The Future Application Direction Of High-End Aluminum Alloy Materials
According to the industrial scale and technical level of aluminum alloy materials in my country. Aiming at the shortcomings of some key aluminum alloy materials in my country, as well as the shortcomings of original technologies such as high-performance aluminum alloy development, aluminum cnc machining technology and intelligent control, the main problems existing in my country's aluminum alloy materials are systematically sorted out. According to the development trend of automobile, ship, aerospace and other fields, the market demand of aluminum alloy materials is analyzed. In view of the current industrial situation of aluminum alloy materials in my country, the following development strategies and suggestions are put forward: strengthen the construction of the R&D system, improve the development environment; optimize the structure, promote quality and efficiency improvement and coordinated development; strengthen supporting policy support; promote the construction of talent teams; promote intelligent manufacturing and "Internet +"; strengthen international cooperation, especially the "Belt and Road" international cooperation. It provides an important reference for solving the problem of "stuck neck" of aluminum alloy materials and the development of aluminum alloy materials in the direction of high-end and green.
The high-end aluminum alloy material preparation and cnc machining aluminum series technologies solve many common key engineering production technical problems such as material purification, large-scale standardization, microstructure refinement, homogenization and metastability, texture enhancement and balance control, and improve the material The strength and toughness, hardenability, corrosion resistance, damage tolerance, fatigue resistance, impact resistance and heat resistance and other service properties and comprehensive properties of materials.
Modern aluminum alloy materials are developing in the direction of high comprehensive performance, low density, large size, high uniformity and material/structural integration, providing support for the high-performance manufacturing of aerospace, transportation and high-end equipment. High comprehensive performance aluminum alloy is a hot spot of high-strength aluminum alloy material science and engineering research. As mentioned above, the research and development of new high-strength aluminum alloys and the improvement of existing material properties are related to the innovation of aluminum alloy composition.
Advances in aircraft and rocket technology are directly related to the advancement and production of aluminum alloys. From the Wright brothers' use of aluminum in the engines of the first biplane to the use of sophisticated aluminum alloys in the launch of Shenzhou 13, aluminum has created the potential for humans to fly over the earth and into space.
Aluminum has become an extremely important key material in launch vehicles, because aluminum alloys have low density and excellent unparalleled low temperature performance. The liquid hydrogen and liquid oxygen fuel tanks for launching rockets are made of aluminum alloys. The material used is also aluminum alloy.
High-performance aluminum alloy sheets, medium-thick plates, and profiles are key basic materials for national economic development and national defense construction such as transportation, aerospace, marine ships, etc., and also have a wide range of uses in consumer electronics, new energy, and intelligent equipment.
The application of aluminum alloys in ship engineering. Aluminum alloys for ships are mainly aluminum-magnesium alloys, aluminum-magnesium-silicon alloys and aluminum-zinc-magnesium alloys. According to the location used, they are divided into aluminum alloys for upper outfitting. , Aluminum alloy for hull structure, which includes masts, portholes, chimneys, wheelhouses, etc. The hull structure includes partitions, ribs, keels, bottom outer plates and ship sides. The commonly used aluminum alloy profiles for portholes in the superstructure of ships are 6063 aluminum alloys, and 6063 and 6061 aluminum alloys are often used for masts and gangways. In addition, the use of extruded aluminum-magnesium alloy for the wall plate can prevent deformation during welding and ensure a more reasonable stress distribution. In the hull structure, the application rate of aluminum-magnesium alloys is relatively high, among which 5454 and 5052 aluminum alloys are the main materials for manufacturing decks.
Compared with the traditional carbon steel and stainless steel car body, the aluminum alloy body has obvious advantages in weight. The density of the aluminum alloy material is only 1/3 of that of the steel. , it can save 10,000 to 15,000 kilowatt-hours of electricity every year, thereby improving vehicle operation capabilities; in terms of corrosion resistance and corrosion resistance, aluminum alloy materials themselves are environmentally friendly and anti-corrosion materials, and can be recycled. A dense oxide film is formed, even if the anti-corrosion protection on the surface of the car body is in a state of detachment or damage, it can also ensure the anti-corrosion ability of the car body, and the service life of the car body can reach more than 30 years; The aluminum alloy car body is an integral welded structure, which has better air tightness, and its appearance is more beautiful after the same surface painting treatment. Due to the outstanding advantages of aluminum alloy car body structure, the amount of rail transit car body products at home and abroad is increasing year by year.
Under the situation of energy shortage and serious environmental pollution, the research and development of new energy vehicles has become an inevitable trend in the development of the automobile industry. Pure electric vehicles are currently the most valuable products for large-scale promotion and application. For pure electric vehicles, for every 100kg reduction in curb weight, the cruising range can be increased by 10%, and the battery cost can be saved by 15% to 20%. Lightweight vehicles can help new energy vehicles increase cruising range and reduce costs. According to the survey of the European Aluminum Association, if lightweight technology is used in new energy vehicles, the body weight can be reduced by 10%, the power consumption can be reduced by 5.5%, and the cruising range can be increased by 5.5%. In the case of the same cruising range, although the cost of the all-aluminum body is higher, due to the saving of battery costs, the all-aluminum electric vehicle has a price advantage. For example, the Volkswagen Golf electric vehicle can not only reduce its weight by 187kg by adopting an all-aluminum body, therefore, it is particularly important for electric vehicles to improve energy efficiency through light weight.
The existing research on the thermal conductivity of aluminum alloys is mainly focused on deformed aluminum alloys. Deformed aluminum alloys for thermal conductivity are mainly used in automobiles, electronics and other fields, such as aluminum alloy radiators, heaters, air conditioners, etc. Compared with traditional copper or steel radiators, aluminum radiators have the advantages of light weight, good corrosion resistance and low cost of use, and have been widely used. For example, the ratio of aluminum used in radiators for foreign cars is 95% in Europe, 90% in the United States, and 75% in Japan; in terms of computer radiators, aluminum radiators have become the mainstream, replacing copper/steel heat dissipation and plastic fans. The disadvantage of deformed aluminum alloy is that it is difficult to make parts with complex structures.
In recent years, driven by consumption upgrades, secondary or even multiple consumption of consumer electronics has gradually become mainstream, and the market has entered a stage of steady and rapid development. In this environment, consumer electronics companies pay more and more attention to product design and material technology to enhance user experience and brand image. With the rapid development of the domestic consumer electronics market, the consumption of aluminum in the consumer electronics industry has grown rapidly, especially the growing demand for high-quality deep-processed aluminum products and aluminum milling service.