Then come back to discuss matters..."

"Then you have to go there by boat," Hu Zhicheng said. "In the past, refined iron was smelted in a single furnace. The pig iron was burned on the coal to make it soft. The refined iron was mixed with more, making it brittle and easy to break. Later, smoldering coal was used, which improved the situation.

Some, but there was no charcoal to use. The craftsman didn't know a word, but he was very smart. The method he proposed was to build another room outside the furnace room to form a double room side by side. One room was added

A fire with charcoal is used as a fire room; a room with pig iron for smelting is a smelting room. When iron is smelted, the blast blows the flame flow in the fire room into the smelting room to melt the iron. The refined iron produced is as good as that made from charcoal.

Refined iron. The refining room and the fire room are separated, and the refining and stirring can be done at the same time. The same manpower can refining the refined iron at twice the speed... This is a secret method and is inconvenient to be written in a letter. It was not detailed in the letter before.

.”

Lin Fu was slightly startled. Charcoal is easier to use than coal. However, in the plains of the middle and lower reaches of the Yangtze River, most of the land is used for farming. How can there be so many forests that can be cut down to burn charcoal? Coal is an inevitable choice.

Smoldering coal is also the original coking coal, which can effectively remove impurities.

The process of smoldering coal was first used for porcelain. When Ge Fu compiled "The Craftsman's Book", he mentioned this method. The biggest problem in iron-making at that time was to remove impurities. Lin Fu naturally asked the following craftsmen to try it

Using smoldering coal to make iron has indeed improved the effect a lot, but it is still worse than using charcoal.

Generally speaking, the refined iron used by the Ordnance Department must be smelted with charcoal, which is custom-made; the refined iron smelted with smoldering coal is mostly used to produce agricultural tools.

Lin Fu didn't know much about the steel refining methods of later generations. He also followed the craftsmen of the time to ponder and study them, but after hearing Hu Zhicheng's explanation, he understood the benefits of the double-chamber refining method.

The separation of iron and carbon can largely prevent impurities in the carbon from penetrating into the iron, and the quality of the steel produced will naturally be much better.

The efficiency of key steelmaking can be doubled. It sounds like it is just changing a single chamber to a double chamber, but it is a huge improvement.

"This is a great thing," Lin Fu said happily, "What is the name of this craftsman? Does he have experience in managing people? No, no, no, experience in managing people is secondary. At worst, give him two human spirits.

The same assistant. With such a researching brain, the Metallurgical Supervisor can manage it. First, give him the duties of deputy supervisor——Come, come, come, you will come with me to meet this great craftsman of the world..."

Lin Fu set up a special metallurgical supervisor to take charge of iron smelting, which is why steel smelting is of great significance.

At present, at least it means that with the same investment, more high-quality steel armor can be produced.

The double-chamber refining method sounds very simple, but it can be said to be the greatest achievement since Lin Fu advocated craftsmanship and miscellany!

Lin Fu and his disciples left Dongya and walked towards Nanya Pier. As they walked, Lin Fu said to Lin Mengde: "Huaisi produces coal and iron, which can be transported by water. You can also directly open a furnace and set up a pit in Shanyang to smelt pig iron and

Smoldering coal. Double-furnace iron-making is a secret method and cannot be spread to outsiders. The iron produced in Shanyang and the smoldering coal are transported to Chongzhou. It is better to store the refined iron in Guanyintan... It won't take long. Chongzhou Iron and Soldiers will be named

Raise the world!"

"Is the fine iron and armor also sold out?" Lin Mengde asked.

"Why can't it be sold?" Lin Fu asked with a smile, "Fish, add water to the fish. The former is eaten, and the latter is the foundation. No matter how sophisticated the weapons and armor are, they are all consumables. The manufacturing method must not be leaked.
Chapter completed!