Probe device and scanning method used for aerial flange eddy automatic detection

An automatic detection and disk ring technology, applied in the direction of material magnetic variables, etc., to achieve the effect of convenient disassembly and replacement, ensuring structural rigidity, and reducing detection costs

Active Publication Date: 2017-02-01
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Problems solved by technology

[0006] The purpose of the present invention is to propose a probe device and scanning method for automatic detection of eddy currents in aviation disc rings in view of the problems existing in the current detection process of disc rings

Method used

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  • Probe device and scanning method used for aerial flange eddy automatic detection
  • Probe device and scanning method used for aerial flange eddy automatic detection
  • Probe device and scanning method used for aerial flange eddy automatic detection

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Embodiment

[0046] According to the requirements of technical documents, such as image 3 The entire surface of the aero-engine disc shown is automatically detected by eddy current. The contour line of the cross section of the disc is composed of multiple large-curvature right-angle inner R arcs, straight lines, and ordinary R-arcs, among which the curvature of the large-curvature right-angle inner R arc is The radius is between 9.0mm and 10.5mm. The probe device (consisting of the probe fixture and probe) and the scanning method used for this disc are as follows:

[0047] (1), probe fixture design: such as figure 1 , figure 2 As shown, the probe fixture used is mainly composed of linear slide rail 1, hook connecting plate 2, connecting piece 16, zigzag probe holder 5, electric corner mechanism 12, spring 9, and scanning arm 19. Linear slide rail 1 is zero The pre-tightening force slide rail, the zigzag probe frame 5 is made of aluminum alloy material or a material with similar densit...

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Abstract

The invention belongs to non-destructive testing technology and relates to a probe device and scanning method used for aerial flange eddy automatic detection. The probe device can conduct effective detection on an outline surface containing an R arc in a large curvature right angle and similar line segments to improve detection accessibility of such parts through a zigzag probe frame combined with a scanning mode in which a specially designed probe steps on both sides along an outline of a cross section of the flange. In addition, the probe device and the scanning method also has good universality and is also applicable to detection of other parts such as a classical straight line outline surface, an ordinary R arc outline surface on the flange and the like. The probe device used for aerial flange eddy automatic detection adopts the zigzag probe frame combined with an improved scanning mode, which, compared with the prior probe device and scanning method, except solving a detection problem of the outline surface of the R arc in the large curvature right angle, also has good universality for other common structures, shapes and parts on the flange.

Description

technical field [0001] The invention belongs to the non-destructive testing technology, and relates to a probe device and a scanning method for the eddy current automatic detection of disc ring parts. Background technique [0002] The disk ring is one of the most critical components of an aero-engine. It rotates at medium and high speeds and bears the huge effect of the centrifugal force and thermal stress of the material itself. If the surface and near surface of the disk ring have defects during the manufacturing or use process, it will affect the quality of the aircraft. The operation safety poses a serious threat, so effective defect detection methods must be adopted to conduct a comprehensive inspection on the surface of the disc ring. [0003] Eddy current automatic inspection is an effective and conventional non-destructive testing method for the surface and near-surface defects of aerospace disk rings. The eddy current point probe steps along the radial cross-sectio...

Claims

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Application Information

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IPC IPC(8): G01N27/90
Inventor 王东升刘颖韬史亦韦岳翔徐娜何方成李硕宁杨党纲
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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