Naoxiu was "cautiously punished" in Jiushan, but he was okay with his normal life.

Mr. Egawa Tanan, who was in charge of Naohide, was now the deputy of Kanjo Ginmi, who was in charge of the shogunate's finances, and was usually busy with affairs, so he only returned from Edo once in a hurry, comforted Naohide for a while, and instructed his son Eitoshi to take good care of Naohide.

The so-called "prudent punishment" is similar to thinking behind closed doors, that is, you can't meet guests casually, you can't walk around in public, and you can't participate in political affairs, but with the connivance of Egawa Yingmin, Naohide can still do something in Nirayama.

In the early days, Naohide and Youngmin were a little dirty, because Naohide was said by Mr. Tanan to be "someone else's child", but as Youngmin grew older, he gradually understood his father's embarrassment of being isolated in the shogunate, so he gradually recognized Naohide who could help his father.

Egawa Youngtoshi has been studying orchid with his father since he was a child, and is currently improving the refining furnace in Nirayama, although there are many Lan scholars in his own rope martial arts hall, but because he has no access to the latest Western theories, his progress is still slow.

Fuso's iron-making technology was greatly influenced by China, but I don't know why, Fuso did not get China's shaft furnace iron-making technology, and it has always been a block of iron.

The so-called block ironmaking is the name corresponding to cast iron, and the simple point of Fuso's block ironmaking process is that charcoal and iron ore are placed layer by layer and then calcined together, and the smelted iron is iron (sponge iron) and milled iron (white iron), because the burned iron is presented as a solid block, so it is called "block iron". Of course, the name in Fuso is not the block iron-smelting method, but the method of squeezing and milling, and it is commonly known as "Tatara iron-making" - the tatara is the name given to the treadmill by Fuso.

The quality of the block iron smelting is uneven, and the resulting material needs to be carefully separated, and the part with few impurities can only be used after a large amount of forging.

The melting point of pure iron is 1535 °C, and the tatartar iron is a low-temperature iron-making, and basically no steel can be obtained, and the usual "jade steel" is actually pig iron with fewer impurities.

The efficiency ratio of iron production in Tatahara was extremely poor, and only 1.5-1.8 tons of iron could be obtained by investing 8 tons of sand iron and 13 tons of charcoal, and the quality of these irons was uneven, so the iron production in the Edo period was very small, and there was a reason why samurai swords were extremely expensive and farmers used agricultural tools wrapped in iron sheets.

Before Naohide secretly went to sea, the Saga Domain and the Shogunate Nirayama Prefecture had already begun experiments with churning furnaces, that is, they began to experiment with the iron casting process, but the process of the two was very different.

The Saga clan still followed the path of Western reverberatory furnaces, smelting iron ore through horseshoe flame kilns, coke, refractory brick melting pools, and bellows driven by windmills, and at the same time oxidizing silicon and carbon in cast iron by stirring them with long iron rods protruding from the roof of the kiln. Although there is a regenerative chamber provided by Naohide to help heat up, the overall temperature of the flame kiln is not high enough, and the probability of success is very small.

Unlike the Saga Domain, which was independently developed, Nirayama received the small blast furnace process given by Naohide, where iron was first made from a blast furnace, and then pig iron was poured into a churning furnace for secondary refining. Although the chances of success are also very small, they are still better than the craftsmanship of the Saga Domain.

At this time, there were two ways of smelting iron in Western countries, one was a blast furnace and the other was a reverberatory furnace.

The blast furnace was limited by the process at that time, and did not show higher efficiency than the reverberatory furnace at that time. Blast furnace ironmaking developed rapidly after the invention of the regenerator, the gas combustion engine and the steam turbine blower, which happened in the middle and late nineteenth century.

And the opposite

The maturation of the furnace came relatively early, and in 1766 Henry of England? Cotter invented the churning method, and in 1784 he used it in a reverberatory furnace, which greatly improved the quality of cast iron, and in 1816 Joseph? Hall also improved the process of the reverberatory furnace, so that the reverberatory furnace was basically mature, and it became an important way of Western ironmaking.

