Open an aircraft carrier to fight against Japan

Lin Yuan continued: "Everyone knows the reason for the demise of battleships. As for the reason for the demise of cruisers, after warships are widely equipped with radars and missiles, the original long-distance reconnaissance and interference tasks of cruisers have been replaced. The functions are almost the same, and the weapons equipped are similar, the only difference is whether to equip more or less."

"So in our time, apart from the United States and Russia equipped with Ticonderoga-class and Glorious-class missile cruisers, no other country has equipped cruisers, and the cruisers equipped by these two countries will also be decommissioned, and there is no follow-up shipbuilding plan."

"So the displacement of our navy's main battleship should not be too large. A full load displacement of [-] tons is enough. You don't have to worry about insufficient firepower. This tonnage is enough to hold more than [-] missiles with a charge of [-] kilograms. Three to four missiles are enough to sink a [-]-ton battleship, and one of our warships can fight against an enemy fleet!"

Lin Yuan continued: "According to our current situation, the Japanese and Russians are most likely to attack from the sea. In order to deal with possible wars, we first build four to five destroyers. Other military ships, such as We will build submarines and large landing ships in the future." Lin Yuan looked at Wan Ling and asked, "Wan Lao, is there any difficulty in the shipyard now?"

Wan Ling said: "It's not easy to explain clearly here, so let's go to the shipyard after the meeting, and we'll talk about it there."

Lin Yuan nodded and said, "Well, let's end our meeting today, Wan Lao, let's go to the shipyard together." Lin Yuan announced the end of the meeting, and then came to the shipyard, which is located near Lushun Military Port, and The naval base in Lushun is far away, and Lin Yuan can see a large factory building erected by the sea from a distance. Wan Ling pointed to those factory buildings and introduced: "Those are design centers, and those are processing workshops..."

Wan Ling pointed to a tall chimney and said, "Did you see that? That chimney is used by the boilers of the power plant, and the power supply in the shipyard is very sufficient now." After Wan Ling finished speaking, he pointed to the railroad tracks on the ground and said, "Our There are also railway tracks, and the raw materials outside the factory can be easily transported in.”

Wan Ling walked along the steel rails into the factory building, and said to Lin Yuan as he walked, "In fact, building a warship is also very simple, just build the skeleton of the hull with steel, and then install weapons on it. How to set up and how to install it."

As Wan Ling said, he led Lin Yuan into a spacious factory building. There were a lot of steel materials stacked inside. The shapes of these steel materials were different. Said: "This is where we store the raw materials to be processed. Some of them are steel, some are aluminum alloys, and there are other alloys such as tin bronze. These alloys need to be cut and welded to become the components needed for warships. Several processes are required before welding, and these processes are collectively referred to as steel pretreatment."

As Wan Ling said, he pointed to the door in the distance, where the rails came out from, and he said, "That's the steel pretreatment plant." Wan Ling led Lin Yuan there, and said as he walked: " Those stacked steels look straight, but in fact, it is just that the human eye’s resolution is not enough to see their bending. Those steels are unevenly heated during casting or subjected to temperature stress during storage. It's not straight anymore, so our first step is to straighten them, which is called 'straightening'."

At this time, the two came to the factory building outside. As soon as Lin Yuan came in, he saw a wide conveyor belt. Wan Ling pointed to the conveyor belt and said: "There are transport vehicles on the rails, and the transport vehicles bring steel from the storage room to here. There are cranes that pick up the steel and put it on the conveyor belt, and the conveyor belt sends the steel that needs to be straightened to the straightening machine.”

Lin Yuan saw a huge machine at one end of the conveyor belt, with two rows of sticks in it. Lin Yuan pointed to the machine and asked, "That is the straightening machine? Right?"

Wan Ling nodded and said, "That's right, that's the leveling machine. The upper and lower rows are rolls. The extrusion of the rolls straightens the uneven steel, and the steel passes through the leveler before entering the next machine." As he spoke, he walked past the straightening machine, walked along the conveyor belt to a bigger machine, patted it with his hand, and said, "Shot blasting machine."

"After the steel is placed in the air for a period of time, an oxide layer will appear on the surface. If the oxide layer is not removed, it will reduce the fatigue strength of the steel and shorten the life of the hull. Therefore, we remove the oxide layer on the surface. This shot blasting derusting machine, this kind of machine can spray out small iron balls at high speed and hit them on the steel to remove the oxide layer on the surface. After removing the oxide layer, and then apply a layer of primer, it can be officially cut , Welding into the required parts after cutting, and our problem happened at this time."

Lin Yuan asked, "What's the problem?"

Wan Ling said, picked up a drawing from the cabinet next to it, pointed to it and said to Lin Yuan: "Look at this drawing, it is a drawing of the ribs of the hull, and the ratio is [-]:[-]. During processing, this drawing Drawings need to be converted into one-to-one drawings, so that our workers can process the required shape on the steel, we call the process of converting drawings lofting, do you think this lofting process is difficult?"

Lin Yuan thought for a while and said: "I think the difficulty should not be small. I see that the parts on the drawings are all composed of curves and surfaces. When converting the proportions, it is difficult for workers to ensure that the converted curves have the same curvature as the original ones. The curves are the same, am I right?"

Wan Ling said: "That's right, in our era, there are fully automatic equipment controlled by electronic computers, which can realize mathematical lofting, and the accuracy is much higher than manual ones, but in this era, we don't have such equipment, so we can only rely on Humans are required to complete this step.”

"It's not just this step. After the lofting is done, there is only a blueprint. The final warship parts need to fall from the blueprint to the real thing, so we need the next step, to draw the cutting line on the steel. We call this process material."

Lin Yuan asked: "Both processes require manpower, don't they? What we lack are skilled workers, right?"

Wan Ling nodded, and Lin Yuan asked, "Then don't we have such skilled workers now?"

Wan Ling replied: "There are a few old engineers on the Beijing ship who used to work as stakeout workers in the shipyard, but the number is too small. If we want to build warships on a large scale, we can't do without a large number of skilled workers."

Lin Yuan thought for a while and said: "It is definitely too late for us to train ourselves, so we will gather all the domestic talents, first of all, Jiangnan Shipyard, which is a relatively famous shipyard, and Fuzhou Shipping Bureau, also It is the Mawei Shipyard, we will go there and get all the talents there.”

Wan Ling asked, "But how can you get them here?"

Lin Yuan replied: "Jiangnan Shipyard, there is no problem. I have a good relationship with Li Hongzhang, and Li Hongzhang asked me to build a navy when he was dying, so Jiangnan Shipyard is basically under my control, and Fuzhou Shipping Bureau needs I worked hard."