I don't know when it started, but a beautiful landscape appeared in the Academy of Sciences.

At the gate, the proud son of more than 20 days, the members of the chemistry class who were regarded as treasures by the emperor, actually lined up in a long row, facing the palace wall, facing the wall and thinking about it......

What the?

That's it?

Of course not, everyone's head is pasted with their review book.

A day or two is nothing, but these people have been standing for a month, which scares the guys in the Academy of Sciences.

"Isn't that from the chemistry class?" Lao Xu just came back from outside, and he happened to see the chemistry class students who were thinking about it on the wall, and he couldn't help but be stunned.

He has a deep memory of this chemistry class, and the question of how many talents has been troubled by them has been accidentally brought out, and there is more than this, so to speak, everything they have made there can be used, and everything has great use.

The problem is that some things have been tested and found to be of known use, while others have not yet been identified, but from experience, they must not have found the right place.

Don't look at the age of the members of the chemistry class, but in the Academy of Sciences, they are definitely not to be offended.

Let's not talk about their identity as a protégé of the Son of Heaven, which department is not running to them every once in a while? Let's see if you can exchange it for something you can use?

"Teacher, it's the chemistry class, I've been standing there for almost a month......" Jiang Tian nodded, he came back a few days earlier than the teacher, and he also knew something about this matter.

"One month...... What did they do wrong? Lao Xu was stunned, a month's punishment is not a trivial matter.

The most lacking thing in the Academy of Sciences is time, and as long as it is not a mistake of principle, no one will punish it in this way.

But obviously, only the emperor can make this decision and make them so embarrassed, and no one else can, including their dean.

"It is said that it is because they discovered a new material during the test, which can carbonize the wooden stick, and can also easily remove the rust on the steel, and the operation was not carried out in accordance with the safety regulations, and it happened to be caught by His Majesty, and then it was ......" Jiang Tian said roughly, and then continued: "Now no one in the Academy of Sciences dares to take the safety regulations to heart, I heard that the dean's hair has fallen out recently, and this month's test funds have increased by six percent compared with last month." ”

Well, it seems that the dean's good days are coming to an end......

Wait, rust removal?

"Didn't you order this new material?" Lao Xu subconsciously thought, isn't his problem in rust removal?

The boiler is very powerful, but now there are many problems.

The biggest headache for them is rust, because the boiler is used in a harsher environment, not only does it need to be in contact with water for a long time, but the temperature often reaches hundreds of degrees.

The situation in the boiler body is better, and the most serious problem is the part of the air duct.

Water vapor provides pressure, pressure conversion power, but water vapor itself is with a lot of water, if you have been soaked in water, the situation will be better, but in a wet and dry environment, often a few days, a large amount of rust will appear in the trachea.

In the most serious case, the air ducts of several trains were even penetrated by rust, which directly led to the scrapping of the air ducts.

And this situation is difficult to check, and when there is no problem, it is difficult to find out.

Now the only way is to replace the air duct regularly, and the other is to let the train master clearly remember the reaction of each link, and rely on manpower to sense whether there is a problem with the train.

But this method is simply unreliable, and the requirements for people are too high, not to mention those who build trains, and even those who build trains are difficult to master this technology.

This time, Lao Xu took the team to follow the train for more than a month, wanting to feel it for himself and see if he could find a solution.

The solution is not nothing, after changing the material, and the material can be replaced, the restriction is even more serious.

High cost, scarce materials, as well as processing technology limitations, and the hardness of the material itself.

Therefore, Lao Xu basically affirmed a fact.

The material is still the most suitable steel, and the biggest problem at the moment should be to find a perfect anti-rust technology.

To this end, Lao Xu has submitted a research on a new type of steel with anti-rust function, but it is unknown when it will be studied.

Before that, it is necessary to find a more reliable technology for rust removal.

Painting? Yes, but it's unreliable to use on boilers, and the rust is inside-out, which is very uncomfortable.

"Everyone is here, do you want to come or not......" Jiang Tian pointed to the chemistry class students who had been thinking about the wall under the palace wall.

……

Acid is a good thing, it's very lethal and it's very harmful, but it's just as effective.

Sulfuric acid is an important industrial raw material, and its role covers countless industries, such as chemical fertilizers, drugs, explosives, pigments, detergents, batteries, purification of petroleum, metal smelting, and dyes.

