I am Wu Dalang, starting with Pan Jinlian

There is a furnace, and among the things Liu Youqian sent, he casually packed all the smelting tools.

But when Wu Fei came to the furnace with great interest, he suddenly thought of another thing, which made him a little discouraged. There was no mold!

The mold is the hardest, but also the most important thing.Use a furnace to melt scrap iron, burn it into molten iron, pour it into a mold, cool it and shape it, and the shape of a gun will be formed.However, this is the era of the Song Dynasty, there is no such thing as a gun, and no one has ever seen it, let alone a mold.This also means that Wu Fei needs to create it himself.

Wu Fei compared the density and plasticity of various metals in the memory of his mind, and also discussed with Sun the metals found in the modern era and their usability, and finally decided to use aluminum to try.

Aluminum is the softest metal, but it is still relatively strong compared to non-metal objects such as bamboo tubes.First, several types of heat-resistant and faster-cooling wood are used to cut into wooden boxes and gun barrels, and then poured and filled with aluminum to make molds, and then molds made of aluminum are used to withstand higher temperatures, and the metal’s strength is gradually improved. Tolerance.

Do whatever you think of, never drag your feet.Wu Fei nailed the drawing to a high place, and started to act according to his own idea.

The Xuanwu Hall had just been tidied up, and the other three families seemed to be frightened, so they did nothing for the time being. Liu Youqian slowly brought people back to find the place, and it has been quiet for a while recently, relatively leisurely.Wu Fei had something to do here, so Liu Youqian stayed to help.

It goes without saying that the Sun family has been following Wu Fei.

So, in this small warehouse room with a small backyard, the three of them started to work secretly.Usually, the three meals are taken out by one person, and the door must be locked before going out. Outsiders don't know what they are doing.

The three are good at different places, and the division of labor is clear.Wu Fei was in charge of making molds out of aluminum according to the drawings. After all, he was the one who came up with this thing, and the other two didn't quite understand it when they looked at the drawings.Mrs. Sun is in charge of selecting materials. She is quite familiar with the quality of various metals. Liu Youqian is the helper, pouring molten iron and heating the furnace to watch the heat.

Unconsciously, he stayed in this small room for a day and a night, with a small pile of waste wood and waste moulds, Wu Fei finally wiped the sweat from his forehead and took out a complete mould.

"Try first." Wu Fei put the mold on the table.

Liu Youqian nodded, looked at the furnace, and Mrs. Sun was watching the fire: "Okay, pour it!"

Sun commanded Liu Youqian to carefully pour the boiling hot molten iron into the mold. The first pouring began, and the three of them held their breaths in anticipation.

Unexpectedly, the first failure came too fast. Before Wu Fei had time to be happy, he saw the mold supported under the molten iron for a while, and before the pouring was completed, it had already melted together with the molten iron.

Wu Fei couldn't help shouting, feeling very disappointed.Sun Shi and Liu Youqian also let out a long sigh, and their nervousness turned into bitterness.

However, Wu Fei also reacted and realized the failure: the melting point of aluminum is only over 500°C, while the melting point of iron is as much as three times that of aluminum.At first Wu Fei thought that it would be about the same if he could hold it until it took shape, but he didn't expect it to melt so quickly.

"It seems that this method won't work..." Wu Fei frowned, thinking.

After the mold failed, the three fell into trouble again.

After a long silence, Mrs. Sun thought: "The temperature is too high and there is no way to cool it down quickly. This is the main reason. Otherwise, try doing it in water. Let the molten iron cool for a while before pouring it in water."

Liu Youqian didn't know much about iron art, so Wu Fei thought about it for a while and frowned: "It's possible to do this, but the problem is that when the molten iron meets water, although the temperature drops very quickly, it's impossible to control the speed of the temperature drop. If you are not sure, either the temperature is still too high and the aluminum mold is melted, or the temperature of the molten iron is too low, which causes premature solidification and cannot be formed."

Mrs. Sun remained silent, and she was indeed not an expert in smelting.Although he is quite familiar with metals, he has never tried smelting technology by himself.Wu Fei only knew a thing or two, while Liu Youqian didn't know anything.

The three sat in front of the smelting furnace, looking at each other speechlessly.For the three rookies in smelting, it is really too difficult to master the control of this temperature.This craft has not been practiced for ten or eight years, how can it be learned overnight.

The sky outside the house was completely dark, and the house was lit with bright candles.

After a long silence, Wu Fei let out a long sigh, patted the dust off his body, got up and waved his hands and said, "Forget it, it's getting late today, and I can't think of any good solution for a while. Why don't you all go back first, Take a good rest, we will continue tomorrow."

Liu Youqian saw that there was no help for him being exhausted here, so he could only wave his hands: "Okay, boss, I'm going to bed first, call me tomorrow morning."

Wu Fei nodded and arranged a room for him to live in Niujia Village temporarily.The county seat is still some distance away from here, and it is too tiring to go there and come here.

Mrs. Sun walked to the door, turned her head reluctantly, and comforted Wu Fei a few words: "Brother Fei, it's okay, there is still a lot of time, we are with you, there will always be a way."

After listening to her words, Wu Fei smiled, and couldn't help but reached out and patted her head: "You think too much, I'm not the kind of person who will be sentimental just because of a few blows. Ma'am, work hard today, hurry up Go to bed early."

"OK, good night."

Nothing to say all night, the moonlight is peaceful.

Watching Sun and Liu Youqian go back to the house, Wu Fei was about to close the door and go back to rest, when he suddenly thought, since there are already blueprints and methods, such good resources don't need to be wasted.No matter which world, Bufan has methods and shortcuts, but what is lacking are people with perseverance.

Wu Fei thought for a while, when he was still on mission in the army, he had never experienced any training and hardships, and he thought he still had something like perseverance.

So, he opened the door of the house with a key, sat in front of the furnace and smelting pool by the light of the candle and continued to study.

If there is a solution, it is only a matter of trying. Don’t scientists have to do thousands of experiments? If you don’t try more, how will you know where the problem is, and how can you know the solution...

In this way, Wu Fei has made up his mind since that night, to spend all day and all night in this room every day, except for eating and convenience, sleeping and resting for a short while, and the rest of the time is all trying deployment ratio.

Mrs. Sun saw it and felt distressed in her heart, but she didn't stop him except to take care of him in terms of food.She knew that what this man had made up his mind would not change.