Seeing that the craftsman took the fried steel from the taphole, which was almost completely liquid, Sun Chengping took a breath of cool air and said to his son: "We fried steel there, and what comes out is like bean dregs, and there are a lot of impurities in it." I didn't expect that what came out of this furnace was molten steel, and this alone was much stronger than ours. Needless to say, you must be in good spirits today, and you must watch a little less. When it's over, immediately replace our stove with this one. It's nothing to work here for a few days and make three or five times of money, and if you learn this, you will be used for life! ”

The three sons said yes together, each divided his labor, and each learned a few positions.

Du Zhongxiao did not stop it, this technology was about to spread out and benefit the people. This is an official industry, and it is not his own home, so there is no need for Du Zhongxiao to engage in any technical blockade. The development of the entire industry is beneficial to the country and the people.

The molten steel is poured out of the furnace and poured into the fan that has been prepared for a long time, and it is condensed into steel ingots and steel bars respectively. Due to the purity of the steel that comes out, according to the standard of fried steel in this area, it can actually be sold. However, there was a forging hammer prepared there, and when the molten steel condensed and was still red, it was clamped onto the anvil by the craftsmen. Tao XVII went to get the pin of the hydraulic forging hammer, and the huge forging hammer started.

Looking at the sparks splashing on the anvil, Tao Seventeen said to the eldest son beside him: "This is something we can't do." A forging hammer here is worth dozens of people working together, which is extremely powerful. Unfortunately, we ordinary people are not allowed to build dams to hold back water. ”

Sun Dalang also shook his head regretfully. Officials have strict control over rivers and reservoirs, and it is strictly forbidden for households to build dams.

Du Zhongxiao went to the edge of the forging hammer and watched the red iron block being slowly flattened, and then squared, and the color slowly darkened. In this process, the impurities inside are squeezed out and turned into residue and fall to the ground. After such processing, there is no need for secondary heating, and the effect is excellent for multiple processing.

On the other side, several craftsmen sandwiched the steel bars of Fanli, surrounded by a hydraulic forging hammer, methodically, little by little, and slowly processed into steel belts. In the process of thinning, the impurities inside are removed. The red fades and turns blue-black.

Tao Seventeen said: "Official, this steel belt, I don't know what will happen if you take it directly to make a knife?" The shape is neat, and there is a lot less effort. ”

Du Zhongxiao said with a smile: "What comes out of the furnace is wrought iron, how to make a sword?" To make a sword, you have to refine it before you can quench it. ”

With the current knowledge base, Du Zhongxiao can't clearly explain that wrought iron is low-carbon steel and cannot be hardened. To make a sword, even if the iron is pure, it must be tempered several times, carburized again, and the blade becomes medium and high carbon steel before it can be quenched to achieve the required hardness.

Wrought iron is too soft to be of much use. And because of the insufficient carbon content, it cannot be hardened, and it is not qualified to make swords or agricultural tools. To carburize its surface, the current method is to burn it red in a charcoal fire, forge it, and finally quench it. In this process, a large amount of iron is consumed. For people who don't understand the principle, they often mistakenly think that there is any iron essence in it, or real iron and fake iron. In fact, the purer the iron, the more complex the subsequent processing of the tool, the lower the efficiency of the simple surface carburizing, and there is neither iron nor steel in it.

At this time, the benefits of the crucible steel method are revealed. Pig iron is used directly, together with this pure wrought iron, to make tool steel for medium to high carbon steel, which consumes very little. Therefore, although the cost of crucible steel is higher, it is still profitable compared with general processing methods.

The most popular one now is actually steel filling. It is to use the melting point of pig iron is lower than that of wrought iron, and after sealing, it is heated, and the pig iron is first melted and infiltrated into the wrought iron, so as to achieve the purpose of increasing the carbon content. Steel is iron with a carbon content between pig iron and wrought iron, and the combination of pig iron and wrought iron is just enough to make steel. This is the most popular method, and most of the swords in the army are made of this method.

