Cui Yan said helplessly: "Although I don't want to admit it, in terms of Qiyi skills, Lei Gong is the master, not even inferior to the legendary Mozi, Gongshu Ban, he should have skills that we don't understand! Otherwise, their artillery
It’s impossible to make it so huge!”
This means that Xu Wei is not here anymore, otherwise he would definitely sneer and say: "Am I going to tell you that I have a heat treatment workshop! No matter how big the artillery is, it will not crack!"
Xu Wei's current achievements are also thanks to the fact that he grew up in the Internet era, allowing him to learn a lot of useless junk knowledge on the Internet.
This pile of useless knowledge is worthless in modern times, but thousands of years later in the Three Kingdoms era, it has become a priceless treasure. Xu Weineng has achieved his current achievements. This pile of useless garbage knowledge extracted from the Internet should be
The biggest contributor, this is also his biggest golden finger.
Just like in the early days when the Internet was underdeveloped, many people who wrote time-travel novels didn't know that bird droppings were a kind of natural fertilizer, but this thing could really change the world during the Three Kingdoms era.
It can make grain production infinitely close to modern times. You must know that even if wheat is grown in the most fertile land in the world, the yield per mu will hardly exceed 200 kilograms.
In Xu Wei's time, a yield of 200 kilograms was considered a failure, a yield of a thousand kilograms per mu was considered a bad harvest, and a yield of 1,300 to 400 kilograms per mu was barely considered a good harvest.
After Xu Wei got struvite, he did not say that he could produce a thousand catties of wheat per mu, but he could still achieve six to seven hundred catties, which is equivalent to a 10-fold increase in grain output.
In the feudal era, there was 10 times the grain output, which was the biggest cheat. To put it bluntly, struvite was an artifact of the feudal era. It could double the grain production capacity several times without any problem, and it didn’t need to be left fallow.
If you can spread struvite, you will have no problem being a divine farmer in the feudal era.
In the era when Xu Wei traveled through time, not only everyone knew about struvite, but anyone who was a bookworm for five years would basically know about it. Many people know that there is an island country in the Pacific called Nauru because of struvite.
Rich because struvite is poor.
If Xu Wei had not had struvite, he would have been overwhelmed by the refugees. It was because of the guano that the food output of Bingzhou's barren land increased 10 times, and he was able to survive the refugee crisis. It can be said that it was light.
A struvite is stronger than any golden finger in other historical texts.
Ordinary people also don't know that the larger the caliber of a cannon, the easier it is to have cracks. In the end, the huge cannon cast at a high cost is scrapped.
The reason for the scrapping of the artillery is also very simple. It is the stress effect caused by uneven heat in the inner and outer layers.
The thicker the barrel, the easier it is to cause uneven heat between the inner and outer layers, and the stress effect to tear the barrel. Naturally, the larger the caliber of a cast artillery, the thicker the barrel.
People in the feudal era didn't know this. They could only rely on their own experience to explore, and naturally it was difficult to cast large-caliber artillery.
Of course, cannon casting masters in the later stages of history also found a way to solve this problem. They tried to solve this problem by filling the cannon barrel with cooling liquids such as water or oil to equalize the temperature difference between the inside and outside of the cannon.
It is only after the stress problem has been solved that later artillery pieces will become larger and larger. Some 24-pound guns and 36-pound guns appeared. Later, caliber was simply used instead of projectile weight to become the standard for artillery power!
To be honest, if this was not an old bookworm who has been immersed in the Internet age for decades, no one would know about this problem at all, and naturally there would be no solution, because no one would cast a breech in modern times.
Bronze cannons. Not to mention that ordinary people have no access to artillery. Even workers in arsenals are casting advanced breech-loading cannons. The front-loading bronze cannons of the feudal era have long been discontinued.
But as long as you have read Tian Liu's novels such as "Lingao Qiming", you will have some understanding of this outdated knowledge point from hundreds of years ago.
Only authors who write time-travel novels can dig out such outdated knowledge points from hundreds of years ago and write them in online novels to let everyone know about the technology of casting cannons hundreds of years ago.
Xu Wei knew this when he read time-travel novels. And he was one step closer than those authors who wrote time-travel novels. He had worked in a factory before, and he happened to be a heat treatment worker.
What he does every day is to pour the steel parts into pallets, then put the pallets on the conveyor belt, and watch the parts on the pallets being transported by the conveyor belt into the heat treatment machine. Watching those parts with temperatures of three to four hundred degrees
He did the simple and boring job of eliminating stress in the heat treatment machine for two full years.
Although heat treatment technology could 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 technology in this era.
Therefore, Xu Wei, who has only kept pallets in the factory for two years, can be said to be a master of heat treatment technology in this era.
He specially built a preheating chamber for heat treatment, and pushed the cast artillery into the preheating chamber at several hundred degrees to slowly cool down, so that the stress on the artillery naturally slowly disappeared.
That’s why Xu Wei’s artillery was upgraded so quickly. In the original history, it would have taken hundreds of years and the help of countless masters to upgrade the artillery from a small cannon of ten kilograms to a giant cannon that can shoot hundreds of kilograms of projectiles.
The artillery master racked his brains and made countless failures to build a giant cannon that could shoot hundreds of kilograms of projectiles. Xu Wei's accelerator was turned on hundreds of times, and it only took three years to achieve the goal. Now Xu Wei has begun to experiment with the breech
Shot.
The cannons in Xu Wei's hands were cast quickly and in large quantities, thanks to the technology of iron-frame cannon casting mentioned in history books.
To be honest, Xu Wei is a scumbag, otherwise he wouldn't have even been admitted to college. But it happened that his history teacher was very good at teaching, and he told stories as vividly and interestingly as if he had left school for more than 10 years.
To this day, I still have some impressions.
Even Xu Wei couldn't believe that after more than ten years, he actually remembered the historical iron cannon-casting technology so clearly that even the old man next to the illustration had some impression of it.
So when Xu Wei saw that the craftsmen who cast artillery were using clay to cast artillery models, he introduced the technology of iron mold casting to the artillery masters in Daqian. After several experiments, they came up with iron mold casting.
Gun technology.
Because it does not require a lot of manpower, material resources and time to make clay molds, Daqian's artillery factory can produce artillery very quickly. It can produce two hundred artillery pieces every month. It can even be said that Cao Cao and the others are the ones who limit the number of Daqian artillery. Daqian has already surpassed them by 10 times, and continuing to cast cannons is just a waste of resources.