Within a month, Wang Li continued to use the materials he brought to carry out experiments, in addition to the materials themselves, and carried out secondary processing of the entire materials.

That is, a material that is strong on the outside and can prevent corrosion by seawater.

"Hey......" Looking at the results of the experiment, Wang Li shook his head helplessly again. Still take this ocean too lightly......"

Although Wang Li does not understand his chemical properties for the time being, one thing is certain, the essence of silver has changed, so it can be proved that silver is not suitable for plating.

And gold is doing well, but how much gold does a ship cost? This material is too expensive to use, and it is still a thin layer, and it is not sure when it will be washed away.

I tried various other materials, such as aluminum, and the reaction of aluminum was also good, but the problem still existed.

Of course, the biggest question is how to stitch it.

That's the most important thing, whether it's artillery or other steel products, there is only one form of manufacturing for all the items at the moment.

Foundry.

That is, the material is fired into molten steel, poured directly into the abrasive tool for one-time molding, and then improved by grinding or plating.

This method can be used to make artillery, but also to make horse-drawn carriages, to make trains, these are not problems.

Even if the seal is not tight, it is nothing more than drilling the wind, smearing some adhesive layer, this problem can be basically solved, if it really doesn't work, just after assembling, sprinkle some molten steel, and use molten steel to dissipate these gaps.

However, this method cannot be used for shipbuilding, because the ship is a whole, unlike the train, although it is also composed of many parts, but they themselves have a lot of fixed slots, and the later use of molten steel to plug the leakage is just to do some beautification treatment, or to make the train more perfect.

But for warships that need to be washed by the sea at any time, this method is very unreliable.

In addition to the inability to guarantee the safety of the hull structure, there is also no guarantee that the hull will not leak, and this is not at all a problem that can be solved by pouring molten steel.

Therefore, in addition to the material problem, Wang Li also needs to solve another thorny problem, how to use splicing, so that the hardness of the two steel plates after connection is like a complete steel plate.

But after thinking about it, Wang Li felt that this question seemed a bit difficult.

However, in the dark, Wang Li always felt as if he had seen this way in some places, but where he saw it, he couldn't remember it for a while.

"Wang Gong, how's the situation?" After learning that Wang Li had completed the test and had used up the materials he brought, Wang Xuance hurried over, and he was also anxiously waiting for the news.

"The situation is very bad, there are no materials that can prevent the corrosion of seawater, even if some materials can be wrapped externally, but the cost is too great, silver is not suitable, gold is too expensive, copper is cheap, but it is not affordable to use on battleships, aluminum is barely enough, but the problem is that it is not conducive to bonding. The other thing is about the splicing of the hull, which I need to think about, but so far, I don't have a good solution. Wang Li shook his head and directly told Wang Xuance the answer.

There is no benefit in concealing such things as technology, what can be done is what can be done, and what cannot be done is not done.

If you use any technical means, you can only harm others and yourself in the end.

"That is, if we want to build a ship with steel, we need to face material problems and splicing problems?" Wang Xuance frowned, it seemed that there were only two big problems to face, but everyone knew that these two were the most fatal problems.

As long as these two problems are solved, the safety of the battleship can be guaranteed, and even if it loses power, it can float on the sea and not sink, but if these two problems are not solved, sooner or later the ship will sink by itself.

A ship built at such a great cost sank on its own without being sunk by the enemy? So you're still playing with Maomao?

"I think we have fallen into a misunderstanding, first of all, the problem may not be in the material itself, because it is steel that will rust, but there is a way to avoid iron rusting, even if it is rained, he will not rust." Wang Li said.

"What's the solution?"

"This method is not suitable for shipbuilding, and every soldier knows this method, ask them how they maintain their equipment on weekdays, and they will know this method." Wang Li shook his head and said.

"Rubbing oil?" Wang Xuance was stunned, he also followed the army, fought Tuyuhun, and conquered Gaoshan Prefecture, although he did not personally go to the front line to kill the enemy, but it was not uncommon to see how those soldiers maintained their equipment.

If you don't use a knife, it will rust, and if you use a rusty knife, it will be very laborious to use it again.

