Pushing open the door, Li Xiang walked into Huan'er's boudoir with a fragrant meal, and to his surprise, Huan'er was not crying and sad at this time, but just sitting on the edge of the bed with a focused expression, his right hand flying, and he was making clothes. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

Huan'er saw Li Xiang appear at the door, her face was pale, and her eyes flashed with reluctance, and she said timidly: "The son is here!" ”

Li Xiang snorted the door with his feet, walked to the side of the bed with a tray, and said softly: "Good Huan'er, come and eat!" "I just don't know what she's reluctant to give up or afraid of.

Huan'er didn't stop the movement in her hand, her right hand flew over, and she said softly: "The little maid must finish this robe today before she can eat." ”

Li Xiang grabbed her right hand and scolded softly: "It's not too late to make it after eating, not to mention that if you can't finish it today, you have to wait until tomorrow to do it, you have to do it overnight." ”

Huan'er shook her head, her right hand broke free, tears instantly accumulated in her apricot eyes, and she lowered her head and said softly: "In the future, I'm afraid that the little maid will no longer be able to serve the son, this is the last piece of clothing that the little maid made for the son, and please let the son finish it and then drive me away." ”

Li Xiang frowned, listening to the clouds, but the last sentence shocked his heart, and his intuition made him feel that something had happened, so he hurriedly put the tray on the corner of the bed, pulled the clothes she was sewing, held her delicate little face in her right hand, and said solemnly: "What do you want to say, what am I going to drive you away?" ”

Huan'er looked at the handsome face of the man in front of her stupidly, as if she wanted to forcibly remember him in her heart, but the sadness in her heart could no longer be suppressed, tears welled up in her eyes, and slid down her cheeks to Li Xiang's big hand.

Li Xiang hurriedly wiped her tears, but it didn't matter if she wiped it, the tears flowed more, and his heart tightened, so he simply hugged Huan'er's weak body in his arms, patted her slender back with his right hand, and coaxed in his mouth: "Okay Huan'er, good Huan'er, if you have anything, just say it, don't hide it in your heart, say it, let Gongzi know, Gongzi will help you deal with it, okay?" ”

Huan'er didn't seem to be able to hold back any longer, her hands tightly wrapped around his waist, buried her head in his arms, and sobbed: "Now... Now that the son has Zhao Mengyao, it's not to... Do you want to drive Huan'er away, it's just, it's just, Huan'er doesn't want to leave, Huan'er is reluctant to give up his son, hmm... Not... Not! ”

Li Xiang suddenly, no wonder Huan'er is so abnormal today, he thought that he would drive her away with Zhao Mengyao, Li Xiang smiled bitterly, patted Huan'er's little head angrily, and reprimanded: "Who said that Gongzi would drive you away, Gongzi hurt you too late, how can you drive Huan'er away, besides, if you leave, who will take care of the family affairs in my backyard!" ”

Huan'er's little face lifted slightly from his arms, and he said expectantly in his eyes: "Childe really won't drive Huan'er away?" ”

Li Xiang's eyes were sincere, and he confirmed: "Even if Gongzi drives away anyone, he won't drive away Huan'er!" ”

Huan'er's eyebrows bent, and joy emerged along the eyes that were still crying, and anyone who saw it could know the joy in Huan'er's heart at this time.

In the past few days, Li Xiang returned to Rongde County, has not been out of the house, he called Yuya and Xiaoyu over, first the super 3D printer in the metal materials, heat treatment, quenching and tempering, processing technology and other knowledge for the purpose of detailed classification, began the first edition of metal materials and heat treatment publication work.

Yuya and Xiaoyu were originally busy publishing novels these days, but Li Xiang thought that the most important thing at present was the construction of basic materials disciplines, so the second daughter stopped what she was doing and began to edit and publish industrial technology books under the guidance of Li Xiang.

The three of them were so busy for several days, and finally printed more than 100 thick books.

Bringing these books to Shaoxi Mansion, Li Kang was very happy to see that Li Xiang had made so many books, and he knew that they would be of great use.

Wang Lin was curious, but he heard Li Xiang say: "Lord Wang, it's really hard for you to make artillery these days, it's better to suspend the manufacturing, I have something here for you to take a look at first." Everyone was taken aback when they heard this, and Wang Lin was even a little anxious, and hurriedly asked, "Master Li, why do you want to stop the manufacture of artillery?" Is there a new weapon to be made? ”

Li Xiang said with a smile: "Don't be bored, everyone, there is a reason why the manufacture of artillery has been suspended. If I look at the booklet in my hand, if I have studied it thoroughly, it will not be difficult to make four guns a day, let alone three or four guns a month. The crowd was taken aback at first, and then remained silent for a while.

Li Xiang said this, turned one page of the booklet again, and said: "What is recorded here is how to turn pig iron into wrought iron and steel, in fact, how to turn pig iron into mature iron and steel. ”

What Li Xiang wrote about is the principle of metal-phase transformation of iron, steel and cast iron. In fact, the early cast iron was white iron, which was brittle and hard, easy to break and not durable. As early as the Warring States Period, there was a cast iron softening technology, the specific method is to heat and forge the cast iron to decarburize to obtain white-hearted malleable cast iron, or after a long time of heating and annealing, to obtain black-hearted malleable cast iron with better toughness.

However, it was not until the 18th century that Europe had white malleable cast iron, and the United States did not have black malleable cast iron until the 19th century, which shows that ancient China was ahead of other countries in metallurgical technology for more than a hundred years. As for the production of ancient Chinese weapons, it is also to put a block of wrought iron in red-hot charcoal for a long time to heat its surface carburized, and then forge it into a carburized steel sheet, and then fold the carburized steel sheet in half and forge it many times, and finally make the shape of a sword. This steelmaking method is also called 100 steelmaking, and some steel knives in the Han Dynasty were made by this method, and the words "100 steelmaking" are also engraved on them.

Li Xiang then turned to another page and said: "What is recorded here is the method of how to turn coal into coke, and the coke produced can be used to make iron, which is much more efficient than charcoal, but the production requirements of this kind of coke are extremely high, the block is large, and there is enough strength not to be crushed, so it is not easy to make, but at present, I can only write in such detail, Lord Wang can find the people of the capital to slowly explore, or ask the charcoal factory to ask about the production method of this coke." ”

In fact, in the Southern Song Dynasty, coal was widely used as fuel, which is also due to Shen Kuo, but at that time, charcoal was mostly used for iron smelting, while Li Xiang wrote about the process of making coke. Bituminous coal is finally made into coke after drying, pyrolysis, melting, bonding, solidification, shrinkage and other stages when heated to about one degree under the condition of air isolation, this process is called high-temperature coking, and the coke obtained by high-temperature coking is used for blast furnace smelting, casting and gasification.

In ancient China, it was mostly open-hearth smelting, but if there was coke, the large-scale blast furnace smelting method would be a major milestone in the history of metallurgy, but this smelting method also had higher requirements for coke, generally requiring large particle size, low porosity, high fixed carbon and low sulfur content. (To be continued.) )