金属熔体喷射沉积特性分析

Characteristics Analysis of Metal Melt Spray Deposition

针对金属熔滴沉积增材制造中金属液流断续随机性变化、断续形貌等参数难以控制和预测的现存问题,采用理论分析与试验研究相结合的方法,对金属液流断续过程中的断续形貌及其影响因素脉冲压力、脉冲频率等进行了研究,揭示了断续形貌长度分布规律。结果表明:通过调节脉冲气压和脉冲频率,可以提高金属液流断裂的形态精度和尺寸精度,可为后续制造过程提供稳定的均匀微滴流。

Since metal flow intermittent changes randomly and intermittent morphology parameters are difficult control and forecast in the metal droplet deposition additive materials manufacture, metal flow discontinuous intermittent morphology and its influencing factors including pulse pressure and pulse frequency were studied. The results show that by adjusting the pulse pressure and pulse frequency, fracture shape accuracy and dimensional accuracy of the metal flow can be improved, which provides stable uniform micro drip for the subsequent manufacturing process.