When everyone thought about it, this was indeed the truth. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 infoGuangdong is a developed area of the national iron-making industry, but there is no iron-making workshop so bold to smelt thousands of catties of pig iron, and the wrought iron smelted is generally used by the government to make bird guns, and the daily agricultural tools and iron are still pig iron, so even if you go to Guangdong with this process method, it is also a "dragon-slaying technique", which is useless. In addition, the wages here are more generous than those in Guangdong, and if you steal the teacher here and return to Guangdong, you will pick sesame seeds and lose watermelons.

The craftsman who reminded Lin Weiye just now took the lead in responding: "What the owner said is right, this method of iron-making was conceived by the owner, let's take the wages to do things, just do our duty, don't think about those who don't have it." ”

Xia Nan saw that this person was very good, so he asked, "Are you from Guangdong?" What is your name? ”

This person hurriedly responded: "The little one's name is Zhang Wei, a native of Guangdong, who has been working in the ironmaking workshop since he was a child and has been doing it for 30 years. "He has been immersed in this industry for many years, and his seniority is very old, and this group of craftsmen is faintly headed by him.

"Very good, Master Lin doesn't have time to stay here every day, and you will be in charge of ironmaking for the time being. Well done, I'll be in charge of you in the future. ”

Zhang Wei didn't expect such a good thing to fall on his head, and he got a foreman before the ironworks opened, and immediately agreed without a word.

After successfully refining mild steel, the next step was to make muskets. The musket has always been a dream thing after the summer crossing to the south, with a gun, in order to compete with all kinds of potential enemies, the wooden pole iron head gun obviously does not have a musket to make people confident.

At present, the stall is so big, it all depends on the remote geographical location of Qiongzhou, the emperor is far away, and the Lingao County Ya has been fed with silver by himself, and no one cares about it for the time being, so that all projects can be promoted at the same time. In the inland, let alone iron-making and shipbuilding, and opening a large-scale textile factory will be targeted by the government, even if you are uneasy to insert the crime of gathering people, all kinds of extortion, skinning and sucking marrow are inevitable, not to mention making guns and casting cannons, and they will be arrested and beheaded by the government as a rebel. But security is only temporary, and only with weapons can the development of the cause be guaranteed.

After the Bairentan Iron and Steel Plant, the construction of the Bairentan Arsenal began, and because all localities had to carry out infrastructure construction, the factory building of the arsenal could only build a few board houses to make do with it, and then build a large-scale factory building when the manpower was freed.

The iron-making expert has been transformed into an arms expert -- Lin Weiye, a veteran military fan, is about to verify his success, and Xia Nan personally visited the scene.

Blacksmiths and apprentices are brought together for on-the-spot teaching, and a group of master-apprentice combinations recognized as the best in skill are selected to try out the firecrackers. The blacksmith who was picked out was surnamed Wang, and no one else remembered his name, but remembered that he was called Wang Yihammer, because the skill of hammering ironware was superb, so he had this nickname. He took a few apprentices, according to Lin Weiye's instructions, to first build the gun tube, then make other parts of the gun body, and finally assemble it.

The first step is to make the tube. Prepare a cylindrical steel core to make cold bones, first burn the wrought iron to make the gun pipe until it is red-hot, then take out the blank, use a hammer to knock the red-hot wrought iron outside the steel core, and roll it into an iron pipe. And in the process of cladding iron, the steel core is constantly extracted and cooled with water to prevent the steel core and wrought iron from being welded together. The thickness of the rolled iron pipe should also be about one centimeter. Wang Yihammer is very skilled in this step, and he has also been dispatched to make bird guns for Guangdong officers and soldiers, and this process is familiar.

If you follow the Ming army's method of making bird guns, the second step is welding.