There are also those that use a blast furnace to smelt iron and then use a reverberatory furnace to smelt iron.

However, the temperature of the reverberatory furnace can only reach 1400 °C, and the melting point of pure iron is 1535 °C, so steelmaking at this time is still metaphysics, and it was not until 1856 that the English Besmarck invented the bottom-blowing acid converter steelmaking method, and mankind officially entered the steel age.

With the support of Mr. Vanderbilt, he established the Carnegie Steel Company, played the small blast furnace and reverberatory furnace thoroughly, and also took out the converter steelmaking method in advance, and made a lot of money in the United States - but the bulk of the income is still Mr. Vanderbilt's, after all, the United States is still the era when big businessmen are evaporating from each other, and Zhixiu is still very knowledgeable about this.

Under the influence of Naohide, Egawa Hidetoshi obtained the two steam engines brought back by Naohide through his father - after all, the blast furnace ironmaking in Nirayama had already made some achievements and attracted the attention of the shogunate.

Zhixiu replaced the windmill blower with a steam engine blower, and after experiencing accidents such as the collapse of the original small blast furnace, a mature blast furnace was finally built, with a diameter of about 6 meters at the bottom of the furnace and a height of about 13.5 meters, with a daily output of nearly 100 tons of pig iron, equivalent to 27 weights at this time, and at this time, the largest return ship only carried 1,500 stones, and the amount of pig iron in two days needed a return ship to transport.

At the same time, two reverberatory furnaces were built, and the quality of cast iron produced was completely comparable to that of Nanban Iron, and the Nirayama Iron Works also began to imitate Western iron cannons and large cylinders with the machine tools brought back by Naohide.

As for the imitation machine tool, according to Naoxiu, cast iron needs to be buried in the ground for a year or two, and it has not yet been scheduled.

After the blast furnace ignited the iron, Mr. Tan'an burst into tears, after all, he pressed his future on it - the mobilization of black lead (graphite) was not easy, and the mobilization of large quantities of coal and southern iron sand aroused the attention of the government and the opposition, and he insisted on letting Naohide "treat the crime and make meritorious service" to participate in this matter, this year basically consumed all the favors accumulated by the Egawa family over the years, after the collapse of the small blast furnace in the middle, Egawa in Edo Castle can not be said to be everyone shouting and beating, but it is also difficult, he can no longer stay in Edo Castle, said that he was sick and ran back to Jiushan every day to be busy with Naoxiu.

Naoxiu doesn't know what went wrong, according to the experience of his previous life, the Nirayama reverberatory furnace has been engaged in for seven years, and Mr. Egawa Tanan died of illness in the fifth year, and now it has only been less than a year, why is there so much pressure?

In fact, this incident is completely to blame for Naoxiu, who returned last year with a large number of military weapons, books, good seeds, and orchids, which detonated the internal conflict of the shogunate in advance.

Originally, when Mr. Tanan began to build the Nirayama reverberatory furnace, because the black ship had not yet arrived, the shogunate did not have a sense of urgency, and did not put a lot of pressure on Mr. Tanan, but after Naohide's return, the shogunate higher-ups had a new understanding of overseas countries, and although they were skeptical about the gap in national strength, after the newspapers and books were gradually translated, this information was verified, and the old middle school led by Abe Ise Mamoru could not sit still.

In addition, the large barrel and iron cannon brought back by Naohide were also surprised by everyone after the demonstration.

After the tail of the Congreve rocket was equipped with three inclined stabilizing spiral plates, it was able to hit a fusang-ri outside, which was about 3,927 meters, and the shogunate's cannon in Shinagawa Odaiba could not hit so far

In the original words, "This southern barbarian creature is very terrifying, like a barbarian ship launched from the sea, our army is helpless, but to sit back and watch Edo turn into a sea of fire."

