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

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

"Just wait until the cooling is completely complete, and then you can test it to know if the forging is successful." At this time, Ye Fan was also secretly thinking.

"Let's start the cooldown process now." Ye Fan estimated that the time was almost up, and then said to Lin Wei.

"Huh? Boss, this... Isn't that out of the norm? How can it be cooled directly in the crucible? When the time comes, if it solidifies, it will be a big iron ingot!

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

To be honest, he has been eating this bowl of rice in heavy industry for so many years, and it is the first time that someone has made such a strange request.

It was his boss who made this request, and he didn't do it, and he didn't do it.

"Don't worry, according to what I said, a few of you, start the cooling procedure, go directly to liquid nitrogen, and there will be a bonus when you finish it." Ye Fan casually commanded a few workers and spoke.

"Good boss!" The boss who saw the biggest of the workers all spoke, and if they dared not listen, they immediately walked out of the second division, began to direct a few forklifts, and moved a few barrels of liquid nitrogen.

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

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

If it is calculated according to the normal operating rules, this cliff is an illegal operation, and if it is seen by the people of the Authority, I am afraid that it can be severely fined.

At this time, Ye Fan, who was in the operating platform on the second floor of the factory, could clearly feel that the temperature of the surrounding air had risen slightly.

Because the heat is distributed upwards, and their second floor is like a barbecue grill.

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

At this time, there were already several masters, wearing heat-insulating clothing to isolate the heat and oxygen cylinders to resist the harmful poisonous gases emitted by the high temperature of the steel.

After all, when there is an accident in many steel mills, the molten steel in the large crucible at the top is all poured on the ground, and the air temperature is almost 1,000 degrees Celsius.

Many people who don't have time to escape are often burned to death not by molten steel, but by the hot air exhaled into their lungs and their respiratory tracts burned.

Lin's Heavy Industries has also done drills in this area before, so there are oxygen cylinders and everything, and liquid nitrogen is completely for accelerating cooling, or it is used for saving the scene in extreme situations.

Therefore, almost all of Ye Fan's requests today can be found on the spot in the factory, without having to go outside to buy them.

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

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

In the center of the smoke, the pot of molten steel, glowing with a dark red glow, showed no signs of cooling.

Why not just pour liquid nitrogen into the crucible for a faster level of cooling, but slowly cool down on the ground around the crucible and then start cooling the surface of the crucible, never leaving the molten steel inside?

Because anyone who has studied physics knows that molten steel is completely 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 is completely two extremes.

What are the consequences of extreme cold + extreme heat?

Explode!

If you pour liquid nitrogen directly into the molten steel of the crucible and live a long life, you can give it a try.

So the cooling method they take is to slowly cool down from the perimeter of the crucible, and finally to the surface of the crucible.

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

"Hiss..."

At this time, the entire first floor of the second division has almost been filled and covered by white liquid nitrogen smoke, and the experienced masters are completely relying on their own instincts, driving forklifts in "blind operation".

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

From a dark red at the beginning, to a pale gray, and then to a deep black after the final cooling.

It makes the liquid metal look as deep as obsidian, it's completely black, as if you have your eyes closed.

After half an hour of cooling and the evaporation of liquid nitrogen, the plant in the second division has completely returned to normal.

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

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

Tsk, if you want to take out the iron in the crucible now, I'm afraid that the entire crucible will have to be smashed, and this will cost more than one million more for no reason, do you say that the rich man's money is really used to burn? ”

"What's the matter, anyway, the boss asks us to do things, we just do the right thing, anyway, there is a bonus, but this is an illegal operation, and ordinary people really don't dare to do this, so the bonus is also what we deserve."

....

At this time, several workers were whispering.

And Ye Fan didn't bother to care about them, even if he asked Lin Wei to command a few masters, he moved over a large square frame, 3 meters long, 3 meters wide, and 20 centimeters high, and spread it on the ground like this.

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

"Huh? 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 confused expression.

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

You must know that this is the first time he has refined liquid metal, and the quality of this batch of metals still needs to be studied.

At this time, the operator was also operating the machine, carefully pouring the molten steel as if it were normal, although he knew that he couldn't pour it out at all, because it had solidified inside, but what about him, just do what the boss said.

However, in the next second, a scene appeared that made the staff in the audience doubt their lives.

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

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

", molten steel at room temperature? What kind of magic operation is this Nima? ”