If you don't clean it up immediately after use, put it in the scabbard and take it out tomorrow, there will be a thin layer of rust on it, and the impact will not be great in a short time, and it will even pose a greater threat to the enemy.

But no soldier would do that, because it was also a great threat to their own weapons.

Therefore, every time they come down from the battlefield, the soldiers will first wipe the war knife with a damp cloth, and some even wash the blade directly in water, and then wipe it with a dry cloth to confirm that there is no water, and then gently rub a layer on the knife with a cloth dipped in oil.

There are no special rules for oil, any oil can be used, but there is not much oil that can be used on the battlefield, most of them are animal fats made by the guys with fat, some of them are kept for eating, and some of them are used to maintain equipment, and the next time they want to use it, they don't need to wipe it clean, they can be pulled out directly and go to the battlefield.

Rubbing oil can prevent rust, but the problem is that the environment in which the knife is used is on land, even if it encounters rain and snow, it is only short-lived, and it can be maintained in time, and it is fundamentally different from the battleship, and the two are completely the same.

'Smack......'

Wang Li slapped his head violently and secretly scolded himself for being stupid.

"Wang Gong, what are you?" Wang Li's actions stunned Wang Xuance.

"Hey, now that the conditions are good, I forgot the method left by my ancestors, blame me, blame me." Wang Li laughed and blamed himself, but the self-blame was only on the lips, judging from the appearance, but he couldn't see any form of self-blame, "Regarding how to splice this problem, I think I already have a way to solve it, and then I just need to test it, if nothing happens, at least more than seventy percent sure." ”

"Huh?" Wang Xuance's face was confused, he hadn't been in contact with people who were engaged in technology, but the people from the Academy of Sciences had been in contact for the first time, and he originally thought that Wang Li was no different from the engineers here, but today's successive abnormal actions made Wang Xuance confused.

"Huh!" Wang Li smiled, didn't care about Wang Xuance's abnormal eyes, and explained directly: "Actually, the ancestor has long told us how to splic, and we have been using this method before this. Of course, due to his age, Special Envoy Wang may have had less contact with this aspect, but if Special Envoy Wang had paid attention to this aspect before, he would have heard of this method. In the past, knives were made of iron and steel. ”

The word iron has been around for a long time, but the word steel was not very loud before that, and it is more called by the more powerful names of fine iron and dark iron, but to put it bluntly, it is a piece of steel.

Wang Xuance nodded, he really didn't have much contact with this, but he did hear about it.

"In the past, it was because steel was not easy to obtain, and Datang had a large number of soldiers and generals, and a large amount of equipment was needed, and the output of steel could not meet the needs of the soldiers at all, so it could only be solved by using the blade as steel and the blade body as iron, this iron-clad steel method was solved, but these are two materials with different hardness, and how difficult it is to make them one? But the ancestors solved it, that is, heating, forging, and repeating, and they were rigidly connected. As for the problem of hull splicing, it can also be used in this way, but the process will be very difficult, and a lot of blacksmiths will be used, but in any case, this problem can be solved after all. Wang Li kept explaining.

The reason why I forgot this method left by my ancestors was not because Wang Li was floating.

The reason is that with the development of iron-clad technology, the output of steel can be controlled, and if necessary, they can stop producing iron and go all out to produce steel, so there is no need to use iron-clad steel to build equipment in a complex way.

Now the equipment of the Tang Army is made of stainless steel, and the strength is much stronger than before.

Of course, this is only for the military, and steel is still a rare thing in the people, so most of the blacksmiths in the folk still use iron-clad steel technology.

Whether it is a farm tool or a kitchen knife, it is used in this way, although it is troublesome, but the price is cheap and acceptable to the people.

"Then ask Wang Gong to test as soon as possible, I will order someone to prepare the materials urgently, and it is one that can solve a problem, and now what we lack is time." Although Wang Xuance didn't understand, he had heard of it, and Wang Li also said so, so he was naturally full of confidence in it.

However, Wang Li shook his hand: "Don't worry, this test is still from small to large, the preliminary test can be completed in a few days, but about the rust prevention problem, I can't do anything about this, but the matter of wiping oil provides us with another idea, is it possible to find something similar to oil, which can make him stick firmly to the steel, and at the same time prevent the steel from rusting?" ”