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Chapter 826 Foam Metal

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    How to reduce the material cost of the dome has become the biggest headache for Chen Xin and the entire design team.

    The original structure of the dome is mainly made of high-performance light steel as the main structural support, efte airbags and the support structure are combined to form the main body of the dome, and the outer layer is covered with heat insulation materials.

    There is obviously nothing that can be adjusted or modified about the outer thermal insulation layer and efte airbag. When Chen Xin originally designed the dome, he had already made enough optimizations for these two layers, and the structure and materials were already the same.  Optimal solution.

    So again, unless the materials are changed, there is nothing to adjust.

    And changing materials Not to mention how troublesome it is to develop a new material, even if Chen Xin can develop a new material through the system, there is still a gap between the invention of a material in the laboratory and large-scale industrial production.  Very far away.

    It is necessary to study production technology, develop production equipment, build factories, and formulate technological processes

    It can be said that it can take as short as three to five years and as long as more than ten years to turn a new material from the laboratory into an industrial product that can be mass-produced.

    And this is why Chen Xin did not upgrade the dome¡¯s materials through the system.

    Replacing a new material can indeed meet all requirements, but correspondingly it requires the establishment of a new new material production line.

    Even if Chen Xin uses system upgrades to transform the old production line into a new material production line, this is still not a small project. After all, Chen Xin can only solve the problems of production equipment, such as production technology, process flow, and process parameters.  He has no solution to the problem and still has to rely on other researchers to figure it out.

    Although the problem of production equipment is the most troublesome of all problems in the application of new materials, it is also the most difficult to solve.

    Therefore, although developing a new material can solve all problems and meet the requirements put forward by high-level officials, Chen Xin and the entire design team only use this option as an alternative. In addition to allowing researchers to speed up the research progress in this area,  They still place their hopes more on how to use existing cheap materials to replace high-performance lightweight steel.

    "The steel we use now is a special lightweight material. If we use ordinary steel or lightweight aluminum, the cost is only one-third of the current material. It can be said that this is the best solution at present." In the conference room,  A researcher is explaining: "But if ordinary steel is used, even if the dome is built according to the existing structure, the dead weight will increase at least four times. Light aluminum can compress this ratio to twice, but it will still  It exceeds the safe load-bearing range of the dome¡¯s support structure in the original design.¡±

    Using ordinary steel or lightweight aluminum can indeed effectively reduce costs, but because ordinary steel and lightweight aluminum are still heavier than the original high-performance lightweight steel, the dome's self-weight will increase a lot.

    That¡¯s not to say that the support structure cannot bear the burden, but the excessive weight undoubtedly increases the risk of the dome collapsing.

    After all, this is a large dome that covers a city. All the weight is borne by the supporting structure itself. If the weight is too heavy, it will undoubtedly cause a great burden on the entire structure.

    ¡°What about reinforcing the support structure?¡± someone suggested.

    "It's not feasible. Reinforcing the support structure also means increasing the weight. It's better to add support columns." Someone on the side rejected this proposal.

    "It is feasible to add supporting columns, but in that case, we will have to build tall buildings in the city and put the supporting points on the roof." A designer clicked twice on the table, and the dome design was projected in front of everyone.  and three-dimensional projection, he adjusted the design drawing to show the pillars on it, and then continued: "If you do this, you can ensure that the structure and strength of the dome will not have problems, but these high-rise buildings that serve as support points are not  It¡¯s a problem again.¡±

    The designer did not say what the problem was, but everyone involved in the meeting understood what he meant, because if a tall building wants to be built high, it cannot make itself too heavy.

    ¡°But this is contradictory to load-bearing. After all, these high-rise buildings are used as supporting columns for the entire dome. If they cannot bear load, then there is no meaning.

    "How about pouring a few solid cement columns?" Some people obviously don't give up on this. Since building a high-rise building is not possible, then simply pour a few solid reinforced concrete support columns. If you don't believe it, it won't hold up.

    "In that case, there is no point in reducing costs." The designer calculated the project cost and displayed it, which made everyone present at the meeting shake their heads.

    Pouring reinforced concrete pillars is not just about building a frame with steel bars and then pouring cement into it. If you want to build a reinforced concrete pillar as big as a high-rise building?Pillars will not be cheaper than building a few tall buildings.

    Faced with this result, everyone fell silent for a while.

    Obviously, although the solutions they can come up with now are not without solutions to the problem, all of these solutions have shortcomings.

    It seems impossible to find a perfect solution to the problem that also meets all requirements.

    Just when everyone was thinking about whether to use a backup plan to replace the current high-strength lightweight steel with new materials, someone suddenly said tentatively: "Is it possible to use foam metal?"

    "Metal foam? Isn't it strong enough?" Some people who know what metal foam is have raised questions.

    The so-called foam metal is a kind of material obtained by processing through special technology to make the metal material contain foam pores.

    This material is one of the new materials before the disaster. It has good air permeability and low density, and has certain strength, ductility and additivity, and can be used as a lightweight structural material.

    This material has long been used as the core material for aircraft clamps. In the aerospace and missile industries, foam metal is used as a lightweight, heat-conducting support structure.

    Because it can be welded, glued or electroplated to the structure, it can also be made into a sandwich load-bearing component.

    "It sounds feasible. Is there any information on this?" After hearing this suggestion, Chen Xin felt that it seemed feasible, but he didn't know much about this material.

    The person who made the suggestion quickly retrieved the information related to foam metal and distributed it to everyone.

    Looking at the information about foam metal materials projected in front of him, Chen Xin felt that this material seemed to meet their needs.

    So he thought about it and said: "It seems that foam metal can indeed be considered. Then conduct a feasibility assessment on this material. If it can be used, come up with a plan as soon as possible."

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