Cui Qing was excited, but Renault looked at what he did, and he shook his head. There was no lubrication here, and the coolant could only be replaced by grease. However, the gears he designed and manufactured had too much speed difference, so it was far from enough to apply grease directly.

Sure enough, after applying grease, the gears only lasted for a while, and when they saw the smoke started to rise again, Cui Qing was stunned again when he saw the spontaneously ignited wooden frame. It was indeed effective, but it was not enough.

Renault was not idle either. After giving instructions to Cui Qing, he ordered the craftsman to prepare the mold for the halberd head and the halberd rod. This thing was ready-made. When he took it over, he saw that Cui Qing was not happy. This was a sand mold, and it was an extremely rough sand mold. It could be cast and molded. The burrs on the obtained thing could prick the hands into sieve.

"Switch, don't use sand, use ink stone, and polish the inner wall with animal skin." Renault said. He didn't know if this method is useful. Try it. The graphite ignition point is high. If it is modern, it means it is resistant to high temperatures and the material is much more delicate, which is much better than the sand mold.

The craftsman responded and thought to himself that this is the teacher. If someone asks this, the craftsman's general can discount his legs. How expensive is the ink stone? The sand model is already good, and usually uses earth model. In the southwest region, only soil is not expensive.

Wealth has been separated into a window, specifically used to monitor the crucible, which is Renault's new discovery. The God of Wealth is a resource satellite, and scanning and analysis are the strengths. When it comes to crucibles, it is not easy to use. The changes in the ore in the crucible are clear about the chest. What are the temperature, carbon content, and impurities, and the data are updated at any time.

This is great. Renault doesn't know how to smel, but he knows what steel is, isn't it just how much charcoal is contained? With this data, it's okay for him to make any kind of steel he wants to make. It was because of seeing these data that he had the idea of ​​giving Luo Yi's weapon.

He used mud to pinch the model casually and looked for information in fantasy novels on the computer. The God of Wealth can monitor the various elements of molten iron, but he didn't know what kind of steel is better.

The so-called steel is iron with different carbon content. After checking for a long time, I felt that one with a carbon content of 1.7% is more suitable for building weapons. In fact, such steel can only be considered ordinary. A truly good steel requires alloys of different metals, such as manganese, tungsten, and molybdenum...

Anyway, alloys are the king, but now Renault doesn't have materials. Even if he has materials, he doesn't know the ratio. If he smels randomly, he knows what he will produce. Renault knows that modern alloy formulas are obtained by countless laboratories after millions or even millions of experiments. He has no chance of doing this, and even if he can do it, he is not happy to do it.

Let's use it. Anyway, after reading the weapons here, Renault thinks that high-carbon steel is almost the same. It can't be too high. To a certain extent, the steel will become brittle. He only knows so much. When he is in the mood in the future, he will look for it in the novel.

Cui Qing's wind drum was sometimes not effective, so he waved to Huya and gave him the mud mold in his hand, asking him to show it to Cui Qing.

Renault's mud mold is quite simple. There is an oil coupling plate at the bottom, a wooden frame on top, and an oil injection pipe at the top. This is the most basic structure on the machine tool. It uses oil to be recycled and poured continuously, which can cool the oil, cool the workpiece, and lubricate it at the same time.

Of course, the structure used on the machine tool is fully automatic. Use a small motor to draw the oil from the oil pan and spray it on the working surface through the oil injection nozzle without manual intervention.

Cui Qing understood at first glance, looked at Renault from a distance, with a look of shame. His husband had reminded him repeatedly, but he still couldn't come up with a good idea. In the end, it was the model sent by his husband, which really solved the problem.

The mud shape is good, Cui Qing knew after reading it, and he would definitely be able to make it by pouring fuel continuously. The gentleman's mud shape looks a bit strange, but it is not difficult to do it. Just send someone to pour fuel continuously.

It's not difficult, and there is no need for special tools. Just find a wooden plate to install it. Pour oil, control the horse speed, turn the gears, and the wind blows rotate smoothly under the lubrication and cooling of the oil. Cui Qing looked back and forth and ordered people to add fuel to the two gears. Renault felt great. It's really good. It's a long way to go, and it has a future.

As he waved to Cui Qing, Cui Qing quickly walked to the front and bowed to the ground.

"You understand everything today?" Renault asked.

"If you don't understand everything, you will benefit a lot." Cui Qing looked excited. This is a real skill.

"It's great. When you have free tomorrow, think about it yourself. What are the difficult things today? How to solve them? What is the reason?" Renault said.

"Yes, thank you for your teachings."

It's pretty good. Renault has the pride of being an old professor. It feels very good to watch the students grow up little by little.

He had long been thinking about it. When he had enough money, he built a big house and married a few houses for his wife. When there was nothing to do, he would open a school. But later he thought that it was so tiring to teach students. If he had to teach classes every day, he would be angry with stupid students. It would be better to do this like now. Although he couldn't teach a few, it would be very smooth.

