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Laser impact repairing device and method for damaged metal blade

A laser shock and blade technology, applied in the field of mechanical manufacturing and laser processing applications, can solve problems such as repair of metal blade knots, and achieve the effect of increasing fatigue life, improving fatigue life and good repair effect

Inactive Publication Date: 2007-07-18
JIANGSU UNIV
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of repairing metal blade knots, and to provide a new device and method for repairing damaged blades by laser shock

Method used

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  • Laser impact repairing device and method for damaged metal blade
  • Laser impact repairing device and method for damaged metal blade

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Embodiment Construction

[0023] As shown in Figure 3, laser shock repairs the damaged aircraft blade (13). The material of the aircraft blade (13) is titanium alloy Ti6Al4V, and the blade (13) has cracks with a width of 0.2 mm and a length of 0.9 mm on the air inlet edge. Since the fatigue strength of the blade (13) obviously decreases after damage, the length of the crack becomes exponentially longer with the increase of the number of cycles, and the crack will break soon. In the process of laser shock repair, the laser output wavelength is 1.054 μm, the pulse width (FWHM) of the output laser is 22.1 ns, and the laser pulse energy is about 35 J. At the repairing part of the blade (13), the repairing device positions the blade (13) and the light spot according to the instruction of the repairing device. -(C 2 h 5 O) 4 Si polymer is attached to the part to be repaired. After laser shock repair, the cleaning brush (2) cleans and removes the residual flexible patch on the repaired part of the blade (1...

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Abstract

The present invention relates to a laser impact reparation equipment for metal damaged blade and its reparation method, belonging to the field of machinofacture and laser processing application technology. It is characterized by that in the course of laser impact reparation, after the high polymer patch is provided to reparation position, the upper surface of said high polymer patch and periphery of said patch are coated with black paint, the damaged blade can be moved into the facula action position of the laser reparation equipment by means of location robot, after the damaged blade is repaired, its surface can be cleaned by using cleaning brush until said surface is smooth and clean.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing and laser processing applications, in particular to a device and method for repairing damaged blades by laser shock. Background technique [0002] Laser shock technology is a processing method with good prospects. Its principle is that the shock wave induced by high-energy short-pulse laser interacts with the material, and the shock wave generated by the interaction between the strong laser and the substance is used to improve the mechanical properties of the material, especially the fatigue. life. This technology has been widely used in various industries such as mechanical engineering, aerospace, microelectronics, military, etc. At present, this technology is mainly used in material modification, metal impact strengthening and forming, and non-destructive testing. [0003] The long-life durability and material repair of metal structural parts, especially blade structural parts,...

Claims

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Application Information

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IPC IPC(8): B23P6/00B29C71/04
Inventor 任旭东张永康周建忠李国杰葛涛鲁金忠张新权
Owner JIANGSU UNIV
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