The first lord of the poor family

Chapter 368 Test Cannon
In the blacksmith's workshop, the fire in a boiler was burning very brightly.

The wind is biting outside, but the heat inside the workshop is unbearable.

The craftsmen were wearing thin clothes and were still covered in sweat.

Some people even work topless.

A mold made of wood with a smooth, slender copper rod in the center.

"Sir, the iron has been heated. Do you want to start casting now?" the leading craftsman asked.

Lin Hai nodded: "Start casting, please be careful.

Don't hurt anyone. "

Casting such a large cannon has failed several times.

In order to increase the accuracy of the artillery, a copper core was used in the middle.

Several craftsmen carried the iron juice to the mold.

Carefully pour into the reserved pouring spout.

Lin Hai watched the craftsmen's operations and became very nervous.

Such large casting parts can easily produce cavities and blisters.

Any defects may cause the barrel to explode when firing.

After all, such a large cannon uses a lot of gunpowder.

If it explodes, it will cause huge casualties.

The quality requirements for cannons are very high.

After all the iron juice was poured in, the wood mold began to burn.

The craftsmen quickly wrapped it with wet cloth.

If you water it now, the cast iron will become very brittle and the rapid cooling will cause it to crack.

The material of the cannon has very high toughness requirements, and the process requirements do not allow for any mistakes.

After a while, the red iron juice slowly turned into black and was completely solidified.

Then carefully pour hot water on it to lower the temperature as quickly as possible.

Then open the wood mold.

"The appearance is quite good. It seems that the method mentioned by the adults is completely acceptable." The master craftsman was extremely pleasantly surprised.

Lin Haibie walked up and inspected carefully.

No trachoma holes were found on it.

"Well done, put it in the fire and take out the copper core inside."

Dozens of people worked together to set up the cannon with long pieces of wood.

Placed on top of the huge stove.

Someone pulled the bellows hard, burning the cannon red again.

The melting point of copper is much lower than that of iron.

Soon the copper inside melted first and was easily taken out.

Then turn off the heat and cool down.

Placing the cannon in kerosene will increase its toughness after quenching.

Lin Hai was observing the smoothness inside the barrel.

It's very smooth inside.

Very satisfied with this.

"Yes, after several attempts, we finally succeeded." Lin Hai was also very excited.

Casting such a huge barrel is very troublesome.

In the past, sand casting was used, which would produce a lot of trachoma, and there was not enough pouring material in some places.

This will cause the wall of the gun barrel to be extremely thin and cannot meet the usage requirements at all.

After thinking about many methods, I finally found a suitable casting process.

And this casting process just loses some wood.

Copper can also be recycled.

At most, the craftsmen would just have to spend more time polishing it smooth.

The first cannon cast had a caliber of 130 mm and a weight of [-] kilograms.

With such a thick-walled barrel, even if it is fired continuously, it will not explode.

After polishing the barrel, we began to test the power of the cannon.

In order to keep it secret, a no-man's land was designated outside the city.No one is allowed inside.

The cannon was placed on a cart and required two horses to pull it.

The cannonballs are also made of solid iron lumps, which are also cast and then polished smooth.

In order to reduce the wear and tear of the cannon, a layer of copper was specially coated on the iron ball.

This increases the life of the cannon.

You must know that the smaller the gap between the cannonball and the barrel, the better the sealing.

The cannonballs must travel farther and be more powerful.

Casting a cannon cost Lin Hai thousands of taels of silver. For such an expensive thing, he must try his best to extend its service life.

Under the strict protection of the guards, the cannon was pulled outside the city.

Remove the cannon, set it up, and aim it at a distant target.

Put in the gunpowder calculated in advance and load the cannonball.

The fuse was lit, and the artilleryman quickly dodged.

After all, it was the first time to fire artillery. In order to prevent accidents, the artillerymen were not allowed to stand too close.

A moment later only a huge explosion was heard.

Even the earth felt a slight tremor.

A cannonball flew out of the barrel.

Everyone stood up and looked up in the direction where the shells flew.

Although it didn't hit the target, the range was beyond everyone's expectations.

"Hurry up and retrieve the cannonball, and then measure how far it hit." Lin Hai ordered quickly.

The shells had already flown out of sight, and their range was far beyond that of the artillery.

This means that even if enemy troops are discovered at a long distance, they can be bombarded without their knowledge.

Using this kind of cannon to attack or defend a city is simply invincible.

This is not yet able to use the cannon to its maximum effect.

If you put the cannon on the ship, you can see farther.

Capable of bombarding enemy ships miles away.

Apart from tornadoes, there are no other opponents on the sea.

When the time comes to attack Goryeo, we can attack the enemies on the shore even from the ship.

Within the range of the cannon, the safety of your own people can be completely guaranteed.

After a long time, a scout galloped over on horseback.

He said with great excitement: "Master Qi, the cannonball landed four miles away.

It can reach at least eight thousand steps away. "

Hearing this number, all the soldiers present were shocked.

Who else could be Daxia's opponent at such a long distance?

Yuhuashi and Lin Tiangui stared wide-eyed and did not react for a long time.

"Eight thousand steps away? Did you measure it wrong?" Lin Tiangui asked loudly.

"That's right, the shell hit the ground and made a big crater. We measured it from where it landed." The scout said with great excitement.

“My lord, don’t be anxious, this can only be said to be the farthest range.

Even if it can reach this far.Accuracy is definitely not enough.

We still have to try more to see how far the effective range is.

And you have to know how to adjust the muzzle to accurately hit the enemy. Lin Hai explained with a smile.

"Then let's test it quickly. We must build more of such powerful weapons.

With such powerful weapons, any enemy is no longer our opponent. Lin Tiangui said extremely excitedly.

Never in my wildest dreams would I have imagined that something that seemed to be made of iron could be so powerful.

"The next shot is to test the power of the shells, and I have already asked people to build the wall in advance.

This kind of wall is built according to the standards of a city wall.

See if you can penetrate the wall with cannonballs. "

Lin Hai asked people to aim the cannon at the far wall and prepare to test fire it to check how powerful it was.

(End of this chapter)