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Research progress of non-heat treatment die-casting aluminum alloy for automotive structural parts

Research progress of non-heat treatment die-casting aluminum alloy for automotive structural parts

Research progress of non-heat treatment die-casting aluminum alloy for automotive structural parts



For automotive vacuum die casting structure parts, AlSi10MnMg alloy heat treatment process will lead to die casting parts deformation and surface blistering problems. Therefore, non-heat treatment die casting aluminum alloy material on the one hand can be used directly in the casting state to avoid the above problems, on the other hand, can also reduce the parts manufacturing cost, in recent years, its development and application has gradually become a hot spot of research. At present, the study of non-heat treatment die-casting aluminum alloy for automotive structural parts mainly focuses on Al-Si system and Al-Mg system two categories.



For the vehicle enterprise, automobile structural parts with aluminum alloy die casting is different from the traditional die casting, manufacturing process connection process and service process of the whole vehicle performance on the die casting casting under the state of comprehensive mechanical properties, especially the toughness requirements are higher, the current Al-Si system and Al-Mg system alloy is generally have medium strength and toughness characteristics. With the integration of aluminum alloy die casting structural parts and lightweight design needs continue to improve, the development of new die casting alloys should be towards the enhancement of strength and/or toughness, at the same time has good mobility and casting performance of the direction of development.



For aluminum processing enterprises, automobile structural parts with die casting aluminum alloy due to its low Fe content, even if add higher Mn element, die casting alloy for die erosion phenomenon is still more serious, die life compared to traditional die casting parts significantly reduced, which leads to automobile die casting structure parts manufacturing cost is obviously high, especially with the die casting parts continue to large-scale, the challenge for the die is more and more big. At the same time low Fe die-casting alloy must use pure aluminum ingot preparation, the cost of raw materials and carbon emissions compared to the traditional die casting is also obviously high, therefore, the research and development of Fe element tolerance is higher new high strength die-casting alloy, promote the application of regeneration of aluminum alloy in the automotive die casting structure, not only for parts and components cost control is advantageous, but also can greatly reduce the raw material to obtain the phase of the carbon emissions, so as to significantly improve the Product competitiveness.


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