The huge hydraulic overturn rotates slowly, driving the huge gear here to rotate, the big gear is connected to a very small gear, and the gears are tightly connected to each other, and the big gear turns once, and the pinion can rotate dozens of times.

Iron Bull had an iron shaft more than a meter long and a thin grinding wheel mounted at the other end in the round hole left in the middle of the pinion.

The pinion and the thin grinding wheel are equivalent to using a bearing, the pinion turns a circle, the thin grinding wheel will rotate once, once the waterwheel is released, the big gear begins to rotate, driving the pinion to rotate rapidly, and the thin grinding wheel at the other end also rotates.

Iron Bull took a rusty iron rod and put it on the thin grinding wheel, the rapidly rotating thin grinding wheel rubbed against the iron rod, making a sneering sound, countless sparks splashed, and soon the rust disappeared, revealing pig iron that emitted a cold light.

"Chief, you see, in this way, the nails will be sharpened much faster." Tie Niu's face was a little red, and he looked at Chu Nandao shyly.

Chu Nan took a closer look, although it was very rough to make, it was also forgivable, after all, it was something that was made quickly, and if they were given time to debug it slowly, they should be able to build it better.

"What would you do if you wanted to stop?" Chu Nan looked at the thin grinding wheel that was still spinning rapidly and asked.

Teniu scratched his head and said, "I haven't thought about this yet, you can operate it according to the blower used for ironmaking first." ”

Chu Nan smiled, didn't speak, came to the bracket that supported the pinion and the thin grinding wheel, and with a slight phase change, the two gears separated, and the rapidly rotating thin grinding wheel and pinion slowly stopped.

"Can you design a design here that allows the two gears to be separated and closed at any time?" After Chu Nan finished speaking, he looked at Tie Niu with a smile.

Tie Niu thought about it, patted his head and said, "Why didn't I think of it?" Or the chieftain is powerful. ”

The stone was slapped on the ground, and then scolded angrily: "You still need to say, of course you are not as good as the chief?" Why don't you hurry up and thank the chief for his advice? ”

Tie Niu fell to his knees and said loudly: "Thank you for the chief's advice, my Tie Niu will do things more seriously in the future, please rest assured." ”

Chu Nan smiled and said: "Okay, get up, you will do things in the future, not only to innovate thinking, slowly improve various production links, but also to pay attention to quality, just like this grinder, you have to keep improving, do more meticulously, do more stable, if there is a strong wind or heavy rain, it may collapse, so, we must pay attention to the foundation, only when the foundation is solid, can we build a Wanzhang building." ”

Shi nodded and said, "Please rest assured, Chief, we will definitely do things seriously, by the way, Chief, let us see what we are going to do with boiling water?" We still haven't understood what you mean, so please ask the chief for some advice. ”

Chu Nan sighed and said: "Actually, my requirements are too high, with the current industrial base, let you get in touch with these things, some too early, not only the quality of the steel is not up to standard, but also the accuracy of processing is not up to standard, even if you know the principle, you can't make a qualified steam engine." ”

"Steam engines? What's that? The stone tilted his head and thought about it for a long time, but he didn't come up with a reason.

Iron Bull snored and said, "Please explain it to us chieftainly, we will definitely work hard to complete it." ”

The others also looked at Chu Nan eagerly, Chu Nan knew that these people were not five minutes of heat, they really wanted to make some achievements, but he also knew in his heart that the current industrial base was too backward, although he had guidance, but many things needed to be done slowly, and it was impossible to achieve it overnight.

It is not as good as alloys, and only now that more than 100 alloy ratios have been tested, and the properties of them have been recorded, and this ratio is not accurate, because there is no pure iron and other elements, and they are all experimented by rough estimates.

The most disappointing thing is that the vast majority of the results in these experiments are the same, only a few changes are slightly larger, but there are no qualitative changes.

If the most suitable alloy ratio can be matched, Chu Nan is confident that the sharpness and toughness of the Tang knife made will be increased several times, so that the real iron is like mud, but the distance is still too far.

The other is that there is no thermal insulation material, and when making iron, the heat of the blast furnace is limited, so the molten iron is still not perfect, and now it can only increase the thickness of the furnace wall to solve the problem of excessive temperature, because there is no refractory and high-temperature resistant material until now.

Therefore, a lot of things need to be accumulated little by little, although he has a lot of knowledge beyond this world, but the production conditions of this world are too backward to keep up, which he can't rush to come.

He knew very well in his heart that in his previous life, Huaxia Kingdom was because the industrial base was too poor, and many technologies were restricted, even if he could imagine it, the principle could be understood, but it couldn't be made, what was the reason? It is that the basic accumulation is not enough, the Ministry of Basic Science is not solid, basic science is the foundation of all scientific and technological innovation, at the beginning may not be felt, with the development of science and technology, you will find that the basic industry is the foundation, otherwise, the high-tech developed by theoretical principles can not be realized at all, it is a castle in the air, it sounds very beautiful, but if you really want to realize, it is difficult to climb to the sky.

In terms of high and new technology, in order to catch up with other countries, the Chinese country took some wrong paths, and finally made up its mind to awaken and develop basic industry, pay attention to the investment in research and development of basic science, and start from the heart step by step, and finally after decades of catching up, with the hard work of the Chinese nation, it finally surpassed all countries, reached the commanding heights of scientific and technological innovation, and firmly controlled the most advanced science and technology.

This is a bloody lesson, it is impossible for Chu Nan to forget, not to mention that there is still time now, it is even more impossible for him to rush for quick success, so it is natural to lay a solid foundation and continue to develop, so that it can be long-term.

Therefore, basic science is very important, the more solid the foundation laid, the farther it can go in the future, this is like the legendary cultivation of immortals, the more solid the foundation, the greater the achievements in the future.

Chu Nan didn't say anything, but made a model out of clay, and then gestured again: "Do you understand?" As long as there is constant fire and water, and the water in it keeps boiling, it will continue to provide power, and once we do that, we don't have to limit ourselves to the river, and we can also build factories in other places, carry out large-scale production, and even install them on cars, and other things, you can think about it, and I will talk about it first. ”

After Chu Nan finished speaking, he left a little lonely, and only now did he realize that there was still a long way to go from his expected production level.

Stone, Tie Niu and the others did not leave after Chu Nan left, they all looked at the model on the ground and the simple metal polishing machine made just now, this kind of thing can already be called a simple machine.