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The impurity elements of 3000 series alloy generally include Fe, Si, Mg, Zn. Fe can be dissolved in MnAl6 to form (FeMn)Al6 compound, thereby reducing the solubility of Mn in Al. 0.4%～0.7% Fe is added to the alloy, but Fe+Mn must not exceed 1.85%, which can effectively refine the grains of the sheet after annealing. […]

The impurity elements of 5000 series aluminum alloy mainly include Fe, Si, Cu, Zn and so on. Fe, Mn and Cr can form insoluble compounds, thereby weakening the role of Mn and Cr in the alloy. When more hard and brittle compounds are formed in the ingot structure, processing cracks are likely to occur. In […]

The main impurities in 7000 series Al-Zn-Mg and Al-Zn-Mg-Cu alloys are Fe and Si. Fe will reduce the corrosion resistance and mechanical properties of the alloy, especially for alloys with higher Mn content. Therefore, the Fe content should be as low as possible and its content should be limited to less than 0.3%. Si can […]

The impurity elements in 2000 series Al-Cu-Mg and Al-Cu-Mn alloys are mainly Fe, Si, Zn and so on. In Al-Cu-Mg alloys with magnesium content of less than 1.0%, silicon content of more than 0.5% can improve the speed and strength of artificial aging without affecting the natural aging ability. Because silicon and magnesium form the […]

The molten salt used in the flux configuration is a non-metallic salt, which is the object of aluminum melt purification and slagging. In order to avoid secondary slagging of the flux itself, the amount of flux must be minimized, which requires improving the efficiency of aluminum flux purification, and After the flux is completed, all […]

At present, there are many kinds of detection methods for inclusions in molten aluminum at home and abroad, mainly divided into offline detection and online detection. The main methods of offline detection include: metallographic method, filtration method, chemical analysis method, electron beam melting method, centrifugal heating method, ultrasonic method, etc. The online detection methods for […]

Current status of aluminum alloy melt purification technology. At present, the comprehensive treatment of liquid aluminum purification and grain refinement is the basic problem for obtaining high-quality aluminum alloy. According to the different production links, the purification treatment of liquid aluminum can be divided into treatment in the furnace and treatment outside the furnace. The […]

The refining of cast aluminum alloys uses chemical compounds to be added to molten aluminum to degas and remove slag. Refining is an important process step that cannot be missed in the aluminum alloy casting process. It can play the role of degassing, purifying and refining the aluminum alloy. It can also improve the plasticity […]

Hot top casting technology can overcome the disadvantages of conventional DC casting such as poor quality stability, difficult metal flow and control, and serious secondary oxidation, thereby improving the quality and production efficiency of ingots. Therefore, it is widely used in the casting industry in the aluminum casting industry. Pure aluminum and aluminum alloy ingots. […]

The research and development of high-quality aluminum alloy materials requires high-purity aluminum alloy raw materials. Therefore, it is an important topic for material science and technology workers to manufacture equipment that can deeply purify aluminum melt in the smelting process and develop a matching production process. Social development and progress today, aluminum alloy products have […]