Moon building metal dome forming method

Abstract

The invention provides a lunar building metal dome forming method. The lunar building metal dome forming method comprises the following steps that a preformed plate is prepared; the annular base is fixedly installed on the lunar surface, and a connecting interface of the annular base and the lunar surface is sealed; the preformed plate is fixed to the annular base through seal welding, so that a superplastic forming cavity is formed between the preformed plate and the annular base, and an air inlet pipe communicating with the superplastic forming cavity is welded and fixed; and the superplastic forming blank is heated through the temperature of the moon in the daytime or by adopting other auxiliary structures, so that the temperature of the superplastic forming blank reaches the superplastic forming temperature. Inert gas is introduced into the superplastic forming cavity through the gas inlet pipe, so that the superplastic forming green body is superplastic-formed into the hemispherical metal dome; doors, windows and mounting holes are formed in the hemispherical metal dome in a cutting manner; and a heat insulation material layer is laid on the outer surface of the hemispherical metal dome. According to the method, low-cost forming of the metal dome of the moon building can be achieved.

Description

Technical Field

[0001] This invention relates to the field of plastic forming technology, and more specifically, to a method for forming a metal dome for lunar architecture. Background Technology

[0002] As lunar exploration continues to deepen, and a human base for survival or living will be established on the moon in the future, how to achieve material preparation and structure manufacturing on the moon has become the primary problem facing humanity and a technological bottleneck that needs to be overcome.

[0003] In the field of materials extraction research, Lunar Resources in the United States has developed a regolith melting electrolysis technology. This technology, which aims to extract metals such as iron, aluminum, magnesium, and silicon from lunar regolith, originated from NASA's regolith melting electrolysis technology. This technology heats lunar regolith material to 1600°C to melt it before electrolysis, producing oxygen and various metals. While this technology has achieved some success in the laboratory, its feasibility in the harsh environment of the lunar surface, such as vacuum and large temperature fluctuations, still needs to be verified. Other extraction methods: The European Space Agency commissioned Alenia Space to conduct research using electrolysis technology developed by Metalysis to reduce lunar metal oxides and ores into pure metals and alloys. This process allows for precise control of oxide powder characteristics, and pre-alloyed or ore raw materials can be used directly without producing toxic byproducts.

[0004] In structural manufacturing, the main research technology currently being studied is additive manufacturing. The European Space Agency supports the Austrian company incus in related research, which uses a metal additive manufacturing (LMM) technology based on photopolymerization principles. This technology combines metal powder and binder, cures them with ultraviolet light, and then sintersects them to obtain three-dimensional metal structures. This technology does not require complex post-processing and has advantages in high-precision machining. For example, it can already print high-strength titanium parts with strength comparable to conventionally injection-molded titanium parts (1000-1050 MPa). In addition, some research teams have tried using raw materials containing different proportions of lunar dust for 3D printing. Although high concentrations of lunar dust powder affect the viscosity of the printed parts, adjusting the binder-to-powder ratio can make the parts meet the required porosity standards. However, further exploration is needed for printing other types of materials (such as iron and steel) and for handling higher concentrations of lunar dust.

[0005] Neither material extraction technology nor additive manufacturing technology has certain shortcomings in realizing the manufacturing of large parts and the construction of buildings on the moon. Summary of the Invention

[0006] (a) Technical problems to be solved The technical problem that this invention aims to solve is that existing technologies are insufficient for manufacturing large parts and constructing buildings on the moon.

[0007] (II) Technical Solution To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a method for forming a metal dome for lunar architecture, comprising the following steps: S1. Prepare two preformed plates, which are circular metal plates. Seal the periphery of the two preformed plates to form a superplastic forming chamber between the two preformed plates. Weld and fix the air inlet pipe that connects to the superplastic forming chamber to obtain a superplastic forming blank. S2. Install and fix the annular base onto the lunar surface; S3. Weld and fix the superplastic preform to the annular base; S4. If the material of the preformed plate is a first material and the superplastic forming temperature of the first material is lower than the highest temperature of the lunar daytime, then proceed to step S5; if the material of the preformed plate is a second material and the superplastic forming temperature of the second material is higher than the highest temperature of the lunar daytime, then heat the preformed plate to make the temperature of the preformed plate reach the superplastic forming temperature, and then proceed to step S5.

