will we control the steelmaking within this range in the future?" Li Gang was a little puzzled.

Mo Mo smiled and said, "Of course not. Steels with different carbon content have different properties and uses."

Mo Mo spoke eloquently and gave many examples.

Just like the base of a machine tool, it does not require plasticity, but requires high carbon content, and high carbon content means high hardness, so it has better wear resistance and shock resistance.Another example is knives, the carbon content is too low, the hardness cannot reach, and the bone will be blunt.

Mo Mo added: "We make steel. Due to various restrictions, we can only smelt a few types of steel first, such as knives and ordinary steel for construction. Others are not considered for the time being."

"Young master, you know so much at such a young age. After I have been corrected by you again, I feel that I am enlightened and understand a lot." Li Gang smiled, and his admiration was beyond words, and his admiration was hard to express.

Fang Shi said: "Yes, after the young master said, even a layman like me has a deep understanding of the carbon content of steel. I didn't expect iron making to be so profound."

"We only know the surface of it, just a little bit of superficial knowledge." Mo Mo laughed. Steelmaking is too complicated, and he hasn't gone deep into the macroscopic aspect. He suddenly stopped and said to Fang Shi, "It's not just steelmaking, it's the same in any industry." Yes, the more I study deeply, the more I feel that I only know a little bit."

"Young master taught me a lesson, thank you for your teaching." Fang Shi said with emotion from the bottom of his heart, and Li Gang seemed to say yes.

Mo Mo waved his hand and said, "You're welcome. When I'm talking, sometimes I can clear my mind better, and I may find some problems."

"As the leaders of various departments, you are also the guides of various industries. In your work, you must pass on your knowledge to the subordinates without reservation. Don't treat it like a family heirloom. I am afraid that the apprentice will learn to starve to death. In my case, there is no such thing. For such a problem, when I am free, there will be some incentives for the master."

"Also, the information I gave may not be correct. You must dare to ask questions, dare to practice, and don't be afraid to spend money. Many new technologies are created with money, not discussion."

Mo Mo is like a teacher, while the two middle-aged men in their 50s and [-]s are like two elementary school students, listening to the teachings respectfully.

Li Gang asked curiously: "Master, what level of steelmaking can our steelmaking probably reach your family's? How big is the gap?"

Mo Mo sighed and said: "Luoyun country doesn't pay attention to science and technology, I don't know much about other countries.

There are too many industries related to steelmaking. If the related industries fail to develop, it will be extremely difficult to improve the level of steelmaking. It will not reach the level of my family in 1 years.

If it develops normally, there may be a difference of hundreds of years.Sometimes, development depends on the opportunity. "

The level of steelmaking in the other world is similar to that of China's Ming Dynasty, and the best is the hundred steelmaking.

Bailian steel uses iron sheets with high carbon content as the blade surface, and iron sheets with extremely low carbon content as the blade body to ensure toughness.Heat it to about a thousand degrees, and then fold and forge it constantly to help the carbon diffuse.

Bailian Steel is suitable for making knives, but not for other mechanical manufacturing.

If it is to make steel bars for steel structures and ordinary structural steel for welding, then the other world cannot make them.

The human history of Tianling Continent has been more than 3000 years, but the level of steelmaking is still at the level of ironmaking, which is hundreds of years behind that of Earth.

Although the technological development of mankind is progressing, if the related industries cannot develop, the development of steelmaking technology will also encounter bottlenecks. For example, if there is no electricity, the steelmaking electric furnace cannot be used, and it is difficult to build a blast furnace with a heat resistance of thousands of degrees without clay bricks. , there is no way to automatically control without electronics, and it is impossible to check the quality of materials normally.

Civilization, especially the development of science and technology is a progressive process, and the accumulation of foundations requires a stable environment.

If a person lives a turbulent life full of precarity, ups and downs, and life hanging by a thread, it is simply impossible to achieve great discoveries.

There are too many countries in the Tianling Continent, wars continue, and there are monsters that are difficult to contend with, which may invade human beings at any time, so it is extremely difficult for human beings to unify, let alone the vastness of the Tianling Continent.

In addition, the human beings in the Tianling Continent are more advocating force and have taken the direction of force, so that the development of science has fallen behind.

"Oh, that's it." Li Gang understood a lot after listening to Mo Mo's explanation.

At the same time, Li Gang and Fang Shi feel that the young master's family is even more mysterious, and it seems to be an existence that is incomparably more powerful than the royal family of Luoyun Kingdom.

Mo Mo looked at the time, and it took an hour just to talk about steelmaking, but he forgot to talk about the business, and changed the subject and said: "Okay, I didn't call you here today to talk about steelmaking, that is far away from us, we have to follow the steps To do things, first solve the refractory bricks.

Of course, it is also beneficial to understand that refractory bricks are used to build blast furnaces for ironmaking. "

Mo Mo wants to use a blast furnace to make iron. This is because the blast furnace can guarantee the iron-making temperature. Otherwise, the furnace temperature of a general furnace is only 1300 degrees Celsius, and it cannot really reach the 1550 degrees Celsius that melts steel. The iron produced is a spongy solid block , known as "block ironmaking".

The level of ironmaking in another world is the level of ironmaking in a block.

To make a blast furnace, you must first have refractory bricks, otherwise ordinary materials cannot withstand the melting temperature of steel, which is 1550 degrees Celsius, or even slightly exceed it.

(End of this chapter)