I am not an ant thief in the Three Kingdoms

Chapter 488, outdated knowledge
Cui Yan said helplessly: "Although I don't want to admit it, Lei Gong is the master in terms of extraordinary skills, and he is not even inferior to the legendary Mozi, Gong Shuban. He should have skills that we don't understand! Otherwise, their artillery It is impossible to make such a huge one!"

This means that Xu Wei is not here, otherwise he would have sneered and said, "Do I have to tell you that I have a heat treatment workshop! No matter how big the cannon is, it won't crack!"

Xu Weineng's current achievements are also thanks to the fact that he grew up in the era of the Internet, allowing him to learn a lot of useless knowledge on the Internet.

It is this pile of waste knowledge that is worthless in modern times, but it has become an invaluable treasure in the Three Kingdoms era thousands of years later. Xu Weineng has achieved his current achievements. This pile of useless waste knowledge extracted from the Internet should be The biggest hero, this is also his biggest golden finger.

Just like when the Internet was underdeveloped in the early days, many people who wrote time-travel novels did not know that bird droppings were this kind of natural fertilizer, but this stuff could really change the world in the Three Kingdoms era.

It can make the grain output infinitely close to modern times. It is important to know that even if the wheat in this world is planted in the most fertile land, the yield per mu can hardly exceed 200 catties.

In Xu Wei's era, 200 catties was a bad harvest, and a yield of [-] catties per mu was considered a bad harvest, and a yield of [-] or [-] catties per mu was barely considered a bumper harvest.

After Xu Wei got the struvite, he didn't say that he could produce a thousand catties of wheat per mu, but he could still do six or seven hundred catties, which is equivalent to a 10-fold increase in grain production.

In the feudal era, there were 10 times the grain output, which is the biggest cheat.To put it bluntly, struvite is an artifact of the feudal era. It can double the grain production capacity without any problem, and there is no need to fallow. As long as you can scatter struvite, you will have no problem being a Shennong in the feudal era.

And when Xu Wei traveled through that era, struvite was not only known to everyone, but anyone who was a five-year-old bookworm would basically know about it.Many people know that there is an island country in the Pacific Ocean called Nauru, because the struvite is rich, because the struvite is poor.

If Xu Wei didn't have struvite, he would have been blown away by the refugees.It was because of the guano that the food production of the barren land in Bingzhou increased by 10 times, and he survived the refugee crisis.It can be said that just a single struvite is stronger than any golden finger in other historical texts.

Similarly, ordinary people don't know that the larger the caliber when casting a cannon, the more likely the cannon will be cracked, and the giant cannon that was cast at a cost will be scrapped in this way.

The reason for the scrapping of the artillery is also very simple, that is, the stress effect caused by the uneven heat of the inner and outer layers.

The thicker the gun barrel, the easier it is to cause uneven heat in the inner and outer layers, and the easier it is to tear the barrel due to stress effects. Naturally, the larger the caliber of the cast artillery, the thicker the barrel.

People in the feudal era didn't know this. They could only rely on their own experience to figure it out. Naturally, it was difficult to cast large-caliber artillery.

Of course, the cannon-casting masters in the later period of history also found a solution to this problem. They tried to pour water or oil and other cooling liquids into the barrel to make the temperature difference between the inside and outside of the cannon equal to solve this problem.

But after solving the stress problem, the artillery in the later period will become bigger and bigger. What 24-pound guns and 36-pound guns appeared, and later simply use the caliber instead of the weight of the projectile, which becomes the standard of artillery power!
To be honest, if this is not an old bookworm who has been immersed in the Internet age for decades, no one will know this problem at all, and naturally no solution can be found, because no one has cast a breech in modern times The bronze cannon.Not to mention that ordinary people cannot touch artillery, even the workers in the arsenal cast advanced breech-loading guns. Bronze breech-loading guns in the feudal era have long since ceased to be cast.

But as long as you have read Tianliu novels like "Lingao Qiming", you will understand this kind of outdated knowledge points hundreds of years ago.

Only authors who write time-travel novels can dig out such outdated knowledge points hundreds of years ago and write them in online novels to let everyone know the technology of casting artillery hundreds of years ago.

Xu Wei knew this when he was reading time travel novels.And he is one step closer than the authors of time-travel novels. He used to work in a factory, and he happened to be a heat treatment worker.

What he does every day is to pour those steel parts into the tray, then put the tray on the conveyor belt, and watch the parts on these trays being transported into the heat treatment machine by the conveyor belt.He has been doing such simple and boring work for two full years, looking at those heat treatment machines with a temperature of [-] to [-] degrees to relieve stress.

Although the technology of heat treatment can be mastered by any assembly line worker in Xu Wei's era, it is not an exaggeration to say that it is the most advanced high-tech in this era.

So Xu Wei, who has only put pallets in the factory for two years, can be said to be the master of heat treatment technology in this era.

He specially made a preheating chamber for heat treatment, and pushed the cast cannon into the preheating chamber at several hundred degrees to slowly cool down, and the stress of the cannon naturally disappeared slowly.

That's why Xu Wei's artillery can be upgraded so quickly. If in the original history, it would take hundreds of years for the artillery to be upgraded from a small cannon that weighs ten catties to a giant cannon that can shoot hundreds of catties, with the help of countless masters. Master Pao racked his brains and paid countless failures to cast a giant cannon that can shoot a hundred catties of projectiles. Xu Wei has opened up the accelerator hundreds of times, and it only takes three years to reach it. Now Xu Wei has begun to experiment with the breech. Cannon.

The cannons in Xu Wei's hands were cast quickly and more, thanks to the technology of iron fan casting cannons mentioned in history books.

To be honest, Xu Wei is a scumbag, otherwise, he wouldn't even be admitted to a university.But it happened that his history teacher was very good in class, and he told stories vividly and interestingly.Even though he left school more than 10 years ago, he still has some impressions.

Even Xu Wei couldn't believe it. It had been more than ten years, and he had a clear memory of the technique of the iron cast cannon in history. He even had a little impression of the old man next to the illustration.

So at the beginning Xu Wei saw that the artisans who cast artillery used clay to cast artillery models, so he mentioned the technology of iron mold casting to the big gun masters. After several experiments, they came up with iron mold casting. Cannon technology.

Because there is no need to use a lot of manpower, material resources and time to make clay molds, Dagan’s artillery factory can produce artillery very quickly, and can produce two hundred artillery pieces per month. It can even be said that Cao Cao and the others limit the number of Dagan artillery. Daqian has exceeded their 10 times, and it is just a waste of resources to continue casting artillery.

　Ask for a monthly ticket, ask for a recommendation ticket.

　　
　
(End of this chapter)