Cui Qing was excited, but what he did, Renault looked at it and shook his head. There is no lubrication, no coolant, only grease instead. But the gears he designed and manufactured, the speed difference was too large, and it was far from enough to be directly greased.

Sure enough, after being greased, the gears only lasted for a short while, and when they saw that they began to smoke again, and seeing the spontaneously combusting wooden frame, Cui Qing was dumbfounded again. It works, but it's not enough.

Renault was not idle, after pointing out Cui Qing over there, he ordered someone to call the craftsman and asked him to prepare the mold of the halberd head and halberd rod, this thing is ready-made, take it and take a look, Cui Qing is not happy, this is a sand mold, and it is an extremely rough sand mold. It's something that can be cast, and the burr on it can pierce the hand into a sieve.

"Change, don't use sand, use inkstone, and polish the inner wall with animal skins. Renault said, he doesn't know if this method is good or not, try it, graphite has a high ignition point, in modern terms, it is high temperature resistance, and the material is much more delicate, much better than sand molds.

The craftsman should go down, thinking in his heart, this is also Mr., if you change someone to ask for this, the middle lang of the craftsman camp will be able to discount all his legs, how expensive the ink stone is, the sand mold is already good, usually with the clay mold. In the southwest, only soil is free of money.

Fortune has set aside a window dedicated to monitoring crucibles, a new discovery for Renault. The God of Wealth is a resource satellite, scanning and analysis is a strong point, and when used on a crucible, it is not generally easy to use. The changes in the ore in the crucible are clear. What are the temperature, carbon content, and impurities, the data is updated at any time.

This is fantastic, Renault doesn't know how to smelt, but he knows what steel is, isn't it just how much carbon it contains, and with this data, he has no problem with what kind of steel he wants to make. It was precisely because of this data that he had the idea of giving Luo Yi weapons.

Casually using mud to pinch the model, while looking for information in the fantasy novel in the computer, the God of Wealth can monitor the ratio of various elements of molten iron, but he doesn't know what kind of steel is better.

The so-called steel is iron with different carbon content, and after checking it for a long time, I feel that the carbon content of 1.7 percent is more suitable for building weapons. In fact, such steel can only be regarded as general, and the real good steel is to add alloys of different metals, such as manganese, tungsten, molybdenum......

Anyway, alloy is king, but now Renault has no materials, and even if there are materials, they don't know the proportion, and they smelt indiscriminately, and the devil knows what will be refined. Renault knows that the modern alloy formula is obtained from countless laboratories after millions or even tens of millions of experiments, and it is no fun for him, and even if he can do it, he is not willing to do it.

Deal with it, anyway, after reading the weapons here, Renault thinks that it is almost the same as having high-carbon steel, not too high, high enough to a certain extent, the steel will become brittle, he knows so much, and when he is in the mood in the future, he will find it from the novel.

Cui Qing's wind drum was not working from time to time, so he beckoned to call Huya, gave him the clay mold in his hand, and asked him to show it to Cui Qing.

Renault's clay mold is quite simple, with an oil tray at the bottom, a wooden frame at the top, and a fuel injection pipe at the top. This is the most basic structure in the machine tool, circulating oil, constantly pouring, which can cool the oil and cool the workpiece, and at the same time play a role in lubrication.

Of course, the structure used on the machine tool is fully automatic, and the oil in the oil pan is pumped with a small motor and sprayed on the working surface through the fuel injector without manual intervention.

Cui Qing understood it at a glance, glanced at Renault from a distance, with a look of shame, Mr. had reminded him again and again, but he still didn't come up with a good solution, and in the end, it was the model sent by Mr. that really solved the problem.

The mud shape is good, Cui Qing knows after reading it, and he will definitely be able to do it if he keeps pouring oil. The mud shape of the gentleman looks a little strange, but it is not difficult to do, just send someone to pour oil on it.

It's not a difficult task, and you don't even need special tools, just find a wooden tray to install it, pour oil, control the horse's speed, turn the gears, and under the lubrication and cooling of the oil, the wind drum rotates smoothly. Cui Qing looked back and forth, and ordered someone to pour oil on the two gears, and Renault was very relieved. It's really good, it's promising.

Waving at Cui Qing, Cui Qing walked quickly to the front and bowed to the ground.

"Do you understand everything today?" asked Renault.

"I don't know everything, but I benefit a lot. Cui Qing's face was excited, this is a real skill.

"Very good, when you have free time tomorrow, you should think more about what is difficult to solve today's affairs, how to solve them, and what is the reason. Renault said.

"Yes, thank you, sir. ”

It's good, Renault has a kind of pride in being an old professor, and it's cool to watch his students grow up little by little.

He has long had this thought, and when he has earned enough money, the big mansion is built, his wife marries a few rooms, and when there is nothing to do, he will open a school. But then I thought about it, how tiring it is to teach students, I have to go to class every day, and I will be half angry with stupid students.