The Ming Dynasty lacked knowledge of ballistics, and believed that the longer the bird gun, the more powerful it was, so that in order to increase the length, the bird gun body was rolled into a single tube, and then welded section by section, which developed to the later Manchu Qing Dynasty's lifting gun, and the barrel was even as long as two meters. Pipes made by this welding method are easy to blow up and bor, and craftsmen regard whether or not they are welded seamlessly as the key to the success or failure of guns.

In the middle and late Ming Dynasty, the craftsmen of the Ming army took tricks and caused many accidents. It is recorded in the "New Book of Ji Xiao": "Recently, I have learned that there are few people who are sick and suffering, and they do not complain and instruct the craftsmen to listen to them roll into iron cylinders, uneven thickness and thickness, and even single cylinders are rolled up, and they are damaged by explosions." "The easier it is to explode, the more reluctant the soldiers are to use it, so that the Ming Dynasty has produced a total of tens of thousands of bird guns, but very few of them are actually equipped for actual combat, and the most elite Guanning iron cavalry still uses the original three-eyed guns.

The method instructed by Lin Weiye is a completely different double-layer composite gun, which is different from the single-barrel welding method, which is wrapped with red iron on the steel core, and when the first layer of iron is wrapped, another layer is wrapped on this layer of gun, so that the joint of the inner gun is wrapped by the outer layer of gunmetal to form a composite body.

From a technical point of view, the double-layer composite gun is more scientific than the single-barrel welded gun, and the body joint is stronger, although this kind of gun tube can not make a very long bird gun tube, but the caliber can be made larger than the first bird gun, so the power is also greater in a limited distance.

The blueprint that Lin Weiye referred to was the standard musket of the British Army's domination of the global colonies - the brown bess flintlock pistol, which was shorter, less material, low cost, and easy to produce in large quantities. The only difference is that it uses a double-layer composite body, while the original brown besil is a single-cylinder roll, considering that the quality of iron ore in China is not as good as that of the West, the smelting technology is not as good as that of the 18th and 19th centuries, and there is no need to pursue cost control as much as in the UK, so this change was made.

In the process of building the pipe, Wang Yihammer thought that the short pipe was not as far as the long pipe according to his previous experience, but the owner said so, and he did so.

The third step is the same at home and abroad, which is to trim the inner chamber. At this time, the barrel is still coarse, and the core is not straight, and the inside of the chamber is also rough and uneven, in addition to polishing the outside of the tube body smooth, the most important thing is to use a drill bit to drill the barrel and drill the big drill smooth.

In the Ming Dynasty, the general drill bits are made of fallen steel, the rigidity is not very hard, and it is an artificial drill, so half of the time to make bird guns is in the drill chamber, only one inch can be drilled every day, and the time can be as long as a month. "Ji Xiao Xinshu" recorded: "(Bird) the original hole is very small, drill it with a steel drill, drill an inch a day, until the end, and drill light in January." ”

In Lin Weiye's view, the low production efficiency of the Ming Army's bird gun is outrageous. There are two ways to solve the problem, one is to improve the drill bit, and the other is to change the drilling method.

The tool steel of the drill bit is very easy to solve, and the tool steel can be made much harder than the crash steel by the crucible steelmaking method, this method was first applied by the Englishman Hunzman in 1742, he cut the carburized iron into small pieces and placed them in a closed clay crucible, heated outside the crucible, and the iron continued to absorb the carbon in the graphite and melted into high-carbon molten steel, which was cast into a small ingot and then forged into the desired shape. When the steel is melted in the crucible, graphitic carbon can also play the role of a reducing agent, the oxygen in the steel can be removed, and various inclusions can also be removed from the liquid steel, so the quality of steel is better than that of various metal materials at that time, and it can be used to make tools for processing metal materials.

The crucible method was the first method of producing liquid steel in human history, but the production volume was extremely small and the cost was high. For Lin Weiye, who only needs tool steel, this disadvantage is not a problem, anyway, there is no need for mass production, as long as there is a harder steel than the falling steel to make a drill bit, in the future, it can be used to boring the inner chamber of the cannon, and the tool steel can also be obtained by this method.