"My lord, if you can solve the processing problem and polish the barrel of the iron-cast cannon like a copper cannon, not only will the cost be lower, the power will be higher, and the service life will be longer." Ma Yuliang saw that Shen Yue's face was not good-looking, so he gritted his teeth and said.

Shen Yue also knew, but he didn't know how the inside of the copper cannon was processed.

"How to process the chamber of the copper cannon?" Shen Yue asked.

"I used to hear my master say that it is cast with a clay mold like an iron cannon, and after cooling, the clay mold in the barrel is broken, and then the protruding part of the barrel is ground off with an iron tool......," Ma Liangyu said, introducing the production of copper cannons.

He also did not know the specifics.

Hearing this, Shen Yue's face kept beating.

Shen Yue did not know whether Europe had now begun to use hydraulic machinery to boring the inside of the gun chamber.

He always thought that ancient cannons could be used after being cast directly for test firing, but he didn't expect that they would also need to be processed.

It is no wonder that the top guns of the Ming Dynasty are of high quality, but the ordinary guns are unusable, so that the officers and soldiers of the Ming Dynasty are reluctant to use the cannons, for fear of blowing themselves up when the cannons are fired.

"I have a drawing here, and I want to cast the cannon according to my request. If the experiment is successful, not only can you forge a more powerful cannon, but it can even make the cannon more powerful and have a faster rate of fire. Shen Yue no longer asked them how to forge the cannon.

If the process is not improved, the cast cannon will have to be scrapped if it can't put a few cannons.

Young Master Shen can't afford to waste it.

What's more, after the current cannon is fired, it is necessary to pour water into the barrel to cool it, clean and dry the residue of gunpowder that has not been fully burned, and then reload and open the gun.

It's all because the airtightness is not good enough.

Shen Yue is from modern times, and there is no modern machining equipment and advanced materials, at least find a way to make the cast cannon of higher quality, and there is no problem with simple processing.

"My lord, since there are drawings, we will cast them according to the drawings! But the big ** paper of the Fran machine? Seeing Shen Yue take out a drawing from his sleeve, Ma Yuliang couldn't help but smile bitterly.

When he saw the things on the drawing, he couldn't help but open his mouth wide, "My lord, if it is cast like this, how can this cannon be used?" ”

Feng Zhenglun was secretly surprised, snatched the drawing from Ma Yuliang's hand, and when he saw the picture above, he couldn't help but be stunned.

"My lord, if it's a tube, how can it be used?"

Shen Yue smiled, "It's just an artillery barrel." According to the improvement of the Furlong cannon, the subsystem was loaded from the back, and then the rear subsystem was fixed on the gun. As a result, the rate of fire will be higher and it will be easier to clear the breech......"

"My lord, the power of the explosion in the sub-system is very huge, how can you withstand it?" Feng Zhenglun pointed out sharply, "It is better to produce it in the style of the Furlong cannon." ”

"The Fran cannon, although it has a high rate of fire, the bore cannot be processed! Only by smoothing the bore can the shells shoot farther and hit more accurately! A cannon bolt is installed on both sides of the tail of the gun, and the subsystem is fixed when the gun is fired, and after the cannon is fired, the subsystem is taken out and replaced with a new subsystem...... "Shen Yue's design is somewhat similar to modern artillery.

A straight barrel is far easier to machine than a front-loading gun.

In order to make this barrel more powerful, it is necessary to produce a lot of spare parts.

"My lord, are there any drawings for the other parts?" Ma Yuliang asked, "The Furlong cannon, if it can better combine the child and the mother, it will naturally be more powerful." ”

The Furlong cannon belongs to the rear-loading smoothbore gun. The molecular system is the same as the parent system, the child system is like the shell of modern artillery, the projectile and the propellant fired are packed in the child system, and the child system is then loaded into the mother system, and the child system is fixed in the square groove behind the mother system when firing, and the projectile flies out in the barrel of the mother system, which can effectively improve the shooting accuracy and launch speed.

Because the sub-system and the parent system are directly cast, they have not been processed, and the air tightness is very poor, resulting in the firing rate of the Furlong cannon is fast enough, but the firing range is very high, and the power is also small.

Shen Yue fully considered these problems, considering that the existing technical conditions can be processed, and the air tightness of the artillery tail can be improved, so such a design was adopted.

"The drawings are in my home, two, you can bring the experienced craftsmen among the military craftsmen with me." Shen Yue said with a smile.

The two of them knew that Shen Yue could come up with the drawings, which should be after careful consideration.

Immediately, they each summoned a few apprentices with experience in cannon casting and worthy cultivation to follow them to the Shen Mansion.

In the flower hall of the Shen family, everyone sat down, and Shen Yue instructed the maids at home to make tea, and then spread out a large picture on a specially made drawing shelf.

This diagram is completely different from the previous drawings with only one barrel, and the drawing is extremely complex, with a long barrel tail and a larger circular object divided into two pieces, and the internal subsystem is closely connected to the parent system.

Under the barrel of the gun, there was a gun carriage with wheels, and at the tail of the gun carriage, there was a long pole made of metal......

Whether it is the gun body or the gun carriage, it is more complex than the Furlong cannon.

"If it's just looking at the picture, it's not intuitive, butler, order someone to go to my study and bring the sample cannon......" Shen Yue saw that everyone was puzzled when he saw the final assembly map, so he opened his mouth and ordered.

The craftsmen of the Ming Dynasty seem to be struggling with the overly complicated assembly diagram.

Soon, a family member carried a model more than a foot long into the flower hall and placed it on the table of the Eight Immortals next to Shen Yue.

"Look, everyone, this is the new artillery I designed based on the Furlong cannon and the Hongyi cannon. The subsystem is separated from the mother, and the subsystem is connected to the mother system with an iron hoop, and before firing, the child system is pushed into the mother, and then the gun hoop is fixed...... After firing, open the cannon hoop, take out the subsystem, replace it with other subsystem, and put the fired subsystem aside and continue to reload ......"

With the model, it is easy to introduce.

Far more intuitive than drawings.

The entire model was made by Shen Yue for the carpenter according to the scale before.

Such an intuitive model amazes everyone.

"My lord, if it were made in this way, wouldn't the weight of the cannon be heavier?" Feng Zhenglun never thought that the cannon could be cast like this.

"No, according to this method, the barrel is made of iron, and it only needs half the thickness of an ordinary cannon! The subsystem is cast in copper, and the combination of the two, the wooden mouth is large, the subsystem mouth is small, and the combination is closely combined, making it one. The outer metal hoop is tightly hugged to avoid injuring the soldiers by the explosion...... "In Shen Yue's design, there is a step stop at the end of the barrel, which is larger than the inner chamber of the gun barrel, and the step of the subsystem is larger on the outside than the inside.

In this way, airtightness can be effectively improved.

The two are fixed with a copper hoop cut in half to prevent the huge recoil generated by the explosion when the cannon is fired, which will injure people.

Some are similar to modern rear-loading guns, but much simpler.

"My lord, in this way, the cannon hoop can effectively control the subsystem from being blown up? You know, when the artillery is fired, its power is very huge......" Ma Yuliang said with a frown.