Cheng Pan watched them participate in a series of quality inspections in front of a newly completed steel. This batch of steel formed molten iron from the furnace, and then carried out hot rolling of giant presses through four steam engines. After more than a dozen steps such as quenching and tempering, all operated under Cheng Pan's perception. Cheng Pan focused on understanding the number of bubbles in the steel, the generation of cracks under degeneration, and the amount of impurities inside. Of course, there are also those that Cheng Pan could not cheat with a super-sensory feeling, such as the content of phosphorus sulfate substances in the steel. Each process has undergone repeated experiments and continuous subtle changes of conditions. The road of steel is like a long-distance marathon. Cheng Pan's cheating is just a bicycle to replace running, and the journey is still long. But after several months of exploration, the quality of steel is improved bit by bit.

But soon, a message that made Cheng Pan extremely excited and mixed with a hint of helplessness came. Cheng Pan found that his biggest golden finger farming in this era was not his superpower.

Cheng Pan didn't know what kind of power the number of junior high school students could produce in this era before. Cheng Pan's experience from the qualified product under the China-Chiang's large-scale industrial production model represents the status of the 21st century science students. High scores and low energy are labels they were labeled by the outside world. Speaking of which, Chinese students have been learning their theoretical knowledge before entering society, and this knowledge has never been useful. Cheng Pan is the same. He just understands the knowledge he has learned and has made some small derivatives. The specific production links are still explored by himself. Cheng Pan teaches a lot of teenagers in the territory, but he has heard from history that Prussia rose like this. As for what the use of this knowledge, Cheng Pan just feels that he has more workers with energy production.

But tens of thousands of curious teenagers were brought into this new field of knowledge by Cheng Pan to fully utilize their curious baby nature, and their creativity provided rocket-like power for Cheng Pan's productivity explosion.

Cai Gang is the son of Master Cai, the director of the No. 2 Iron and Steel Plant. Since Master Cai and Master Zeng separate to manage a steel plant, the two have been comparing with each other. Because Cheng Pan was doing experiments at Master Zeng’s No. 1 steel plant, Master Cai felt that he had "fallen out of favor" and had no good eyes on Master Zeng. At the same time, Master Zeng was also resentful of Master Cai’s pulling away the elite soldiers and generals in the No. 1 steel plant.

Not to mention the grudges between the two, Cai Gang has always been interested in steel under his father's tutoring. After the speech on Zhengtong Avenue in Jingcheng Pan, he was full of pride in being born in a steel family. After graduating from the junior high school chemistry exam, he took some classmates from his class to work at his father's steel factory. Due to the strict rules set by Cheng Pan and the good tutoring of Master Cai, Cai Gang did not receive special care and participated in basic work. When working, Cai Gang found that the iron plant's pig iron production was high but the output of Gang was too low. Traditionally, the traditional irrigation of Gang and scattering Gang consumed a lot of turbines and steam engines.

In Cheng Pan's chemistry book, it was explained that pig iron only has a higher carbon content than Gang. Cai Gang became resentful of a large amount of pig iron in his steel mill. As soon as a pot was mixed with some carbon, the quality and price were greatly reduced. It was necessary to neutralize it with cooked iron. Crafted iron needs to be repeatedly forged and decarbonized. Is there a way to quickly decarbonize? Cai Gang and his classmates began to study it. Master Cai knew that his son was preparing to tinker with the experiment and adopted an attitude of approval. Because Cheng Pan was doing the experiment with Master Zeng, Master Cai was a little emotional.

The last plan that Cai Gang and his team thought of was to make a large column crucible, directly pour the blast furnace molten iron, open several small openings from the bottom of the crucible with a blower driven by a steam engine and a water turbine to blow in hot air, and at the same time, use a mechanically driven iron rod to stir the iron liquid continuously, so that the oxygen and iron liquid in the air can be fully contacted and reacted with carbon before cooling.

Master Cai pointed out the disadvantages of this solution. You must always pay attention to the temperature when stirring. This method is prone to the problem of iron liquid solidification and inability to pour out in the crucible.

The experiment started soon. This was the Double Ninth Festival in 1343 AD. History should remember this day. When a furnace of iron was entered into a special crucible, the blower and a ceramic stirring rod for cooked iron began to stir. Unlike everyone who imagined that the temperature of the iron liquid decreased, a violent reaction occurred after the hot air flowed in. The temperature of the iron increased instead of falling, and it kept sputtering the iron liquid like boiling. The two people were caught off guard by the flying iron droplets. Fortunately, they were wearing special protective clothing.

However, it's not as simple as minor injuries. Master Cai shouted loudly, "Get back, retreat, all the blower should not stop. Lift the stirring rod for me, and it will melt if it doesn't lift it up." Master Cai's face turned red when he issued the order, and his hands were trembling excitedly. With his years of experience, the temperature change in the furnace at this time cannot be hidden from him. As an old blacksmith, he also read the knowledge about steel in the process of chemistry books, knowing that at such a high temperature, it must be carbon and oxygen.

Release heat. In fact, it is not just carbon that exudes heat in the furnace. A large amount of silicon and other substances are oxidized and brown smoke comes out from the top of the furnace. Master Cai knew that they had discovered a relaxed decarbonization method. As the reaction calmed down, Master Cai ordered: "Dump the iron". The furnace rotated and poured out the metal liquid inclinedly. After quenching and cooling, everyone couldn't wait to test their products. Master Cai kept hitting the newly released metal blocks with a hammer that had been prepared. After

He repeatedly beat it. Then he stopped and said in a wandering tone: "Steel, we have made a furnace of steel." After saying this, he couldn't help laughing and tears flowed in his eyes. He had been fighting iron for the rest of his life. Today he realized that steel could be made. After waiting for Master Cai's authoritative verification in tact, the people around him began to cheer. Some hugged each other, and some threw out their safety helmets. Soon the whole atmosphere of steel was infected.

