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- ????????? All said and done, the first element in making a cannon is the cannon body.
This cannon body is not something you just need to pour into shape.
First of all, you have to use good wrought iron or bronze to make the gun body, so as to ensure that the gun body is strong and durable.
¡°If there are too many impurities in it and it cannot be used hundreds of times, it will all explode. Not only will it be useless, but it will also injure your own people.
Even if you add dozens of tightening hoops outside, it won¡¯t work.
Then the inside of the gun body must be turned to smooth the bore wall so that there will be no pits inside, which will greatly affect the firing distance of the shell and the use time of the gun body.
Even so, the gun body must be maintained every once in a while. Take it back and continue to use a lathe to clean the bore wall so that the wear and tear in the battle can be restored.
This also requires that the cannon wall must be thick and made of very high purity wrought iron or bronze.
This is not a problem for Liu Mingqi.
Refining wrought iron with higher purity can be done using some relatively simple methods.
¡°If nothing else, didn¡¯t we have indigenous steelmaking in the 1950s and 1960s?
In fact, this idea and steps are correct, but the key is that most people do not have this experience and do not have skilled means, so they come up with a lot of scrap steel.
I heard that at that time, the bronze statues in the temples were damaged, and even those ancient precious cultural relics did not escape.
For example, the famous Xuande Furnace of the Ming Dynasty was destroyed in this incident. From then on, there were basically no genuine ones.
Speaking of refining steel, in fact, it was not that backward in ancient times.
For example, during the Spring and Autumn Period and the Warring States Period in our country, the swords of princes and princes were unearthed, which actually reached the level of medium-carbon steel.
This is an incredible thing!
Many people don¡¯t know that steel is roughly divided into three types: low carbon steel, medium carbon steel, and high carbon steel.
??Among them, low carbon steel is called mild steel and has special uses. High carbon steel is usually used as drill bits and reamers because it is too hard Oh, by the way, it is widely used on machine tools.
The steel we come into contact with most every day is usually medium carbon steel.
For example, cars, ships, weapons, etc., as well as various daily buildings, household appliances, parts, steel products, etc., all use medium carbon steel.
So, more than two thousand years ago, our ancestors had already made cold weapons of medium carbon steel, which is simply a miracle.
It is a pity that this technique is not produced through technicalization and standardization, but is created by some excellent craftsmen and some coincidences.
Cannot be copied.
The inability to copy is a sign of whether a technology is successful.
Apart from this accident, ancient people have also been tirelessly pursuing the creation of steel, and have developed effective methods such as the steel filling method and the steel frying method.
The ancients did not understand modern knowledge and had no concept of carbon content.
The main basis for distinguishing pig iron, wrought iron and steel is its performance. Those that are hard and brittle are "raw", those that are malleable are "cooked", and those that are strong are steel.
Because the ancient frying process was carried out in a semi-liquid state, it was difficult to separate slag and iron, and the products often contained more inclusions. Therefore, even if the carbon content was high, it could only be called " Wrought iron¡±.
In fact, the biggest difficulty here is to remove the impurities after the iron ore is melted.
Including various elements in molten iron.
But the point is very simple, that is, by oxidizing these impurity elements, they can be separated from the molten iron.
Finally, when the carbon content reaches about 0.25%-0.65%, medium carbon steel can be obtained.
Yes.
You read that right, what Liu Mingqi wants to do now is to skip bronze and wrought iron and directly use medium carbon steel to cast the cannon body.
This not only provides better stability and is less likely to explode, but also reduces its weight, making it more durable.
Don¡¯t underestimate the matter of changing the material of the cannon.
Its impact on the entire weapon is a direct upgrading revolution.
The transformation from iron to steel is no less than an industrial revolution.
Now Liu Mingqi has a surging sense of mission.
This time, it is my turn to take the lead again!
The research and application of steel will ultimately be something we will lead from afar.p; When they saw Ding Zhuo and Xiuyiwei leader accompanying a young man, they didn't take it seriously and were still chatting about themselves.
"Master Li, Master Yan, Master Fang" Ding Zhuo greeted them, "Come, don't you want to see His Highness? He is here now!"
"ah?"
A group of people became energetic and gathered around one after another.
"Your Highness, can you tell me why using such a leather drum can significantly reduce impurities?"
"What are impurity elements?"
"Why does the different carbon content result in different textures of steel?"
"The oxidation concept you mentioned is very good. Is it also applicable to making weapons?"
"Your Highness, come and see if we have any shortcomings!"
""
Seeing everyone talking and being full of curiosity, Liu Mingqi smiled slightly, "Okay! Don't panic, let's take it slow! Now let me tell you what carbon content is"
The young man has never refined steel, but when it comes to these theoretical skills, he is not inferior to others at all.
The practical ability of the blacksmiths in front of them can be rated above 80%, but their theory is not up to standard at all, and they can only be considered ignorant.
Only by letting them enlighten themselves and master the theory can they achieve better development.
Even though some of them are in their thirties or forties, they have many years of experience in making and refining iron tools, so as long as they can gain a theoretical understanding, they will make rapid progress in no time!
The current refining of medium carbon steel is not their end, nor is it the only purpose of Liu Mingqi coming to them.
Making qualified cannons and lathes, simple machine tools in the mechanical industry, is the problem!
Don¡¯t underestimate the turning tool.
It can use mechanical principles to replace manual work to polish the inside of the cannon wall. This is a step forward in technological progress.
Why are my Ming Dynasty¡¯s red cannons of poor quality and often broken easily?
The reason is that there is no unified standard!
The foreign missionaries knew the process and production methods, but they could not bring the turning tools, so this created a gap.
This is the same as machine tools.
so¡¡
Liu Mingqi is looking forward to the fact that in the near future, among the group of people in front of him, or his own second-generation youth group, a person with amazing talent will suddenly appear, who can start making simple mechanized machine tools!
Only with the invention of machine tools can large-scale manufacturing of standard weapons become a reality! !
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