6061铝合金灯具散热底座芯轴挤压成形研究

Research on extrusion forming of 6061 aluminum alloy spindle for lamp cooling holder

为了满足6061铝合金LED灯具散热底座芯轴精密制坯要求,根据零件的形状结构特点,制定了复合挤压成形工艺方案;并利用DEFORM-3D有限元分析软件,分别对不同铝坯规格和挤压成形速度下的挤压工艺进行了模拟仿真计算,研究分析了各种方案模拟结果的行程-载荷曲线及金属流线分布。最终确定相对较优的制坯规格尺寸为Φ56 mm×43 mm,挤压速度为30 mm·s^-1。然后进行了设备调试及生产验证。实践表明,挤压成形件与模拟结果基本吻合,产品质量合格、稳定,性能得到提高;与原切削加工方法相比,节省原材料66%。

In order to meet the precision blanking requirement of LED lamp cooling holder spindle for 6061 aluminum alloy,the compound extrusion forming process scheme was designed according to the characteristics of the shape and structure of part. Then,the extrusion processes under different aluminum blank sizes and extrusion speeds were simulated by FEA software DEFORM-3D,and the simulation results of stroke-load curve and metal flow distribution for above different processes were researched. Finally,the relatively optimal size of Φ56 mm × 43 mm and the extrusion speed of 30 mm·s^-1 were selected,and the equipment debugging and production verification were conducted. The results show that the extruded parts are basically consistent with the simulation results,and the quality and performance are stable and improved. Compared with the original cutting process,the raw material is saved by 66%.