Analysis of application status and future prospect of casting aluminum alloy

- Aug 13, 2018-

   Cast aluminium alloy refers to the aluminum alloy which can be directly obtained by metal casting forming process. Generally, the content of alloying elements in aluminum alloy castings is higher than that of the corresponding deformation aluminum alloy.
Casting aluminum alloy has good casting performance and can be made into complicated parts.No need for large additional equipment;It is widely used in aviation industry and civil industry because of its advantages of metal saving, cost reduction and time reduction.Used to manufacture beam, turbine blade, pump body, hanger, wheel hub, intake lip and engine casing.It is also used to manufacture the cylinder cover, gearbox and piston of the automobile, the casing of instrument meter and the pump body of supercharger.
As one of the world's largest producers and consumers of non-ferrous metal castings, China's non-ferrous metal casting has become an important emerging industry to support the development of the national economy.At the same time, China, as the world's largest producer of alumina and electrolytic aluminum, has abundant labor resources and huge consumption market, which provides a good foundation for the development of aluminum alloy parts industry in China.Since 2009, the output of aluminum parts in China has accounted for more than 30% of global output, and reached 40% in 2017. China has become the center of international aluminum alloy casting industry.
Die casting in our country manufacturing industry market concentration is low, most enterprise production scale small, scale advantage of enterprise in the industry is relatively small, only a handful of firms with new product research and development, the use of new materials, mold design and manufacturing, precision die casting machine, CNC finishing etc multiple production overall manufacturing capability, as a result, the industry as a whole is difficult to get on the production and research and development of the industrial chain synergies, not conducive to the industry as a whole of competitiveness.
From the international aluminum industry competition situation, China, the United States and Japan have strong competitiveness.In terms of output distribution, about 60% of global aluminum production is concentrated in China, the United States and Japan.Unlike the United States, Japan and other countries, China's output growth has remained relatively high, accounting for more than one-third of the world's total output over the years.
At present, the aluminum processing industry, represented by the United States, Japan, Germany and other developed countries, has basically completed the integration process of selection of winners and losers, merger and reorganization by the end of the 20th century, established multinational corporations, and carried out global production and management.Among them, the most typical company is Alcoa, which covers almost all kinds of aluminum processing materials. It has branches in all major regions of the world, with an annual aluminum processing capacity of nearly 2 million tons.As a representative of Japanese and German aluminum processing enterprises, the company has guided the world aluminum processing to develop in the direction of high precision, and is in the world's leading level in the research and development and production of beverage cans and premium PS plates.
Transportation aluminum is now the second largest area of demand for aluminum.
Aluminum for autocars can be divided into four parts, including passenger cars, commercial vehicles, export auto parts and other parts,
From the perspective of subway, during the 13th five-year plan period, the operating mileage of high-speed railway, subway the growth rate of 10% will still be maintained during the 13th five-year plan period. At present, more than 80% of urban rail vehicles adopt aluminum alloy body.In addition to high-speed railway and subway, the demand for aluminum in C80 coal transport vehicles, ships, containers and other industries will remain stable. To sum up, the transportation industry will still maintain rapid growth in the future.
In the power industry, aluminum is mainly used for wire and cable, transformer coil, induction motor rotor, bus bar, etc.In the electronics industry, aluminum is mainly used for 3C product shell and internal support and electronic appliances.The demand for aluminum in the power electronics industry will continue to grow rapidly as the growth rate of capital construction investment in China's power grid picks up and the penetration rate of metal casing in the consumer electronics industry continues to rise.
Machinery, durable goods, packaging and four other industries together account for 25 per cent of aluminium demand, with the exception of construction, transport and electronic power.Aluminum for machinery and equipment is widely used in textile machinery, medical instruments, instruments and molds. The application of aluminum in the durable consumer goods industry mainly focuses on household appliances such as air conditioners, refrigerators, etc., and other products include cookers, furniture, lighting lamps, and toys.The application of the packaging industry is mainly food and beverage (more than 75% of the aluminum used for packaging), cigarettes, pharmaceutical packaging, etc.
In addition, aluminum products used in other industries include printing, steelmaking, luggage, hardware and other industrial products.Demand in these four sectors is expected to remain at a compound growth rate of around 10%.

Looking at the first half of 2018, the sustainability of the momentum of domestic demand growth remains to be seen, although the current forecast for primary aluminum consumption is generally positive.At the same time, aluminum exports face greater pressure.As financial industry regulation becomes stricter and bank credit scale continues to shrink, the capital liquidity of small and medium-sized aluminum enterprises and traders will face greater pressure in the future.The annual consumption of raw aluminum in the Chinese market is expected to be 50 million tons,
On the whole, in the first half of 2018, high inventory, less than expected demand and lower cost are adding up, and aluminum prices are faced with greater risk of decline.Aluminum prices are expected to gradually recover in the second half of the year as market supply and demand converge toward a tight balance pattern.
At present, China's key enterprises of casting aluminum alloy are faced with the following dilemmas: 1. Serious product homogeneity and insufficient brand recognition.Second, the industrial structure is not reasonable, and the overall overcapacity.
In view of the difficulties, the foundry aluminum alloy enterprises should actively respond to shorten the response cycle of corresponding market changes: improve quality and shorten delivery time, reduce cost and obtain more orders.How to concentrate the limited power of the company into research and development is a big issue;Optimize the management of technological breakthroughs, scientific research and new product development, and solve problems existing in the current management and innovation development process.
High-strength, high-toughness, heat-treatable reinforced aluminum alloy plate is in the initial stage of development in China, not only in the research and development of material properties and mechanism, but also in the application of thermoplastic processing technology.Therefore, at present, almost all the medium and thick plates required by China's aviation and aerospace industry, shipbuilding industry, high-precision mould materials and high-end electronics industry depend on import.
The market outlook is so bright and the demand is so great, and domestic manufacturers of high-strength aluminum alloy sheet are so few, plus the policy support, all of which suggest that now is the best time to invest in this industry.