I learned skills in a different world

After Chu Kui left, Shen Fangshi sat in his room and thought for a while. Although he had a second option, he actually felt that Chu Kui and the others would not hurt him, but it was always right to be more cautious.

"System, if I make any mistakes in my work, you must remind me." In this world, you can never remind yourself to be cautious enough.

The system said nonchalantly: "Host, I am a craftsman system, and I may not be as thoughtful as the host..."

"...Forget it, I'll just count on myself."

Shen Fangshi put away his thoughts and opened the system interface.

His mission has been refreshed.

[Personal interface:

Host: Shen Fangshi

Sex: Male

Cultivation realm: Eleventh level of Qi training

Faith value:

Energy value:1,997,768,866

…………

Mission: Tool manufacturing

Professional degree: 37% (entry level)

Approved value:

Mall

Task:

“Dip——Complete the main task 3 and teach 10 people to make artifacts to the entry level.

Completion reward: six tons of iron birch (hardness is 2080.8 kgf, twice the hardness of steel). "

“Dip——Complete the main task 4, the tool manufacturing professionalism reaches 41% and above, and the tool manufacturing reaches the ordinary level.

Completion reward: two hundred high-grade spiritual stones. "

"Dip - Complete the main task 5, smelt one ton of high carbon steel with a carbon content of about 0.6% to 2%, and obtain the approval value.

Completion reward: fifty high-grade spiritual stones and a detailed drawing of the fire gun. "

"Dip - Complete side task 1, build the sharpest knife in the world, and gain recognition points.

Completion reward: A detailed drawing of the artillery. ”]

Seeing the exchange, Shen Fangshi raised his eyebrows. Is this a direct evolution from cold weapons to the era of hot weapons? But gunpowder has not yet appeared, so it is too fast to directly create firecrackers and artillery.

The coal mines were gradually mined according to Shen Fangshi's expectations. Although the mined raw coal could be used directly, Shen Fangshi was still prepared to process it.

For example, it is processed into coke and the utilization efficiency of coal is improved through coking. Coking coal has a higher ignition point than ordinary coal, but the heat emitted after combustion is much higher than that of ordinary coal, making it a good steelmaking fuel.

Moreover, coke has no black smoke, no peculiar smell, and is less harmful to the human body.

It can also shape and process pulverized coal into coal cakes, thereby increasing the use value of coal. It is not only more convenient and easier to carry than traditional bulk coal, but also solves the problem of pulverized coal falling on iron tools during the iron smelting process, thereby improving the efficiency of the coal. The quality of ironmaking.

To make coking, the coal should first be sorted, crushed and sieved. The coal should be washed and desulfurized to remove part of the sulfur and ash in the raw coal. There are many desulfurization methods, but under the current conditions, only the most basic method can be used. Then It is to use limestone and alkaline substances to desulfurize.

After the impurities in the coal are removed, it is put into a coke oven for smelting. The time for smelting in the furnace is about five to ten days, and the degree is when "the smoke of calcining is gone", and then "the slight water stain is extinguished" to become coke. 1

Thinking of refining coke and building a coke oven, Shen Fangshi held his forehead with a headache.

Fortunately, everything went smoothly. With the previous experience in building high-temperature iron-making furnaces, the coke oven was quickly completed.

Shen Fangshi and the craftsmen tried several times before finally mastering the coking technique.

In general, with the coal mine, everything is ready, and the furnace can finally be opened to make steel. Shen Fangshi plans to make a sharp knife to give to Chu Kui after smelting harder steel.

He had this idea before when he watched Chu Kui dance with his sword.

Because no one else knew the steel-filling method, Shen Fangshi took the lead in the first steel-making, with assistance from other blacksmiths.

The coal burned red, and under the action of the bellows, the flames in the furnace jumped up, making the fire more and more prosperous.

When sinking, hold the iron material with long-handled iron pliers and turn it over so that the iron material is fully heated and softened, so that all parts of the wrought iron can evenly absorb molten iron.

Shen Fangshi used the "cycad" smelting method. In the first two days, Shen Fangshi learned this steel-making method from the virtual teacher with the "mentor and friend" function in the simulation room.

The other apprentices and blacksmiths also stared at Shen Fangshi's movements.

He didn't make any requirements as he was not an apprentice, but the apprentices who followed him had to learn how to make tools, which required dabbling in a little bit of everything, so the apprentices who followed him were not limited to blacksmiths or carpenters.

If you want to forge pure steel, you need to carburize, which is to increase the carbon content of steel products. Generally speaking, medium carbon steel has a carbon content of about 0.3-0.6%, and high carbon steel has a carbon content of above to about 2%. The higher the carbon content of steel, the harder it is.

Therefore, after it is heated to a certain level and calcined in burning charcoal for a certain period of time, it is taken out and started to be forged.

Shen Fangshi clamped the hot red iron material to the iron pier, raised the hammer awarded by the system and began to hammer and shape it continuously.

To make a good knife, it is necessary to repeatedly hammer and shape it. Repeated forging can eliminate inclusions in the steel, increase toughness, and improve the performance of the steel.