[0008] S5. Inert gas is introduced into the superplastic forming chamber through the air inlet pipe so that the two preformed plates are superplastically formed into a hemispherical metal dome and a floor, respectively. S6. Cut and install doors, windows and mounting holes on the hemispherical metal dome.

[0009] Secondly, the present invention also provides a method for forming a metal dome for lunar architecture, comprising the following steps: S1. Prepare a preformed sheet, wherein the preformed sheet is a circular metal sheet; S2. Install and fix the annular base on the lunar surface, and seal the connection interface between the annular base and the lunar surface; S3. The preformed plate is sealed and fixed to the annular base so that a superplastic forming chamber is formed between the preformed plate and the annular base, and the air inlet pipe connecting the superplastic forming chamber is welded and fixed. S4. If the material of the preformed plate is a first material and the superplastic forming temperature of the first material is lower than the highest temperature of the lunar daytime, then proceed to step S5; if the material of the preformed plate is a second material and the superplastic forming temperature of the second material is higher than the highest temperature of the lunar daytime, then heat the preformed plate to make the temperature of the preformed plate reach the superplastic forming temperature, and then proceed to step S5.

[0010] S5. Inert gas is introduced into the superplastic forming chamber through the air inlet pipe so that the preformed sheet is superplastically formed into a hemispherical metal dome. S6. Cut and install doors, windows and mounting holes on the hemispherical metal dome.

[0011] Preferably, the method further includes the following steps: S7. A layer of heat-insulating material is laid on the outer surface of the hemispherical metal dome.

[0012] Preferably, the insulation material layer is an aerogel insulation material.

[0013] Preferably, the preformed sheet is prepared as follows: Cut the alloy sheet into hexagonal sheets; Multiple hexagonal plates are welded together to form a circular metal plate, thus obtaining a preformed plate.

[0014] Preferably, the side length of the hexagonal plate is 0.5m to 1m, the thickness is 1mm to 5mm, and the diameter of the preformed plate is 5m to 10m.

[0015] Preferably, step S2 specifically includes the following steps: The annular base was installed and fixed to the lunar surface using anchor bolts; Lunar soil slurry is applied to the connection interface between the annular base and the lunar surface, and to the connection interface between the annular base and the anchor bolts. After the lunar soil slurry solidifies, a seal is achieved between the annular base and the lunar surface.

[0016] Preferably, the method of heating the preformed sheet includes: Sunlight is focused onto the preformed sheet material through a concave mirror so that the temperature of the preformed sheet material reaches the superplastic forming temperature. Alternatively, a metal mesh can be placed on one side of the preformed sheet, with a preset distance between the metal mesh and the preformed sheet. Sunlight is focused onto the metal mesh through a concave mirror to heat the metal mesh, and the metal mesh radiates heat onto the preformed sheet.

[0017] Preferably, the first material includes at least one of Babbitt alloy, silver-tin alloy, and zinc alloy.

[0018] Preferably, the second material includes at least one of aluminum alloy, magnesium alloy, copper alloy, titanium alloy, and steel.

[0019] (III) Beneficial Effects The above-described technical solution of the present invention has at least the following advantages: In this invention, alloy materials with suitable melting points are selected and prepared into preformed plates. These preformed plates are then welded together with an annular base, which is fixed to the lunar surface using anchor bolts. A seal is formed between the lunar surface and the annular base after the slurry solidifies. Taking advantage of the high temperature and long duration of lunar days (each day and night is equivalent to two weeks on Earth), the preformed plates are rapidly heated to the optimal superplastic forming temperature range without the need for heating, or by using focused sunlight. Gas is then filled into the superplastic forming chamber formed between the preformed plates and the lunar surface, integrally forming a hemispherical metal dome. Doors and windows are created on the hemispherical metal dome, and an insulating layer such as aerogel is applied to the outer surface. This allows for the low-cost and high-efficiency fabrication of a large-size metal dome structure. Furthermore, a superplastic preform can also be prepared by sealing two preformed plates, welding the superplastic preform to an annular base, and then filling the superplastic preform with inert gas, so that the two preformed plates are superplastic molded into a hemispherical metal dome and a floor respectively, thereby achieving rapid forming of a metal dome with a floor. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the hexagonal plate provided in an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the preformed sheet material provided in an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the connection structure between the preformed plate and the annular base provided in an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the superplastic-formed hemispherical metal dome provided in an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the hemispherical metal dome provided in an embodiment of the present invention.

