Dingding, Dangdang!&1t;/p>

Dingding, Dangdang!&1t;/p>

In the Royal Military Factory, thousands of craftsmen were struggling to beat pieces of red-burned iron. As the beating was done, the charcoal in the iron was continuously consumed, thus obtaining steel.&1t;/p>

These cooked iron are pig iron coming out of the blast furnace, then poured into a stirring furnace for heating, heated to a semi-solidified state, and then stirred with willow trees.&1t;/p>

With the stirring, the charcoal in the willow tree merges into the pig iron. After continuous stirring, it becomes cooked iron, and then it is repeatedly forged to obtain steel.&1t;/p>

This is the method of steel frying.&1t;/p>

Europeans only mastered this method of steel speculation in the 18th century, but it was the 17th century. The steel making technology of the Ming Dynasty was indeed one hundred years ahead of the Europeans.&1t;/p>

It was the hot summer, and the craftsmen were beating by the stove, sweating profusely. In terms of efficiency, a craftsman could make more than 50 kilograms of steel every day. Just in terms of efficiency in this era, it is already the most efficient steel production in the world.&1t;/p>

Westerners exhibited the same method of stir-frying steel a hundred years later, but Europeans stirred with iron sticks, unlike China. The willow wood is burned after stirring, blended into the cooked iron, and added charcoal to the very soft cooked iron to obtain harder steel. Therefore, after Westerners knew that the steel frying method was still inferior to China. Although this method of stir-frying steel was relatively low, before 187o, Europe and the United States used this steel production technology to build a 70,000-kilometer railway.&1t;/p>

However, in Zhu Youxiao's eyes, such technology is really too low-efficiency, and the labor intensity of craftsmen is very high, and the working environment in hot weather is extremely harsh.&1t;/p>

So Zhu Youxiao asked someone to build a 1.2-meter-high stove, which can hold 35o kilograms of molten iron and has six air inlets at the same time.&1t;/p>

This stove was built in just three days.&1t;/p>

"Your Majesty, is this stove really used to make steel?" A steelmaker asked in disbelief. Zhu Youxiao nodded and said, "Of course."&1t;/p>

"Shu Caomin said bluntly that this stove does not require charcoal or coal, there is no fire at all, and there is no way to make steel." The steelmaker directly asserted with his years of experience in steel making.&1t;/p>

"It's okay, just try it." Zhu Youxiao smiled and ordered the steelmaker: "Populate the iron in!"&1t;/p>

The steelmaker is helpless. The emperor wants to try it, so let's try it! But in his opinion, this is simply a meaningless attempt. Can steel be made without any fuel? Just think about it and you will know that it is impossible.&1t;/p>

Soon the workers poured 35o kilograms of molten iron into this strange little stove. The molten iron was not cooled and was very hot, reaching 12o degrees Celsius.&1t;/p>

"Pull the blowing wind." Zhu Youxiao waved his hand and ordered.&1t;/p>

The workers then pulled the blower hard, and the air from the air inlet was blown into the furnace in large quantities. As the noise of the blower continued to sound, the workers pulled it for nearly ten minutes, but there was still no change.&1t;/p>

The workers unconsciously slowed down the blower's breeze, but at this moment, a spark suddenly spurted out from the furnace mouth, and a terrible sound came out.&1t;/p>

Everyone was stunned. What's going on?&1t;/p>

"Roll! Keep pulling!" Zhu Youxiao shouted happily. The workers immediately came to work hard and pulled the huge powerful blowing. A large amount of air continued to blow into the furnace, and the reaction in the furnace became more and more intense.&1t;/p>

The sound of bang! kept coming, the whole furnace seemed to be about to explode, and Mars erupted like a volcano.&1t;/p>

"Ah!"&1t;/p>

A worker was frightened and collapsed on the ground. The steelmaker watching from the side ran up and pulled the blowing air together.&1t;/p>

