Overnight, the metal melting center has forged one-fifth of the marine alloy steel modules.

These modular steels do not need to undergo any machining, or water-fire bending plates like ordinary shipbuilding.

Twenty huge laborers have already begun to weld the hull of the super giant ship on the foundation of the load pile. With the help of two magnetic-assisted lifting equipment, they put together pieces of modular alloy steel and welded them with the most advanced welding technology that humans have not yet mastered.

If nothing else, the mere exposure of this welding technology can provoke the complete madness of the American industrial sector.

Welding is a very important technical topic in industrial processing.

The most common is arc welding, which is the kind of welding technology that holds a transformer and uses a welding rod to dot there. This welding method has a fresh trick and the feeling of eating all over the world.

However, in a slightly more advanced factory, this welding technique can only be used to weld some scaffolding and scraps. If you want to weld products, you should also use semi-automatic submerged arc welding or automatic gas shielded welding technology.

Once when Ye Qing recruited Juli laborers for the first time, the welds he welded with arc welding made Ye Qing shocked.

In the insider's description, the weld is beautiful, and there is a saying called fish scale pattern. It is that the welds are layered like fish scales, and they are very neat. This kind of fish scale pattern can only be welded by hand by the top welder masters. At the same time, the uniform and staggered welding lines also represent that the quality of this weld is very guaranteed.

The internal cracks of the solder joint are small and the strength is consistent.

If the master of dexterity comes, he can weld any desired pattern as he wants, and even paint with weld patterns.

The emergence of automatic welding technology solves the embarrassment of uneven welding technology of workers. The smooth automatic wire feeding mechanism and self-propelled guide rail ensure that the weld seam height is consistent between metal materials. At the same time, it is the only technology used to weld precision builds.

But......

They can't weld extra-thick parts.

Welding wire can only be welded on metal surfaces, which is a matter of common sense. However, very large machinery usually needs to weld more than 10 centimeters of metal thickness. If you only weld on the top and bottom sides, there is a gap in the middle, and the strength is much lower than that of the unwelded area. In the event of a collision or a violent movement, the metal will break.

This is especially fatal on a giant ship that needs to fight against the waves.

Therefore, in order to be able to weld the qualified ultra-thick parts, the engineers racked their brains and tried everything possible.

For example, when welding ultra-thick parts, first cut out the slope of two pieces of material to be welded, and then pile up and weld layer by layer. Before the more advanced welding technology, the masters who could master the welding technology of ultra-thick parts were all national treasures.

The thickness that can be welded is about large, the more it represents the rarity of this master.

With the development of welding technology, and mechanical motorization technology. Welding ultra-thick parts, there has also been a group of demons dancing around, a variety of non-mainstream technologies that everyone can master emerge in an endless stream, until later electroslag welding technology developed, dominating the rivers and lakes.

Electroslag welding, which can weld extra-thick parts, such as tank armor. Its principle is to reserve a gap of about 30 mm in advance during welding, and the welding wire slowly melts during welding, accumulates in the gap, and fills the reserved gap little by little.

But......

Electroslag welding can't weld the ultra-thick hull of the super freighter in front of you. Because the defects of electroslag welding are also obvious, the heat generated during welding is extremely large, and the welding time is long. When welding, the two weldments must be firmly clamped with a fixture to ensure that no thermal deformation occurs.

At the same time, a specific angle is required to ensure that the welding slag is accumulated in the reserved joint. This angle is best vertical, and if it is tilted, the maximum should not exceed 30 degrees, otherwise the welding slag will overflow.

Take a look at the ultra-high-speed cargo ship being welded in the Longxitan factory. The thickness of its armor in important parts is more than two meters. Most of the rest is between fifty centimeters and one meter, how is this welded?

How to fix the weight of tens of thousands of tons of super giant wheels, how to rotate to ensure that the weld is always vertical?

The Newport News shipyard is coming, and it is also going to cry collectively in the slipway.

The only non-mainstream solution is to cut out an inclination angle of less than 30 degrees at the welding place before welding, and use surfacing technology to weld semi-manually little by little. But the question is, not to mention that it is planned to be welded in a few years, how can this ultra-high strength armor material quickly cut out the slope?

After welding, how to ensure the overall strength of the weld without cracks, bubbles, and slag inclusions?

To ask this question, we must first understand how those dreadnoughts with armor thickness of 40 to 70 centimeters were made during World War I and World War II.

It's simple, people don't need welding at all, and they don't have that welding technology, so they directly splice thin armor layer by layer with rivets.

This is also the reason why the construction of a battleship can often take several years, and only certain workers can build it.

The strength of multi-layer splicing molding is naturally much worse than that of forged and rewelded shell armor in terms of strength and resistance to metal fatigue. It is also more time-consuming, and after World War II, this technology was phased out by the great powers.

The ultra-thick hull welding technology, which has caused headaches all over the world, was easily conquered by the Longxitan Shipyard, oh no, the Longxitan Shipyard.

Two car-sized 3D electron beam metal melting printing equipment are being attached to both sides of the ultra-thick armor magnetically. They rely on electron beams to bombard a special alloy metal powder blended by metal experts into a high-speed fluid between liquid and gaseous states in an instantaneous bombardment chamber in an internal vacuum.

The fluid is sprayed through a special nozzle into a gap in the module armor held by the magnetic robot.

The gap is only five millimeters wide, and the brilliant fluid ejected from it collides with each other like particles in a particle accelerator, and quickly cools and solidifies under the action of auxiliary cooling nozzles, adhering to the middle of the gap. Two electron beam printing devices are doing synchronous rapid reciprocating motion, like printers, quickly filling the gaps in the armor.

The armor is doped with cemented carbide, but these printed materials are super-cemented carbide powders carefully formulated by metal experts. After printing, this "weld" not only shows a perfect arrangement of metal crystals under the metal observation equipment, but also does not have any dark wounds and bubbles.

And the strength of the "weld" is even higher than the armor of this superfreighter.

This is the real top-level industrial technology, and Ye Qing dares to use a civilian super giant ship to compete with the confidence of warships. Of course, it's also surprisingly costly.

To put it mildly, the United States will not even be able to master this technology in another five or ten years.

…………

Another day passed, and in the Longxitan factory, this super giant ship was first sighted.

Starting from the bow of the ship, the purest alloy steel shell has been made up of a fifth. On the back of the alloy shell, there are strips of criss-crossed, like the alloy keel of a dragon.

In these alloy keels, a certain proportion of nitinol memory alloy is added. The industrial term metal fatigue will never exist in front of it.

Half past seven in the morning.

Ye Qing announced to the senior management that the research and development of the [electromagnetic engine] in the factory has entered a critical moment, and he will be stationed in the factory to keep an eye on this project in the past two days.

The company's affairs are very well arranged, and after arranging, Ye Qing deliberately went to get a new hairstyle.

Originally, Ye Qing had short black hair, but this time the sideburns on both sides were shortened, and the top was very layered, becoming the most fashionable and popular "airplane head" among young people at the moment, and dyed a little faint flax green that can only be seen in bright light.

Dressed in Prada's trendy men's clothes, with sunglasses that can change color at will, Ye Qing is now a handsome and young boy.

At ten o'clock in the morning, Ye Qing took a metal expert who looked like a bodyguard and came to Zhongyun Airport in a low-key manner. Instead of taking the private channel on an exclusive plane, you will take the VIP channel and fly first to the capital in first class before connecting to Japan.

The three-dimensional camera is Ye Qing's exclusive item and can only be used by himself, so Ye Qing wants to visit the aircraft carrier.

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