Release that Witch

Under the tumbling of molten iron, silicon and manganese were first oxidized, and then the carbon in the pig iron was turned.

In the high temperature of nearly 1,500 degrees, carbon combines with the oxygen in the air to form carbon monoxide. The heat released causes the furnace to "boiling". The flame from the mouth of the furnace almost engulfs the blowing pipe and the hob. Why the bracket also covers the heat-resistant coating.

A large amount of carbon monoxide escapes outward, and it is in contact with the outside air at the mouth of the furnace, followed by intense combustion, which is like a furnace. The violent sound of gas expansion overshadowed the sound of the steam engine for a time. Everyone could not help but retire before the scene like a volcanic eruption. Only Roland stood with his hands and stood up against the hot wind, completely immersed in the roar of steel flames. in.

Unfortunately, the current technology can only be filled with air to make steel. If it can be replaced with pure oxygen in the future, the fireworks will be even brighter.

Finally, the reaction is phosphorus and sulfur. When the oxides of the two and the limestone form slag, the flame begins to retreat. At this time, the molten iron has basically become steel. The lighter **** floats on the molten steel. As long as the converter is tilted, the molten steel can be poured out of the tapping port like pouring tea.

According to the rules of modern steel mills, at this time, the **** ball, the **** dart, and the infrared detection method are used to prevent the upper scum from flowing into the steel ladle. No winter city's current technology can't do this, so Roland's solution is also very simple, that is, don't fall too clean. When there is still a small amount of molten steel left in the furnace, the furnace is directly lifted, and then they are poured together with the slag. If you waste a little, you will waste a little. If you collect more, you can return to the furnace to refine it. Anyway, he does not have to pursue any production benefits.

In order to ensure the quality of the steel, the finishing work is to remove excess oxygen from the molten steel.

The bauxite that is continuously transported from the long song fortress can act as a deoxidizer. A bucket of pure aluminum separated from Lucia is poured into molten steel, and the resulting alumina **** is floated together with unreacted aluminum to the surface. At this point, the entire steelmaking process is completed.

When the bright molten steel flowed into the mold and turned into a piece of dark red steel ingot, the officials of the City Hall had been shocked to speak.

The main means of steelmaking in this era is still at the level of 100-forged steel. A steel body can be passed down from generation to generation. No one has ever seen steel produced like a running water, even the "Steel Star". Already able to produce steel in large quantities, but most people regard it as an accessory to the witch's ability. Without Anna and Lucia, the steel could not be produced.

But this time it is different. When you see that converter steelmaking does not need to rely on the power of witches, it can only be realized by ordinary people’s hands.

There is only one "Steel Star", but there are countless converters and workers.

Steel is no longer a rare material, and in the future this sturdy metal will be produced from the foot of the northern slopes, replacing those soft and fragile wooden and bronze appliances.

Roland is very pleased with the frightened expression of the city hall officials. If it cannot be shaken by the majestic beauty displayed in the steelmaking process, it is not expected to be a qualified leader. Workers may only see the ingots in front of them, and they should be able to see the future represented by the ingots.

At this point, the coal-iron-reconstruction industry without winter city has begun to take shape from mining to smelting iron, then from smelting iron to steelmaking, and finally casting steel into various objects. This process can be realized by ordinary people. Coupled with the rapid growth of population and education popularization, Roland has been able to hear the sound of the steel wheel running over the earth.

It is true that the quality of the newly released steel is still in need of further testing by Lucia. The blowing time and the **** removal formula are slowly adjusted according to the test results, but all of this has finally started.

......

Roland, who has completed a great cause, has not stopped, and he still has a lot of work to do with the memory replay of the dream world.

Now that the primary textbook has been completed and rewritten, he has turned his attention to a higher level of mechanical professional textbooks. No winter city now has the basis for mass production of steel, so high-performance processing equipment is undoubtedly the next step for him. thing. The batches of simple machine tools that were originally manufactured have become less and less suitable for processing high-end products, and they are incapable of facing parts such as fortress guns, heavy machine guns, and grenade fuzes.

So where is the detailed drawing?

The school library may be a good choice. Roland didn't go there when he was studying. The legendary cricket didn't meet it once. It was a lot of books, and many of them involved the mechanical design principles.

After eating dinner, he lay down on the bed early.

Since wandering in another world is not a sleep, so the first day during the normal time will be very hard, plus there is no air conditioning in the apartment building, and the hot midday sun has become a reverie. He can only fall asleep early and use the energy saved in this part of his dreams.

Entering the dream is still a sunny summer morning.

There were more than a dozen missed calls on the bedside phone. When they opened it, they were all called by two traffickers. The same is true in the SMS box.

"Big Brother, do you still have armor there? I have a friend who just wants to take some pictures, and if you have any words, please contact me immediately."

"This price can be opened a little higher, how about seven hundred?"

"The swords are also up by two hundred, which is enough. But you don't have to start the front, look at the strange and scary."

"We can talk about it if we are not satisfied with the price."

"Big Brother, are you going back?"

Roland directly turned to the last text message, which was sent by the bank. The balance of the card has risen to 3,600, and the newly-accounted one thousand is the living expenses of Jieluo.

This money is enough for him to use for a long time.

He tapped his finger, deleted all the text messages, put on short-sleeved shorts and walked into the living room.

At this point in time, Jielu has not yet got up.

Roland was too lazy to wait for the little girl to make breakfast, went straight downstairs, and found the powder shop in the alley to sit down.

"Boss, a bowl of pork powder, big."

"Well!"

Since you have money, naturally you have to enjoy it, right? To know that this is a food that even the king can't enjoy. After all, there is no rice in the gray fort.

The hot noodles quickly came up, and Roland was eating breakfast while observing the apartment building opposite.

So far, the farthest distance he has ever worked, that is, the old bookstores and small Internet cafes outside the two streets, because he is busy collecting money and memorizing information, this is his first leisure time, looking at the soul building from another angle. Residents.