In any case, they used the wrong technical support to realize the mass production of steel technology that took hundreds of years to succeed in advance through modification and research and development, which is of great significance to the Bengang team at this time.

The performance of the casting material is improved, so the gap in the casting technology that is strictly kept secret by the Westerners will be equaled, or even exceeded.

With their own cannon casting technology, Li Tianyang and them no longer have to be stuck in the throat by Westerners, and they have been shirked by Westerners under various excuses, but they have not seen the cannons they need for more than half a year or even a year after paying a deposit.

The mass production of high-power artillery is of greater significance to Hong Tang, the "Yang Fan" battleship has been in service for a while, and this time Li Tianyang sent ten warships to accompany He Yong to the north to carry livestock, not all of Hongtang's "Yang Fan" warships. Don't forget that Wu Shu also had four "Yang Fan" warships in the hands of Wu Shu in the distant Ryukyu Kingdom, and Wu Juren and Zhao Xingdou also had four or five "Yang Fan" warships in their hands as the main force.

Needless to say, the performance of the "Yang Fan" battleship, even if it is placed among the European powers with giant ships, it can almost be classified as a second-class battleship, but because the Bengang team itself cannot mass-produce cannons, and the procurement of cannons has been harassed by Westerners, so that the "Yang Fan" battleship has not made up all the gun positions until now, and the firepower is obviously insufficient.

The successful research and development of steel-cast cannons means that in the foreseeable days in the future, the gun power of Hongtang's "Yang Fan" battleships will be supplemented, and then only the more than 20 "Yang Fan" warships belonging to Bengang can help Bengang gallop in the vast sea area of Daming, and no one can challenge Hongtang's hegemony in the Daming Sea.

For example, now let Li Tianyang have some scruples, Jingpu Yan Siqi and his group, after the Hongtang "Yang Fan" battleship is completed, even if they have a great numerical advantage, Bengang can wipe out this group of people on Dayuan Island at a small price!

"Of course, in addition to the improvement of the material, in fact, we have also put a lot of thought into the gun chamber, we also used the dam and bearing linkage system you used in Jilong Mountain, for which we also specially designed a set of machinery, which can steadily polish the inner diameter of the newly baked gun chamber, making it more rounded and regular, and the scrap rate has plummeted!" Speaking of the research and development of this meeting, Chengcai couldn't stop talking, and pulled Li Tianyang is crackling nagging, trying to talk to Li Tianyang about the other technologies they developed for casting cannons.

"Bearing linkage system? Burnish? After all, Li Tianyang is a person who came from later generations, and he also went to work in other provinces, and there were many hardware factories in Jiangsu and Zhejiang.

Even, Li Tianyang interjected, and was reminded by Chengcai to say: "Then can you try to add a rifling wire to this gun chamber?" ”

"Rifling? Is this any use? "Chengcai is puzzled.

"This rifling is to pull out a groove with a small arc in the inner chamber of the gun chamber, so that the shot cannonball can rotate with a strong force and produce greater lethality!" Li Tianyang stammered and told him what he didn't know from which book he saw about the role of rifling, which made Chengcai look at him in surprise.

"This can't be what you saw from some ancient book, right?" Chengcai asked suspiciously.

"I know you're still asking!"

"Okay, then we'll go back and study it and see if it's operational!" Chengcai was unmoved, and he didn't think that the advice provided by Li Tianyang was of much use.

With the success of their specialization in various technologies for a long time, now in the Bengang team, whether it is the amount of knowledge or practical skills, I am afraid that they are the most knowledgeable people in the whole team. It is precisely because of this that they no longer attach great importance to every opinion given by Li Tianyang as they did at the beginning, and over the years, Li Tianyang has actually made a lot of suggestions to the troops, and even the wrong situation, and he is no longer a god in everyone's hearts.

"Brother-in-law, do you know, this quenching is also a university question, in the past, everyone used to cool the steel directly with water, and later in our research found that the quenching effect with grease is different, and even put it in the water for a period of quenching, and then put the oil to quench for a period of time is another effect.................. "When talking about technology, Chengcai is a chatterbox, and his mouth has not stopped.

It wasn't until he felt his mouth dry that Cheng Cai stopped talking, found a pure and flawed glass, poured a glass of water and drank it.

“！！！” Li Tianyang originally quietly listened to Chengcai vent his emotions after staying in the R&D institute for all these years and not being able to show his talent for a long time, but he didn't expect to see the transparent glass in Chengcai's hand at this moment, he couldn't help it, and grabbed the cup in Chengcai's hand and asked, "Do you know what this is?" ”

"Until, the glass!" Chengcai looked at Li Tianyang inexplicably: "This thing is sold by Westerners, brother-in-law, you don't know, right?" ”

"Fart, I'm going to know the glass! Lao Tzu is asking you, how can you have a cup made of glass here? "Try to get angry, I don't feel like I'm on the same channel as this guy.

"What we do, brother-in-law, don't you know, this glass practice is actually not much different from the glass practice in the Western Regions, but there is a difference in the material!" Chengcai spreads his hands, and he looks like a matter of course!

"............" Li Tianyang was silent, looking at the R&D genius in front of him with black lines, but he was speechless for his brain that was dull and abnormal in other aspects except R&D: "I remember that I seemed to have given you a task to let you take the R&D glass with you, since you have all developed it, then why don't you report to me?" ”

"Brother-in-law, don't look at this glass now seems to be transparent and flawless, that's because we deliberately blew the wall of the cup when we blow it, so it looks transparent, in fact, if this cup is a little thicker, you will find that the glass is still yellow, and there are flaws!" Chengcai still remembered that Li Tianyang had given them this order, but he also had a reason, but when he said this reason, Li Tianyang felt a little speechless!

Limited by the limitations of materials in this era, even the glass products transported to the Ming Dynasty by Westerners are actually colorless, not completely colorless like later generations.

In fact, there is only one line of difference between the glass products made by the Chengcai and the glass products sold by the Westerners to the Ming Dynasty. In other words, in Chengcai's view, there are still flaws in glass technology, but in Li Tianyang's view, it has long been regarded as a qualified commodity material, as well as a military material.

(End of chapter)