Steelmaking, at least for Du Ziteng, feels like a very mysterious thing, Huaxia is not in ancient times without steel, and even has patterned steel, but it is achieved by repeated hammering and folding through guò, relying on smelting to obtain steel, Du Ziteng worships Ding Yi again, and he also feels a bit mysterious.

So he tried to convince Ding Yi: "Sir, when the disciple was in the guard, he saw that those craftsmen who could make zuò muskets only rolled up and hammered with wrought iron...... He was not wrong at all, in fact, in the original history of the American Civil War, wrought iron was still used as the barrel.

Ding Yi was very happy to hear it, this is the spirit of curiosity, not blind obedience: "If there is no smoke when the musket is fired; What if muskets, like crossbows, were equipped with mechanical aiming? "To make a firing pin rifle, the tolerance of a single bullet case is not something that Ding Yi can solve at this time.

If the tolerance control process cannot be achieved, then the cartridge case will be too large to be loaded; The cartridge case is too small to be fixed, there is a problem with air tightness, a blow up and a series of other problems. In the history of human firearms development, bullets have always determined firearms, that is, what kind of bullets can be made, and what guns are used to fire it.

Therefore, before the tolerance control of the cartridge case can be realized, the firing firearm should not be considered.

But the concave bottom bullet - because of the depression in the bottom of the warhead, after the explosion of the gunpowder, the warhead expands, and the tight rifling ensures airtightness - is something that Ding Yi can now fully achieve, and he does not intend to continue using black powder.

When there are less than 100 people under his command, and there is Wang Zhen, the powerful eunuch of the government and the opposition, as the backstage, Ding Yi can carry out complex grinding, polishing and other processing of black powder, if the personnel base increases, and Yu Qian will definitely not be able to support him like Wang Zhen Now, it is impossible for Ding Yi to refine black powder like before.

If nitroglycerin cannot be developed within three years. Ding Yi felt that climbing the technology tree was a meaningless thing at all. No, he doesn't plan to use it for three years, he plans to get this thing out in this year, the first year of Jingtai. Ding Yi's previous life was not a role of otaku, white-collar worker, businessman, programmer or the like.

Soldiering is his profession, and military enthusiasts are his hobby.

The basic composition of nitroglycerin is nothing more than nitric acid, sulfuric acid, glycerin, and soda ash.

He said to Du Ziteng: "Steel barrel, we will need it soon." ”

Du Ziteng didn't say anything more, and sighed deeply. got up and went to do what Ding Yi instructed, which is what Ding Yi admired most about him: if he didn't understand, he dared to ask questions, and when he got an answer, whether he agreed or not, he would try his best to carry out the orders given to him by Ding Yi.

Ding Yi for getting nitroglycerin gunpowder. That is, the grasp of yellow gunpowder is definitely not out of lust or conjecture.

To get glycerin is very simple. Glycerol can be obtained by hydrolysis or saponification of guò oils. For Ding Rongcheng, who sits on tens of thousands of acres of land. Is there anything wrong with getting some grease or a lot of grease? The rest is to experiment with how to hydrolyze or saponify;

In fact, the reason why Ding Yi can't get nitroglycerin right away is soda ash and sulfuric acid.

Or rather: sulfuric acid.

When Ding Yi was in the special forces, he went on a mission to go undercover in the drug lord's territory, and his cover identity was an arms expert. He has made the soda ash method with his own hands, and he is also a door clear in the Hou's alkali method, so he will not dare to be an arms expert? Narcos don't believe in academic certificates or anything like that.

As long as soda ash has sulfuric acid and table salt, sodium sulfate can be produced. Then use coke to reduce sodium sulfate to obtain sodium sulfide, and finally use sodium sulfide to react with limestone to obtain sodium carbonate, which is no problem at all. Although in this process, high temperature and sulfuric acid will cause damage to the equipment, and many odors will be generated.

But after all, there are no environmental regulations in this era, right? There are no regulations on industrial pollutant discharge, and whether to use this method or find a way to make ammonia gas to alleviate the danger depends on Ding's conscience.

As for nitric acid, saltpeter reacts with concentrated sulfuric acid heating, nitric acid is volatile, it will evaporate, and nitric acid vapor can be obtained by exporting and redissolving it in aqueous solution. If you don't have glassware, you won't be able to observe the reaction process, and it may be too difficult to operate, but after the glass is fired, there will be no problem. Of course, there will be dangers, but in this era, getting some death row prisoners to do this kind of thing is not necessarily how difficult it can be for Ding Rongcheng.

So the root of the problem is sulfuric acid.

Ding rubbed his temples with a headache, in fact, he had experimented with sulfur to obtain sulfuric acid.

There is no problem with simply balancing the molecular formula, just forget about the actual operation, at least Ding someone has not succeeded.

Dante knew that sulfuric acid was not absent in ancient China, and this era was called "alum oil", that is, green alum was used as raw material and calcined in a distillation vessel, in this process, green alum released sulfur dioxide and sulfur trioxide, and sulfur trioxide and water vapor condensed to obtain sulfuric acid.

However, he sent a lot of people, but they didn't find alum oil, let alone alum.

"Sulphuric acid! Where are you? Ding Yi shook his head and said to himself, because there is sulfuric acid to make soda ash and nitric acid, and nitric acid can make silver nitrate, which is one step closer to the silver mirror reaction......

At this time, I heard Liu Tie shouting outside: "Get out of the way, get out of the way, Zhanzhi, what are you stopping me for?" Someone from Jingshi is coming! ”

As soon as Ding heard this, he had no choice but to throw the sulfuric acid into the depths of his mind first, and Ding Zai, the person from Jingshi, knew that he would come, and he had expected this moment from the moment he asked Qian Zhixian to report it truthfully.

