论文部分内容阅读
针对高强铝合金可挤压性低、伸长率小、难以实现塑性大变形的问题,以某铝合金药筒零件为研究对象,利用DEFORM-2D软件对该药筒坯件的热挤压成形过程进行了仿真分析。对挤压过程中材料的等效应力、应变等参数,以及成形过程中金属的流动规律进行了分析,讨论了均匀化后冷却方式对铝合金棒材挤压成形过程的影响。结果表明,随炉冷却后的坯料在挤压过程中等效应变分布更加均匀,等效应力峰值比水冷的小约10 MPa,而挤压温度每降低50℃,应力差值增大5 MPa,其所需的挤压载荷更小,最低能减少约15%,并通过试验验证了模拟结果的正确性。
Aiming at the problem of low extrudability, low elongation and difficulty of large plastic deformation of high strength aluminum alloy, taking a aluminum alloy cartridge as the research object, using DEFORM-2D software to hot press the blank The process is simulated. The equivalent stress, strain and other parameters of the material in the extrusion process and the metal flow during the forming process are analyzed. The influence of the cooling method on the extrusion process of the aluminum alloy bar is discussed. The results show that the equivalent strain distribution of the slab after cooling in the furnace is more uniform, the equivalent stress peak is about 10 MPa lower than that of water cooling, and the stress difference is increased by 5 MPa for every 50 ° C reduction. The required compressive load is smaller, the minimum can be reduced by about 15%, and the correctness of the simulation results is verified through experiments.