The dwarven craftsman Eric Warhammer looked at the clumsy mountain apprentice in front of him in the iron furnace with a willow stick, Eric pursed his lips and snatched the willow stick from the young man's hand: "Stir diagonally! Contact the iron with a cross-section! Follow the texture of the iron, let the wooden stick fully contact with the iron!"

Glaring dissatisfiedly at the submissive mountain folk apprentices, Eric looked at the few apprentices around him, the majestic appearance of the old dwarf made these young people dare not breathe, for fear of annoying the grumpy dwarven craftsman head, looking at the apprentices with dissatisfaction, Eric snorted and muttered to himself.

"This mixing method is really good, and it doesn't need to be forged to make steel. ”

Another apprentice saw that the time had come, and hurriedly poured the prepared ore powder into the semi-solid molten iron, the apprentice holding the willow stick hurriedly began to put the wooden stick into the hot molten iron, the apprentice carefully took the burning wooden stick, and gradually burned the wooden stick, the apprentice opened the gate of the mixing chamber, and the fully stirred molten iron flowed into the cooling chamber, and the other apprentice opened the gate of the regenerator, and the red semi-solid molten iron flowed out, and the apprentices began to repeat the operation.

The method that the dwarf craftsmen are using is the method of frying steel taught by Link, the previous steelmaking method can only be made by conventional methods to make brittle pig iron suitable for making iron pots, craftsmen use forging hammers to continuously forge to decarburize the pig iron, to make steel, the current method of frying steel is to use willow wood to mix carbon into pig iron, or to reduce the speed of pig iron decarbonization, and then add ore powder, so that the carbon, phosphorus, sulfur and other impurities in the molten iron and ore powder have a chemical reaction, so as to reduce the carbon content of molten iron and make steel.

However, due to the reason of refractory materials, the regenerator and crucible used now are only made of clay and some slag, and the temperature of the iron material cannot be completely melted, and the proportion of carbon content in the iron cannot be completely controlled.

According to Link, if graphite, kaolin can be found to make refractories, regenerators and crucibles used in the steel frying method, the iron can be completely melted into molten iron, and then you can directly use steel rods to stir iron, and you can directly make steel, and the success rate is extremely high, unlike now it depends on luck.

"Completely melt the iron into molten iron, Moradin is on it!" Eric was a little unimpressed by Link's description at first, but looking at the regenerator that Link had built, his impression of the young barbarian leader who had rescued himself from the Santarim camp changed a little.

"Maybe it can really be done?" said Eric, muttering to himself, looking at the somewhat deformed regenerator that had been baked by the heat.

The regenerator is divided into inlet and outlet pipes, which are built into dense lattice holes to absorb and preserve waste heat with the brick wall. The inlet and outlet pipes are divided into two groups, left and right, and are switched by a valve. When fresh air is brought in from the left, the exhaust gases are exported from the right and the temperature of the inlet is heated to the right. At certain intervals, the valve is switched, and the fresh air is diverted from the pipe that is added to the high heat by the exhaust gas, and the exhaust gas is changed to the pipe on the opposite side of the direction to heat the other side. And so on and so forth.

This design allows fresh air to pour into the regenerator when it is heated by the high-temperature clay bricks into high-temperature air, and continues to heat the regenerator, and the exhaust gas discharged by the hydraulic water exhaust blower will also heat the clay bricks, forming a cycle of exhaust gas reuse, which effectively saves energy consumption and the amount of charcoal used, but the fire resistance of the clay bricks is still not good, and the regenerator is rebuilt by the slaves with new clay bricks every few days, which seriously affects the production efficiency.

"Well, is this furnace finished?" Link walked into the unusually hot blacksmith's workshop at this time, Eric coughed softly, stepped forward and picked out the half-solidified iron with his iron tongs, and shook his head at Link.

Link sighed in disappointment, this kind of steelmaking method recorded in the heavenly creation is completely lucky, there are too many links that need to be taken care of, with the existing technical conditions there is no way to accurately adjust the various trace elements in the iron, or wait for the refractory materials to find, it is more reliable to use the European steelmaking method, Link is full of expectations for this steelmaking method that Marx has praised, and now he can only make this batch of iron into an iron pot.

"Master, do you and your companion have anything else to need? Link said pleasantly to the leader of the dwarves.

Eric blew his ridiculous red beard and said angrily, "Go find the refractory you said! I can't wait to see what you say about steelmaking! And the wine, there's no more wine! Are you going to let us drink grassroots wine or blood wine?"

Link said he didn't dare, indicating that he had sent a search team all over the rocky ground to find refractory materials, and as for the drinks requested by the dwarves, Link said that there was really nothing he could do, and he could only meet the needs of the dwarves after the trade routes were opened in the future.

Looking at the dwarven leader who blew his beard and stared at his eyes, Link also said that he was helpless, there was actually wine in the rocks, and the mountain people used various ferns to ferment and brew a spirit that was quite not low, but this wine had an unpleasant fermentation taste, and it couldn't enter the mouth of the dwarves who were accustomed to the aroma of hops, and the orc's blood wine was brewed directly with blood plus spirits and some human body parts, the more well-known brands were "old elf intestines", "dwarf eyes", and the rocks were probably "goblin eyes" and "jackal kidneys" This type is much more terrifying than the various Chinese medicine snake wines in Link's previous life.

As for the dwarves' request to find refractory materials, in addition to looking for human stockades to forcibly buy people and form the fourth production team during this time, Link asked the orc mercenaries to find orc stockades to exchange iron pots for human slaves, and at the same time exchange soil and ore from various rocky fields.

For the commune's craftsman workshop, Link proposed the standardized process and piecework wages, the two major sweatshop artifacts, and also proposed a reward system for dwarven craftsmen with headband apprentices, but if you want to standardize the process, you must have qualified molds, the current mold fire resistance is too poor, not only the life is extremely short, but also very easy to crack, so that the iron overflows, and new refractories are urgently needed, and finding refractory materials can be said to be the most urgent task of the commune now, and constantly expand the scale of iron production in the commune, so that the commune can continue to grow.

At this time, Tyr's apprentice priest Tyka hurriedly found Link and told him the good news that he had found the mineral salt.