Swinging the hammer like this hundreds of times was a bit too much for even Shen Fangshi. Although Shen Fangshi had started practicing since he came to this world, the soul magic power that Shen Fangshi cultivated had not been refined into his body. The sword technique "All Things Are Born" could only make his body Having better quality does not make him infinitely powerful and physically strong.

Moreover, the temperature in the blacksmithing room was extremely high, and soon Shen Fangshi was dripping wet.

When he was hammering in the space simulation room, he didn't feel much because his soul was powerful.

But the same cannot be said for his real body.

Several times, the apprentices and blacksmiths nearby wanted to help and took turns hammering.

However, Shen Fangshi wanted to complete the making of his first knife alone, so he gritted his teeth and persisted.

It wasn't until the finished product began to take shape that Shen Fangshi was exhausted and drank some spiritual spring water to regain some strength before he started throwing steel again.

When forging the blade of the knife, Shen Fang used the method of pouring pig iron to make the blade have a surface layer of steel structure. This can make the surface of the knife hard, the interior flexible, wear-resistant and durable. 2

There is a key step in the two processes of shaping and steel polishing, which is quenching. The quenching treatment can significantly increase the hardness of steel.

The cooling water for quenching is preferably cold running water. The river next to the workshop meets the standard. In addition, Shen Fangshi also added spiritual spring water in the space world, various amounts of animal fats, and urine. , nitrate and other substances.

When sinking, put the forged knife into the water.

——"Chi la".

The heat was rising and the mist filled the air, covering Shen Fangshi's figure.

When sinking, take it out and put it back into the stove for tempering.

Otherwise, although quenching does increase the hardness of the tool, it also becomes brittle, easily deformed, and even small cracks may appear. At this time, the heated steel needs to be slowly cooled through tempering.

After everything was completed, Lin Xiaotao quickly handed over a piece of pig skin, which Shen Fangshi had already told him.

When sinking the knife, take the pigskin and put it on the knife while the high temperature is still there after tempering. This is the gloss oil, which not only helps to improve the gloss, but also prevents the utensil from rusting for a long time.

Speaking of which, Shen Fangshi had been looking for this piece of pig skin for a long time. Nowadays, the people in Yuchengguan don’t like to eat pork because pork always has a fishy smell. Naturally, few people raise pigs. Compared with pigs, the People prefer to raise cattle and sheep.

The pig skin sizzled as it was being burned on the knife, and a scent lingered in everyone's noses.

Shen Fangshi didn't feel it, but everyone else was already swallowing silently. How come they hadn't discovered that pork could be so fragrant before?

When the entire process is completed, the tool has been forged.

["Dip - Complete side task 1, build the sharpest knife in the world, and obtain recognition points.

Distribute reward: a detailed drawing of the artillery. ”]

Shen Fangshi was slightly surprised when he heard the sound of the system announcing the completion of the task. He did not expect that he had completed side task 1 on his first try.

Looking at the world's first high-carbon steel knife, is this the sharpest knife in the world?

The style of this knife is similar to the Miao knife from the previous world. The knife is five feet long and has a slender blade. It has the characteristics of both a knife and a gun, but the blade is wider, thicker and heavier.

The blade is silver-white in color, and the handle is dark black, engraved with a dragon totem. The blade is extremely sharp. Under the sunlight, the cold light shines, and it is domineering and restrained.

It has strong combat power and great killing power, which is very suitable for Chu Kui's fierce and powerful fighting style. When it comes to killing the enemy, it is powerful and heavy, and can kill the enemy with one blow.

As for the weapons of soldiers, long-handled knives that are easy to chop are the first choice. If the infantry holds knives, this kind of knife is a powerful weapon used to deal with cavalry. With one strike, both men and horses will be shattered.

You must know that no matter how sophisticated the sword is on the battlefield, it cannot withstand continuous slashing. Even high-carbon steel can easily become scrapped after several battles.

Therefore, a long-handled knife that can be chopped, stabbed, armor-piercing and durable, wide and heavy, and easy to use is more suitable for ordinary soldiers.

The manufacturing process of the knife made by Shen Fangshi is too complicated, the casting time is long, and the cost is high. It cannot be provided to the army that consumes a lot of money. Therefore, it is estimated that it can only be used by the generals first.

You know, in order to ensure that the task was foolproof, Shen Fangshi also used spiritual spring water during quenching.

In order to match this knife, Shen Fangshi had specially soaked a piece of ash wood in Lingquan water, used the piece of wood to make a scabbard, and carved the same totem as the handle of the knife.

The ash wood soaked in Lingquan water seems to be darker in color and more beautiful in texture. The scabbard made from it is more tough, stronger, resistant to pressure, wear and corrosion.

No matter how sharp the blade is, it will not be easily cut through, so when carrying the knife, the person holding the knife will not be hurt by the knife.

In addition, this scabbard can also maintain the knife itself.

Lin Xiaotao said impatiently: "Brother Lin Gu, try this knife quickly!"

Shen Fangshi also wanted to see how sharp the sharpest knife in the world certified by the system was, so he had some pieces of wood brought in, including the hardest ash wood currently.

Shen Fangshi took the knife and chopped down the ordinary wood first.

——"Click."

With almost no effort, the wood split in two.

Everyone watching around was shocked that this knife was so sharp.