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首页> 外文会议>International Congress on Applications of Lasers and Electro-Optics >DIRECT LASER DEPOSITION - A COMPARATIVE STUDY USING DIFFERENT CW YAG LASERS AND WITH IN SITU REAL-TIME SPECTROSCOPY AND IMAGING
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DIRECT LASER DEPOSITION - A COMPARATIVE STUDY USING DIFFERENT CW YAG LASERS AND WITH IN SITU REAL-TIME SPECTROSCOPY AND IMAGING

机译：直接激光沉积 - 使用不同CW YAG激光器的比较研究，并具有原位实时光谱和成像

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摘要

Direct Laser Deposition (DLD) is an emerging technology which shows great potential for direct manufacture. The DLD method has become viable for the build up of three-dimensional parts, their repair or modification, as a means of rapid prototyping and tooling of metallic components. However, compositional monitoring of the DLD process still requires investigation. The in situ application of spectroscopy is a very powerful tool to get more information about the composition created during the DLD. Identification of elements by spectra lines can determine how the melt pool composition has been changed by laser irradiation in real-time. These investigations will allow the development of a non-contact composition monitoring technique for the DLD process. The work reported here centres on initial studies performed with different solid state, CW laser systems (conventional Nd:YAG fiber delivered to 6 axis robot and new high-powered Yb-YAG disc laser fiber delivered to an x-y stage) to investigate the feasibility of applying real-time spectroscopy and fast digital imaging to the DLD process. Several metal compositions have already been studied and two different wavelength spectrometers (UV-VIS and VIS-IR) have been used during the process to record spectra lines in situ.
机译：直接激光沉积（DLD）是一种新兴的技术，它显示了直接生产的巨大潜力。的DLD方法已经成为可行的的三维部件，其修理或改装的积聚，如快速原型和金属部件的工具的方法。然而，DLD过程的组成监控仍需要调查。原位应用光谱学是一个非常强大的工具，以获取有关DLD期间创建的成分更多信息。通过光谱线元件的识别可以决定如何熔池组合物已经通过在实时激光照射改变。这些调查将允许DLD处理的非接触式组合物监测技术的发展。工作报告在这里与不同固态，CW激光系统上执行最初的研究中心（常规的Nd：YAG纤维输送到6轴机器人和递送到XY台的新的高功率的Yb-YAG圆盘激光器纤维）调查的可行性应用实时光谱和快速数字成像的DLD过程。几个金属组合物已经被研究和两个不同的波长光谱仪（UV-VIS和VIS-IR）的过程中在原位记录谱线中已被使用。

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