Metal blade laser shock processing method without deformation and surface defects
A technology of laser shock strengthening and metal blades, applied in the field of mechanical processing, can solve problems such as large waviness, large deformation, and poor surface roughness, and achieve poor surface roughness, uniform distribution of residual compressive stress, and high surface finish Effect
Inactive Publication Date: 2018-10-02
GUANGDONG UNIV OF TECH
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[0005] The invention provides a metal blade laser shock strengthening method with no deformation and no surface defects, which is used to solve the existing technical problems of poor surface roughness, large waviness and large deformation of the blade after strengthening treatment
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[0023] The embodiment of the present invention provides a metal blade laser shock strengthening method without deformation and surface defects, which is used to solve the technical problems of poor surface roughness, large waviness and large deformation of the existing blade after strengthening treatment.
[0024] In order to make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0025] See...
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Abstract
The invention provides a metal blade laser shock processing method without deformation and surface defects. The method has the advantages that high-strength short-pulse laser is used to perform penetration laser shock processing on a semi-finished-product blade with certain machining allowance to obtain a processed semi-finished-product blade, then milling, grinding or finishing and the like are performed to remove the machining allowance of the semi-finished-product blade so as to obtain the finished-product blade which has certain surface thickness and is uniform in residual compressive stress distribution, low in surface roughness and high in size precision, and the surfaces defects such as poor surface roughness, high waviness and large deformation caused by existing finish-machining blade surface laser shock processing are overcome.
Description
Technical field [0001] The invention relates to the field of mechanical processing, in particular to a laser shock strengthening method for metal blades without deformation and surface defects. Background technique [0002] Aero-engine blades are one of the main components of energy conversion in aero-engines. The performance of aero-engines largely depends on the quality of the blades. The quality of the blades also directly affects the safety and reliability of the engine. [0003] In order to improve the strength of the blade, the blade is usually strengthened, such as mechanical shot peening, laser shock strengthening treatment, etc., to eliminate the residual stress caused by the blade processing, and at the same time improve the blade's ability to resist foreign damage and fatigue damage However, the surface of the blade after mechanical shot peening and laser shock strengthening will have pits of different depths, resulting in surface defects such as poor surface roughness, ...
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Login to View More IPC IPC(8): C21D10/00C21D11/00
CPCC21D10/005C21D11/00
Inventor 张永康杨青天
Owner GUANGDONG UNIV OF TECH