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Method for prolong service life of intermetallic compound and controlling deformation through laser shock processing

A technology of laser shock strengthening and intermetallic compounds, which is applied in the field of surface strengthening, can solve problems such as the improvement of vibration and finishing fatigue performance, the inapplicability of extrusion strengthening, and the large deformation of thin-walled parts, achieving huge military significance and economic benefits. Solve the problem of deformation control, the effect of considerable economic benefits

Active Publication Date: 2020-03-31
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, surface strengthening includes laser shock strengthening, shot peening, vibration finishing, extrusion, etc. There are many studies on titanium alloy, aluminum alloy, stainless steel and other materials, but there are very few studies on intermetallic compound strengthening.
[0005] Aiming at the large amount of deformation of thin-walled parts caused by shot peening, it is difficult to accurately control the deformation; the fatigue performance of vibration finishing is insufficient; extrusion strengthening is not suitable for thin-walled parts, so an intermetallic compound laser shock is proposed. Enhanced Lifetime Improvement and Deformation Control Method

Method used

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  • Method for prolong service life of intermetallic compound and controlling deformation through laser shock processing
  • Method for prolong service life of intermetallic compound and controlling deformation through laser shock processing
  • Method for prolong service life of intermetallic compound and controlling deformation through laser shock processing

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] The carrier implemented in this embodiment is an intermetallic compound blade; the condition for implementing the present invention is a laser shock peening device with a programming function.

[0033] A method of laser shock strengthening of intermetallic compounds for life improvement and deformation control, such as Figure 1 to Figure 3 shown, including the following steps:

[0034] Step 1, parts clamping: clamp the blade tenon to the track robot fixture;

[0035] Step 2, parts cleaning: use silk cloth dipped in absolute ethanol to wipe the front and back sides of the blade to ensure no oil stains;

[0036] Step 3, the arrangement of the absorbing layer: the air intake edge 3 of the leaf basin, the exhaust edge 4 of the leaf basin, the air intake edge 5 of the leaf back, the exhaust edge 6 of the leaf back, the root of the leaf ba...

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Abstract

The invention provides a method for prolonging the service life of an intermetallic compound and controlling the deformation through laser shock processing. The method comprises the following steps of: step 1. clamping a part; step 2. clearing the part; step 3. arranging an absorbing layer; step 4. applying a constraining layer; step 5. programming; step 6. reinforcing the root of the blade; step7. reinforcing the air intake side and air exhausting side of the blade; step 8. removing the absorbing layer and clearing; step 9. presetting a shape correcting absorbing layer; and step 10. carryingout laser shock processing shape correcting. According to the characteristics of materials and structure of the intermetallic compound blade and the different reinforcing areas, laser shock processing gradient technological parameters are designed to meet the requirements for prolonging the vibratory fatigue life of the blade; and meanwhile, a specific area is selected according to the engineering experience, and a laser shock processing high-frequency shape correcting absorbing layer and process parameters are designed for controlling the deformation of the blade, so that the reinforced blade meets the requirements for fatigue life and deformation control at the same time.

Description

Technical field [0001] The invention belongs to the field of surface strengthening technology, and specifically relates to a method for life improvement and deformation control of laser shock strengthening of intermetallic compounds. Background technique [0002] Laser shock strengthening technology (Laser shock processing, referred to as LSP) is a new technology that uses strong laser-induced shock waves to strengthen metal surfaces. When short pulse high peak power density laser irradiates the metal surface, the metal surface absorption layer (protective layer) absorbs the laser energy and explosively vaporizes and evaporates, generating high-pressure (GPa) plasma. The plasma is constrained by the constraint layer and generates high pressure when it explodes. Shock waves act on the metal surface and propagate inside. While a dense and stable dislocation structure is formed on the surface of the material, strain hardening occurs on the surface of the material, leaving a la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
CPCC21D10/005
Inventor 张恭轩桓恒高宇杨林青陈慧斌
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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