Liu Tie came in, saluted Ding Yixing, and said to Ding Yiyu: "Sir, someone from Jingshi is here." After he finished speaking, he complained again, "It's the head of the military department who came, and there is a thousand households of the brocade guard." It's okay that the main thing, that Qianhu is a bastard, and he thinks he is a character! ”

When Liu Tie returned to Ding's mansion, the director surnamed Xu was indeed very polite, and when he saw Ding Yi, he stretched to the ground and said, "Mr. Rongcheng." "Because Ding's reputation in the military department is too strong, the last time Wang Yue and Wang Shichang lived in that world, his uncle Zhang, was so rectified by Ding Yi that he almost became a monk, and he had to thank Ding Yi for having a lot of them. Therefore, these principals are reluctant to grudge against Ding Yi, even if Ding Yi is no longer an ambassador of the Homeland Security Agency.

It was the thousand households, sitting on the chair with a big thorn, holding Erlang's legs, looking at the breasts of the slaves and maids from time to time, and even whistling with a lewd smile, and when he saw Ding Yi coming in, he didn't even get up: "Ding Rujin, you are not small, and the old men have been waiting for you for more than half an hour!" Damn, Lao Tzu heard that the murderous saint Xiao Nuxia was famous in Beijing, and he came to Rongcheng and wanted to ask Xiao Nuxia to come out and drink two cups, but this poor sour actually told Lao Tzu that it was inconvenient! ”

He said that he was poor and sour, but it was Wang Yue next to him.

Ding Yi ignored him, smiled and greeted Director Xu, and each sat down at the guest of honor.

The brocade-clothed guard Qianhu looked at Ding Yi ignoring him, and couldn't help but get angry, and slapped the case hard, and the halberd pointed at Ding Yi and scolded: "The surname is Ding, do you think you are still the ambassador of the Yamen of the Homeland Security Agency?" Do you fucking think you're still a doctor? To be honest, Lao Tzu came to Rongcheng to lose your face! Let's see if you can bite Lao Tzu's eggs! ”

Wang Yue wanted to make a move several times on the side, but was stopped by Ding Yi shaking his head slightly.

Director Xu smiled bitterly and arched his hand and said: "Qin Qianhu, Mr. Rongcheng looks at the sea, and the Son of Heaven also gives him a royal pen, which is admired by Shilin...... He doesn't necessarily have much respect for Ding Yi, but this Jinyi Wei speaks ill of Ding Yi, he is also a civil official, if he is silent, not only Yu Qian, Li Xian, and Shang Qian will have opinions about him in the future, but the entire Shilin will definitely look down on him.

Who knew that this Qianhu named Qin Zhu didn't give him face at all: "Yubi Laozi came in and worshipped!" The royal pen Lao Tzu on the flag outside also worshipped before entering the house, what's the matter, want to find Lao Tzu's fault? , Ding, I'm not afraid to tell you, your Grandpa Qin is doing the job of finding faults, you want to find fault with Lao Tzu, but there is no way! ”

Ding Yi smiled and didn't pay attention to him, but just talked to Director Xu, who was still very polite: "Mr. Rongcheng, this time the students from the middle school came to ......" He came in the name of interrogating the Warat military, because otherwise, who would he send?" Are you an official of the temple? People are in charge of tributary foreign affairs, and this naturalized Di Yi does not seem to be in accordance with the rules.

Of course, the Ming Dynasty is not without a yamen to deal with this matter, but the number is not large, a total of twenty or thirty people, this scale of naturalization, the border pass has a yamen such as the Xuanwei Division to do this work, but you can't always drive the rats to the border pass, and then the Xuanwei yamen will take care of it, right? After all, this sneaked into the mainland to naturalize, do you not know, this newspaper is really a novelty, and sending this principal and the thousands of households of Jinyiwei over can be regarded as a suitable situation.

However, before Master Xu finished speaking, Qin Qianhu slapped the case again and scolded angrily: "The surname is Ding, you'd better get acquainted, call out the murderous saint Xiao Nuxia to accompany Lao Tzu to drink two cups, sing a small song, and forget about Lao Tzu, otherwise, damn it, your matter will happen today!" ”

Wang Yue Wang Shichang, who was on the side, listened, his blood surged, and he grabbed an arrow step, pulled this Qin Qianhu's shoulder, and threw him to the ground over his shoulder, that Qin Qianhu couldn't help screaming, Wang Yue lifted his leg, and was about to stomp down, but he heard Ding Yi say in a deep voice: "Shichang stay." ”

That Qin Qianhu got up from the ground, rubbed his teeth and mouth for a while, but sneered at Wang Yue: "Damn, you are so brave and sour, Lao Tzu will settle accounts with you in a while!" But he turned around and pointed at Ding Yi proudly and shouted, "How is it?" Ding someone, now you know that you are afraid, right? Fuck me to save some face for you, you really take yourself seriously! Sue you, Xiao Nuxia, the holy hand of murder here, if you don't come out to wait for Lao Tzu to drink comfortably, your Ding family will be finished! ”

Very mentally retarded, a very simple threat, but for Ding Yi, who resigned from his official position, it is also the most deadly threat.

Director Xu shook his head helplessly on the side: Don't care how stupid these thousand households are, don't say how much Ding Yi has to do with it, you can't avoid this immediate loss. (To be continued......)

PS: I'll wake up later, I should have to code another chapter at eleven o'clock!