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Nondestructive testing method for metal laser strengthening surface

A non-destructive testing and laser-enhanced technology, applied in the field of testing, can solve the problems of missing defects, insufficient accuracy, low efficiency, etc., and achieve the effect of comprehensive testing range, high accuracy and high degree of mechanization

Pending Publication Date: 2021-06-22
扬州升飞检测技术有限公司
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Problems solved by technology

This detection method is extremely inefficient and not accurate enough, and defects are often missed

Method used

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  • Nondestructive testing method for metal laser strengthening surface

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Please refer to figure 1 , figure 1 It is a schematic diagram of the structure of the ultrasonic flaw detection device for the metal laser strengthening surface non-destructive testing method provided by the present invention. The non-destructive testing method for metal laser strengthened surface includes the following steps:

[0028] S1: Clean the surface of the metal;

[0029] S2: Coating an alloy light-absorbing coating on the cleaned metal surface;

[0030] S3: After the alloy light-absorbing coating is dried, performing laser solution treatment on the metal;

[0031] S4: cooling the metal after laser solution treatment;

[0032] S5: performing aging treatment on the metal after cooling treatment;

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Abstract

The invention provides a nondestructive testing method for a metal laser strengthening surface. The nondestructive testing method for the metal laser strengthening surface comprises the following steps that S1, the surface of metal is cleaned; s2, the cleaned metal surface is coated with an alloy light absorption coating; s3, after the alloy light absorption coating is dried, laser solid solution treatment is conducted on the metal; s4, cooling treatment is conducted on the metal after laser solution treatment; s5, aging treatment is conducted on the metal after cooling treatment; and S6, after aging treatment, an ultrasonic flaw detection device is used for conducting ultrasonic nondestructive detection on the metal, the ultrasonic flaw detection device comprises an ultrasonic flaw detection probe, a transverse moving device and a workpiece clamping device, and the transverse moving device is used for driving the ultrasonic flaw detection probe to transversely move at a constant speed. The nondestructive testing method for the metal laser strengthening surface has the advantages of being convenient to use, high in working efficiency and high in detection precision.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a method for nondestructive detection of metal laser strengthened surfaces. Background technique [0002] Laser shock peening technology, also known as laser peening technology, is a high-power density, short-pulse laser that acts on the energy-absorbing coating coated on the metal surface through the transparent confinement layer. The coating absorbs the laser energy and quickly vaporizes and almost At the same time, a large number of dense high-temperature and high-pressure plasmas are formed. The plasma continues to absorb laser energy and rapidly heats up and expands, and then explodes to form a high-intensity shock wave that acts on the metal surface. When the peak pressure of the shock wave exceeds the dynamic yield strength of the material, the material undergoes plastic deformation and produces a compressive stress perpendicular to the surface of the material. After t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/275G01N29/04C22C30/00C21D1/68C21D1/09
CPCG01N29/275G01N29/04C21D1/68C21D1/09C22C30/00G01N2291/0234
Inventor 陈秀华吴瑞煜
Owner 扬州升飞检测技术有限公司
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