Armor Frenzy

The logistics group does not need a lunar rover, and the two lunar rovers are exactly one for each of the three groups.

Ye Han group returned to the temporary base, brought cutting tools, took the lunar rover to the ice lake again, found a place to park at random, wiped the thin lunar soil and moon dust on the surface, and the hidden ice layer exposed a corner. The headlights shone with the unique reflection of water ice.

Ye Han picked up a portable laser cutting machine and shouted: "Work has started, stay away!"

The reason for using a laser cutting machine is that as long as there is no problem with the power supply, this thing can work all the time. Although there is a problem that the beam is not easy to control, it is generally a good thing.

Ice is different from other substances. The lower the temperature, the higher the hardness of ice. In an environment of minus 50 degrees, the hardness of ice can reach 6 on the Mohs scale.

What is the concept of hardness 6? The hardness of iron is only 4-5, the hardness of stainless steel is 5.5, and the hardness of pure titanium and hacksaw blade is only 6!

If it is replaced with traditional cutting tools, I am afraid that the ice cubes have not been cut out, and the tools will be scrapped first, even metal products are no exception, only low temperature steel can be used in the extremely low temperature environment of the earth.

Note that it is used in the extremely low temperature environment of the earth, and the extreme low temperature of the earth is about minus seventy or eighty degrees, which is far from the low temperature of the lunar surface. Unless it is cryogenic steel, it can be used at more than minus two hundred degrees.

The problem is that any gram from the earth to the moon will cost a huge amount of money, and sending a pile of steel just to cut the ice is a bit too extravagant.

There are many similar situations, so there are very few physical tools in the temporary base. Any problem that can be solved by electricity will be solved by electricity!

The small nuclear reactor at the temporary base can be used for at least ten or eight years. Even if it does not generate electricity, it must always be running. Therefore, all problems that can be solved with electricity are not problems, and it is more suitable to use lasers to cut ice.

Laser cutting machines are not fun. If you accidentally touch the spacesuit, you can immediately cut a hole, and the spacesuit loses pressure and has no chance to run back.

From this point of view, Ye Han, who controls the cutting machine, is in the most dangerous situation, and the cutting machine in his hand may injure the spacesuit if he is not careful.

As the team leader, how could Ye Han not rush ahead at such a time?

He wanted to cut directly on the flat ice surface, but after thinking about it, he felt that the flat surface was not easy to cut. He looked around, looking for something like an icicle to cut, but only found a few grave-like things.

The grave bag is the grave bag, which is better than the ice surface. Ye Han rushed over with the cutting machine. After removing the floating soil on the surface, an ice lump with a very abstract shape appeared in front of several people.

Xu Hua lay on the ice lump and looked at it: "Can this work? There are too many impurities."

The glacial lakes on the earth are all frozen by water, and there are few impurities in the ice layer; the glacial lakes on the moon are formed by the impact of icy asteroids.

There are very few flat places, and there are many messy impurities in the ice.

Because there are too many impurities, taking ice is not just about finding a place to cut a few pieces to complete the task. It is necessary to find an ice layer with high ice content and few impurities in order to get twice the result with half the effort.

The impurity content of the ice lump is not less than 50%. If the ice lake is likened to a ore vein, this ice lump is the kind of ore that is extremely barren and has no mining value.

Ye Han could only find another ice lump. This time, the quality was much better, but it was actually an empty shell. There was only a layer of ice less than **** thick, like a tent, inside the shell. Empty with nothing.

Ye Han was angry and returned to the original freezing point: "I think I understand, Lao Gao brought us here, he must have seen the situation of the ice lake long ago."

The freezing point specified by Gao Kai, the impurities in the ice layer should not exceed 10% at most, which is an absolute high-quality mineral source.

Duan Zhiyang replied: "Eighty percent of the time, in my opinion, this crater is a big ice lake, but there are too few places suitable for mining."

"It makes sense!" Ye Han agreed.

When the spacecraft landed, the retro rocket blew away the lunar soil under the spacecraft. He still clearly remembers that the black ground under the lunar soil is very hard. Now that he thinks about it, it is likely to be an ice layer doped with too many impurities... ...It's too convoluted to say that, to put it bluntly, it is a layer of frozen mud.

Xu Hua smiled and said, "I don't know what the asteroid looked like when it hit here."

"What else can it look like." Ye Han said, "it hits first, then explodes, and then the melted water flows into the pit. After the temperature drops, the water boils violently to take away the heat, and finally the remaining water freezes at the bottom of the pit. , the mistake has been left to this day.”

"It's boiling!" Xu Hua looked back and saw the undulating continuous peaks and ridges of the crater in the distance without hindrance. "What is the diameter of this pit?"

"More than thirty, less than forty."

Xu Hua smiled and said, "Do you think this crater is surrounded by mountains, does it look like a cauldron?"

"It's quite like... What do you want to say?" Ye Han felt that there was something in his words.

Xu Hua laughed again: "You said, if it hits, just stand outside the crater and watch, a large pot of dozens of kilometers is full of boiling water, how spectacular!"

"I'm sorry, you can figure it out!" Ye Han wrote a big word in his heart, "How does your brain grow?"

Xu Hua smiled embarrassedly: "Just think about it.

Duan Zhiyang stretched out his thumb: "You cow!" The gloves of the spacesuit only have two fingers, and he can't make more complicated gestures except for thumbs up~www.readwn.com~ Well, don't talk shit, start work! "Ye Han put the cutting machine on the ice under his feet and waved at the two companions.

Duan Zhiyang and Xu Hua quickly retreated.

Ye Han didn't dare to be careless. In order to prevent the beam from being reflected by the ice surface, he didn't dare to cut vertically. He placed the cutting machine at an angle, and made sure that the beam would not reach him even if it was reflected, and then turned on the switch of the cutting machine.

A beam invisible to the naked eye shoots out from the top of the cutting machine. The beam comes into contact with the ice surface before it emerges. The ice layer irradiated by the beam quickly heats up and melts, and then vaporizes and disperses. After a while, Ye Han cuts one after another. Thin and deep ice cracks.

Ye Han breathed a sigh of relief and continued to cut in another direction. Before long, several ice slits formed an irregular quadrilateral on the ice surface, and each slit was bottomless.

It's not that the kerf is unfathomable, but that the light is too poor to see how deep the kerf is.

Ye Han manipulated the cutting machine to cut diagonally twice, and finally cut a piece of water ice in the shape of an irregular triangular column from the ice surface. .