Droplet Assisted Nanosecond Fibre Laser Micromachining
Droplet Assisted Nanosecond Fibre Laser Micromachining
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DOI：
10.1007/s40516-021-00162-2
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发表时间：
2022-01
影响因子：
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通讯作者：
S. Marimuthu;Zhehao Jiang;A. M. Kamara
中科院分区：
文献类型：
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作者：
S. Marimuthu;Zhehao Jiang;A. M. Kamara
镍合金广泛用于高价值制造业，用于生产各种部件，如燃气涡轮机发动机。这种类型的材料的加工需要一种技术，该技术将确保材料以足够适当的速率去除，以产生所需的成品质量。传统的纳秒脉冲激光微加工（PLM）在材料去除率和最终成品质量方面具有显著的局限性。为此，液滴辅助光纤激光微加工（DAFLM）是一种新的技术，被提出作为一种替代方案，因此在这项研究中进行了研究。DAFLM技术涉及在激光/材料相互作用区域上注入微滴，以产生增强激光加工过程的冲击压力。DAFLM技术的研究结果证实，其熔体喷射机制是通过液滴和激光照射之间的相互作用增强，从而描绘了该技术具有更高的效率，与PLM技术相比，材料去除率提高了97%，再沉积飞溅减少了40%。
Nickel alloys are widely used in the high-value manufacturing industry for the production of a variety of components like gas turbine engines. Machining of this type of materials requires a technique that will ensure material removal at a rate appropriate enough to yield the desired finished quality. The conventional nanosecond pulse laser micromachining (PLM) has significant limitations in terms of material removal rate and eventually finished quality. To that concern, droplet assisted fibre laser micromachining (DAFLM) is a new technique that is proposed as an alternative and therefore investigated in this research. The DAFLM technique involves injecting micro-droplets over the laser/material interaction zone to create a shock pressure that enhances the laser machining process. The results of the investigations on the DAFLM technique confirmed that its melt ejection mechanism is enhanced through the interaction between the droplets and laser irradiation, thus portraying the technique to be of higher efficiency with a 97% improvement in material removal rate and a 40% improvement in redeposited spatter reduction compared to the PLM technique.