The temperature in the furnace continues to rise, and the oxygen and part of the iron in the air combine to produce "iron oxide". The iron oxide oxidizes silicon and manganese, and the generated substances and iron oxide form slag. The iron oxide also combines with carbon to produce carbon monoxide and carbon dioxide gas.&1t;/p>

This is the oxidation method. To put it bluntly, it is the same principle as burning charcoal. When the charcoal is not hot, blowing it inside will become hot because oxygen accelerates the oxidation of the charcoal, thus creating a high temperature.&1t;/p>

Pig iron can also be oxidized. The temperature of the molten iron is 12oo degrees. After a large amount of air is blown in, the temperature rises to 16oo degrees, which will cause a violent reaction and does not require any fuel.&1t;/p>

Finally, the violent reaction stopped.&1t;/p>

"Reversing the furnace." Zhu Youxiao waved his hand and ordered with anticipation. The furnace turned over and a furnace of molten steel poured out directly from the furnace.&1t;/p>

"This, is this steel?" The steelmaker was surprised. Zhu Youxiao was also ecstatic. He knew that the iron could obtain steel after oxidation, but he did not expect it to be so smooth.&1t;/p>

This is the method of steelmaking of converters. The reason why this kind of furnace is called a converter is that the furnace can rotate and pour out the molten steel.&1t;/p>

Converter steelmaking method is actually a technique that is so simple that it cannot be simple. As long as the air is blown in, the molten iron will naturally undergo a violent oxidation reaction.&1t;/p>

Haha! It's a rhythm that goes against the sky!&1t;/p>

Zhu Youxiao was in ecstasy and quickly asked the craftsmen to take the molten steel to cast.&1t;/p>

However, Zhu Youxiao was poured a basin of cold water on his head. I saw that the steel was so brittle when the steel was hot forged. After finally cooling down, it was still so brittle when the cold forged was cold.&1t;/p>

"Your Majesty, this steel... is too poor to use." The craftsmen said carefully. Zhu Youxiao waved helplessly. Obviously, there was still something wrong with the iron ore.&1t;/p>

Hot forging is too brittle, which means that the sulfur content is too high. Cold forging is too brittle, which means that the phosphorus content is too high. Dephosphorization and desulfurization are still a problem.&1t;/p>

Zhu Youxiao had already died of brain cells at this time, and he still had a headache about desulfurization and dephosphorization.&1t;/p>

Converter steelmaking is indeed simple, but the requirements for iron ore are relatively high. In this primary converter, during the oxidation process of pig iron, the "fuel" in pig iron is burned out in vain and is not used. The later open furnace steelmaking method utilizes these wasted heat, which greatly reduces the requirements for iron ore quality.&1t;/p>

However, Zhu You proofreads the structure of the open furnace and is in a dark state. If it is really a design, it is not a big problem. However, it takes a long time. Obviously, as the emperor, he did not spend so much time on technical research.&1t;/p>

Zhu Youxiao, who has not returned to the palace for more than half a month, returned to the palace in a dismay. To smelify and make steel, it depends on whether Xu Guangqi can find high-quality iron ore, very low-sulfur coking coal.&1t;/p>

If you can't find it, then find a way to study converter dephosphorization and desulfurization technology, or study open furnace steelmaking technology.&1t;/p>

After returning to the palace, Zhu Youxiao received a report from Li Jinzhong. The rumors outside the market had become more and more intense. One of the rumors made Zhu Youxiao laugh and cry. There were a lot of rumors in the market that the emperor was addicted to blacksmith's work and ran outside the city to make irons every day. The title of blacksmith emperor has begun to be widely circulated.&1t;/p>

The Blacksmith Emperor?&1t;/p>

Zhu Youxiao suddenly felt ridiculous and sarcastic. Isn’t he the carpenter emperor? Now he has become a blacksmith! It seems that history can still change!&1t;/p>

Facing the Donglin Party jumping down the mountain, Zhu Youxiao felt it was time to rectify it.&1t;/p>

!&1t;//p>
Chapter completed!