When Du Zhongxiao was in Yongcheng, he also tried another method. It is made of wrought iron into agricultural tools, and then melted pig iron, poured on the made agricultural tools, and then quenched. This method is simple and easy to use, and after a long period of use, the steel on the blade can be easily repaired after the steel has been worn off. The method of pouring pig iron to make a steel edge is the lowest cost and the easiest method.

Crucible steel is made of high-grade tool steel, filled steel is medium steel used for large quantities of swords, and pig iron is poured on the edge of wrought iron to make cheap iron products for agricultural tools. For the iron produced in Datong Prison, Du Zhongxiao has already planned the use, but it will take time to promote it.

Du Zhongxiao instructed the craftsman to put the steel belt on the stove fire, burn it dark red again, and then start the steel roller on one side and put it in one by one. The steel strip is driven by the steel rollers, slowly moving forward, and according to the gaps between the steel rollers, it is slowly rolled into a steel plate of uniform thickness.

Tao Qiqi followed Du Zhongxiao's side, watched the steel plate take shape, and said with a smile: "It's amazing!" After a while, the pig iron over there became this piece of steel. However, officials, what are these steel plates going to do? If you make hoes and shovels, steel bars are sufficient. ”

Du Zhongxiao smiled: "A simple use, you can use it to make armor. By the way, why haven't you seen Thirteen Lang these days? His body has grown up, and he has a lot of strength, and he is wearing a pair of steel armor, which is bound to be powerful. ”

Tao Seventeen said: "Since I arrived at Datong Prison, I followed the instructions of the officials and checked around with Chen Qin. There are mountains here, and many smelters are in the mountains, and they have not been checked for so many days. - Official, if this can make steel armor, make me a pair too. ”

Du Zhongxiao smiled when he heard it: "Your body, can you wear it?" ”

These steel plates are evenly thick, and they can already be used to make steel armor using the hydraulic forging hammer over there. If you have a heart, it is made into the kind of full-body plate armor that you saw in Du Zhongxiao's previous life movie, and it is not difficult to make the kind of full-body plate armor in the later period of Western Europe. However, the scale of the Song Dynasty's foreign wars and the situation of war horses in the army are not necessary. The cost performance is far less than that of some steel armor, and it is cost-effective with a large amount of equipment. Against the two armies, 3,000 elite cavalry is much more useful than 300 plate cavalry. The Song Dynasty was a large-scale war against the Khitan and the party, and guns were much more important than plate armor.

Watching the steel plates take shape one by one, Du Zhongxiao sighed: "With these steel plates, the iron of Datong Prison will have a way out." There is no money in the world, and only with money can other industries prosper. Now on Hedong Road, the most lacking thing is money——"

Tao Seventeen was not in his position, nor did he care about those, but he was happy when he looked at this scene of production in full swing. has been by Du Zhongxiao's side for several years, and he has become accustomed to seeing him turn decay into magic. The iron man of Datong Prison was worried, and Du Zhongxiao came for a few days, and then he saw a way out.

Sun Chengping took his three sons to the wrought iron side to take a look, and then returned to the frying steel furnace. Forging is too high-end for them, and with their own strength, they can't touch it. Sun Chengping is very practical, useless things, look at it in vain.

At this moment, Director Chen and Director Niu came down from the mountain over there. They heard that they were frying steel by themselves here, and they didn't mind. But in the end, it's a peer, I heard that the furnace was opened today, and I made an appointment to come and have a look. This is a common occurrence in the neighborhood, and it is not intended to be seen.

As soon as he crossed the river, he saw the three frying steel furnaces lying on the ground, and Supervisor Niu said, "What's wrong, how is the stove here different from ours?" ”

Director Chen also felt strange, and hurriedly grabbed Director Niu's sleeve and said, "Let's go, let's hurry over and have a look!" ”

Sun Chengping was bending over, watching the craftsman take the molten iron from the tap hole, and the big man on the side slammed the corner of his clothes: "Daddy, Director Chen and Director Niu are here over there!" We've worked so hard that they can't let this stove look at it! ”

Sun Chengping suddenly woke up, straightened up and said, "No, in their eyes, we didn't work hard in vain!" I'm going to intercept them! ”

https:

Please remember that the first domain name of this book is .. Mobile version reading URL: m.