"Incredible, incredible. This turned out to be true. ”

Sun Yuanhua's cry of surprise came from the room of the research institute.

Throwing down the charcoal pen in his hand, Sun Yuanhua looked at the thick pile of manuscript paper, with a look of disbelief on his face.

Sun Yuanhua really didn't expect that these drawings given to him by His Royal Highness King Xin would be true.

Militaristic heavy weapon!

The drawings drawn in this drawing are definitely a militaristic weapon!

Sun Yuanhua's hand holding the drawings couldn't help but tremble.

After a few days of calculations, Sun Yuanhua found that most of the parameters marked on the drawings of this light cannon could theoretically be achieved.

This made Sun Yuanhua feel too incredible.

Sun Yuanhua knew that even if he couldn't achieve 100% of the parameters on the drawings. As long as it can reach two-thirds or even one-half of the performance on the drawings, then this kind of light artillery is enough for Liaodong.

It can be said that as long as this kind of light cannon is cast, the Ming Dynasty will not be afraid of the Eight Banners army of Houjin.

It's just that the blueprint of this kind of militaristic heavy weapon, how could King Xin take it out easily?

Didn't Shin know the true value of this drawing?

Glancing at the charcoal pen on the side of the manuscript paper, Sun Yuanhua was stunned.

This charcoal pen seems to have been made by Shin Wang.

It's a very simple little thing, although the writing is not very good-looking, but it saves a huge trouble when writing.

Use it to write, without frequent grinding and dipping ink; Don't worry about writing too fast, you won't be able to read even the words on the paper.

This King of Faith is also quite talented!

Only then did he make an evaluation of King Xin in his heart, and Sun Yuanhua remembered the evaluation that his teacher Xu Guangqi had made to King Xin.

Sun Yuanhua remembered that Xu Guangqi's evaluation of Zhu Youzhen was only four words, that is, "amazing talent." ”

"Amazing"?

To be honest, Sun Yuanhua had never heard a teacher make such a similar evaluation of anyone else. Even the most respected missionary of Matteo Ricci, Xu Guangqi never used such an evaluation.

Could it be that this drawing was designed by His Royal Highness King Shin himself?

Sun Yuanhua couldn't help but have an unreliable thought in his heart.

Maybe with such a ability, King Xin is worthy of the words "amazing and gorgeous"!

When Zhu Youzhen discussed with Sun Yuanhua how to cast a cannon, Sun Yuanhua made a positive judgment on his conjecture.

Nine times out of ten, the drawings of the light cannon were designed by His Royal Highness King Shin himself.

Even if he didn't mention the drawings, he believed in the unusually broad thinking of His Royal Highness the King, and he really deserved the words "amazing talent".

Speaking of casting cannons, the middle school in the previous life described this very simply. It's like it's an easy thing to do.

From Sun Yuanhua's mouth, Zhu Youzhen knew the specific steps and difficulties of casting cannons in this era.

Leaving aside the metallurgical aspects of the materials needed to cast the cannons. In this era, the mold used alone is a very complex project.

In this era, clay mold casting cannons were used.

The clay mold casting cannon needs to make an inner core of the gun chamber first, and then pour the mold to make the outer mold of the gun body. Finally, the inner and outer molds are combined to pour the artillery.

According to Sun Yuanhua's description, the efficiency of clay mold casting cannons is not high, and it generally takes several months to cast a cannon.

Why does it take so long?

In fact, the main reason is that it takes a long time to repeatedly pour the mold, and the molded clay mold needs a lot of time to do the shade drying treatment.

The biggest defect of the clay mold is in the shade drying treatment.

The clay mold needs to be dried in the shade, and it cannot be dried or baked. Because clay molds made of clay are easy to dry out and crack when dried and baked. Once it dries out, the clay mold is wasted.

To cast the artillery, the clay mold must be dry thoroughly. Once the water in the clay mold is not completely dry, the water vapor in the clay mold is precipitated by the hot air of the molten iron during casting, and the cast cannon body is prone to pores and other honeycomb tissues, resulting in the complete failure of the casting gun.

Clay mold casting cannons, casting 10 can succeed in 3, which is already a high proportion.

For casting cannons, Sun Yuanhua is a well-deserved authority.

The entire process of casting guns, from metallurgy, molding, casting to the final planing of the gun chamber, Sun Yuanhua said that the head is the way.

After listening to what Sun Yuanhua said, Zhu Youzhen found that casting cannons is not an easy task.

However, from the procedure mentioned by Sun Yuanhua, Zhu Youzhen also obviously found something unreasonable.

"Molds made of clay? If the cannon body is broken and taken out, isn't it necessary to make a clay mold every time a cannon is made? Zhu Youzhen asked in disbelief.

Isn't this a cumbersome operation and difficult to control uniform specifications?

"Yes, Your Highness. Clay mold casting cannons do have this inconvenience. Sun Yuanhua replied helplessly.

"Can you use an iron mold to cast a cannon?" Faced with Sun Yuanhua's helplessness, Zhu Youzhen asked him softly.

In Zhu Youzhen's memory of his previous life, he heard the name of the iron mold casting cannon, so there should be this kind of process.

"Iron mold?" Sun Yuanhua fell into a state of contemplation.

Iron molds are not a new concept.

Many of the agricultural tools of the Ming Dynasty were repeatedly poured using iron molds.

The biggest advantage of the iron mold is that it can be used repeatedly, and there is no need to consider the problem of moisture.

It's just that no one has ever cast something as big as a cannon with an iron mold.

The clay mold casting cannon is a casting process derived from the large bronze bell in ancient China. In China, there is no mass demand for large bronze bells.

It is enough to cast a large bell at a time, and to use a clay mold.

But artillery needs to be produced in large quantities, and clay molds are far from enough to meet the needs.

"Iron mold? This should give it a try. ”

Sun Yuanhua made a simple calculation in his heart, and he felt that the iron mold casting cannon should have a certain feasibility.

However, whether it will work or not, it still needs to be verified physically.

After this in-depth exchange, Sun Yuanhua recognized King Xin's ability.

From this moment on, Zhu Youzhen was qualified to interact with Sun Yuanhua on an equal footing.

No way, that's what the experts are like.

Experts have the dignity of experts.

No matter how noble your status is, experts will only respect your status, not your people.

If you want to gain the true respect of experts, either you do an impeccable job in being a person, and let experts respect you from the bottom of their hearts;

Either you have to have some technical attainment, and you don't need to be more accomplished than the expert, but at least you can't make the expert feel ridiculous.

A pure layman, no matter how noble his status is, it is difficult to gain the true respect of experts.

Fortunately, in the memory of Zhu Youzhen's previous life, although there are not many real technologies, there are many concepts that far exceed this era.

Like Sun Yuanhua, these practical experts, they themselves are already standing at the pinnacle of this era. It's just that they are limited to the reason of vision, and what they lack is more of an idea.

Compared with the horizon, Zhu Youzhen, who has the memory of the Big Bang period of knowledge in his previous life, is anyone who is completely better than anyone in this era.