The firing speed, range and power of the large barrel and iron cannon also greatly exceeded everyone's expectations, and after discussion, the leaders and leaders of the shogunate standing army played "The weapon is not as good, but the elite and loyal can win." As soon as the old people heard it, they understood, this is completely unbeatable, and now you are shouting "only the elite can win", and then the birds and beasts will run faster than the rabbits, how can we wait?

Therefore, iron-making has become the most concerned thing for the old and middle schools, and Odaiba is placed in second place, after all, what is the use of Odaiba if the big cylinder can't be played?

Because the old middle school people tilted their resources and energy to the promotion of Niriyama and Lanxue, which caused the dissatisfaction of many people in the shogunate, the public adviser "Confucian" once said in public, "The country of birds and beasts in the south is also a country of war, and soon it will destroy itself", and take the newspaper brought back by Naohide as an example, "In the first year of Jiaei, Peolopa rose to the peak, and he did not cultivate benevolence."

Regarding overseas invasions, many genealogy daimyo and banner books believe that "Fusang is located overseas, and it is far away from the southern barbarian countries, and the soldiers travel at a great expense, and the people's customs and words are different, so what is the benefit of sending troops from the fangs?" Nowadays, foreign ships come frequently, but they are just asking for something." The implication is that Fuso and Europa are so far away that there can be no invasion by a great enemy, and the harassment of a few ships is just a hope for trade, so there is no need to worry about it.

Moreover, many samurai in the shogunate thought that the big barrel and iron cannon they got this time should be an accidental phenomenon, similar to the famous sword of Fuso, which is a divine weapon that cannot be mass-produced, otherwise Lan Guo has been with us for so many years, why don't we see Lan people sell it to us.

Even Mr. Jiangchuan Tan'an, the banner of Lanxue, is unwilling to refute these bar essences - if you say that the people of Lan Guo are now weak and can't take out these good things, then the bar spirits have to ask you to come up with evidence, God is pitiful, where to find evidence? Now the only countries in Europe that trade with Fusang are Lan Guo, and the Lan people are used to being arrogant, and they will definitely not admit that they are weak, even if the Lan people admit it, these barbarians will say that this is "a barbarian cunning with ulterior motives". Anyway, these people don't even want to go to the test launch site, and they can come up with the trick of a magic weapon just by relying on their brains, what can you do?

The mainstream view of Ranmono and Rangaku is that we don't pay attention to it before, but we can learn it quickly if we notice it, and this proves that we Fuso people are ingenious and can learn it quickly if we want to learn.

In this regard, Mr. Tan'an is in a dilemma, and sometimes he can't wait for the blast furnace and reverberatory furnace to be unsuccessful, because after success, it doesn't mean that it is not difficult to learn and learn orchids. In this regard, several old middle schools, including Toda Tadawen, comforted him, "Those generations are used to talking ~ words", these people are used to bragging, don't care, do your own thing.

"There will be a time when the wind and waves will be long, and the clouds will sail into the sea", the blast furnace ironmaking and the reverberatory furnace were very successful, Mr. Tanan was very satisfied with this, and he encouraged Naohide with poetry, saying that you should not be discouraged, now that you have achievements, the shogunate will definitely promote you vigorously.

Sure enough, after Mufu ran to review the production and operation, he brought Naohide back to Edo, but what Naohide didn't expect was that the promotion was promoted, but Naohide was named the deputy official of the white lord of two hundred stones, and asked to go to work on the same day, but where is the white master? The white lord is in the southern part of Kata Island, north of Ezo Land, where Naohide's grandfather, Naobu Hori, died in battle, and since the 11th year of Bunka (1814), he was returned to the Matsuzen Domain, and the shogunate has not sent anyone to visit it for 36 years.

Naoxiu looks like she has an intimate relationship with a dog, who am I? Where am I? I'm going to a snowy place on Birch Island, didn't I hear it wrong?