Apart from the use of 7075 aluminum alloy in daily life, along with the continuous improvement of technology, it has also begun to be used in important transportation fields, such as aerospace structural materials. At present, it has entered the expansion of automobile industry. The development of aluminum alloy technology has become an inevitable trend.
Casting process is the main preparation method of traditional aluminum alloy, but it is difficult to meet the need of producing high performance aluminum alloy. Along the way, the traditional process has been difficult to further improve strength, plasticity, stiffness, heat resistance and corrosion resistance. Secondly, in the process of pursuing high performance, the cost of casting process increases rapidly due to the decrease of equipment and yield. Thirdly, due to the increase of alloy content, plasticity is often reduced, so subsequent pressure processing costs rise and yield decreases.
In the field of industrial materials. Since then, the proportion of domestic building profiles has been high, while the proportion of foreign industrial profiles has been high. Industrial profiles are often technically difficult and high value-added. From the perspective of application, construction industry is still the main field of aluminum profile application, far more than other fields, and the consumption increases year by year, accounting for more than 63% of the total consumption by 2009. By region, in developed regions such as North America and Europe, the average consumption of aluminum profiles in the industrial sector was over 50% in 2009, while in China, the consumption of aluminum profiles in the industrial sector was only 32%. With the development of economy and the improvement of industrial technology, the consumption of aluminum profiles in the industrial sector has great potential. It is estimated that the consumption proportion of industrial aluminum profiles in 2015 will reach about 45~50%. According to relevant plans of the Chinese government, the proportion of industrial aluminum profiles in total consumption of aluminum profiles will be close to 70% in the next 10 years.
Therefore, the high cost of production greatly improved the threshold for the use of advanced aluminum alloy, seriously affecting the development of the overall market scale. In these areas, the injection forming technology has the dual advantages of performance and comprehensive cost, can reduce the use of advanced aluminum alloy bar, still can further improve performance, in a certain range to achieve to generation of steel, aluminum and cultivate advanced aluminum alloy market rapidly, and, in turn, promote the scale of spray forming technology for the cost advantage. Therefore, the jet forming process will become the main production process of advanced aluminum alloy.
The casting process of aluminum alloy has profound significance and influence on the development of 7075 aluminum alloy. If the market of aluminum alloy is to be steadily improved, the casting process must be constantly updated and improved. The improvement of each step process has irreplaceable significance for the whole process.