Chapter 405

A steel structure more than 30 meters high and more than 50 meters long can't be made, which is very strange in the state of Yan.

If before the disaster, bigger and more demanding metal components had been made, Yanguo people would never be limited by the rule.

However, in a country where a large number of industrial production capacity has been affected, it is really very difficult to make such steel members. Without sufficient industrial base, it is really impossible to do so.

Of course, there are solutions. As a big country in infrastructure construction, Yanguo has its own alternatives.

Of course, the simplest way is to change the design, and replace the current supporting column scheme with more columns and supporting beams that can be processed or simply poured with reinforced concrete. The construction of the dome can also be completed, but correspondingly, more supporting columns need to be added inside the dome.

Such a scheme is more practical, but more supporting columns in the corresponding dome will have an impact on the internal space. Although the planning is reasonable, it has little impact, but in the end, it is not as good as a transparent overall structure.

The second method is to use the welding process to manufacture the parts of the support column in sections, and then assemble them by welding.

This method can naturally meet the requirements. Yanguo's welding process can already meet the requirements, but on the whole, segmented welding will still have an impact on the support strength, which is not as strong as integrated molding.

Both schemes can play an alternative role, but scheme 1 affects the space utilization, and scheme 2 affects the structural strength. The design team can't make a choice for a moment, so it can only send both schemes to Chen Xin for Party A to make a choice.

The design team is not throwing the pot, and they also want to see if Chen Xin can come up with other solutions.

Chen Xin, is there a solution here?

The answer, of course, is yes.

"There are two solutions to this problem. One is that I can make a machine that can process steel members of this size to process the required things, and the other is that I can use 3D printing technology to print the required things." Chen Xin doesn't think the problem is too difficult to solve. He also gives two solutions.

"What are the characteristics of these two schemes? Is the structural strength enough for 3D printing? " The engineers and technicians who came to submit the scheme to Chen Xin asked Chen Xin that although 3D printing technology has developed rapidly in recent years, no one dares to say that its own technology can be used to print such a large metal structure.

Moreover, even if such a large metal structure can be printed, how can 3D printing ensure that the printed components can meet the requirements in strength?

As for Chen Xin's manufacturing of a machine capable of processing components of this size, engineers and technicians have no doubt that Chen Xin can do it.

"It's not good to build a machine to make components. Apart from the updating of processing accuracy and processing technology, it's basically similar to the normal processing of such components. It's just that my machine may consume less energy and produce better components." Chen Xin gave a simple explanation, and did not give more explanation to his first proposal.

However, for 3D printing, he said with great interest: "as for 3D printing, this technology is basically the same as the existing technology on the market, which is spraying materials through nozzles, and then melting and solidifying the materials through laser sintering, so as to form a stable structure."

At this point, Chen Xin stopped for a moment. After the engineers and technicians had digested what he said, he continued: "however, the laser sintering technology I used is better than the one currently on the market, and the sintered materials are more durable in structural strength.

In addition, the technology I provide does not need a sealed environment to strictly control the air flow and air humidity. It can be applied to the printing and manufacturing of large structures or buildings. Even in the raw materials, it is also possible to use ordinary metal powder to feed in proportion, and then print the alloy. "

"Can I print alloy?" There was a look of surprise on the engineer's face.

If you just print large metal components, this is not enough to shock engineers and technicians, but directly mixed with a single metal powder can be printed out of the alloy, this technology is somewhat incredible.

The alloy manufacturing department is not only mixing metals together, but also different treatments are needed to obtain different properties.

It's like the stainless steel tableware in your home and the shipbuilding steel for warships are made of nickel chromium alloy, but there is a great difference in performance between them.

However, this is nothing for Chen Xin. Even if he wants to build a molecular metallurgical furnace, it is no problem. It is also possible to directly decompose various materials from the molecular level, and then rearrange and combine the molecules according to the needs to obtain the materials he needs.

Of course, this level of metallurgical technology is too exaggerated, and Chen Xin is not ready to make it.

Just now this kind of 3D printer that can print alloy is enough."It's hard for me to explain the specific principle and technology, but you just need to know that I can do it." Chen Xin is still a "I just do things, you study the principle of your own" attitude, but he also said: "I can do a small, you take it to test, see the effect."

"That would be the best!" At this time, the engineering and technical personnel have been excited to say nothing more. They are just looking forward to the 3D printer that Chen Xin promised to print alloy.

If Chen Xinzhen can achieve this, even if he just prints some simple alloys, it will have extraordinary significance in practical application.

Chen Xin naturally saw the excitement of the engineering and technical personnel in front of him. For Chen Xin, this kind of scene that someone was excited because of his own words has been seen too much, and he didn't respond to it all the time, so he just nodded and said: "I'll make a small prototype for you first. You can take it to experiment and confirm the effect Let's talk about the subsequent construction plan. "

"Yes, academician Chen!" Engineering and technical personnel agreed, the excitement in the heart is not easy to suppress down.

As for the change of the construction scheme, of course, it is also a proper meaning. If it is a traditional construction scheme, it needs to build a shelf and be installed and welded by workers bit by bit.

But if you use 3D printing, you can build a high-rise building from the ground. You don't need so many construction workers. You just need to let the 3D printer print out the main structure by itself, and then let the workers handle the follow-up work.

They are quite different in engineering quantity and construction difficulty.

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