Thinking about it a little deeper, it is no wonder that Confucius is called a sage, and it is not easy to think that the teachers of that era, with such a mind as himself, can teach 3,000 students and 72 university graduates.

It's been tossing here for almost two hours, and the ore in the crucible has also melted, looking at the data on the screen, this can't be done, the carbon content is too small, this is pig iron.

"Somebody, throw some charcoal into the hearth. Renault got up, walked over to the pile, picked up a few pieces of charcoal, and scanned the fortune to indicate how much charcoal should be added.

The craftsman got busy again, passing the charcoal through the observation damper and throwing it into the furnace, looking at the ever-changing carbon content, Renault was very satisfied. At the same time, there is another question in my mind, if there is less carbon, just add it, if there is more, what to do if it becomes mature iron, I don't write how to remove carbon in fantasy novels, and my chemistry level is still at the high school level, which is very difficult to do.

That is to say, the iron ore here is high enough, if it contains sulfur and phosphorus, there is no need to worry about death? It is said that there are too many of those things, and the iron that comes out is brittle, and it can be broken by hand.

When the ratio is almost over, the craftsman begins to work, first put the iron spoon in, and take out the impurities floating on the molten iron one by one, until there is no impurity, then stop, and then go to the fire to the furnace.

After watching the whole process of iron smelting for the first time, he realized how difficult it was. Modern melting furnaces are fully automatic, controlled by computers, all kinds of blending, as long as it is set, the final output is the steel you want. In Da Chu, you can only hehehe......

The primitive smelting method, what is smelted, depends on luck.

In fact, the smelting of Da Chu is better than he thought, depending on the origin of the ore, the quality of the charcoal, and the eyesight of the craftsmen.

Well, in the end, it's luck, anyway, the iron that comes out of each furnace is different, so the blacksmith furnace is needed for reprocessing.

If the iron is good enough, it will be used to make armor, and if it is too poor, it can only be used for civilian use. Good iron is not directly used, it must be repeatedly forged on a small furnace, ten, thirty, fifty, and even reach the hundred refinements of madness.

When modern people hear about Bailian, no one will care, and if you put it in Dachu, you will understand how difficult Bailian is. It is necessary to fold and forge a hundred times repeatedly, and a small piece of iron is beaten to the end, and it is good to be able to leave one-third.

A skilled blacksmith, all year round, keeps forging, like the best of refined iron, and beats more than 100 catties.

More than 100 catties, not enough for a full set of armor for a heavy cavalry. The heavy armor on the cavalry will be used up for forty or fifty catties, and the horse armor will only be used more.

Of course, as long as the Great Chu Emperor is not crazy, it is impossible to build a heavy cavalry with a hundred refined iron, and the armor on the elite heavy cavalry is only thirty refined, which is already the limit.

"Pour the inkstone mold first, be careful. ”

"Huya, is the horse urine you prepared ready?"

Renault kept giving orders, which made these craftsmen dizzy, this gentleman is really good at making trouble, but he is a nobleman, even Steward Cui listens to him, don't care what people say, just do it.

Anyway, it's idle, Renault asked people to prepare a mold is not a copy, worried that the mold is not easy to use, the ink stone mold is prepared in five parts, and the sand mold is another five. In addition to this, there are horizontal knives, swords, and untie knives......

As for the ten artisan households, except for the three households that are smelting over there, the remaining seven households cannot let them be idle, and they all move.

After two days of getting along, Renault found that Da Chu's professional route still has a long way to go, and these craftsmen are all-rounders. Smelting, molding, building, everything related to iron, must be fully understood, and you can only be an apprentice.

A row of molds is not enough to use up a furnace of molten iron, and Da Chu's furnace is too small, only 300 catties, what is this enough for? Renault can only give up some of the molds, and cast a few of each.

When the molten iron cooled down, the results of the wealth scan were not very optimistic, the quality of this batch of steel was quite ordinary, and Renault was very dissatisfied anyway. The benefits are not nothing, at least it is steel, and compared to Da Chu's existing equipment, it is slightly stronger than the hundred refined iron.

The Chu halberd used by Luo Yi, the head of the halberd is a hundred refining of refined iron, and the halberd rod is only ten refining. Originally, I wanted to give Luo Yi a surprise, but now it seems that it is unnecessary, it is only a little stronger, and it is a surprise.

Forget it, I'm tired, I don't do it, go back to my room and sleep.

Renault left, and Huya pointed to the finished weapon and said, "Start forging immediately, use horse urine to cool the pure fire, and don't be lazy when Mr. will see it tomorrow morning." ”

After speaking, he turned around and chased after Renault, in Huya's opinion, these craftsmen have made a lot of money, and Mr. personally instructed them to cultivate the blessings of several lifetimes. If you dare to be lazy like this, it is only right to pull them all out and kill them.

Ten craftsmen, caressing the castings, one by one with tears in their eyes, with their eyes, it is naturally not difficult to see that this is a hundred refining iron, coming out of the furnace, it is directly a hundred refinements?

What a miracle!