The students made sulfuric acid, which is definitely a great thing for Li Yuanji.

Although he was punished for not paying attention to safety measures, in his heart, Li Yuanji would rather not have sulfuric acid than not pay attention to their own safety.

The effort, cost, and resources required to cultivate a talent are far more than anyone can imagine, and this cost is still increasing.

If you add up the training cost of all the people in the Academy of Sciences, it is enough for the current Datang 800,000 troops for ten years, and the Academy of Sciences is only a few thousand people, and on average, each person is worth at least a thousand, or even more.

Of course, as the originator of chemistry, although Li Yuanji rarely conducts experiments, there are times when it is time to do it, and he will not be stingy.

He didn't do it because he didn't know, he didn't understand, so he had to pretend to be profound, and he did it because others didn't find out for the time being, and he couldn't wait, so he would do it.

In a small venue, Li Yuanji was constantly experimenting, from an emperor to a scientist, Li Yuanji only took a blink of an eye.

When several complete processed parts were taken out, Li Yuanji picked them up and looked at them carefully several times, and finally breathed a sigh of relief.

"It's done!"

Immediately, Li Yuanji was stunned again, and now it seemed that it was a little early, and he instructed: "Take these to the water and soak them for a day, take them out, put them in a dark place where the sun can be exposed to direct sunlight, and let them take a look for a few days." In addition, after sending some to Haizhou, throw them into the sea to test them. ”

"No!" Song Zhong hurriedly agreed, and immediately ordered people to do these things.

Scientists are also divided into three, six, nine and so on, and Li Yuanji, a scientist, is obviously the highest-level scientist.

Except for the last step, which needs to be picked up and carefully observed, the whole process, from the beginning to the finished product, does not pass through his hands in between.

It's not that Li Yuanji doesn't want to touch it, but the guys led by Song Zhong and Ma Wu refuse to let Li Yuanji touch it, and even if they get close to observe, it can only be a small moment, and he is not allowed to stop for a long time.

All the operation processes are in charge of the forbidden soldiers, and all Li Yuanji needs to do is to tell them what to do, and do a good job in commanding the post.

Of course, there are also people making detailed records, the time required for each step, the state when entering, the state when leaving, each step is divided into five stages, the reaction of each stage, etc., the whole process is recorded in detail, once successful, this record can be directly used as a production process.

What is the best way to prevent rust? It's not the material itself, because in some cases, only one material is perfectly suitable.

In this case, galvanizing has become the only indispensable process for rust prevention.

Although it has a certain relationship with the material itself, without the link of galvanizing, the service life of the entire component will be reduced by at least two or three times, or even more.

When he was a child, Li Yuanji once came into contact with galvanizing, not to do it himself, but there was a galvanizing factory near his home, and several partners often went there to play naughtily, and saw how the workers operated.

But that one is electrogalvanized, and now there is no electricity, so it can't be done.

Li Yuanji remembered that when he was a child, he heard adults say that there was such a thing as hot-dip galvanizing, and the steps were only roughly said, not in detail, but no matter what, everything is the same.

It took Li Yuanji a month to finally figure out what was going on with hot-dip galvanizing.

Electrogalvanizing is very simple, simple pickling, then grinding, completely removing the rust on it, making it shiny, and then electroplating, and finally polishing, the whole process is completed.

Hot-dip galvanizing is relatively troublesome, pickling, washing, then drying (before that, it has to be soaked in solvent), followed by hot-dip galvanizing, that is, heating the zinc to make it a solution, feeding the parts, and then automatically drying it.

Li Yuanji has enough reason to believe that the whole process will not be so simple, but there is no way, he is not a real scientist, and he has not really participated in this work, so he does not know about it.

The time of hot-dip galvanizing is a bit long, and what the adults said in my memory is not like this, so Li Yuanji also knows that he must have ignored a link that he doesn't know, but it doesn't matter, the process steps have been studied by himself, what do you want those scientists to do?

Well, Li Yuanji found a fig leaf for his weak knowledge.

"We gave it to the chemistry team and asked them to find a material that would help the parts be hot-dip galvanized quickly, and at the same time, the results would not be bad." Li Yuanji said without pressure.

Even if the plating agent is not made, the problem is not big, it is nothing more than replacing the parts every other year and then re-applying the hot-dip galvanizing treatment, no matter what, it is much better than now.