[0026] Figure 6 This is a process flow diagram of the lunar building metal dome forming method provided in the embodiments of the present invention.

[0027] The labels for the attached figures are as follows: 1. Hexagonal sheet material; 2. Pre-formed sheet material; 3. Annular base; 4. Lunar surface; 5. Anchor bolts; 6. Air intake pipe; 7. Hemispherical metal dome; 8. Thermal insulation layer; 71. Doors and windows. Detailed Implementation

[0028] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this invention will be described in more detail below with reference to specific embodiments: Example 1 like Figures 1 to 6 As shown, this embodiment of the invention provides a method for forming a metal dome for lunar architecture, comprising the following steps: S1. Prepare a preformed sheet 2, which is a circular metal sheet. Specifically, the preformed sheet 2 is prepared as follows: cut the alloy sheet into hexagonal sheets 1; weld multiple hexagonal sheets 1 together to form a circular metal sheet, thereby obtaining the preformed sheet 2. The preferred side length of the hexagonal sheets 1 is 0.5m to 1m, the preferred thickness is 1mm to 5mm, and the preferred diameter of the preformed sheet 2 is 5m to 10m.

[0032] S2. Install and fix the annular base 3 to the lunar surface 4, and seal the connection interface between the annular base 3 and the lunar surface 4; specifically, the following steps are included: install and fix the annular base 3 to the lunar surface 4 using anchor bolts 5; apply lunar soil slurry to the connection interface between the annular base 3 and the lunar surface 4, and the connection interface between the annular base 3 and the anchor bolts 5, and after the lunar soil slurry solidifies, a seal is achieved between the annular base 3 and the lunar surface 4.

[0033] S3. The preformed plate 2 is sealed and fixed to the annular base 3 so that a superplastic molding chamber is formed between the preformed plate 2 and the annular base 3, and the air inlet pipe 6 connecting the superplastic molding chamber is welded and fixed. Specifically, the preformed plate 2 and the annular base 3 are welded together by an electron beam welding method, and the air inlet pipe 6 is welded.

[0034] S4. At the highest temperature during the lunar day, if the material of the preformed plate 2 is the first material, and the superplastic forming temperature of the first material is lower than the highest temperature during the lunar day, then proceed to step S5; if the material of the preformed plate 2 is the second material, and the superplastic forming temperature of the second material is higher than the highest temperature during the lunar day, then heat the preformed plate 2 to bring its temperature to the superplastic forming temperature, and then proceed to step S5. Specifically, the heating methods for the preformed plate 2 include: focusing sunlight onto the preformed plate 2 through a concave mirror to bring its temperature to the superplastic forming temperature; or, setting a metal mesh on one side of the preformed plate 2, with a preset distance between the metal mesh and the preformed plate 2, focusing sunlight onto the metal mesh through a concave mirror to heat the metal mesh, and the metal mesh radiating heats the preformed plate 2. The first material includes at least one of Babbitt alloy, silver-tin alloy, and zinc alloy. The second material includes at least one of aluminum alloy, magnesium alloy, copper alloy, titanium alloy, and steel.

[0035] S5. Inert gas is introduced into the superplastic forming chamber through the air inlet pipe 6 to superplastically form the preformed sheet 2 into a hemispherical metal dome 7. Specifically, superplasticity refers to the phenomenon that a material exhibits abnormally low rheological resistance and abnormally high rheological properties under certain internal and external conditions. Superplasticity is characterized by high elongation, no necking, low stress, and ease of forming. Superplastic forming refers to utilizing the ultra-high elongation and resistance to fracture exhibited by superplastic metallic materials under specific temperature and strain rate conditions. Superplastic forming can achieve low-cost and high-efficiency manufacturing of large-size metal structural components. Utilizing its characteristics and advantages, combined with the characteristics of the moon's long daytime (equivalent to two weeks on Earth), high temperature (127℃), and low nighttime temperature (-183℃), it can be used to form large-size metal structures on the moon, possessing unique advantages compared to other technologies.

