The Firearms Bureau Casting Factory in Dongfan is actually a place with extremely tight protection.

A whole battalion of soldiers was stationed around the Jiangzuo Department, with guards and peripheral peasants, as well as personnel from the Military Information Department were responsible for inspection. If outsiders do not have the highest level of the Military Department's approval, even if they turn into flies, they will not be able to fly in.

When a group of Nanyang people and two tall Dutch people entered the artillery factory, two northern guests, accompanied by Fu Qian, had already started visiting the artillery factory.

Deng Wenjun and Lu Sihai are two generals under Wang Zhi, with a very special status. Even after Wang Zhi leaves office, one of the two will take over the position of Jiedu, which is Wang Zhi's successor.

The other person is probably the Jiedushi, the deputy of the Jiedushi.

Before coming to the East Vanguard, the two of them fought against each other. By the fifteenth year, the situation in the north became worse. Xu Zixian, the old friend, was able to give the title of king to open the mansion and even master the southern sea. Wang Zhi simply sent these two confidant generals to see what His Royal Highness Qin would do next, and then decide on the position and practices of Wang Zhi's troops in the north.

If Xu Zixian could clear the remnants of Yan Qi and Liu Dan, master the sea surface of many countries, and fight a real decisive battle with Pu Xingfeng, Wang Zhi's intention was of course to hope that his subordinates could participate.

The two pirates from the north enjoyed the climate of the East Phantom, especially the warm climate in the south. When they first went to the island, they wore thick cotton jackets, and leather jackets were also worn on the jackets. They were wearing bearskins. When they walked around, they looked like two black bears staggering.

It took less than a long time to go to the island, and people from the north were all sweating profusely, but they refused to take off their robes. They would rather wet their robes with sweat than to warm their bodies.

Deng Wenjun's face was a little depressed, but Lu Sihai was talking too much. He smiled at Fu Qian and said, "Brother Fu doesn't know. We spent a winter on Pi Island and Juehua Island. Later, the seaside freezing, and the boat really couldn't leave before we stopped... The cold land was frozen, and there was no other color except white. We were all frozen on the boat and on the shore, so we were shaking all over. Dengzhou was better, but we were all staying in Juehua and Pi Island, and we left the food transport to the young people..."

Fu Qian said in a deep voice: "What's the situation in the north?"

Deng Wenjun said: "The situation is very bad. We are not rivals of the Donghu people on the whistle and small-scale cavalry war. Now we are forced to build a city in Jinzhou and Yuhe. The imperial court wanted to build a city in Yuhe, and the least it was necessary to repair Jinzhou City. Military supplies and food were still sent from Pingzhou and Yuguan to outside the pass, but the war was delayed for half a year, and the soldiers were exhausted. According to Li Zhao's idea of ​​recruiting troops was to advance again in autumn and winter. At that time, the Donghu horses were exhausted and thin, and before the beginning of winter, it was also the time when the Hu cavalry had the weakest combat power... However, the imperial court seemed to be unable to wait."

The two people from the north were in a bad mood. Deng Wenjun and Lu Sihai were running in the snow for half a year. They watched with their own eyes that many military camps were erected in the barren land outside Yuguan. Then they watched Hu cavalry approaching. Many light cavalry battles broke out on the beach in the narrow Liaoxi Corridor. They saw the Donghu cavalry with bows and arrows chasing each other and fighting each other. They watched the knights fall from the horse or be cut off by long swords. In October, western Liaoning became winter and it was frozen. Many loyal and brave Han men, like barbarians, died in the snow after they were caught. Now, there are still many frozen zombies from the sea to the inland. Some soldiers' corpses were restrained, and a large number of zombies were left in the wild. Some Donghu corpses and war horses were dragged away in the wild. That was

As military rations were supplemented, human corpses were cut off, and the headless corpses were thrown in the wild, allowing wild dogs and crows to eat.

Such a scene was simply unimaginable in the warm and mellow Dongfan. Wang Zhi's fleet had been carrying the army's food transportation and stopped after the sea was frozen in winter. Wang Zhi also spent a lot of money on this, and the pirates under Wang Zhi also paid a lot. Originally, they did not have much deep feelings for the Great Wei or China, but at this moment they were completely different.

Even in Dongfan, there is an indelible worry between Deng Wenjun and Lu Sihai's eyebrows.

"This is our newly cast artillery." Fu Qian pointed to the many heavy artillery displayed in the yard of the Firearm Bureau, and his face was filled with pride. He said: "The crossbow machine and the catapult will be eliminated sooner or later. If the heavy artillery is cast properly, its power will no longer be inferior to the catapult machine and the heavy crossbow."

The small cannons created by Taizu of the Great Wei Dynasty were mostly made using the crafting method, and the crafting method was also called the forging method.

The first step in the creation method is to refine pig iron into mature iron. When refining pig iron, you must first choose high-quality raw materials and fuel. Then place the selected pig iron raw materials in the furnace to refine them, and cut the straw into fine, mix it with loess, and sprinkle it into the fire to make the iron shit come out. In this way, five or six fires are refined, then use loess and slurry, add straw, soak for one or two nights, then put the iron into the slurry, take it out after half a day and then refine. Each furnace must be refined to more than ten fires, and only one pound of pig iron is left to be considered to be refined.

The second step is to make the plate. Make the refined cooked iron into iron blocks, then divide the iron plate into eight pieces, and then make the small iron plate into tile patterns. Each iron tiles are one foot and four inches long, one foot and one inch wide, with thick middle and thin sides.

