Because they were still worried about the strength of this batch of new cast iron, the craftsmen still honestly used the iron core and copper body to cast the cannon.

Finally, ten copper-iron alloy cannons with a length of about one meter were cast.

According to Su Yonglin's request, the gun body of these guns is the thickest with the tail, and then it continues to thinner, while the muzzle is relatively thinner.

The cannon body is cylindrical and is installed on a thick wooden shelf to fix it.

Also, because the cannon is very heavy, close to 2,000 kilograms, if it is to be transported, it requires a very large and large vehicle with a large load.

When Su Yonglin came to inspect after hearing the news, he saw the craftsmen preparing for a test shot.

According to previous experience, because of the huge launch recoil, basically you need to dig a hole to place the cannon in the pit and use the power of the earth to absorb the recoil.

Su Yonglin didn't say it at the beginning, and the craftsmen didn't care. They pulled the bare gun barrel to test the firing. As a result, the terrifying recoil almost killed the craftsman responsible for the firing.

Now they understand that during the test firing, they must dig a hole to bury the cannon body and reinforce it, so that it is safe.

They stuffed five guns into iron bullets, aimed the muzzle at the test-shooting wall they built about 200 meters away, and then ignited the leads and avoided them.

Then everyone blocked their ears together.

The long-awaited picture of Su Yonglin finally appeared.

Accompanied by the deafening sound, five iron bombs were fired out, speeding towards the city wall in the distance, and smashing it hard.

Su Yonglin took the clairvoyance and looked over there. What a good guy, he instantly made five big pits, dust flying.

It was a strong and fierce attack. The ordinary city wall would probably collapse at least part of it without a few bombardments. Unless it was a particularly powerful world-class city, it was possible to fight against such terrible war weapons.

But as long as you shoot enough times, the final victory must belong to artillery.

Su Yonglin clenched his fists and shouted ok.

The craftsmen and the followers around them were overjoyed and hugged each other to celebrate.

It is indeed not easy to go along the way. They have spent a lot of effort to finally complete such powerful war weapons.

As for Su Yonglin's perspective, if the cannon body could be longer, it would be the Red Cannon, a war artifact in the late Ming Dynasty.

Although the artillery was very rudimentary at this time, it was just a first to show its strength. The poor stability and shooting accuracy made it only use to shoot large-scale targets that would not move, such as cities.

Even due to the strong recoil force, the fired pits shook out a lot of soil, so that the original shooting direction was biased. After each shooting, the design angle needs to be recorrected, which is very time-consuming to launch.

These problems were all major problems with early artillery.

However, compared with the possible blow-off problems of a simple iron cannon, the structure of the iron core copper body has greatly enhanced the safety of the cannon.

And it's really powerful.

Its direct injection method greatly increases the impact kinetic energy, and the explosion kinetic energy generated by gunpowder explosion is far from comparable to the elastic kinetic energy of wooden structures.

The structure of the traditional city wall is very effective in dealing with general kinetic energy bombardment and catapult type drop bombardment, so it is difficult for catapults to destroy the city wall.

However, in the face of direct artillery bombardment, the traditional city wall will face huge challenges. For a certain period of time, the traditional city wall will be defeated and cannot fight against the powerful artillery at all.

现在的实验就是证明.

So despite the many problems and difficulties, Su Yonglin decided to continue to advance the experiment, determine its maximum number of shots at one time, and find ways to improve the recoil problem.

Its longest range and maximum effective range are then calculated.

After all these are confirmed, you can select excellent soldiers to practice. After the excellent soldiers become familiar with the artillery, they can bring the artillery to the battlefield.

The mass production plan for artillery has also been determined. The Ministry of Finance will allocate special funds to the Firearms Department. Although the Ming Dynasty's finances are far from being sufficient, the Firearms Department does not need to worry about money at all.

They just need to worry about whether they can complete the tasks assigned to them by Su Yonglin on time, quantity and quality.

In order to commend craftsmen and officials of the Firearms Department, Su Yonglin decided to upgrade the Firearms Department to the Firearms Bureau, which is directly under the Works Department, and is not ranked alongside any other department.

Qiu Yuan, the head of the Firearms Department, was promoted to the director of the Firearms Bureau. He had the right and qualification to bypass all channels and directly submit the statement to Su Yonglin and ask for Su Yonglin's experience.

Craftsmen will also write down their contributions based on the size of their contributions, get opportunities for promotion, and receive generous material rewards.

This is the reward mechanism set by Su Yonglin for the craftsmen of the Ministry of Works. The emperor is not short of hungry soldiers. Su Yonglin knows the importance of science and engineering to the country, so there are science and engineering exams in the imperial examinations.

Students who have passed the exam will also enter the Ministry of Works to study brand new technologies. At present, more than 30% of the craftsmen in the Fireworks Department are from the imperial examinations, and the rest are traditional craftsmen.

As time goes by, the entire Ministry of Industry will have high qualities in the future, the ability to organize and inherit, and have scientific thinking, not just relying on experience accumulation to promote scientific progress.

The treatment of craftsmen in the Ming Dynasty was quite good. From the beginning of the establishment, they already had the status of officials and will be promoted based on their respective contributions and achievements in the future, and rely on their technology to become brand new technical officials.

If you have good invention and creativity and make great contributions, you can even get normal national rewards like civil officials and military generals, stand out and shine with your ancestors.

Su Yonglin smiled and encouraged them and asked them to continue their efforts.

However, Su Yonglin was not satisfied with the current situation.

Since the quality of steel barely meets the standards and has produced a leap in quality, we must continue to promote the production of qualified steel, promote the continued increase in the quality of steel, and also promote the production of more model artillery.

Su Yonglin felt that he could start to advance the firearming of the army.

"This type of artillery is powerful and good at attacking, but shorter than maneuvering and rapid fire. It is not very useful in addition to attacking battles, so I hope you can also develop lighter artillery with an increased rate of fire, such as this."

Su Yonglin took out paper and pen, drew a picture according to the style of the Franchise cannon in memory, focusing on the setting of his son-and-mother gun, introducing the concept of fixed ammunition, and informing the craftsmen of the concept of the son-and-mother gun.

Su Yonglin hopes that this type of artillery can be maneuvered with the large army and can also be used when the army is fighting in field.

The weight is relatively light, and you can move with the army through a wooden wheel. When fighting, you can load and launch relatively quickly, causing a blow to the enemy's military formation within a certain range.

"The current combat mode of the army is mainly military formations, and the army forms a military formation to attack and fight each other. Therefore, although the artillery cannot fire the explosive Thunder God cannon, solid iron bombs can destroy the enemy's military formation. Think about that scene."

Su Yonglin described the way the artillery fired solid iron bombs to destroy the strict military formation.

An iron bullet roared towards the enemy's military formation and penetrated directly through the military formation at super high speed. The scorching aura and powerful explosion energy would tear all the flesh and blood body blocking it.

As long as you hit it once, you can basically destroy a dense army.

This is the exclusive ability of artillery, and the existing powerful long-range weapon catapult cannot do this.
Chapter completed!