Who will get the explosives? This is an epoch-making product, and if ordinary craftsmen do it, it will take dozens of people to find out.

Another example is that charcoal can be used as a carbonizing agent when the solid is quenched, that is, it is infiltrated into the steel knife. How to seep? Professionals are still needed.

"Little A, Old A, Big Brother A, Uncle A, give me a master craftsman who makes gunpowder and weapons." Gongsun Kang also didn't want to be disciplined, and called Uncle A again.

"How can Childe order food? It is to be extracted from the six categories of options. "Xiao Jia is very arrogant.

"Be accommodating, Uncle Jia, it's not the first time you've done this." Gongsun Kang played his shamelessness to the end.

"Do you know Qi Wuhuaiwen?"

"Know, know, he invented the steel filling method. The quenching uses animal urine and animal fat as the cooling medium. There is also the use of a two-component quenching method. Gongsun Kang began to drool, this is a big man, he shouldn't be a big man who was drawn out at the fourth level.

"Is that him? What a feeling of happiness. ”

"He wants his son to rule over a population of more than 1 million people before he can be drawn." Xiao Jia is just stating a fact.

I knew that Gongsun Kang said that he would never believe that pie would fall from the sky again.

"Now there is only one of his apprentices in the system talent pool, do you want to?" Xiao Jia was still panting as he spoke.

I miss the big sister style when I first met Xiao Jia, how considerate Xiao Jia was at that time.

"Yes, yes, yes!" Don't think about it, Gongsun Kang is just expressing his hunger for talents.

"But he doesn't know about explosives," Xiao Jia was pouring cold water.

"Let's pull out the general among the dwarves, how can the master craftsmen be higher than us. The method of dynamite is not complicated, let me explain it to him. "Gongsun Kang still has an empathetic side.

Qi Wuhuaiwen was a famous metallurgist during the Northern and Southern Dynasties of China. A new method of steelmaking was created, which later generations called the "steel filling method" or "steel group method". This is an outstanding achievement and creation in the history of metallurgy in China, and occupies a certain position in the history of steelmaking in the world.

Qi Wuhuaiwen, a native of Xiangguo Shahe (now Xingtai Shahe), is the inventor of the Xiangguo Su Iron Knife. He summed up the rich experience of the steelmaking craftsmen of the past generations, made a breakthrough development and improvement of a new steelmaking method in ancient times - the steel-filling method, and at the same time also made unique creations in knife-making and heat treatment, making epoch-making contributions to the development of China's metallurgical technology.

When the furnace temperature rises to about 1300 °C, when the pig iron plate begins to melt, the pig iron plate moves left and right with tongs, and constantly turns the iron to make the iron evenly poured into the molten pig iron; In this way, it can not only produce a good carburizing effect, but also produce a violent oxidation effect, so that the iron and slag are separated, and the steel with less slag and uniform composition can be produced.

Quenching technology was used in China as early as the Warring States Period, but for a long time, people generally used water as the cooling medium for quenching. Although Pu Yuan, a knife-making expert during the Three Kingdoms period, and others have realized that knives with different properties can be obtained by using different water as the cooling medium for quenching, they still do not break through the range of water.

Qi Wuhuaiwen achieved this breakthrough by using animal urine and animal fat as the cooling medium when making the "Su Tie Knife". Animal urine contains salt, the cooling rate is faster than water, it is used as a quenching cooling medium, and the quenched steel is harder than the steel quenched with water; Animal fats and fats cool more slowly than water, and quenched steel is tougher than steel quenched with water.

This is a major improvement over the steel quenching process, on the one hand expanding the range of quenching media, and on the other hand, different cooling rates can be obtained to obtain steel with different properties.

Qi Wuhuaiwen may also use the two-liquid quenching method, that is, first quenching in animal urine with a large cooling rate, and then quenching in animal fat with a small cooling rate, so that a steel with better performance can be obtained, avoiding the limitation of simply using a quenching medium for quenching (i.e., single-liquid quenching).

Now the system has drawn out his apprentice. As long as he can have half the level of Qi Wuhuaiwen, Gongsun Kang is very satisfied.

Qi Wuhuaiwen's apprentice is called Zhang Huaiyuan, a man with thick hand bones, a red-black face, and is very rough smoked by the smoke. "Meet the Lord"

"Hurry up, please!" Gongsun Kang showed Corporal Lixian in a timely manner. "Huaiyuan, our gunpowder, iron-making, and knife-making are all up to you, please."

"Huaiyuan is willing to serve the Lord!" Produced systematically, absolutely loyal.

So, Gongsun Kang solved another problem.