Al-Si alloy at home and abroad how to develop the status quo
Date：2016/10/19 10:38:56
Al-Si alloy is a kind of aluminum, silicon-based components forging and casting alloys. Generally 11% silicon. While adding a small amount of copper, iron, nickel to improve strength. The density of 2.6 ~ 2.7g / cm3. Thermal conductivity of 101 ~ 126W / (m ℃). Young's modulus is 71.0 GPa. Impact value of 7 ~ 8.5J. Fatigue limit ± 45MPa.
Al-Si alloy has the following purposes:
1, in the silicon content of more than Al-Si eutectic point (silicon 11.7%) of aluminum-silicon alloy, the silicon particles can significantly improve the wear resistance of the alloy composition of a wide range of wear-resistant alloys.
2, used in the manufacture of low-strength intricate shape of the casting, such as cover, motor shell, brackets, but also for brazing solder.
3, Al-Si alloy is a strong compound deoxidizer, in the steelmaking process instead of pure aluminum can improve the utilization of deoxidizer, and purification of liquid steel to improve the quality of steel. Aluminum deoxidation of steel ingot, generally known as the stabilization of steel, because aluminum deoxidation will be oxidized into alumina, alumina can refine the austenite grain, so the aluminum deoxidized steel has a good overall mechanical properties.
4, silicon aluminum alloy density, low coefficient of thermal expansion, casting performance and anti-wear performance, with its casting alloy casting has a high impact resistance and good high-pressure compactness, can greatly improve the service life, commonly used in its production Aerospace vehicles and auto parts.
In the metallurgical process, alumina and silicon oxide were liquid, generally with carbonaceous reducing agent for reduction; submerged arc furnace can reach the maximum temperature of about 1350 ~ 2200 ℃ or so.
In recent years, with the government to rectify and standardize the market order to strengthen and market competition, the role of the survival of the fittest mechanism to further develop the rapid growth of China's aluminum industry at the same time, the internal structure has undergone significant changes, the industry began to gradually mature. At present, China's aluminum alloy industry has crossed the number of growth characterized by the primary stage of development, initially entered to improve product quality, rich product range, relying on comprehensive strength to participate in market competition in the new stage.
January-December 2013, the country's aluminum production reached 5.9285 million tons, an increase of 21.82%. January-December 2012, the country's aluminum production reached 6.349636 million tons, an increase of 7.1%.
China Industrial Research Network published in 2016 version of China's aluminum industry in-depth research and market analysis of the report that the future of China's aluminum industry market potential is huge. With the progress of industrialization in China, transportation, electronics and other industries for the aluminum alloy profiles demand will show an upward trend in the consumption of aluminum alloy profiles, the proportion of industrial aluminum alloy consumption will continue to rise. China has become the world's largest car producer and the world's most potential consumer market, lightweight automotive industry is an important means of energy-saving emission reduction and lightweight aluminum will inevitably lead to a large number of applications in the car.
Al-Si alloy has the following purposes:
1, in the silicon content of more than Al-Si eutectic point (silicon 11.7%) of aluminum-silicon alloy, the silicon particles can significantly improve the wear resistance of the alloy composition of a wide range of wear-resistant alloys.
2, used in the manufacture of low-strength intricate shape of the casting, such as cover, motor shell, brackets, but also for brazing solder.
3, Al-Si alloy is a strong compound deoxidizer, in the steelmaking process instead of pure aluminum can improve the utilization of deoxidizer, and purification of liquid steel to improve the quality of steel. Aluminum deoxidation of steel ingot, generally known as the stabilization of steel, because aluminum deoxidation will be oxidized into alumina, alumina can refine the austenite grain, so the aluminum deoxidized steel has a good overall mechanical properties.
4, silicon aluminum alloy density, low coefficient of thermal expansion, casting performance and anti-wear performance, with its casting alloy casting has a high impact resistance and good high-pressure compactness, can greatly improve the service life, commonly used in its production Aerospace vehicles and auto parts.
In the metallurgical process, alumina and silicon oxide were liquid, generally with carbonaceous reducing agent for reduction; submerged arc furnace can reach the maximum temperature of about 1350 ~ 2200 ℃ or so.
In recent years, with the government to rectify and standardize the market order to strengthen and market competition, the role of the survival of the fittest mechanism to further develop the rapid growth of China's aluminum industry at the same time, the internal structure has undergone significant changes, the industry began to gradually mature. At present, China's aluminum alloy industry has crossed the number of growth characterized by the primary stage of development, initially entered to improve product quality, rich product range, relying on comprehensive strength to participate in market competition in the new stage.
January-December 2013, the country's aluminum production reached 5.9285 million tons, an increase of 21.82%. January-December 2012, the country's aluminum production reached 6.349636 million tons, an increase of 7.1%.
China Industrial Research Network published in 2016 version of China's aluminum industry in-depth research and market analysis of the report that the future of China's aluminum industry market potential is huge. With the progress of industrialization in China, transportation, electronics and other industries for the aluminum alloy profiles demand will show an upward trend in the consumption of aluminum alloy profiles, the proportion of industrial aluminum alloy consumption will continue to rise. China has become the world's largest car producer and the world's most potential consumer market, lightweight automotive industry is an important means of energy-saving emission reduction and lightweight aluminum will inevitably lead to a large number of applications in the car.