Aluminum alloys are widely used due to their lightweight nature, high specific strength, excellent corrosion resistance, ease of forming, non-toxic properties, good electrical and thermal conductivity, and compatibility with various surface treatments. These characteristics have led to their extensive application in transportation, new energy sectors, construction, electronics, power engineering, packaging, printing, and home appliances. Many countries have developed a range of high-performance aluminum alloys tailored for civil use. For example, automotive body panels utilize alloys such as 6009, 6111, 6010, 6016, 60l7, 6082, 2038, and CP609. Bumpers often use 7021 and 7029, while machine cutting applications benefit from 2011, 6262, and 6043. Rail car structures rely on 6005A, 7005, and Al-Zn-Mg alloys, while conductors use 1370, 1A60, and 1R50. Additionally, AI-Mg-Si alloys like 6101, 6201, A4/L, and A4G/L are commonly used, and heat exchanger applications involve Al-Si-Mg alloys with brazing materials such as 3003. Other alloys like 4006 are used for stamping and enamelware, while advanced PS plate bases and high-performance body panels are also gaining popularity. One key area of development is the research into high-grade civil building aluminum combined with new materials. In competition with plastics and composites, aluminum products such as doors, windows, and curtain walls must continuously evolve by phasing out low-end options and introducing premium solutions. Recent developments include new alloys based on 6063, such as 6463 and 6463A, as well as medium-strength alloys like 6061, 6351, 6082, 60l3, 5005, 5052, 6005, and 7005. These alloys are increasingly moving toward T6 temper conditions. Additionally, new insulation and broken bridge profiles, along with hybrid materials like aluminum-plastic, aluminum-wood, and aluminum-plastic-wood combinations, are expanding the scope of aluminum usage in construction, including decorative elements, roofs, shelves, columns, and structural components like bridges and formwork. This has significantly reinforced aluminum's role in the building industry. Another focus is on high-performance ultra-thin aluminum alloy materials. Modern decorative and coated plates, mirror panels, skin panels, and advanced PS plate bases require strict control over composition, purity, structure, performance, surface quality, and precision. Countries are developing new alloys such as 801l, 1050A, 1350A, 3103, 3105, 5052A, 5N01, 5657, 5182, 3204, and 3404, along with states like H2n and H3n. New production methods and processes are being explored to meet growing market demands. High-performance electronic aluminum alloys are also seeing significant R&D efforts. Aluminum foils are used in a wide range of applications, and new alloys are being developed to enhance their functionality. Particularly in the field of electronic and capacitor foils, alloys such as industrial pure 1074A, 1060, and 1050A, as well as high-purity aluminum grades like 1A09, 1A93, and 1A85, are becoming more common. Finally, there is ongoing development of large aluminum alloy special profiles for transportation. The variety of these profiles is increasing, and the demand for higher performance and quality is driving the creation of new alloys. Successful examples include 6005, 6005A, 6N01, 7N01, and 7005, which are now widely used in the automotive and rail industries. The start of the shield machine refers to a series of work in which the shield machine is driven from the tunnel door to the undisturbed soil section by using the temporarily assembled pipe segments, Reaction Frame and other equipment of the working shaft. Reinforcement of the starting end, installation of shield machine, starting bracket, assembly of shield machine, installation of reaction frame, shield machine system debugging. Starting Frame,Shield Launching Frame,Shield Starting Base Structure,Starting Base Frame Anshan Lijian Engineering Group Co. LTD , https://www.lijianformwork.com