The steelmaking method invented by Cai Gang in Cheng Pan was exactly the same in the original space-time of Cheng Pan, invented by the British Bessemai in 1855. This is a milestone in the world of steel smelting and marks the watershed of modern steel technology. This method reduces the cost of steel making seven times at once.

Compared with the steel made by Bessemai using this method, Cai Gang's product quality was even better at this time. Because the converter steelmaking was just used at that time, it was still impossible to solve the acidic substances such as phosphorus and sulfur in the furnace, Cheng Pan had long known from the high school chemistry books that the addition of calcium carbonate and acid-base methods in blast furnaces. Cheng Pan's steelmaking technology tree suddenly rose in the early 1880s, of course, it was only steelmaking technology, steel processing and the formulation of various alloy steels.

After this method appeared, Cheng Pan quickly came to the No. 2 Steel Plant. He observed this method of steelmaking throughout the whole process. He found that he had developed. At the same time, he felt that he had been in the No. 1 Steel Plant for several months. Cheng Pan has been studying how to process high-quality steel by pouring steel, but now he has found that steelmaking is so simple. Cheng Pan feels that he has been hitting in the dead end in the past few months. This feeling is that when he was a student, he was busy dealing with summer homework. He lay on the table for several hours and wrote more than a dozen pages of drafts. Suddenly he found that there were reference answers later.

Cai Gang quickly applied for a patent for this method under the auspices of Cheng Pan. In order to give his father a little glory, he did not name the Cai steelmaking method but changed it to Xiao Cai steelmaking method. Master Cai ran to the No. 1 steel factory to show off for a while. Master Zeng kept saying that he was sick and avoided him.

With the factory delivery of a large number of qualified steel, Chengpan finally has enough steel to make steam engines. The original piston problem has also been overcome. It is to slot the iron piston and use softer iron to make the piston ring. When the piston moves, it will be worn with the cylinder liner until it is appropriate. This process is called running-in. Because the piston ring is softer than the cylinder liner, it is much more worn. It takes a period of time to disassemble the piston for inspection. If the piston ring wears more than the indicator, it must be replaced. Generally, three to five grooves are opened on the piston, and each groove is equipped with a ring. Although it still requires a lot of manpower to process, Chengpan finally has it.

It is a high-quality steam engine that can be installed on the hull. Of course, it takes a series of skills to install the steam engine on the ship, so it depends on the shipbuilding technology in Chengpan's territory. It is better to build the fly-scissors honestly. As for the steam engine technology now, the steam tractor is finally not a face-saving project. It produces ten steam tractors a month, saving a large amount of rural population. A large number of immigrants from other places began to be trained to work in factories. At the same time, qualified steam engines began to be used in large quantities, and since the winter of 1343, Chengpan began to move towards the steam era.

Not only is a breakthrough in steel, a junior high school student from chemistry, Shen Cheng gave Cheng Pan a great effort. Shen Cheng was in charge of nitric acid in the chemical group. However, it has always been scarce as raw materials. Shen Cheng came from the stinky stinky plant. Through several years of development, the cultivation of nitrifying bacteria has almost been almost done. Saltpeter comes from the decomposition of proteins in animals. Protein in the territory is scarce, so Cheng Pan cannot use meat as raw materials. One day Shen Cheng found that the yield of saltpeter in a manure pile has always been very large. He began to investigate and found that the manure pile came from fishermen by the river. These fishermen cleared the fish's internal organs and threw them into the cesspool. So Shen Cheng found a good raw material for accumulated nitrification, aquatic animals that fishermen don't want. Through experiments, Shen Cheng finally successfully experimented with the method of accumulation of nitrification in the nitrogen field, which was to grind a large number of fish's internal organs into slurry and feces with steam engines.

The ash was evenly spread in a piece of land. Cheng Pan participated in the experiment with his nitrogen field throughout the whole process. With the blurred images of the original time and space Dongningji and the slightest research experience of the nitrate workers on the habits of nitrate bacteria, the site was set. After several failures, one of which was that the accumulation of nitrate was stopped to a very small extent and no matter what measures were taken, the nitrate bacteria seemed to have disappeared. Later, the ph test paper detected in the litmus lichen found that the acidity of the nitrogen field was too high. So sprayed with trace amounts of alkali to neutralize this problem. Now the technology is basically mature, and a monthly yield of at least 700 kilograms of nitrate in a mu of land in the hottest months. The side effect is that the fishermen in the Yangtze River have begun to fish out all the big fish, small fish and shrimps. Anyway, they can't eat them and sell them to the nitrogen factory.

With nitrates, the chemical group began to frantically start to use large lead reaction dishes, and a large amount of sulfur oxides produced by calcined pyrite mined in a small mine in Ma'anshan made concentrated sulfuric acid. In the lead reaction dishes, the concentrated sulfuric acid and nitrate were heated in the outside of the warm water to produce nitric acid through the condenser. With nitric acid, batches of picric acid were produced, transformed into the combat power of Chengpan's army and the productivity of ore.

After joining all walks of life in the territory, ten thousand junior high school students began to emerge. They used practical actions to tell Cheng Pan what the knowledge he learned in high school was of use. This group of senior talents in this era will gradually interpret the power of industry.
Chapter completed!