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Ultrasonic detection method for diffusion welding head of hollow support plate

A technology of ultrasonic testing and diffusion welding, which is used in the analysis of solids using sonic/ultrasonic/infrasonic waves, and the processing of response signals of detection. Effect

Pending Publication Date: 2022-03-25
AECC AVIATION POWER CO LTD
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide an ultrasonic detection method for a hollow support plate diffusion welding joint, which solves the problem that the reflected signal caused by the dislocation structure and the reflected signal caused by the defect cannot be clearly distinguished

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  • Ultrasonic detection method for diffusion welding head of hollow support plate
  • Ultrasonic detection method for diffusion welding head of hollow support plate
  • Ultrasonic detection method for diffusion welding head of hollow support plate

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Embodiment Construction

[0034] The invention discloses an ultrasonic detection method for a hollow support plate diffusion welding joint, comprising the following steps:

[0035] S1. Select a diffusion-welded hollow support plate, and make a comparison test block according to the structure and size of the hollow support plate, such as figure 1 As shown, the dotted lines are the three cavities corresponding to the hollow support plate, and the three cavities are separated by rib welds.

[0036] S2, such as figure 2 As shown, the first hole 1 and the second hole 2 are processed at the reinforcement weld of the diffusion-welded hollow support plate, and the third hole 3 and the fourth hole 4 are processed at the non-reinforcing rib weld to form as figure 1 The two groups of artificial flat-bottomed hole defects shown;

[0037] Wherein, according to the acceptance standard, the diameters of the first hole 1 and the third hole 3 are designed to be Φ0.8mm, and the diameters of the second hole 2 and the ...

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Abstract

The invention belongs to the technical field of diffusion welding of hollow support plates, and discloses an ultrasonic detection method for a diffusion welding head of a hollow support plate, which comprises the following steps: manufacturing a reference block according to the hollow support plate to be detected, the reference block having the same structure as the hollow support plate to be detected; processing a first hole and a second hole in a reinforcing rib welding seam of the reference block, and processing a third hole and a fourth hole in a non-reinforcing rib welding seam of the reference block; a water immersion focusing probe is adopted, detection parameters are set on a scanning system, the reference block is scanned and detected, and an artificial defect reflection signal is obtained; detecting the hollow support plate diffusion welding part, and if the hollow support plate diffusion welding part has defects, obtaining an actual defect reflection signal; and comparing the actual defect reflection signal with the artificial defect reflection signal on the reference block, and judging the diffusion welding quality of the hollow support plate diffusion welding part according to a comparison result. The problem that a reflected signal caused by an error structure and a reflected signal caused by defects cannot be clearly distinguished is solved.

Description

technical field [0001] The invention belongs to the technical field of diffusion welding of hollow support plates, and specifically discloses an ultrasonic detection method for diffusion welding joints of hollow support plates. Background technique [0002] Diffusion welding is a welding method in which two workpieces to be welded are tightly pressed together, and under the action of temperature and pressure, the two welding surfaces produce microscopic plastic deformation to achieve close contact, and the atoms diffuse each other to form a metallurgical connection. Welding quality is generally detected by ultrasonic pulse reflection method water immersion focusing C-scan detection technology, but the pulse reflection method is generally aimed at the vertical incidence of ultrasonic energy on the welding surface, and the welding surface has a certain size, which can obtain the defects on the welding surface Reflected echoes without the influence of structured echoes. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/48
CPCG01N29/04G01N29/48
Inventor 董瑞琴何喜赵娜张浩喆荆砚冯萍唐琦谷卉英
Owner AECC AVIATION POWER CO LTD
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