[0036] S6. Cut and install doors, windows 71 and mounting holes on the hemispherical metal dome 7; S7. A heat insulation material layer 8 is laid on the outer surface of the hemispherical metal dome 7. Specifically, the heat insulation material layer 8 is preferably an aerogel heat insulation material.

[0037] Example 2 This invention provides a method for forming a metal dome for lunar architecture, comprising the following steps: S1. Prepare two preformed plates 2, which are circular metal plates. Seal and weld the periphery of the two preformed plates 2 to form a superplastic forming chamber between them. Weld and fix the air inlet pipe connecting the superplastic forming chamber to obtain a superplastic forming blank. Specifically, the preparation method of the preformed plate 2 is as follows: cut the alloy plate into hexagonal plates 1; weld multiple hexagonal plates 1 together to form a circular metal plate to obtain the preformed plate 2. The preferred side length of the hexagonal plates 1 is 0.5m to 1m, the preferred thickness is 1mm to 5mm, and the preferred diameter of the preformed plate 2 is 5m to 10m. Preferably, in a lunar temperature environment of 127℃, the two preformed plates 2 are sealed and welded together using electron beam welding or similar methods.

[0038] S2. Install and fix the annular base 3 onto the lunar surface 4; S3. Weld and fix the superplastic preform to the annular base 3; S4. At the highest temperature during the lunar day, if the material of preformed plate 2 is the first material, and the superplastic forming temperature of the first material is lower than the highest temperature during the lunar day, then proceed to step S5. If the superplastic forming temperature of the material of preformed plate 2 is lower than the highest temperature during the lunar day, the high temperature and long duration of the lunar day (day and night are each equivalent to two weeks on Earth) can be utilized to directly heat the preformed plate 2 using the lunar daytime temperature, without the need for other structures or equipment. If the material of preformed plate 2 is the second material, and the superplastic forming temperature of the second material is higher than the highest temperature during the lunar day, then the preformed plate 2 is heated until its temperature reaches the superplastic forming temperature, and then step S5 is executed.

[0039] Specifically, the heating method for the preformed sheet includes: focusing sunlight onto the preformed sheet through a concave mirror to bring its temperature to the superplastic forming temperature; if the material of the preformed sheet 2 is a high-melting-point alloy, i.e., its superplastic forming temperature is higher than 127°C, such as aluminum alloy, magnesium alloy, copper alloy, etc., the concave mirror focusing method can be used to focus the focal point on the entire preformed sheet 2, uniformly heating the preformed sheet 2. In another embodiment, a metal mesh is set on one side of the preformed sheet, with a preset distance between the metal mesh and the preformed sheet; sunlight is focused onto the metal mesh through a concave mirror to heat the metal mesh, and the metal mesh radiates heat to the preformed sheet. If the material of the preformed sheet 2 is a high-melting-point alloy, i.e., its superplastic forming temperature is higher than 127°C, such as titanium alloy, steel, refractory alloy, etc., two metal meshes are set at a certain distance from the preformed sheet 2, and the concave mirror focusing method is used to focus the focal point on the metal mesh, so that the metal mesh is uniformly heated; the metal mesh uniformly heats the preformed sheet 2 through radiative heating.

[0040] The first material includes at least one of Babbitt alloy, silver-tin alloy, and zinc alloy. The second material includes at least one of aluminum alloy, magnesium alloy, copper alloy, titanium alloy, and steel. More specifically, the first material can be: Sn, Zn, Al-Zn-Mg, Al-Li, Mg-Li, Mg-Zn-Ca, Mg-RE-Zn series magnesium alloys, or bismuth-Bi alloys. Tin alloys include: Babbitt alloy and silver-tin alloy. Zinc alloys include: Zamak series alloys, zinc-aluminum alloys, zinc-magnesium alloys, and zinc-copper alloys. Bismuth alloys include: bismuth-aluminum alloys, bismuth-cadmium alloys, and bismuth-silver-cesium alloys.

