Chapter 94: Steelmaking and the Pot Camel Machine
86_86695 If it were simple, just give a bunch of drawings and numbers to the craftsmen of ancient times who did not have any knowledge base, and let them create a modern industrial product. In general, this kind of thing is impossible to succeed. However, if the physical objects and specific operation processes, installation processes, and related drawings and numbers of one or several industrial products are handed over to ancient craftsmen for retrograde inference and imitation, the success rate is very high.
Chinese not only rank first in the world in terms of ability to create human civilization, but also produce many key inventions that promote the development of human civilization. Moreover, the Chinese's imitation ability is definitely the first in the world.
Wang Shuhui grew up in the arsenal, and what he heard most from those seventy or eighty-year-old men was how their group of semi-literate workers, who had just received literacy education, disassembled Lao Maozi's various weapons and ammunition and then imitated similar products. Wang Shuhui believes that the craftsmen under his command also have such ability.
In the past six months or so, Wang Shuhui has asked the members of the Iron and Steel Group of the Industrial Committee and some external blacksmiths to lead the newly recruited groups of workers to build several earthen blast furnaces by themselves for skilled work. Wang Shuhui himself, on the other hand, led the technicians who had been born in the original training camp and had received basic education and training, and successively established three small blast furnaces in the Jiangbei Village Industrial Base.
After that, the Iron and Steel Working Group of the Industrial Committee organized technicians trained by the technical training school and the technicians who participated in the construction of the first three small blast furnaces to independently build five small blast furnaces. At this point, the Industrial Committee of the Revival Society basically mastered the construction method and operation process of the ironmaking blast furnace. Achieved an average daily production of 50 tons of iron.
Of course, the small blast furnaces originally transported by Wang Shuhui from modern times, according to the design output of each one, should easily exceed 100 tons per day. However, a total of eight small blast furnaces of modern technology, operated by half-bottle water technicians and literate workers, can only produce one-sixteenth of the designed output. Moreover, various accidents and casualties are still emerging one after another. Hu Guohua, a representative of the Industrial Committee, broke a leg at work and can now only work on crutches.
In September 1620, Wang Shuhui decided to make full use of the resources in his hands and began to carry out the mass production of pot camel machines in the late Ming Dynasty according to the advice of modern thinkers. The increasingly stable production of iron-making blast furnaces and thousands of workers and technicians who have basically mastered the use of modern lathes have provided Wang Shuhui with sufficient confidence for the mass production of pot camel machines.
However, Wang Shuhui checked the information and found that he was facing such a problem. If you want to produce pots and camels in batches, you must be able to produce steel in batches, and if you want to produce steel in batches, you must let these workers who have just basically mastered the ironmaking technology of small blast furnaces further master the technology of steelmaking.
For the Chinese, before the development of modern industry, China had the highest level of steelmaking technology in the world.
In the book "Heavenly Creations", which was written in 1637, it has completely recorded the absolute, world-leading steel smelting process at that time. Its production level has reached the point of large-scale, mass production, and continuous production of raw wrought iron. The specific production process is to connect the iron-making furnace and the iron-frying furnace in series, so that the molten pig iron smelted by the iron-making furnace flows into the iron-frying furnace, and is stirred with willow sticks to oxidize the carbon in the molten pig iron and mature the iron. This continuous production process has begun to have the systematic idea of combined production. This production process increases productivity and reduces energy consumption.
To put it simply, the conventional iron-making method can only smelt raw iron. Then the pig iron is forged and decarburized, or the wrought iron is heated and carburized into steel (i.e., the steel filling method). This requires two heat-ups. However, during the Ming Dynasty, China invented the frying method, which did not need to be cooled and reheated to produce steel, reducing fuel consumption and greatly increasing production.
The iron-frying furnace described in "Heavenly Creations" is actually a churning furnace invented by Europeans in the second half of the 18th century. The difference is that European smelting furnaces usually use wrought iron rods or steel rods to burn the carbon in the pig iron and finally obtain low-carbon wrought iron. In China, willow sticks are used to stir, and the willow sticks are gradually burned off while stirring, which can mix carbon into the pig iron, or reduce the rate of decarbonization of the pig iron.
Through this step, skilled steelworkers can easily control the ingredients, and can directly fry steel with a carbon content lower than pig iron but higher than wrought iron, and even have the opportunity to fry medium carbon steel and high carbon steel. This process method is frying steel.
The only problem is that although the European smelting furnace was invented later, it has continued to develop for more than a hundred years. Since the Qing Dynasty, China's steel production technology has not only not developed much in the past few hundred years, but has regressed significantly.
However, there are obvious differences between the ancient steel industry and the modern steel industry. The scale of the modern steel industry is enormous. From the perspective of steelmaking alone, in order to make steel, not only a large amount of raw materials such as pig iron scrap is required, but also a large amount of coke is required, and it is necessary to produce oxygen that can be continuously blown into the steelmaking furnace in batches.
