At present, the main adding methods of alloying elements in aluminum alloy preparation include intermediate alloy adding method and alloying element additive adding method. Alloying is the most important part of alloy production process. The melting of alloying elements in aluminum melt, the uniformity of distribution and the purity of melt affect the final properties of alloy materials. Since the melting point of aluminum is about 660 ° C, high melting point metals such as manganese, titanium, silicon, iron and chromium need to be added to the preparation of aluminum alloys (all in 1 200 If it is added to aluminum melt in the form of elemental (pure metal), the melting temperature needs to exceed the melting point of alloying elements, which will cause the vaporization of aluminum melt, and aluminum melt is easy to react with surrounding oxygen, water, etc., forming impurities that are difficult to remove, resulting in the deterioration of the performance of aluminum alloy and even lead to the scrap of aluminum alloy . In addition, heating the furnace significantly requires more energy and a long heating time, resulting in high cost, low efficiency, and low quality of the preparation process.
In the mid-1990s, aluminum alloy element additives began to be tested in China's aluminum alloy industry, and began to be tested successively around 2000, solving the problem of low temperature melting of high melting point metals. Alloy element additive production without high temperature melting, alloy element content (mass fraction) can be no less than 75%, containing low impurities, high yield, in improving aluminum alloy manufacturing efficiency, reduce material burn loss, improve the performance of alloy materials has obvious advantages.
Aluminum alloy element additives are mainly used in the production of deformed aluminum alloys. According to Statista data calculation , the total output of rolled aluminum and extruded aluminum in the world in 2021 is about 57.42 Mt. According to the proportion of added elements in deformed aluminum alloy in the national standard "Deformed aluminum and aluminum alloy Chemical composition", the global demand for aluminum alloy element additives in 2021 is about 600 ~ 700 kt. According to Statista's forecast growth rate of 5.5% in the global primary aluminum market from 2022 to 2027, it is expected that the demand for aluminum alloy element additives will reach 926.3kt in 2027.
Aluminum alloy element additives are mainly used in the production of deformed aluminum alloys. According to Statista data calculation , the total output of rolled aluminum and extruded aluminum in the world in 2021 is about 57.42 Mt. According to the proportion of added elements in deformed aluminum alloy in the national standard "Deformed aluminum and aluminum alloy Chemical composition", the global demand for aluminum alloy element additives in 2021 is about 600 ~ 700 kt. According to Statista's forecast growth rate of 5.5% in the global primary aluminum market from 2022 to 2027, it is expected that the demand for aluminum alloy element additives will reach 926.3kt in 2027.