农业用的塑料微喷灌管上要加工0.3～1 mm的小孔,传统的机械冲孔方式不能很好地满足质量要求。用激光在微喷灌管材上打孔,有对材料适应性好,加工效率高,孔口无毛刺等优点, 提高了产品质量和产品种类。实验采取连续光纤激光和脉冲光纤激光对聚乙烯(Polyethylene,PE)管进行打孔,得到了激光功率与加工孔径之间的关系和能量通量与加工孔径之间的关系。最后,用连续光纤激光和脉冲光纤激光均能够加工出符合要求的孔。

Holes with diameter from 0.3～1 mm need to be processed in micro-sprinkler irrigation plastic pipeline for agriculture. This requirement cannot be satified by traditional way of using mechanical punching. Laser drilling in such pipeline not merely brings some advantages such as good suitability in material, high efficiency in production and free burr on porthole but also improves product quality and increases variety of product. The CW fiber laser and pulsed fiber laser have been employed on drilling in micro-sprinkler irrigation plastic pipeline with ingredient of PE(Polyethylene) in the experiment. The dependence between laser power and hole diameter and the dependence between fluence and hole diameter have been achieved. Finally, holes for required diameter have been made in the pipeline by using CW fiber laser and pulsed fiber laser.