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A method and device for controlling laser peening parameters and monitoring blade surface roughness

A surface roughness and laser peening technology, which is applied in the field of controlling laser peening parameters to monitor the surface roughness of blades, can solve the problems of performance loss, aero-engine safety, reliability and fatigue strength reduction, and weaken the mechanical properties of blades. Achieve the effects of improving fatigue life, ensuring consistency, accurate prediction and control

Active Publication Date: 2018-06-12
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the surface quality of the blade has been nearly formed and precisely formed, its surface quality cannot meet its technical requirements. The increase in the surface roughness of the blade will weaken the mechanical properties of the blade, and the greater the roughness, the more serious the loss of performance, resulting in aviation The safety, reliability and fatigue strength of the engine are greatly reduced. Therefore, it is necessary to control the surface roughness of the blade and perform laser peening on the surface of the blade to reduce its surface roughness and improve its surface shape accuracy, so that the fatigue strength of the blade and its service life life

Method used

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  • A method and device for controlling laser peening parameters and monitoring blade surface roughness
  • A method and device for controlling laser peening parameters and monitoring blade surface roughness
  • A method and device for controlling laser peening parameters and monitoring blade surface roughness

Examples

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Effect test

Embodiment 1

[0024] Such as Figure 1-5 As shown, a method for controlling the parameters of laser peening to monitor the surface roughness of a blade includes the following steps:

[0025] Step 1: Use the surface roughness measuring instrument (10) to measure the surface roughness of the variable cross-section thin-walled complex blade (5) before the laser shot peening through the transmission mirror (4) to obtain the measured value before the treatment. The measured value before processing is transmitted to the computer control system (1) through the information acquisition system (11);

[0026] Step 2: Computer control system (1) According to the required surface roughness accuracy requirements of the variable cross-section thin-walled complex blade (5), the flat top variation and roughness of the laser peening beam built in the computer control system (1) In the database of the correspondence relationship between the linear interpolation methods, determine the laser peening parameters that...

Embodiment 2

[0036] Such as Figure 1-5 As shown, a method for controlling the parameters of laser peening to monitor the surface roughness of a blade includes the following steps:

[0037] Step 1: Use the surface roughness measuring instrument (10) to measure the surface roughness of the variable cross-section thin-walled complex blade (5) before the laser shot peening through the transmission mirror (4) to obtain the measured value before the treatment. The measured value before processing is transmitted to the computer control system (1) through the information acquisition system (11);

[0038] Step 2: Computer control system (1) According to the required surface roughness accuracy requirements of the variable cross-section thin-walled complex blade (5), the flat top variation and roughness of the laser peening beam built in the computer control system (1) In the database of the correspondence relationship between the linear interpolation methods, determine the laser peening parameters that...

Embodiment 3

[0048] Such as Figure 1-5 As shown, a method for controlling the parameters of laser peening to monitor the surface roughness of a blade includes the following steps:

[0049] Step 1: Use the surface roughness measuring instrument (10) to measure the surface roughness of the variable cross-section thin-walled complex blade (5) before the laser shot peening through the transmission mirror (4) to obtain the measured value before the treatment. The measured value before processing is transmitted to the computer control system (1) through the information acquisition system (11);

[0050] Step 2: Computer control system (1) According to the required surface roughness accuracy requirements of the variable cross-section thin-walled complex blade (5), the flat top variation and roughness of the laser peening beam built in the computer control system (1) In the database of the correspondence relationship between the linear interpolation methods, determine the laser peening parameters that...

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Abstract

The invention discloses a method and a device for controlling laser peening parameters to monitor surface roughness of a blade. The method comprises the following steps: carrying out laser peening treatment on the surface of a variable-section thin-wall complex blade; monitoring the surface roughness of the blade by controlling flat-topped distribution variation degree of a light beam; and finally, achieving design requirements of the surface roughness of the blade. The invention further discloses the device for controlling laser peening parameters to monitor surface roughness of the blade, and the device comprises a computer control system, a laser unit power supply, laser peening equipment, a transmitting mirror, a blade part robot, a blade part robot control system, a water coating robot control system, a water coating robot, a surface roughness measurer and an information acquisition system. The method and the device disclosed by the invention can treat surface roughness of various thin-wall complex curved surfaces, so that surface precision is improved.

Description

Technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a method and a device for controlling laser shot peening parameters to monitor the surface roughness of a blade. Background technique [0002] The aero engine is a highly complex and precise thermal machinery, known as the "flower of industry". The blade is the main "heart" in the "belly" of an aero engine, and it is also a key moving part related to the safety performance of the aero engine. The aero engine blade is a typical high-precision, variable-section and thin-walled part. High standard. After the surface quality of the blade is near-shaped and precisely formed, its surface quality cannot meet its technical requirements. The increase in the surface roughness of the blade will weaken the mechanical properties of the blade, and the greater the roughness, the more serious the performance loss, which leads to aviation The safety, reliability and fatigue strength of the en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/09C21D7/06
CPCC21D1/09C21D7/06
Inventor 张永康朱然黄志刚王冠
Owner GUANGDONG UNIV OF TECH
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