Thinking about it further, no wonder Confucius was called a saint. I think that the teachers of that era, with his own thoughts, could teach 3,000 students and 72 college graduates. It was really not easy.

It took almost two hours tossing here, and the ore in the crucible had melted. Looking at the data on the screen, this is not true. The charcoal content is too low, it is pig iron.

"Come on, throw some charcoal into the stove." Renault got up, walked to the charcoal pile, picked up a few pieces of charcoal, and kept scanning the wealth, prompting the amount of charcoal that should be added.

The craftsman was busy again and threw the charcoal into the furnace through the observation damper. Looking at the ever-changing carbon content, Renault was very satisfied. At the same time, there was another question in his mind. If there was less carbon, just add it. If it was too much, what should I do if it became ripe iron? The fantasy novels didn't write about how to remove carbon, and his chemistry level was still at the high school level. This was quite difficult to deal with.

That is, the iron ore here has high grades. If it contains sulfur and phosphorus, it will not be a problem to die? It is said that if there are too many of those things, the iron produced is crispy and can be broken by hand.

When the ratio was almost done, the craftsman started working. He first put the iron spoon in and took out the impurities floating on the iron water on it until there was no impurities. Then he stopped and then went to the fire and came out of the oven.

After watching the entire process of iron smelting for the first time, he realized how difficult it was. Modern smelting furnaces are fully automatic, controlled by computers, and all kinds of configurations. As long as they are set up, the final steel you want is the steel you want. In Dachu, you can only hehehe...

The original smelting methods, what is smelted depends on luck.

In fact, Da Chu's smelting was better than he thought, and it depends on the origin of the ore, the quality of charcoal, and the eyes of the craftsmen.

Well, in the end, it’s luck. Anyway, the iron produced by each furnace is different, so the blacksmith furnace needs to be reprocessed.

If the iron produced is good enough, it will be used to build military armor. If it is too bad, it will only be used for civilians. Good iron is not used directly. It must be repeatedly forged on a small furnace, ten, thirty, fifty, and even reaching a crazy hundred refinement.

When modern people hear about the hundreds of exercises, no one cares. Only by putting them in the Great Chu will you understand how difficult it is to refine them. You have to fold them repeatedly and forge them a hundred times. If you hit a small piece of iron until the end, it is good to have one-third of them left.

A skilled blacksmith kept forging throughout the year, and the best quality like the hundreds of refined iron was only more than 100 pounds.

More than one hundred kilograms are not enough for a heavy cavalry’s full set of armor. Forty or fifty kilograms of heavy armor on the cavalry will only use more horse armor.

Of course, as long as the Emperor of Great Chu is not crazy, it is impossible to use hundreds of refined iron to build heavy cavalry. The armor on the elite heavy cavalry is only thirty, which is already the limit.

"Put the ink stone mold first, be careful."

"Tiger teeth, have you prepared the horse pee?"

Renault kept giving orders, which made these craftsmen dizzy. This gentleman was really good at causing trouble, but he was a noble man. Even Manager Cui listened to him. Don’t care what others said, just do whatever they said.

Anyway, I was idle. Renault made not one mold. I was worried that the mold would not be easy to use, so I prepared five parts of the mould and five more parts of the sand mold. In addition, there are horizontal swords, swords, and hand-removing swords...

Among the ten craftsmen, except for the three smelting over there, the remaining seven households cannot let them be idle and move.

After two days of getting along, Renault discovered that Dachu's professional route still has a long way to go. These craftsmen are all versatile. Smelting, molding, and building. Anything related to iron must be a plenary session. The same difference is, you can only be an apprentice.

A row of molds was not enough to use up a furnace of molten iron. Dachu's furnace gall was too small, only 300 kilograms. What was this enough? Renault could only give up some of the molds and cast a few of them.

When the iron was cooled down, the results of the wealth scan were not very optimistic. The quality of this batch of steel was quite ordinary. Renault was very dissatisfied with it anyway. The advantage was that it was not lacking. At least it was steel, which was slightly stronger than the Bailian Jingyi iron compared with the existing equipment in Dachu.

The Chu halberd that Luo Yi used was the head of the halberd, and the halberd rod was only ten. I originally wanted to give Luo Yi a surprise, but now it seems that there is no need. I am only a little stronger and I am even more surprised.

Forget it, I was tired and stopped working, so I went back to my room to sleep.

Renault left, and Tiger Teeth pointed to the cast weapon and said, "Start forging immediately, use horse urine to cool the fire. Don't be lazy if you want to see what your husband wants to see tomorrow morning."

After saying that, he turned around and chased Renault. In Huya's opinion, these craftsmen have made a lot of money. The gentleman personally gave me some advice and had the blessings he had cultivated in his lifetime. If he dared to be lazy, he would be serious about pulling them out and beating them to death.

Ten craftsmen gently stroked the castings, and each of them burst into tears. With their eyes, it is naturally not difficult to see that this is the iron of refining essence. After coming out of the furnace gallbladder, it is directly refining? In just a few hours, I got three hundred kilograms of refining essence iron?

A miracle!
Chapter completed!