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在最近几年里，随着大功率、高效率燃气轮机的出现，制造商不得不着眼于用新的合金和新的涂层技术来达到和维持生产的需要，因此，修复工艺也不得不跟上 Ｏ Ｅ Ｍ （原始设备制造厂）的进展，众多的研究和开发工作也正是着眼于发展新的修复工艺。现在应用的许多合金都是定向结晶的或单晶的，直到现在为止，这些合金还被公认为用传统的焊接技术是不能修复的。最近激光应用领域的进展，不仅使这些合金变得可以修复回用，而且还降低了总的修复时间，因而降低了成本。本文着眼于将激光技术应用于燃气轮机部件的修复工艺，简短地提到了激光切割和激光打孔，主要是集中在激光粉末堆焊及其应用上。
In recent years, with the emergence of high-power, high-efficiency gas turbines, manufacturers have had to focus on meeting and sustaining production needs with new alloys and new coating technologies, and as a result, repair processes have had to keep up O E M (original equipment manufacturer) progress, a large number of research and development work is precisely aimed at the development of new repair processes. Many of the alloys now in use are oriented crystalline or single crystal, and these alloys have until now been considered as irreparable by conventional welding techniques. The recent advances in laser applications not only make these alloys repairable and reusable but also reduce the total repair time, thereby reducing costs. This paper focuses on the laser technology used in gas turbine components repair process, briefly referred to the laser cutting and laser drilling, mainly focused on laser powder surfacing and its applications.