Chinese Academy of Sciences

Beijing Institute of Spacecraft Environment Engineering

Ningbo Iii Lasers Technology Co., Ltd

Tianrun Zhang

Yang Yang

Tao Song

Wenwu Zhang

Chunhai Guo

Yufeng Wang

Shuhong Xiang

Jingyu Tong

A turbine blade having a gas film cooling structure with a composite irregular groove. The turbine blade has a hollow structure, and a plurality of first grooves which are recessed grooves are provided on an outer surface thereof. A plurality of discrete holes A extending to an inner surface of the turbine blade are provided at the groove bottom of each first groove. The first groove is an irregular groove, and includes at least two portions in a depth direction. A portion having a depth Hfrom the groove bottom of the first groove is a first portion, and the rest thereof is a second portion. At least one side surface of the second portion is formed by expanding in lateral direction from a corresponding side surface of the first portion.

Turbine blade having gas film cooling structure with a composite irregular groove and a method of manufacturing the same

A laser processing head () comprises a first-level nozzle () and a second-level nozzle () that communicate with each other, wherein the second-level nozzle () is arranged downstream of the first-level nozzle (); an inner diameter of the second-level nozzle () gradually decreases in a laser transmission direction, and minimum inner diameter of the first-level nozzle () is larger than the inner diameter of a tail end of the second-level nozzle (). The laser processing head () solves the contradiction between high energy density laser and the system reliability through gradual coupling. Also provided are a laser processing system and a laser processing method.

Laser processing head with two nozzles and systems and methods therefor

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Ningbo, China

Tianrun Zhang