Under such circumstances, Wang Shuhui needed to teach the workers not only how to use the steelmaking equipment brought from modern times, but also how to use modern industrial methods to make coking and produce oxygen. As a result, the workers, who seem to be basically qualified, have become less knowledgeable.
Wang Shuhui didn't have any good ideas, and after the ironworks began to produce on a large scale, those workers were already seriously insufficient. If he wants to build a steel mill, Wang Shuhui can only train new workers and technicians. Fortunately, Sima Feng continues to provide Wang Shuhui with thousands of newcomers every month. After entering the town, these newcomers have been given basic military training and cultural literacy education under the supervision of the instructors and instructors of the Fuxing Army.
Wang Shuhui selected more than 1,000 young people who were young, in good health, and who studied quickly from among the more than 3,000 newcomers to form the Production and Construction Corps. Soldiers of the Production and Construction Corps only need to undergo basic training in the queue and complex fitness every day. The rest of the time they spend their time in industrial engineering education at technical training schools. Here, while learning technical knowledge, they practice related techniques through the equipment and materials provided by Wang Shuhui.
By the end of 1620, the first cadets of the Production and Construction Corps had mastered the technology of steelmaking using small Martin furnaces. The price paid for learning this technique was that for the first time, a single industrial project under the Revival Society had an industrial accident with a death toll of more than three digits. Of the more than 1,000 soldiers of the Production and Construction Corps, there are less than 800 left after mastering the technology of Martin furnace steelmaking.
At this point, several iron-making masters in Foshan who had been studying with Wang Shuhui were completely convinced. Until then, they thought that blast furnace ironmaking was impressive, but the output was amazing. However, they felt that blast furnace ironmaking was just a larger equipment for ironmaking and a larger scale for ironworks. Technically, they only considered blast furnace ironmaking to be an improvement over their original production process. In their opinion, as long as there are enough people, they can do it.
However, when they saw that the crimson molten steel had turned into billets in a small effort, and that steel parts and plates of various shapes and uses were being produced in the foundry of the steel mill, they were completely convinced.
These people were originally quite arrogant. Because they have the stunt of frying steel in their hands. They never came up with the idea that they could be tempered into molten steel and processed directly. Even if someone thought about this idea, it would not be possible to melt the steel into molten steel under the conditions of open furnace steelmaking.
In fact, Wang Shuhui himself did not pay attention to the eight small blast furnaces of forty or fifty cubic meters. In modern society, those are extremely backward things that have long been eliminated in large numbers. Wang Shuhui bought nearly 20 small blast furnaces of forty or fifty cubic meters, each of which cost less than 1,000 yuan.
There is no place to sell small steelmaking martin furnaces for teaching and practicing students. Modern small steelmaking furnaces are all electric. Wang Shuhui wanted the kind of technologically backward, proportionally reduced version of the equipment of the steelmaking furnace at the level of the Hanyang Iron Works, which could only be customized by the relevant production enterprises. Those small Martin furnaces cost Wang Shuhui a lot of money.
The coke plant was launched by the local method. In the last years of the Ming Dynasty, there was no problem of environmental protection, but the problem of insufficient industrialization. Therefore, Wang Shuhui did not get the kind of high-end coking equipment that he put on the horse, nor did he hand over the coking process to technicians and workers, which was quite complicated for them. Instead, he directly led the construction corps to carry out the work of soil coking.
The so-called soil method coking, in fact, the brick kiln workers of the Ming Dynasty could do this. Because of environmental protection issues, local coking is strictly prohibited in modern China, but in fact it is still everywhere. The specific method is to manually ignite the coking coal stacked in the kiln with the help of the ignition hole on the side wall of the kiln under the condition that the air is not isolated in the kiln, and the coal is heated layer by layer (direct heating part) by the combustion heat of the coking coal itself.
The hot gas flow formed by the exhaust gas generated by coal combustion and the unburned large amount of coal cracking products continues to burn through the fuse channel on the side wall of the kiln chamber, and part of the heat is transferred into the kiln (indirect heating part). The high-temperature gas stream (800C) is discharged into the atmosphere with unburned coal crackers, chemical products. This process lasts between eight and eleven days, and the coke matures.
To put it simply, the coal that can be used for coking is simply washed and stacked in a rectangular pool, and the top and bottom of the pool are sealed with refractory bricks around the pool, and then ignited, and after a period of time, all the gas is burned out, and it is no longer smoking, and it is made into coke.
From October 1620 to March 1621. With nearly 500 dead and more than 100 disabled, Wang Shuhui finally built a small steelmaking plant in the Jiangbei Village Industrial Base. The small steelmaking plant has a steady daily output of around five to eight tons.
At this time, Wang Shuhui's prerequisites for mass production of pot camel machines were finally reached. Practical steam engines from the local factories of the Ming Dynasty were about to be put into production