Mirror welding is indeed not simple, it can be said to be a proper black technology, although later generations also have this concept, but at most it is still in the laboratory stage, can not be used in large-scale industry, especially shipbuilding, this heavy industry, can not do.

In later generations, it is enough to reflect the level of industrial science and technology of a country, and we in China only did it after 2017, which shows the great technical difficulty.

In later generations, Little Japan always showed off its precision machining level on online videos, made hollow engravings, and then embedded them so that they could not see a trace.

It is undeniable that they do have the ability to brag, but mirror welding is to be done on this basis, so a large piece of armor, and not a plane, but an irregular arc, how to make the two mirrors match is a big problem, not to mention in the actual assembly, how to ensure accuracy.

That is to say, as long as the technical department does it, it will leap beyond the level of precision technology in later generations, no matter what high-tech precision instruments and equipment are used in later generations, it can be done and cannot be done, it is as simple as that.

Mirror welding has many benefits, but Yang Wenli is a little self-seeking trouble, after all, at this time, the science and technology of all countries in the world are far behind, just surpass other countries, and it is the same crushing as much as it is, no different.

But sometimes, it is the self-seeking troubles of scientists and the constant challenge of scientific difficulties that are the driving force behind the progress of human science and technology.

It seems that shipbuilding is about to begin, but there is one important weapon on the frigate that has not yet begun to be developed, that is, the 76-mm twin naval gun.

The naval guns of World War I and World War II were all giant ship cannons, at least more than 100 mm caliber, that was still close defense artillery, and the main guns were more than 200 or 300 mm, and they were changed to small-caliber guns in modern times.

That's for a reason, the cruisers and battleships of World War I and World War II are all big guys with thick skin and thick flesh, and the naval guns are small and can't be broken, like scratching.

In modern times, because of the long-range ship-launched missile, no matter how thick the skin is, it is useless, so the maneuverability and speed of the ship are emphasized, the armor is greatly reduced, and the small cannon in the bow can also cause damage to the enemy's ships in close combat, so that the naval gun should not be too large.

In the present era, the opponents of the navy of the Far Eastern Kingdom are all weak chickens, and they are all wooden ships, and even the ironclad ships will only be available more than two hundred years later, and the power of the 76-mm rapid-fire gun is enough.

After Yang Wenli returned to the office, Wang Rucheng was summoned, and as soon as Wang Rucheng entered the house, he wanted to pay a big salute but Yang Wenli stretched out his hand to stop him: "Excuse me, in the future, in informal occasions, we will talk less red tape and etiquette between our monarchs and ministers, and it is important to do the right thing." ”

"Thank you, Your Majesty!" Wang Rucheng still bowed and thanked him.

"Ru Cheng, it looks like the ship is about to be built, and you have also seen the design sketches of the ship, but the design of the twin 76mm naval guns in the bow and stern has not yet begun.

You are the big steward of the industrial area, and this extra task is left to you. ”

"No problem, Your Majesty, this is a matter for the ministers." Wang Rucheng patted his chest and agreed.

"Hmmm! I'll tell you about the requirements, you can remember it.

Although the caliber of this twin-mounted naval gun is only a little larger than that of the field cannon, the reason why the naval gun is called a naval gun is naturally different from the technical requirements.

First of all, the barrel is about one-third longer than the field cannon, and we now have high-quality special steel, and I believe that there is no problem in terms of materials, and we can also make this kind of long-barreled barrel.

In addition, there is sufficient power on the ship, which is not as good as the army fighting in the field, so we can install a hydraulic power assist system for the naval guns, and the volume and weight of the twin naval guns are much larger, and with the hydraulic power assist system, the physical burden of the artillery can be reduced, so that it can fight more prolonged.

However, there is a small problem here, that is, there are two gears required, the high-speed gear accelerates the aiming speed of the naval gun, and the low-speed gear is finely adjusted, so it must be a stepper motor, or add two gears, or adjust through electrical signals, in short, these two gears must be both fast and finely controlled.

The upper and lower firing range can be within 60 degrees, but the left and right firing range must be 180 degrees, that is, it is necessary to ensure that four naval guns can attack at the same time on both sides of the ship.

The naval gun is required to be fixed, and can only be adjusted up and down, left and right, so the shock absorption and retreat performance of the naval gun must be excellent, because it is a fixed gun, the gun body can be appropriately enlarged, we can add a stationing machine, the gun barrel is erected on the stationing machine, the stationing and retreating machine can be spring-type, or hydraulic, or air-type, which stationing effect is best and more stable, choose which.

In order to increase the speed of the gun, it must be self-loading, and at the very least, there must be an automatic loader. In order to reduce the risk of explosion, the shell chamber is located below the waterline, and there are valves that can pour seawater into the shell chamber to extinguish the fire and prevent explosions.

In the shell room below the waterline, it was impossible to manually carry the shells onto the deck, and there had to be an automatic bomb lifter.

In the early days, the shell chamber could be manually loaded onto a chain-type automatic bomb lifter, and a chain was a pair of shell pylons, and the chain was driven by a motor, and the cycle was repeated.

The fully automatic bomb lifting machine is to add a chain in the shell room, the shells are loaded in advance, and the number of shells is fixed, and the chain is automatically lifted and lowered, and it is gone after the shot.

With an automatic loader, the principle of the automatic loader is not complicated, let's start with the shell firing.

When the shell is fired, the bolt is closed, and after the shell is fired, the bolt can be opened automatically, and it must be equipped with two motors, one is responsible for opening and closing the lock, and the other is responsible for opening and closing.

After the bolt of the gun door is opened, there is a lifting shell carriage under the gun chamber to rise, at this time the bomb lifter sends the shell to the top, the chain turns down, the shell rolls into the shell carrier, the shell rolls in and fires a switch, the carriage shrinks, so that the shell enters the gun chamber, and then there is a telescopic rod at the tail end of the carriage, which completely jacks the shell into place. At this time, the carriage sinks, the bolt automatically closes, and an automatic reloading process is completed at the same time.

We only need to set the switch smartly, even without electronic sensors, we can still achieve simple automation.

Ru Cheng, do you understand the principle of automatic reloading? ”

"Understood, the principle is not complicated, but it is very ingenious, almost ingenious, which can greatly increase the speed of artillery fire and reduce the configuration of artillery, so that even one artilleryman can operate a twin cannon."

"Hahahaha! No matter how science and technology develop, the key is to look at people, talent is the foundation of scientific and technological progress.

Good! To get back to the point, in order to reduce casualties, naval guns must be fully or semi-enclosed, and the artillery must have thick armor that is twice as thick as the hull armor. Because if the enemy hits the gun chamber, it may cause an explosion, and then cause a large explosion in the ammunition room, which is very dangerous, and must be protected with thick armor.

In fact, the entire ship, and only the naval guns and command cabin, must be protected by double-layer armor, and the rest of the non-important parts can be reduced as appropriate.

Don't talk about the importance of the command module, without the command, the ship will lose its attack power......"