DEVICE AND METHOD FOR LASER SHOCK STRENGTHENING OF AERO-ENGINE BLADE

WIPO Patent Application WO/2023/045581

A1

Disclosed are a device and method for the laser shock strengthening of an aero-engine blade, which is characterized in that: the device comprises a high-energy pulse laser, a constraining layer, an absorption layer, a contact film and a region of an aero-engine blade to be treated; the device mainly places a high-strength and high-elasticity metal in conventional laser shock strengthening to obtain the contact film, and staggeringly and parallelly arranged micro-kidney-shaped holes are provided on the contact film; and the long sides of the kidney-shaped holes are parallel to an air intake edge of the engine blade. Since the materials inside of said micro-kidney-shaped holes are not affected by laser shock waves, micro-protrusions having a height of 2-3 μm will be formed during the strengthening process; meanwhile, staggeringly arranged compressive stress-tensile stress regions are formed, which may effectively suppress fatigue cracks and greatly improve the fatigue service life of the aero-engine blade. The present invention may be applied to the strengthening treatment of aero-engine blades.

CHEN XIZHANG (CN)
DAI FENGZE (CN)
WANG YANHU (CN)
ZHANG JIAN (CN)
PENG KANG (CN)
XIN DONGQUN (CN)
ZHANG YOUZHI (CN)
QIAN LIYAN (CN)
WANG MENGYUE (CN)

PCT/CN2022/110151

March 30, 2023

August 04, 2022

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UNIV WENZHOU (CN)

C21D10/00; C21D11/00

CN113832335A	2021-12-24
CN110607432A	2019-12-24
CN110732780A	2020-01-31
CN107671601A	2018-02-09
CN104046769A	2014-09-17
CN104164538A	2014-11-26

NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)

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