My Super Black Technology Empire

Chapter 147 Liquid nitrogen cooling steps

In the next hour or so, various steps such as cold and heat treatment began, and Ye Fan was also instructing in an orderly manner.

Until the last cold treatment process was completed, the pot of molten steel was still dark red, and the temperature was very high.

"Just wait until the cooling is completely completed, and then we can know whether the forging is successful after testing." Ye Fan was also thinking secretly at this time.

"Let's start the cooling process now." Ye Fan said to Lin Wei after estimating that the time was almost up.

"Ah? Boss, this... this is out of specification? How can it be cooled directly in the crucible? If it solidifies, it will be a big iron ingot!

This thing weighs more than ten tons, and handling will be a problem at that time, and it has to be cut into pieces before it can be rebuilt. "Lin Wei was stunned.

To tell the truth, it was the first time someone made such a bizarre request after he had eaten this bowl of rice in the heavy industry for so many years.

But it was his boss who made this request.

"Don't worry, as I said, you guys, start the cooling process, put liquid nitrogen directly, and you'll get a bonus when you're done." Ye Fan commanded a few workers and said.

"Okay boss!" The boss who was the biggest among the workers spoke up. How dare he not listen. He immediately walked out of the second division and began to direct a few forklifts and brought in a few barrels of liquid nitrogen.

And the master in charge of operating the machinery here did not stop, but carefully controlled the machinery that controlled the crucible, and stopped the large crucible firmly on the ground.

At the same time, a terrifying temperature began to spread on the ground.

If it is calculated according to the normal operating rules, this is an illegal operation. If it is seen by the people in the administration, I am afraid that it will be punished severely.

At this time, Ye Fan, who was in the operation platform on the second floor of the factory building, could also clearly feel that the temperature of the surrounding air had risen a little.

Because the heat is radiated upward, and their second floor is like a barbecue grill.

If the normal operating rules are followed, the molten steel in this large crucible should be immediately poured into the corresponding module to cool it into steel, and finally processed out of the factory.

At this time, there are already several masters, wearing thermal insulation clothing to isolate the heat, wearing oxygen cylinders, to resist the harmful gas emitted by the high temperature of the steel.

After all, when many steel mills have accidents,

All the molten steel in the large crucible at the top fell to the ground. At this time, the air temperature was almost 1,000 degrees.

Many people who have no time to escape are often not scalded to death by molten steel, but because the high-temperature air is breathed into the lungs and the respiratory tract burns to death.

Lin's heavy industry has also done this exercise before, so there are oxygen cylinders and everything, and liquid nitrogen is completely for accelerated cooling, or it is specially used for rescue in extreme situations.

Therefore, Ye Fan's request today can be found on-site in the factory, instead of buying it outside.

Several masters respectively operated five forklifts and began to pour liquid nitrogen around the large crucible to reduce the heat around it.

When the five large liquid nitrogen barrels began to pour out liquid nitrogen, the ground of the entire factory was filled with smoke, as if it was a fairyland on earth.

In the smoky center, the pot of molten steel with a dark red glow still showed no sign of cooling.

Why not pour liquid nitrogen directly into the crucible and seek faster cooling, but slowly cool down on the ground around the crucible, and then start to cool down on the surface of the crucible, never taking care of the molten steel inside?

Because anyone who has learned common sense in physics knows that molten steel is the liquefaction of steel at a high temperature of several thousand degrees, and the temperature of liquid nitrogen is more than 200 degrees below zero, which are completely two extremes.

What are the consequences of extreme cold + extreme heat?

explode!

If you can live a long life by pouring liquid nitrogen directly into the molten steel in the crucible, you can give it a try.

Therefore, the cooling method they adopted was to slowly cool down from around the crucible, and finally to the surface of the crucible.

Because steel conducts heat very fast, when the temperature on the surface of the crucible has begun to drop, it means that the temperature inside has almost dropped.

"Hiss..."

At this time, the entire first floor of the second sub-district was almost covered and covered by white liquid nitrogen smog. The experienced masters relied on their own instinct to drive forklifts in "blind exercises".

And Ye Fan on the second floor also clearly saw that as the temperature gradually decreased, the color of the molten steel in the crucible began to gradually dim.

From a dark red at the beginning, to a light gray, and finally to a deep black after cooling.

This makes these liquid metals look as deep as obsidian, and it is completely black, as if it were closed eyes.

After half an hour of cooling and the volatilization of liquid nitrogen, the workshop on the second division side has completely returned to normal.

"Presumably the molten steel in the crucible has completely turned into a big iron ingot. I really don't understand why the boss is doing these things."

"Yeah, if we really want to make such a big iron ingot, we have the ability to make it, just pour it into the corresponding module and forge it, but the boss let it cool directly in the crucible today,

Tsk tsk, if you want to take out the iron in the crucible now, I'm afraid the whole crucible will have to be smashed, and it will cost more than one million yuan for no reason. Do you think the money of the rich is real? Burn it? "

"No matter what we do, anyway, the boss asked us to do things, we did it right, anyway, there are bonuses to get, but this is illegal operation, and most people really dare not do it, so we deserve the bonus."

....

At this time, several workers were whispering.

And Ye Fan couldn't be bothered to care about them, even if he asked Lin Wei to command a few masters, he moved a large square frame, 3 meters long, 3 meters wide, and 20 centimeters high, and laid it flat on the ground.

"Pour the molten steel in here." Ye Fan said to the operator who was manipulating the crucible.

"Ah? Boss, where did the molten steel come from, isn't it all condensed and turned into a big iron ingot?" At this time, the operator was also stunned, and then looked at Ye Fan with a bewildered expression.

"Okay, don't talk nonsense, just follow the normal process, hurry up and work." Ye Fan also waved his hand impatiently.

To know that this is his first time refining liquid metal, the quality of this batch of metal still needs to be studied.

At this time, the operator was also operating the machine, pouring molten steel as carefully as normal, although he knew that it would not be poured out at all, because it had solidified inside, but who cares, just do as the boss said.

However, in the next second, a scene that made the entire staff doubt life appeared.

"What? Isn't it solidified? Why can it be poured out?"

"No, are you sure that this black, ink-like thing is the molten steel we just cooled?"

"Fuck, molten steel at room temperature? What kind of magical operation is this Nima?"

_

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