Chen Fei explained the relevant content, and then left the drawings that he had spent seven or eight days drawing. This drawing is the drawing of a modern artillery gun he made, which is very good, and it is almost the pinnacle level of smoothbore guns. This is also the highest level that the current technical level of the Tang Dynasty can reach, as for what rifled guns, what steel cannons and the like can't be done. And Chen Fei also deliberately marked those data to the micron level to ensure that the error of those guys was not too big. And this cannon mold requires extremely good masons to make, so it should not be underestimated.

After Chen Fei left this drawing, the next thing was to be busy with another matter. Since you want to make artillery, you naturally need to have gunpowder. If there was no gunpowder, there would be no artillery. And the method of making gunpowder is actually almost an open secret in later generations, and there is no need to think about it at all. Even the formula for gunpowder has been figured out by many people, that is, charcoal, saltpeter, and sulfur. The Tang Dynasty also has these things, otherwise why was gunpowder invented in China?

"These saltpeters have to be crushed, ground into very fine powder. And the charcoal is also to be crushed, and the sulfur is also to be crushed. If it can't be crushed, then the combustion will be incomplete. But you all have to be careful, you have to be gentle, otherwise it will easily burn up when the time comes. Chen Fei said.

Chen Fei instructed these craftsmen to make gunpowder. And this kind of gunpowder is completely very easy to make, that is, it can be made by mixing three combustibles together. However, what Chen Fei had to do was to experiment with various gunpowder formulas, such as those that were more suitable for artillery firing.

"Chen Langzhong, it's easy for us to make gunpowder, but we can't get the kind of flowering bomb you said!" A craftsman said.

Chen Fei asked these craftsmen to study the three types of artillery shells, namely solid shells, shotguns, and flowering shells. But solid bullets and shotguns are easy to get out, and this flowering bullet can't be made. Because the solid bullet is also a round iron ball, as long as you make a spherical mold. That's a lot of that that can be easily made. As for shotguns, in fact, they are small solid bullets that are then wrapped into a package, and then put into the barrel to fight, so that they are small ammunition used to kill and injure the enemy's living force. As for the flowering bomb, this is a very complicated technology. Chen Fei didn't find much information about the flowering shell on this cannonball network at all, and with the craftsmanship level of these craftsmen, they couldn't do the so-called iron shell at all, and these craftsmen were not able to master the production process of this outer layer of iron shell. So this also caused everyone to have no clue about the flowering bomb, and even if they had a clue, they couldn't make it.

"This iron-clad bullet is too expensive to make, and it can't be made according to a uniform standard. What's more, we haven't even figured out the principle of the flowering bomb inside the iron shell. How is it possible to make such a flowering bomb? Chen Fei thought.

According to Chen Fei, solid shells are the most used type of artillery shells, which are used to attack the dense queues of enemies in the distance. Then, once the shells are fired, they ricochet, killing and injuring a series of soldiers. And if you are lucky, the enemy's queue is dense enough, and the weather and geography are just right, one shell is enough to incapacitate seventy or eighty enemies, which is no joke. And the shotgun is when the enemy attacks in front of you. Use these small bullets to attack the opponent's horizontal queue and kill and injure enemy soldiers. And this method, in fact, is mainly used to kill and injure the enemy's living forces, and those soldiers who have strong cover. The one that can't be killed. However, the army of this era did not pay much attention to bunkers, at most they were just some small shields. And these small shields are simply not able to resist the power of shotguns.

"Since you can't use flowering bullets. Then you passivate the gunpowder, and after passivation, let the gunpowder not explode and the power is not too great, as long as it can achieve deflagration and then push the cannonball out. Chen Fei said.

This gunpowder passivation. In fact, Chen Fei found a kind of millet gunpowder on the Internet, which was made after the passivation of ordinary gunpowder. Passivation, which slows down the burning rate of gunpowder, also allows them to reduce damage to the chamber. This kind of gunpowder explosion power is small, but the deflagration effect is very good, he mainly produces a large amount of gas through deflagration to push the shell out, and this damage to the gun chamber is very small. Ordinary gunpowder blows up the shells, which causes great damage to the gun chamber and has a great impact on the service life of the artillery. If this passivated gunpowder was used, the service life of the gun would be more than doubled, to say the least. Since Chen Fei invented gunpowder and wants to make cannons, he is willing to kneel and worship, and it would be good to be in place at one time. There is no need to deliberately delay the speed of scientific development in order to so-called drive the research of craftsmen.

And Chen Fei made the millet gunpowder, which was to better protect these guns and extend the life of these guns as much as possible. In the Tang Dynasty, the output of copper was not high, and it was better to save some or save some, after all, copper was an out-and-out wealth in the Tang Dynasty, and it could be used to mint money. If too much is used, it will inevitably lead to a lack of copper for coinage circulation. Once the copper money is reduced, the final result will be deflation, which is also a very serious problem.

If we look at it from a historical point of view, many dynasties in ancient China were plagued by deflation, that is, there was not enough copper to mint money. In ancient China, the copper standard was adopted, which required a large amount of copper to mint coins, but the copper production in China was very low, resulting in a shortage of copper. But Chen Fei made this copper cannon at this time, but he devoured a large amount of non-ferrous metals such as copper. It's not that Chen Fei doesn't want to make steel cannons, but in this era, it is impossible to make alloy steel that can cast artillery, because the steel at this time is either too hard and brittle and easy to explode, or too soft to withstand the use of gunpowder, but it is also easy to explode. Copper, a metal with the right hardness and a certain degree of flexibility and ductility, had to continue to use these bronzes to cast artillery.

Therefore, in order to avoid more serious deflation in the future, it is necessary to extend the service life of the artillery as much as possible, so that the artillery can be more effective and not waste too much of the "precious" metal copper. (To be continued......)