[0041] S5. Inert gas is introduced into the superplastic forming chamber through the air inlet pipe so that the two preformed plates are superplastically formed into a hemispherical metal dome 7 and a floor, respectively. S6. Cut and install doors and windows 71 and mounting holes on the hemispherical metal dome 7; specifically, the mounting holes are used to install equipment and instruments, such as for the passage of pipelines and wires for supplying equipment.

[0042] S7. A heat insulation material layer 8 is laid on the outer surface of the hemispherical metal dome 7. Specifically, the heat insulation material layer 8 is preferably an aerogel heat insulation material. The heat insulation material layer 8 can ensure that the temperature of the hemispherical metal dome 7 is lower than the ambient temperature, and will not cause the hemispherical metal dome 7 to collapse due to excessive temperature.

[0043] The following are specific embodiments provided in this application: Example 3: This embodiment provides a method for forming a metal dome for lunar architecture, including the following steps: S1. Cut the alloy sheet into hexagonal sheets 1. The side length of each hexagonal sheet 1 is about 0.5m to 1m and the thickness is 1mm to 5mm. The cut hexagonal sheets 1 are welded together using electron beam welding and other methods. The preformed sheet 2 after welding is a circular sheet with a size of about Ф5m to 10mm.

[0044] In a lunar environment with a temperature of 127°C, two pre-formed plates were welded together using electron beam welding and other methods.

[0045] S2. Install a ring-shaped base 3 on the lunar surface and fix it to the lunar surface 4 with anchor bolts 5. In order to ensure a seal between the ring-shaped base 3 and the lunar surface 4, apply a lunar material slurry to the outer and inner edges of the ring-shaped base 3 and the lunar surface 4, as well as the contact points between the anchor bolts 5 and the ring-shaped base 3. After solidification, a seal is achieved between the ring-shaped base 3 and the lunar surface 4.

[0046] S3. Using electron beam welding or other welding methods, the preformed plate 2 is welded together with the annular base 3, and the air inlet pipe 6 is welded.

[0047] S4. The material of the preformed sheet 2 is a low melting point alloy, such as Babbitt alloy, silver-tin alloy, Zamak series alloys (Zamak 2, Zamak 3, Zamak 5), ZA series alloys (ZA-8, ZA-12, ZA-27), zinc-aluminum alloy, zinc-magnesium alloy, zinc-copper alloy, bismuth-aluminum alloy, bismuth-cadmium alloy, and bismuth-silver-cesium alloy. In the lunar temperature environment of 127°C, the temperature of the preformed sheet 2 reaches the superplastic forming temperature.

[0048] S5. Argon and other gases are introduced through the air inlet pipe 6 for superplastic forming, and the preformed plate 2 is superplastically formed into a hemispherical metal dome 7.

[0049] S6. Open doors, windows, and other mounting holes for installing equipment and instruments on the superplastic-formed hemispherical metal dome 7.

[0050] S7. After superplastic forming, a layer of aerogel insulation material 8 is laid on the outside of the hemispherical metal dome 7 to complete the manufacturing of the integrated metal dome structure.

[0051] Example 4: Based on Embodiment 3, the difference between this embodiment and Embodiment 3 is as follows: In step S4: the material of the preformed plate 2 is a metal with a high melting point, such as aluminum alloy, magnesium alloy, or copper alloy. A concave mirror is used to focus the focal point on the entire preformed plate 2, and the preformed plate 2 is heated evenly so that the temperature of the preformed plate 2 reaches the superplastic forming temperature.

