Transfer characteristics for laser-induced forward transfer of stainless steel particle
Transfer characteristics for laser-induced forward transfer of stainless steel particle
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DOI：
10.1117/1.oe.61.7.074104
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发表时间：
2022-07
影响因子：
1.3
通讯作者：
A. Tamura;Takahiko Komorizono;Shota Kobashigawa;K. Fushinobu
中科院分区：
文献类型：
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作者：
A. Tamura;Takahiko Komorizono;Shota Kobashigawa;K. Fushinobu
抽象的。加法制造(AM)在几个应用领域具有巨大的发展潜力。尤其是近年来，金属零件的制造作为一个行业得到了迅速发展。在这样的应用中，需要一种低材料损失的送粉器来确保有效的材料利用。因此，采用激光诱导前向转移(LIFT)的制造工艺作为送粉器技术进步的候选技术是很有吸引力的。我们发现，直径为26~53μm的不锈钢颗粒可以通过颗粒提升过程转移；颗粒的转移始于峰值通量∼0.05J cm−2(26和36μm直径)和∼0.15J cm−2(53μm直径)，颗粒完全转移(即转移概率达到1)，峰值通量0.2(26μm)、0.4(39μm)和0.5J cm−2(53μm)。随着峰值注量的增加，粒子离开衬底的初始速度V0成比例增加。当激光束的照射点从颗粒在衬底上的接触点移位时，颗粒以一定的转移角(即，不是垂直的)转移。这些结果证明了通过Lift过程转移金属颗粒的可能性。要将这项技术应用于AM，需要调整激光功率以控制颗粒的传输角度。
Abstract. Additive manufacturing (AM) holds great development potential in several applications. In particular, the fabrication of metal parts has been rapidly developing as an industry recently. In such applications, a powder feeder with low material loss is required to ensure effective material usage. Thus, the manufacturing process using laser-induced forward transfer (LIFT) is attractive as a candidate for advances in powder feeder technology. We show that stainless steel particle with diameters of 26 to 53 μm can be transferred via the particle LIFT process; the transfer of particles started at a peak fluence of ∼0.05 J cm − 2 (26- and 36-μm diameters) and ∼0.15 J cm − 2 (53-μm diameter), and the particles were fully transferred (i.e., the probability of transfer reaches unity) at a peak fluence of 0.2 (26 μm), 0.4 (39 μm), and 0.5 J cm − 2 (53 μm). The initial velocity, v0, at which the particle leaves the substrate increased proportionally with the increase in peak fluence. When the point of irradiation of the laser beam was displaced from the contact point of the particle on the substrate, the particle was transferred with a transfer angle (i.e., not vertically). These results demonstrate the possibility of transferring metal particles via the LIFT process. To use this technology for AM, the laser power should be adjusted to control the transfer angle of the particle.