Chapter 224: : Cheats

Of course, rely on rough animal skins and large leaf fan wind. The success rate is questionable, so I still have to find a way to make a simple version of the blower.
Although it is a simple version, it is relatively troublesome to make a blower.
First cut two boards of similar length or harder bark with a small opening in the middle, and then join the small openings together to form a cross.
Find a thin wooden stick, split the cross, and fix it on the cross wooden board. After fixing, tie the front end with straw rope.
Next, make a round shell with mud. A small circle needs to be fixed inside the shell to facilitate the rotation of the fixed cross wooden stick. In addition, a rectangular air outlet needs to be set aside, which can also be under the stick when rotating. Put a piece of wood on it.
After making it, you can turn the simple version of the blower upside down and lay it flat on the ground, and then make a detachable and extended version of the interface, and install it at the air outlet.
When needed, arrange for someone to rub the sticks all the time.
Of course, an upgraded version can also be made.
Fix three pieces of wood above the blower, two pieces upright and one piece lying flat.
Then use a small wooden stick tied with a straw rope to pull back and forth, which will save more effort than rubbing the stick directly.
After the blower part is finished, you can build a round stove to facilitate the placement of the crucible and better control the temperature.
After the original, simplified version, and blower understand how to do it, the next step is charcoal.
Charcoal is not a good thing. The best configuration is coal, but coal needs coal mine! !
It is difficult to obtain in the near future, so a certain system boss can only be forced to give up.
Collecting branches is a simple skill, but the hard part is burning the branches into charcoal.
Charcoal burning is also a technical activity, and it needs to be cut off from the air in time, otherwise it will become dust.
Not only that, the kiln used for burning charcoal is not the same as the one for burning pottery.
It is necessary to build a special kiln. It is best to build a charcoal kiln in a place with a natural step shape, which is a kiln with a small opening on the top and tuyere on the bottom.
The upper mouth is close to the upper level of the natural steps. Prepare enough sand on the upper steps for sealing. The lower steps are also prepared with sand to seal the air outlet.
Break the dry branches, put them in the kiln, fill them half-full, and ignite them from the tuyere below. White smoke will be emitted from the upper port, which is water vapor. When there is no white smoke, seal the upper and lower mouths with sand.
The branches will be heated to charcoal inside. After a few days or even longer, the kiln is disassembled after cooling.
(Note that there is carbon monoxide in it, so hold your breath and rotate the operation to prevent poisoning.)
You can use tree branches to open the kiln, wait for a period of time for the carbon monoxide to dissipate, and then disassemble the charcoal kiln. The charcoal inside is then smashed into small pieces with stones.
The method of refining bronze is:
1. Treat copper ore and tin ore first, put them in the stove and burn them with charcoal. In addition, you need to increase the temperature as much as possible.
Then copper blocks will come out of the copper furnace, and tin blocks will come out of the tin furnace. You can get it by tearing it down and removing the stove.
(Note: After the first experimental operation of the furnace, it should be reused as much as possible to avoid wasting manpower and material resources.
For example, they have built tools that can withstand high temperatures and pulled out the necessary things from the stove. )
2. Processing tin, tin is easy to purify because of its low melting point.
Fill the tin with a pottery pot/crucible and heat it on the stove. It will not take long for the tin to melt into tin liquid, which can be poured, and the mold can be pottery.
(Note: It is necessary to make an additional pot/crucible with an outlet underneath that can partly slosh.
After the tin is melted, tilt the pot/crucible with a wooden stick and the tin liquid will flow out. )
However, this thing is the same as pure copper, and the cast is rough and soft, which is not very useful.
3. Processing copper, copper has a high melting point, so it is much more difficult to melt it.
Although the internal temperature of the copper smelting furnace is sufficient to turn the copper into liquid, the temperature of the furnace mouth is much lower than this temperature, or even lower than the melting point of bronze.
So if you want to handle the copper well, you need a larger furnace to put the tiltable clay pot into it and burn it.
The temperature at the furnace mouth is not enough. In order to increase the furnace temperature, blasting is also required.
Then put a clay pot with a clay outflow port into the middle of the furnace. You can use an earthen platform to maintain its height. The outlet must be long enough to extend out of the furnace.
Put the rough copper block in front, ignite, and the copper will flow out after melting and enter the placed mold.
When this thing first came out, it was the same as tin, and the casting was very rough and soft.
4. Combine copper and tin into bronze.
Do the process again with the copper melting equipment above, and put in the purified copper and purified tin.
This time, it was quite pure bronze liquid that could be used for casting. Before tilting the crucible, it takes a certain amount of time for the tin and copper to mix well.
In addition to crucibles, blowers, and charcoal, there is another important thing, that is, the mold (fan).
There are two ways to get the mold:
1. Fan casting method. Also known as the block model method, the production process is roughly divided into four steps: model making, model making, pouring and trimming.
For example, if you want to make an axe, a hammer, and a saw, you can squeeze out the axe, the hammer, and the saw with mud in a normal ratio.
After they are kneaded, they are burned in a fire to form a shape, and then they are kneaded with mud to form a fan.
After you have a fan, you can cast the dissolved metal into the fan.
2. Lost wax method. Refers to a wax mold made of easily meltable materials, such as yellow wax (beeswax), animal oil (butter), etc.
Then pour fine mud on the surface of the wax mold to form a mud shell on the surface of the wax mold, and then coat the surface of the mud shell with refractory material.
It is hardened to form a mold, and finally the mold is baked to melt the wax oil and flow out to form a cavity.
The copper liquid is poured into the cavity, and there is no mark after solidification and cooling. The smooth and precise casting lost wax method is a method of investment casting bronze.
Since there is no beeswax now, the second option is directly passed by Chen Chao.
After earnestly inquiring (crossing out) to understand the crucible and blower, the making of the mold, the treatment of charcoal, and how to make bronze, the next thing is much simpler.
In general, just do it!
The production sequence is charcoal-blower-crucible-mold.
Before getting charcoal, you need to set up a stove. Chen Chao called the Pottery Department·Minister·One-Eyed and talked to him about the specific needs and demand.
So he let Cyclops do it, and Chen Chao started to smelt two blowers and two crucibles, one for copper and the other for tin.