Chapter 136: Cast iron cannon

The next day, Wang Wei and his mighty fleet left Qingzhou Wharf.
Xiao Ming looked at Wei Wang's fleet with some envy, wondering when his Qingzhou City could have such a majestic fleet.
In the shipyard in Qingzhou, his Galen ship is still under intense construction. I only hope that by the end of the year, he will get three Galen ships as Zhang Liang said.
At that time, the artillery will be placed on the Galen ship. In this era of sailing warships, he has also taken a step into the sea.
But thinking of artillery, he suddenly grew his head again. The number of artillery needed on this battlefield was also a lot, and it was a heavy burden. From this point of view, training a powerful navy really requires constant smashing inside. Money.
Wang Wei was sent, and Xiao Ming went directly to the Department of Equipment.
At this time, Chen Qi was leading a craftsman to cast iron molds, and his brain was full of artillery casting methods.
Naturally, Xiao Ming would not take the detours that predecessors had taken. The method of casting guns he used this time was the iron mold casting method. This iron mold casting method has actually existed in ancient times.
However, it was adopted to cast artillery in the Qing Dynasty.
This method is actually not technically difficult, only the current craftsmen can't think of this method.
All sometimes rare is not technology, but discovery technology.
Now Xiao Ming has taught Chen Qi and others the complete iron mold casting technique. For these skilled craftsmen, it is only a matter of time to master the iron mold casting technique.
"His Royal Highness, we are now making mud cannon embryos." Chen Qi saw Xiao Ming coming, and immediately walked over.
The casting of the artillery made him sleep well for days and nights, thinking day and night about the method Xiao Ming taught him.
Artillery, the weapon that Xiao Ming spoke of, made him even more excited. As Xiao Ming said, if artillery were built, Chen Qi would be well-known in history.
But these days he led the craftsmen to try to forge the artillery, only to realize that the artillery manufacturing is not so simple, now only this artillery mold has failed several times.
Looking at the failed mud artillery embryo, Xiao Ming said, "Failed again?"
Chen Qi's expression was a little tired, and his face was ashamed, "His Royal Highness, at the beginning, the craftsman handed it, and this clay artillery embryo always failed to shape it. Now that I have become more skilled, I think it's almost the end this time."
Xiao Ming nodded, and looked at the craftsman who was making clay artillery embryos.
This iron mold cast gun must first be divided into 4-7 sections according to the size of the iron cannon to make clay guns, and then the iron mold clay molds are divided according to the number of clay gun sections. Each clay mold is divided into two parts, and the inner surface is spun with a car plate. Make the surface smooth and regular, and then dry for use.
A prefabricated handle is placed in the clay mold, which is integrated with the iron mold when pouring.
Next, when turning the iron mold with a mud type, first put the muzzle section upside down on the mud flat plate, fill one of the petals with mud, dry, cover the mud flat plate, clamp the mold tightly, and get the first part after pouring. A piece of an iron mold.
Then remove the filling mud and cast another iron mold in the same way. In this way, by pouring section by section, a complete set of iron molds can be cast into layers and tenon.
Finally, when using an iron mold to cast an iron cannon, first brush the inner surface of the mold with a paint made of fine rice husk ash and fine sand mud and water, and then apply a second layer of paint made from very fine coal powder, and then tighten the iron. Mold, heat, assemble the mud core, and pour molten iron. After solidification, immediately remove the iron mold. While the gun body is still red and hot, remove the burrs and remove the mud core to obtain the finished artillery.
But this time, in order to reduce the blasting rate of the artillery, he planned to replace the clay core with a hollow ceramic core, and inject water into the hollow ceramic core to cool the iron in the barrel.
This is also the native method of barrel cooling technology, only to reduce the rate of blasting and produce high-quality iron guns.
The blackmailing of other vassals was handed over to Zhan Xingchang. Now Xiao Ming has devoted himself to the equipment department, and Chen Qi is bound to produce this artillery.
This time the barbarians are going south, and the army will inevitably be dispatched. In order to prevent the barbarians from conquering Cangzhou, they can only rely on the city's strong artillery to make the barbarians panic and retreat.
After all, his artillery is not the fire tube of Dayu Kingdom, and the range of three to four miles is enough for the Barbarians to drink a pot.
As Chen Qi said, after a few days of failure, the craftsman has mastered some skills.
However, the artillery has not been cast, and the artillery casting specifications have been released. Xiao Ming divided the artillery into 6-pound, 9-pound, 12-pound, 18-pound, 24-pound, 32-pound, and 42-pound guns.
The artillery that Xiao Ming cast was used to defend the city. Naturally, he used heavy artillery, so he used an 18-pounder gun. The 32-pounder and 42-pounder gun belonged to a huge gun. It was not necessary at all. An eight-pounder gun is enough to be used as a naval gun.
And the higher the pound, the bigger and heavier the gun body, and handling itself is a problem.
In one day, in accordance with the design standard of the 18-pounder gun, the Equipment Department made half of the mud gun embryo, and the rest can only be continued tomorrow.
The clay cannon embryos are still cast iron molds, and it will take at least ten days before the cannon can be cast.
It has been ten days since the news of the barbarian going south, and it is estimated that it will take a month to produce the first cannon.
At this time, it was estimated that it was only about five months before the Barbarian went south, which was only his guess.
If the barbarian went south in advance, he would be really hard pressed.
Because of this, he didn't dare to take time off during this period of time, he didn't dare to delay after he was busy, and returned to the palace at night, thinking about how to granulate the gunpowder.
As we all know, the greater the power of gunpowder, the greater the power of the artillery.
Nowadays, the ratio of gunpowder in Dayu State is not very accurate in all aspects, but gunpowder is no secret.
The materials for the production of gunpowder are also easy to obtain.
After returning from the Department of Equipment, after dinner~EbookFREE.me~, Xiao Ming called Lu Tong over.
This gunpowder was a chemical matter, and naturally it had to be handed over to Lu Tong, and Luluo and Aster also came to lay hands. The five were in the side hall of the palace, surrounded by lanterns.
There were charcoal, saltpeter, sulphur, and a small scale in front of Xiao Ming. While weighing the three things, he instructed Lu Tongdao: "Crush these three things into powder. Be careful. This will explode. ."
Lu Tong's face turned pale, and his hands couldn't help but tremble. Since learning chemistry with Xiao Ming, he has understood that none of the chemistry studies can kill people.
Now Xiao Ming asked him to do something like gunpowder, which put him under a lot of pressure.
But thinking of the barbarian going south, he gritted his teeth. This is the hatred of the country and the family. In order to eliminate the barbarian, not to mention making gunpowder, he eats it raw.
Wang Lutong gritted his teeth and looked like he could not get through with the gunpowder materials. Xiao Ming was frightened. He said, "Be gentle, the finer the powder, the better. Don't use too much force. You want to kill the king.
(To be continued.) Enable new URL