The third step is to roll the four iron tiles and roll them into one iron cylinder with a tire rod, and eight iron tiles are made into two iron cylinders.

The fourth step is to join. Cut the ends of the two iron cylinders neatly and use a few iron nails to combine the two iron cylinders into one.

The fifth step is to thicken the abdomen of the cannon body, charge the medicine, and the place where the fire is fire. Use thirty kilograms of iron into two pieces, make it into iron tiles, and surround it around the abdomen of the cannon and charge the medicine, thicken these places to make it strong.

The sixth step is to make the thick blank of the gun and lift it on the shelf. After it is put on the shelf, you must use ink wire to lift it without any deviation. Then use a steel drill to mill the chamber to make it bright and round, and even the ash in the chamber must be cleaned with medicine.

The seventh step is to install the fire door and file the photo door and guard door on the cannon.

In this way, a small cannon was successfully manufactured.

"The small cannon made by Taizu using the method of rolling iron is weak and can only kill a hundred steps. In terms of range and double-bow bed crossbow, not to mention a triple bed crossbow like the Eight Niu Crossbow." Fu Qian stroked the bronze cannon in front of him. This was a nine-jin cannon and was also an early product of the Dongfan Firearms Bureau. Even if it was an early product, its casting process and level were obviously beyond the small firearms cast by the Great Wei court before this.

"When cast iron becomes a cannon, no matter how we try, there are too many impurities, too thick and heavy gun barrel, and difficulty in moving." Fu Qian continued: "Later, we tried to cast guns with bronze. The casting process was much simpler, but if we wanted to assemble bronze guns on a large scale, our financial resources could not afford it, and it was too difficult to buy copper materials on a large scale. Later, we improved the mold and improved the cast iron process. Now we can finally produce iron cannons on a large scale... We cast guns with clay molding method, nine steps in front and back, from mold making to refining ingredients, to iron melting, heart, looking at the chamber, sing the mouth, rotating the chamber, drilling the fire door, and nine steps in front and back of a heavy cannon. It is complicated to say, but it is very simple if you do too much. The most important thing is

Iron quality, we did not solve the iron quality problem last fall. Two people from Dongfan Iron Mine Iron Field also went to see it. We used coke to make iron. There were not many impurities for making iron, but it could not be completely solved. Until later I had a new idea. To solve the iron quality problem of casting cannons, I am afraid that the furnace room temperature should still be solved... This is common sense. The higher the temperature of the molten iron in the furnace room, the less impurities. How to increase the furnace temperature? We also tried it many times, and finally found that the design of ventilation and air outlet was second, and the most important thing was to increase the blast furnace. The higher the blast furnace, the thicker the furnace wall, the higher the temperature, and the less iron impurities were produced. In addition, it was actually better than the sand-turning method of the Thais..."

Fu Qian talked freely and said that the two guests from Liaodong were already half dull.

However, although they could not understand the complex terms, Deng Wenjun and Lu Sihai could at least understand one thing. From then on, the navy of the Dongfan would gradually eliminate those bulky crossbows and catapults, and use more artillery.

This is also a general trend. In some things, King Xu Zi of Qin first used a more pragmatic approach. For example, the current Wei army is still an army dominated by cold weapons. Xu Zi did not intend to move towards hot, weapons, weapons, flintlock rifles and bayonets in one step, and Napoleon cannons are better. However, training, forming an army, making guns and casting cannons cannot be successful without thirty years of hard work. Even tactics and training alone will take a long time.

The current technical node should correspond to the 16th century. Europe was just at the junction of hot and cold. It was proof that the military formations that rely on the output of muskets were not formed, such as the Spanish phalanx.

At this time, we will move directly towards heat, weapons, and weapons, but we will cut off our arms. We will not make much profit, but the cost is huge.

The same is true for changing the Fu Ship Warship to the Thai Ship Warship. The technology, capital, personnel and time are not worth the cost. Therefore, the current government navy still focuses on building the Fu Ship Warship. As for the Tai Ship Warship, it still has to wait until the battle of Pu Xingfeng, digest the Nanyang trade, and eliminate all the pirates, it may take decades to gradually eliminate the Fu Ship Warship and change to building the Thai Ship Warship.

As for artillery, because the Taizu of the Great Wei Dynasty was the foundation, as long as the craft was slightly improved, it would be much more suitable for use than the crossbow.

A three-bow Eight-Cow Crossbow requires up to a hundred people, at least seventy or eighty people. The power of the cannon is slightly worse. The accuracy and range of the cannons in this era are worse than bed crossbows, but four to six gun crew members, up to ten people is enough.

The manpower saved alone is worth replacing the crossbow and catapult with cannons!

Most of the artillery in front of us are ten-pound cannons, which is the twelve-pound cannons from Thailand. Europeans used the sand-turning method to cast cannons. The earliest record of sand-turning casting was in the Song Dynasty of my country, but the earliest unearthed cultural relics could be found in the Northern and Southern Dynasties. It was not until the fifteenth century that sand-turning casting was carried out, and the Arabs mastered sand-turning casting in the twelfth century. It is not ruled out that the Arabs spread sand-turning casting technology to Europe.

"In terms of technology, it is no worse than those of Tianfang people and Taixi people." Deng Wenjun stroked the cast iron cannon body and felt the smooth cannon body. When he saw the rifle after polishing, he said heartily: "We have been at sea for many years, from everyone using corner rushing and trenching machines to Tianfang people and Taixi people starting to use cannons. In a flash, it took less than twenty years. Now the navy of the Great Wei has also begun to cast cannons. In another twenty years, I don't know what the situation at sea will be like."
Chapter completed!