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Method and device of shot peening for surface of metal component by means of light-water complex

A metal component, shot peening technology, applied in the field of laser processing and material surface modification, can solve the problem of insufficient restraint strength, achieve overall grain refinement, improve the mechanical properties and mechanical properties of materials, and uniform residual compressive stress distribution Effect

Active Publication Date: 2013-02-13
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention cleverly couples light and water together to form a light-water complex, and carries out shot peening strengthening of metal components, which overcomes the shortcomings of insufficient confinement strength of laser-induced plasma detonation waves in the current flow water curtain confinement mode, making The distribution of residual compressive stress on the surface of metal component materials is more uniform, the amplitude of residual compressive stress is greatly increased, the grain size of the surface material is more uniform, and the fatigue resistance performance is significantly improved

Method used

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  • Method and device of shot peening for surface of metal component by means of light-water complex
  • Method and device of shot peening for surface of metal component by means of light-water complex
  • Method and device of shot peening for surface of metal component by means of light-water complex

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Effect test

Embodiment 1

[0039] Such as figure 1 , 3 shown.

[0040] A device for shot-peening the surface of metal components using a light-water complex, including: a water storage chamber 21 and a hydraulic pump 22; a high-pressure air chamber 14 and an air pump 13; a five-axis linkage numerical control workbench 17; a focusing lens focusing system 25 ; Nd:YAG solid-state laser 3; mirror 2; hydraulic indicator plate 24; computer control system 1.

[0041] A focusing lens focusing system 25, a water storage chamber 21 and a high-pressure air chamber 14 are arranged in the cavity 26. A cylindrical light guide cavity 9 is built in the water storage cavity 21, and a high-voltage resistant Glass 10, 3 mm below the high-pressure resistant glass 10 is the water outlet of the water storage chamber 21, and the high-pressure deionized water is sprayed out through the water outlet to reach the inside of the high-pressure air chamber 14; the laser beam emitted by the Nd:YAG solid-state laser 3 passes through...

example

[0045] Example: Light-water complex shot peening strengthened 6061-T6 aluminum alloy

[0046] Place a 6061-T6 aluminum plate 19 with a size of 20 mm×20 mm×4 mm in the splash-proof chamber 20, coat the surface of the 6061-T6 aluminum plate 19 with an energy absorbing layer 16, turn on the hydraulic pump 22, and adjust the hydraulic pressure regulating valve 23 When the pressure reaches 60 MPa, the water column impacts the surface of the 6061-T6 aluminum plate 19 at this pressure; at the same time, the air pump 13 is turned on, the gas pressure is adjusted to 15 MPa, and the purified air at this pressure is sent to the high-pressure air chamber 18, and the gas is sprayed through the nozzle at the lower end. Turn on the computer control system 1 to issue instructions to the Nd:YAG solid-state laser 3, and the Nd:YAG solid-state laser 3 emits a laser beam that passes through the cylindrical light-guiding cavity 9 through the reflection of the mirror 2 and the focusing of the focu...

Embodiment 2

[0049] Such as figure 1 , 4 shown.

[0050] A device for shot-peening the surface of a metal component using a light-water complex, which includes a computer control system 1, a Nd:YAG solid-state laser 3, a mirror 2, a five-axis linkage numerical control work platform 17, a focusing lens focusing system 25, Water storage chamber 21, high pressure resistant glass 10, hydraulic pump 22, high pressure air chamber 14, air pressure pump 13 and nozzle 15; focusing lens focusing system 25 is installed on the top of water storage chamber 21, and it can adopt figure 1 The focusing device shown can also be used Figure 4 The focusing device shown, figure 1 The focus lens focusing system 25 shown includes a moving sleeve 7, a lock nut 8, a focus lens holding ring 6, a washer 5, and a focus lens 4. The focus lens 4 is placed on the focus lens holding ring 6, and the washer 5 will It is fixed, the focus lens clamping ring 6 is in interference fit with the moving sleeve 7, and the movi...

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Abstract

The invention relates to the technical field of laser processing, and discloses a method and a device of shot peening for the surface of a metal component by means of a light-water complex. According to the method and the device of the shot peening for the surface of the metal component by means of the light-water complex, laser beams of high energy density and deionized water with certain pressure are utilized for coupling, and the light-water complex obtained after the coupling is utilized for the shot peening for the surface of the metal component. Through the shot peening with the light-water complex, the problem that shot peening effect is not ideal due to the fact that a water constraining layer is uneven in thickness and high in flexibility is solved, the deionized water with the certain pressure has certain momentum, the constraining effect of the deionized water can be similar to rigid constraint, and therefore the constraining effect is better. At the same time, after the shot peening, the shock pressure of the deionized water and the laser induced shock pressure are superposed, and therefore residual compressive stress amplitude generated on the surface of the material is enabled to be significantly improved, the residual compressive stress field is distributed more evenly, the surface material is high in nanocrystallization, and mechanical properties of the material are effectively improved.

Description

technical field [0001] The invention relates to the field of laser processing and material surface modification, in particular to a light-water complex obtained by coupling a high-energy-density laser beam with high-pressure deionized water to perform shot peening on the surface of metal components to improve the mechanical properties of the metal components and Method and apparatus for fatigue performance. Background technique [0002] The rapid development of science and technology has put forward higher and higher requirements for the precision, performance and life of metal components, and its use environment is increasingly harsh. Many metal components must serve in the external conditions of high pressure, high temperature, high wear and high corrosion, and metal components Various microcracks and defects will inevitably occur on the surface during the manufacturing process of components, which will lead to stress concentration and lead to damage and even failure of me...

Claims

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Application Information

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IPC IPC(8): C21D7/06C21D10/00C22F1/00C22F3/00
Inventor 黄舒左立党周建忠盛杰孟宪凯王宏宇田清钟辉
Owner JIANGSU UNIV
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