[0052] Example 5: Based on Embodiment 3, the difference between this embodiment and Embodiment 3 is as follows: In step S4: the material of the preformed plate 2 is a metal with a higher melting point, such as titanium alloy, steel, or refractory alloy. Two metal meshes are set at a certain distance from the two preformed plates 2. A concave mirror is used to focus the focal point on the metal mesh, so that the metal mesh is heated evenly. The metal mesh heats the two preformed plates 2 evenly through radiation heating, so that the temperature of the preformed plate 2 reaches the superplastic forming temperature.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for forming a lunar architectural metal dome, characterized in that, Includes the following steps: S1. Prepare two preformed plates, which are circular metal plates. Seal the periphery of the two preformed plates to form a superplastic forming chamber between the two preformed plates. Weld and fix the air inlet pipe that connects to the superplastic forming chamber to obtain a superplastic forming blank. S2. Install and fix the annular base onto the lunar surface; S3. Weld and fix the superplastic preform to the annular base; S4. If the material of the preformed plate is a first material and the superplastic forming temperature of the first material is lower than the highest temperature of the lunar daytime, then proceed to step S5; if the material of the preformed plate is a second material and the superplastic forming temperature of the second material is higher than the highest temperature of the lunar daytime, then heat the preformed plate to make the temperature of the preformed plate reach the superplastic forming temperature, and then proceed to step S5. S5. Inert gas is introduced into the superplastic forming chamber through the air inlet pipe so that the two preformed plates are superplastically formed into a hemispherical metal dome and a floor, respectively. S6. Cut and install doors, windows and mounting holes on the hemispherical metal dome.

2. A method for forming a lunar architectural metal dome, characterized in that, Includes the following steps: S1. Prepare a preformed sheet, wherein the preformed sheet is a circular metal sheet; S2. Install and fix the annular base on the lunar surface, and seal the connection interface between the annular base and the lunar surface; S3. The preformed plate is sealed and fixed to the annular base so that a superplastic forming chamber is formed between the preformed plate and the annular base, and the air inlet pipe connecting the superplastic forming chamber is welded and fixed. S4. If the material of the preformed plate is a first material and the superplastic forming temperature of the first material is lower than the highest temperature of the lunar daytime, then proceed to step S5; if the material of the preformed plate is a second material and the superplastic forming temperature of the second material is higher than the highest temperature of the lunar daytime, then heat the preformed plate to make the temperature of the preformed plate reach the superplastic forming temperature, and then proceed to step S5. S5. Inert gas is introduced into the superplastic forming chamber through the air inlet pipe so that the preformed sheet is superplastically formed into a hemispherical metal dome. S6. Cut and install doors, windows and mounting holes on the hemispherical metal dome.

3. The method for forming a lunar architectural metal dome as described in claim 1 or 2, characterized in that, It also includes the following steps: S7. A layer of heat-insulating material is laid on the outer surface of the hemispherical metal dome.

4. The method for forming a lunar architectural metal dome as described in claim 3, characterized in that, The insulation material layer is an aerogel insulation material.

5. The method for forming a lunar architectural metal dome as described in claim 1 or 2, characterized in that, The method for preparing the preformed sheet is as follows: Cut the alloy sheet into hexagonal sheets; Multiple hexagonal plates are welded together to form a circular metal plate, thus obtaining a preformed plate.

6. The method for forming a lunar architectural metal dome as described in claim 5, characterized in that, The hexagonal plate has a side length of 0.5m to 1m and a thickness of 1mm to 5mm. The preformed plate has a diameter of 5m to 10m.

7. The method for forming a lunar architectural metal dome as described in claim 2, characterized in that, Step S2 specifically includes the following steps: The annular base was installed and fixed to the lunar surface using anchor bolts; Lunar soil slurry is applied to the connection interface between the annular base and the lunar surface, and to the connection interface between the annular base and the anchor bolts. After the lunar soil slurry solidifies, a seal is achieved between the annular base and the lunar surface.

8. The method for forming a lunar architectural metal dome as described in claim 1 or 2, characterized in that, The methods for heating the preformed sheet include: Sunlight is focused onto the preformed sheet material through a concave mirror so that the temperature of the preformed sheet material reaches the superplastic forming temperature. Alternatively, a metal mesh can be placed on one side of the preformed sheet, with a preset distance between the metal mesh and the preformed sheet. Sunlight is focused onto the metal mesh through a concave mirror to heat the metal mesh, and the metal mesh radiates heat onto the preformed sheet.

9. The method for forming a lunar architectural metal dome as described in claim 1 or 2, characterized in that, The first material includes at least one of Babbitt alloy, silver-tin alloy, and zinc alloy.

10. The method for forming a lunar architectural metal dome as described in claim 1 or 2, characterized in that, The second material includes at least one of aluminum alloy, magnesium alloy, copper alloy, titanium alloy, and steel.

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